CIMR-AU-4A0011FAA Yaskawa Electric AC VFD Variable Frequency Drive Repair

SKU: 36889

CIMR-AU-4A0011FAA Yaskawa Electric AC VFD Variable Frequency Drive Repair

Industrial VFD Repair Service – Save Big and Keep Your Settings. Our services are fast and easy. Send us your failed VFD Variable Frequency Drive. We will quickly repair your faulty VFD. We provide a quick turnaround time and a high repair success rate at a low repair cost.
UpFix is NOT an authorized distributor for Yaskawa Electric.

Experience the most cost-effective and efficient solution for your industrial VFD issues with UpFix expert repair service. By choosing to repair your original VFD, you not only save significantly compared to the cost of buying a new unit, but you also retain all the custom programming and configurations specific to your operational needs.

Estimated Repair Time is 3-5 business days.
2 Year Warranty
Real-Time Repair Tracking
Our service is 100% guaranteed or your money back. Order today and save!

International Shipping Available:
Ships to USA and Canada

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$419.83

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Description Warranty How It Works Part Numbers Error Codes Models

Description

This is a repair service for CIMR-AU-4A0011FAA Yaskawa Electric AC VFD Variable Frequency Drive Repair.
UpFix is NOT an authorized distributor for Yaskawa Electric.

Once we receive your part, our highly trained and IPC certified technicians will run tests to identify the source of the problem. We will rebuild your part, replacing not only the failed components, but all components that are usually known to fail or go bad in this part. We want to make your experience as effortless as possible. All you have to do is send your part to us. Then after receiving the part back from us, just reinstall it and you’re back in business!

Estimated Repair Time is 3-5 business days.

International Shipping Available: Ships to USA and Canada

How it works

We take pride in our work and will take it a step further and fully inspect your control board and will replace failure prone components or parts that may be failing in the future. Each part is fully tested to make sure it passes a full functional test.

Our service is 100 percent guaranteed or your money back. We stand by our services, thats why we got you covered with a 24-month warranty and lifetime phone support when you need us

Our goal is to save you hundreds of dollars, while continuing to provide an eco-friendly solution that reduces pollution. We drive our business towards consistent and profitable growth, with integrity and a commitment to the people and communities where we live and work. Our service is 100% guaranteed or your money back.

This repair service will fix these issues:

Auto Tune Failure
Checksum Fault
Does Not Enable
Does Not Power
Fails Under Load
Fans Not Turning On
Ground Fault
Heatsink Fault
I/O Terminal Not Working
Input Phase Fault
Keypad Issue
Keys Dont Press
No Output
Output Phase Fault
Output Runs Erratically
Overcurrent Fault
Overvoltage Fault
Power Loss
Undervoltage Fault
Unit Had Blown Up
Unit Smoked

Cost-Effective
Repairing your existing VFD can be substantially more affordable than purchasing a new one. Enjoy significant savings while maintaining optimal functionality.

No Reconfiguration Needed
One of the biggest advantages of repairing your original VFD is the elimination of reprogramming. Your VFD will be returned to you with all its original settings intact, ensuring a seamless reintroduction into your system without the need for costly and time-consuming reconfiguration.

Quick Turnaround
We understand the importance of minimizing downtime. Our skilled technicians ensure a quick and efficient repair process, getting your operations back up and running in no time.

Quality Assurance
We use only the highest quality parts and the latest techniques in our repair processes, ensuring your VFD returns to you in top-notch condition, often better than its pre-fault state.

Extended Life for Your Equipment
Repairing and maintaining your existing VFD can significantly extend its life, making it a sustainable choice for your business and the environment.

Expert Support
Our team of experienced technicians is well-versed in a wide range of VFD brands and models, providing you with knowledgeable support and advice every step of the way.

Our Commitment
At UpFix, we are committed to providing you with a reliable, high-quality repair service that keeps your operations smooth and efficient. Trust us to restore your VFD to its optimal performance, ensuring your business runs uninterrupted.

Will this service fix my problems?

A full diagnostic check should first be performed to eliminate all other possible causes for your symptoms, even if the symptoms match those specified on the common fault description.

If you send a unit in good working condition due to misdiagnosis, and our testing determines that there are no issues or faults with the unit, or if the part is beyond repair, then you will only be responsible for the shipping costs and a bench test fee of $39.99 may be applied.

IMPORTANT! If you are not sure that this part is the cause of the fault then we recommend that you do not go ahead with this purchase and instead seek further professional advice and diagnosis.

Benefits of using us:

Free round trip shipping
Fast & easy process
High quality components
100% guaranteed or your money back
Save hundreds of dollars
Amazing customer service and support
No programming needed
Plug-n-play
Refurbished and tested to meet manufacturers specifications
IPC certified technicians (highest standard of quality craftsmanship)
Hassle-free warranty that is much better than the warranties you get for new replacements.

Warranty

Our service is 100 percent guaranteed or your money back.

For a full 24 months, our no-hassle warranty covers the repair. We will fix the item again if the repair fails within 24 months. If the component is not repairable, we will, at our discretion, either replace the part entirely or refund the cost of the repair.

We stand by our services – If the part is going to fail, itll fail within the first 3 months. Thats why we got you covered with a 24-month warranty and lifetime phone support when you need us

How It Works

How it works

Our services are fast and easy. Reducing downtime is extremely important to us. Our standard repair is usually under 1 week. Meanwhile, offering a high-quality repair service with a focus on quick, long-lasting repairs at competitive prices.

We take pride in our work and not only fully inspecting/repairing your faulty part, but will take it a step further and will replace failure prone components or parts that may be failing in the future. Each control board is fully tested to make sure it passes a full functional test. Our service is 100 percent guaranteed or your money back.

Carefully remove your part.
Securely pack your part, using the correct box so that your part cannot be damaged in transit. Take special care when packing.
Add item to shopping cart and check out. We will provide you with shipping label to send the part to us. You will not need to pay anything until your part is full repaired.
Inside the package include: Your Name, Return Address, Phone Number.

International Shipping Available

Part Numbers

CIMRAU4A0011FAA

Error Codes

Code	Description	Recommended Action
AEr	Station Address Setting Error (CC-Link, CANopen, MECHATROLINK) Option card node address is outside of the acceptable setting range.	PROBLEM: 1) Station number is set outside the possible setting range. SOLUTION: 1) • Set parameter F6-10 to the proper value when using a CC-Link option. • Set parameter F6-35 to the proper value when using a CANopen option.
bb	Baseblock Drive output interrupted as indicated by an external baseblock signal.	PROBLEM: 1) External baseblock signal was entered via one of the multi-function input terminals (S1 to S8). SOLUTION: 1) Check external sequence and baseblock signal input timing. Note: Baseblock alarm “bb” will not activate a digital output programmed for minor fault H2-0o = 10. Set H2-0o = 8 or 1B to activate a digital output for “bb”.
boL	Braking Transistor Overload Fault The braking transistor in the drive has been overloaded.	PROBLEM: 1) The proper braking resistor has not been installed. 2) Use a regen converter, regen unit, braking unit, or other device to connect the +1 or +3 terminal to the - terminal. 3) The use rate of the braking transistor is high (i.e., the regen converter is large or the repetition frequency is high). 4) The braking transistor inside the drive is faulty. SOLUTION: 1) Select the proper braking resistor. 2) Set L8-55 to 0 to disable Internal Braking Transistor Protection. 3) • Change to a CDBR type braking unit. • Change to a regen converter. • Increase the deceleration time. 4) Replace the drive.
boL	Braking Transistor Overload Fault. The braking transistor reached its overload level.	PROBLEM: 1) The wrong braking resistor is installed. 2) Use a regen converter, regen unit, braking unit, or other device to connect the +1 or +3 terminal to the - terminal. 3) The braking transistor use rate is high (i.e., the regen converter is large or the repetition frequency is high). 4) The braking transistor inside the drive is faulty. SOLUTION: 1) Select the correct braking resistor. 2) Set L8-55 to 0 to disable Internal Braking Transistor Protection. 3) • Change to a CDBR type braking unit. • Change to a regen converter. • Increase the deceleration time. 4) Replace the drive
bUS	Option Communication Error. • The connection was lost after establishing initial communication. • Only detected when the run command frequency reference is assigned to an option card.	PROBLEM: 1) No signal was received from the PLC. Faulty communications wiring or an existing short circuit. 2) Communication data error occurred due to noise. 3) The option card is damaged. 4) The option card is not properly connected to the drive. SOLUTION: 1) • Check for faulty wiring. • Correct the wiring. • Check for disconnected cables and short circuits and repair as needed. 2) • Check the various options available to minimize the effects of noise. • Counteract noise in the control circuit, main circuit, and ground wiring. • Ensure that other equipment such as switches or relays do not cause noise. Use surge absorbers if necessary. • Use only recommended cables or other shielded line. Ground the shield on the controller side or the drive input power side. • Separate all communication wiring from drive power lines. Install an EMC noise filter to the drive power supply input. 3) Replace the option card if there are no problems with the wiring and the error continues to occur. 4) • The connector pins on the option card do not line up properly with the connector pins on the drive. • Reinstall the option card.
bUS	Option Communication Error • The connection was lost after initial communication was established. • Assign a Run command frequency reference to the option	PROBLEM: 1) Connection is broken or master controller stopped communicating. 2) Option is damaged 3) The option is not properly connected to the drive. 4) A data error occurred due to noise. SOLUTION: 1) • Check for faulty wiring. • Correct the wiring. • Check for disconnected cables and short circuits. Repair as needed 2) If there are no problems with the wiring and the fault continues to occur, replace the option. 3) • The connector pins on the option are not properly lined up with the connector pins on the drive. • Reinstall the option. 4) • Check options available to minimize the effects of noise. • Take steps to counteract noise in the control circuit wiring, main circuit lines and ground wiring. • Try to reduce noise on the controller side. • Use surge absorbers on magnetic contactors or other equipment causing the disturbance. • Use recommended cables or some other type of shielded line. Ground the shield to the controller side or on the input power side. • Separate the wiring for communication devices from the drive input power lines. Install an EMC noise filter to the drive input power.
CALL	Serial Communication Transmission Error Communication has not yet been established.	PROBLEM: 1) Communications wiring is faulty, there is a short circuit, or something is not connected properly. 2) Programming error on the master side 3) Communications circuitry is damaged 4) Termination resistor setting is incorrect SOLUTION: 1) • Check for wiring errors. • Correct the wiring. • Check for disconnected cables and short circuits. Repair as needed 2) Check communications at start-up and correct programming errors 3) • Perform a self-diagnostics check. • If the problem continues, replace either the control board or the entire drive. For instructions on replacing the control board, contact Yaskawa or a Yaskawa representative. 4) Install a termination resistor at both ends of a communication line. Set the internal termination resistor switch correctly on slave drives. Place DIP switch S2 to the ON position.
CE	MEMOBUS/Modbus Communication Error. Control data was not received for the CE detection time set to H5-09.	PROBLEM: 1) Faulty communications wiring or an existing short circuit. 2) Communication data error occurred due to noise. . SOLUTION: 1) • Check for faulty wiring. • Correct the wiring. • Check for disconnected cables and short circuits and repair as needed. 2) • Check the various options available to minimize the effects of noise. • Counteract noise in the control circuit, main circuit, and ground wiring. • Use only recommended cables or other shielded line. Ground the shield on the controller side or the drive input power side. • Ensure that other equipment such as switches or relays do not cause noise. Use surge suppressors if required. • Separate all communication wiring from drive power lines. Install an EMC noise filter to the drive power supply input.
CE	MEMOBUS/Modbus Communication Error Control data was not received correctly for two seconds.	PROBLEM: 1) A data error occurred due to noise. 2) Communication protocol is incompatible. 3) The CE detection time (H5-09) is set shorter than the time required for a communication cycle to take place. 4) Incompatible PLC software settings or there is a hardware problem. 5) Communications cable is disconnected or damaged SOLUTION: 1) • Check options available to minimize the effects of noise. • Take steps to counteract noise in the control circuit wiring, main circuit lines, and ground wiring. • Reduce noise on the controller side. • Use surge absorbers for the magnetic contactors or other components that may be causing the disturbance. • Use only recommended shielded line. Ground the shield on the controller side or on the drive input power side. • Separate all wiring for communication devices from drive input power lines. Install an EMC noise filter to the drive input power supply. 2) • Check the H5 parameter settings and the protocol setting in the controller. • Ensure settings are compatible. 3) • Check the PLC. • Change the software settings in the PLC. • Set a longer CE detection time using parameter H5-09. 4) • Check the PLC. • Remove the cause of the error on the controller side. 5) • Check the connector to make sure the cable has a signal. • Replace the communications cable.
CF	Control Fault. The torque limit was reached continuously for three seconds after the Stop command was input and deceleration was not possible in OLV Control.	PROBLEM: 1) Motor parameters are set improperly 2) Torque limit is too low 3) Load inertia is too big SOLUTION: 1) Check the motor parameter settings and repeat Auto-Tuning. 2) Set the torque limit to the most appropriate setting (L7-01 through L7-04). 3) • Adjust the deceleration time (C1-02, C1-04, C1-06, C1-08). • Set the frequency to the minimum value and interrupt the Run command when the drive finishes decelerating.
CoF	Current Offset Fault. Drive starts operation while the current-detection circuit failure, or the induced voltage remains in the motor (coasting and after rapid deceleration).	PROBLEM: 1) The drive performed a current offset adjustment while the motor was rotating 2) Hardware problem SOLUTION: 1) • The set value exceeds the allowable setting range while the drive automatically adjusts the current offset. This happens when attempting to restart a PM motor that is coasting to stop. • Set b3-01 to 1 to enable Speed Search at Start. • Perform Speed Search 1 or 2 (H1-oo = 61 or 62) via one of the external terminals. Note: Speed Searches 1 and 2 are the same when using OLV/PM. 2) If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
CoPy	Writing Parameter Settings (flashing)	PROBLEM: 1) Parameters are being written to the drive. SOLUTION: 1) This is not an error.
CPEr	Control Mode Mismatch	PROBLEM: 1) Control mode of the parameters to be loaded onto the drive and the control mode set to the drive do not match. SOLUTION: 1) • Verify the control mode for the parameters to be loaded onto the drive and the control mode on drive to which those parameters will be written. • Set the same control mode using parameter A1-02 and retry.
CPF02	A/D Conversion Error An A/D conversion error or control circuit error occurred.	PROBLEM: 1) Control circuit is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
CPF03	Control Board Connection Error Connection error between the control board and the drive	PROBLEM: 1) There is a connection error 2) Drive fails to operate properly due to electrical signal interference SOLUTION: 1) • Turn off the power and check the connection between the control board and the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board. 2) • Check the various options available to minimize the effects of noise. • Counteract noise in the control circuit, main circuit, and ground wiring. • Use only recommended cables or other shielded line. Ground the shield on the controller side or the drive input power side. • Ensure that other equipment such as switches or relays do not cause noise. Use surge suppressors if required. • Separate all communication wiring from drive power lines. Install an EMC noise filter to the drive power supply input
CPF06	EEPROM Memory Data Error Error in the data saved to EEPROM	PROBLEM: 1) There is an error in EEPROM control circuit 2) The power supply was switched off while parameters were being saved to the drive SOLUTION: 1) • Turn off the power and check the connection between the control board and the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board. 2) Reinitialize the drive (A1-03 = 2220, 3330)
CPF07 CPF08	Terminal Board Connection Error	PROBLEM: 1) There is a faulty connection between the terminal board and the control board SOLUTION: 1) • Turn off the power and reconnect the terminal board. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
CPF11	RAM Fault	PROBLEM: 1) Hardware is damaged. SOLUTION: 1) Replace the drive
CPF11	Control Circuit Error	PROBLEM: 1) There is a self-diagnostic error in the control circuit. 2) Connector on the operator is damaged. SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board. 2) Replace the operator.
CPF12	FLASH Memory Fault Problem with the ROM (FLASH memory)	PROBLEM: 1) Hardware is damaged. SOLUTION: 1) Replace the drive
CPF12	Control Circuit Error	PROBLEM: 1) There is a self-diagnostic error in the control circuit. 2) Connector on the operator is damaged. SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board. 2) Replace the operator.
CPF13	Watchdog Circuit Exception Self-diagnostics problem.	PROBLEM: 1) Hardware is damaged. SOLUTION: 1) Replace the drive
CPF13	Control Circuit Error	PROBLEM: 1) There is a self-diagnostic error in the control circuit. 2) Connector on the operator is damaged. SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board. 2) Replace the operator.
CPF14	Control Circuit Fault CPU error (CPU operates incorrectly due to interference, etc.)	PROBLEM: 1) Hardware is damaged. SOLUTION: 1) Replace the drive
CPF14	Control Circuit Error	PROBLEM: 1) There is a self-diagnostic error in the control circuit. 2) Connector on the operator is damaged. SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board. 2) Replace the operator.
CPF16	Control Circuit Error	PROBLEM: 1) There is a self-diagnostic error in the control circuit. 2) Connector on the operator is damaged. SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board. 2) Replace the operator.
CPF16	Clock Fault Standard clock error	PROBLEM: 1) Hardware is damaged. SOLUTION: 1) Replace the drive
CPF17	Control Circuit Error	PROBLEM: 1) There is a self-diagnostic error in the control circuit. 2) Connector on the operator is damaged. SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board. 2) Replace the operator.
CPF17	Timing Fault A timing error occurred during an internal process.	PROBLEM: 1) Hardware is damaged. SOLUTION: 1) Replace the drive
CPF18	Control Circuit Error	PROBLEM: 1) There is a self-diagnostic error in the control circuit. 2) Connector on the operator is damaged. SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board. 2) Replace the operator.
CPF18	Control Circuit Fault CPU error. Non-Maskable Interrupt (An unusual interrupt was triggered by interference, etc.)	PROBLEM: 1) Hardware is damaged. SOLUTION: 1) Replace the drive
CPF19	Control Circuit Fault CPU error (Manual reset due to interference, etc.)	PROBLEM: 1) Hardware is damaged. SOLUTION: 1) Replace the drive
CPF19	Control Circuit Error	PROBLEM: 1) There is a self-diagnostic error in the control circuit. 2) Connector on the operator is damaged. SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board. 2) Replace the operator.
CPF20	Control Circuit Error	PROBLEM: 1) Hardware is damaged. SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
CPF21	Control Circuit Error	PROBLEM: 1) Hardware is damaged. SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
CPF22	Hybrid IC Failure	PROBLEM: 1) Hybrid IC failure on the power board SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the power board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the power board.
CPF23	Control Board Connection Error Connection error between the control board and the drive	PROBLEM: 1) Hardware is damaged. SOLUTION: 1) • Turn off the power and check the connection between the control board and the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
CPF24	Drive Unit Signal Fault The drive capacity cannot be detected correctly (drive capacity is checked when the drive is powered up).	PROBLEM: 1) Hardware is damaged. SOLUTION: 1) If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
CPF25	Terminal Board Not Connected	PROBLEM: 1) Terminal board is not connected correctly SOLUTION: 1) Reconnect the terminal board to the connector on the drive, then cycle the power to the drive.
CPF26	Control Circuit Error CPU error	PROBLEM: 1) Hardware is damaged. SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
CPF27	Control Circuit Error CPU error	PROBLEM: 1) Hardware is damaged. SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
CPF28	Control Circuit Error CPU error	PROBLEM: 1) Hardware is damaged. SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
CPF29	Control Circuit Error CPU error	PROBLEM: 1) Hardware is damaged. SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
CPF30	Control Circuit Error CPU error	PROBLEM: 1) Hardware is damaged. SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
CPF31	Control Circuit Error CPU error	PROBLEM: 1) Hardware is damaged. SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
CPF32	Control Circuit Error CPU error	PROBLEM: 1) Hardware is damaged. SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
CPF33	Control Circuit Error CPU error	PROBLEM: 1) Hardware is damaged. SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
CPF34	Control Circuit Error CPU error	PROBLEM: 1) Hardware is damaged. SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
CPF35	Control Circuit Error CPU error	PROBLEM: 1) Hardware is damaged. SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
CPF40	Control Circuit Error CPU error	PROBLEM: 1) Hardware is damaged. SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
CPF41	Control Circuit Error CPU error	PROBLEM: 1) Hardware is damaged. SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
CPF42	Control Circuit Error CPU error	PROBLEM: 1) Hardware is damaged. SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
CPF43	Control Circuit Error CPU error	PROBLEM: 1) Hardware is damaged. SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
CPF44	Control Circuit Error CPU error	PROBLEM: 1) Hardware is damaged. SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
CPF45	Control Circuit Error CPU error	PROBLEM: 1) Hardware is damaged. SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
CPyE	Error Writing Data	PROBLEM: 1) Failed writing parameters SOLUTION: 1) Attempt to write parameters again.
CrST	Cannot Reset	PROBLEM: 1) Fault reset was being executed when a Run command was entered. SOLUTION: 1) • Ensure that a Run command cannot be entered from the external terminals or option during fault reset. • Turn off the Run command.
CSEr	Copy Unit Error	PROBLEM: 1) Hardware fault SOLUTION: 1) Replace the operator or the USB Copy Unit.
CyC	MECHATROLINK Comm. Cycle Setting Error Comm. Cycle Setting Error was detected.	PROBLEM: 1) The controller is using a comm. cycle beyond the allowable setting range for the MECHATROLINK option. SOLUTION: 1) Set the comm. cycle for the upper controller within the allowable setting range for the MECHATROLINK option.
dEv	Speed Deviation (when using a PG option card and AOLV/PM without PG) The deviation between the speed reference and speed feedback is greater than the setting in F1-10 for longer than the time in F1-11.	PROBLEM: 1) Load is too heavy 2) Acceleration and deceleration times are set too short 3) The load is locked up. 4) Parameter settings are inappropriate. 5) Incorrect speed feedback scaling when using terminal RP as speed feedback input in V/f Control. 6) The motor brake engaged. SOLUTION: 1) Reduce the load 2) Increase the acceleration and deceleration times (C1-01 through C1-08). 3) Check the machine. 4) Check the settings of parameters F1-10 and F1-11 5) • Set H6-02 to value of the speed feedback signal frequency when the motor runs at the maximum speed. • Adjust the speed feedback signal using parameters H6-03 through H6-05. • Make sure the speed feedback signal frequency does not exceed the maximum input frequency of terminal RP. 6) Ensure the brake releases properly.
dEv	Speed Deviation (for Control Mode with PG and AOLV/PM without PG) The deviation between the speed reference and speed feedback is greater than the setting in F1-10 for longer than the time set to F1-11.	PROBLEM: 1) Load is too heavy 2) Acceleration and deceleration times are set too short 3) The load is locked up 4) Parameters are not set appropriately 5) Incorrect speed feedback scaling when using terminal RP as speed feedback input in V/f control 6) Motor brake is engaged SOLUTION: 1) Reduce the load. 2) Increase the acceleration and deceleration times (C1-01 through C1-08). 3) Check the machine. 4) Check the settings of parameters F1-10 and F1-11. 5) • Set H6-02 to the same value as the speed feedback signal frequency when the motor runs at maximum speed. • Adjust the speed feedback signal using parameters H6-03 through H6-05. • Make sure the speed feedback signal frequency does not exceed the maximum input frequency of terminal RP. 6) Ensure the motor brake releases properly.
dFPS	Drive Model Mismatch	PROBLEM: 1) The drives used in the copy and write process are not the same model. • The drive from which the parameters were copied is a different model. • The drive to be written to is a different model. SOLUTION: 1) • Verify the model number of the drive from which the parameters were copied and the model of the drive to which those parameters will be written. • Make sure the two drives are the same model and have the same software version.
dnE	Drive Disabled	PROBLEM: 1) “Drive Enable” is set to a multi-function contact input (H1-oo = 6A) and that signal was switched off. SOLUTION: 1) Check the operation sequence
dv1	Z Pulse Fault (CLV/PM control mode only) The motor turned one full rotation without the Z Pulse being detected.	PROBLEM: 1) PG encoder is disconnected, improperly wired, or the PG option card or PG encoder are damaged SOLUTION: 1) • Make sure the PG encoder is properly connected and all shielded lines are properly grounded. • If the problem continues after cycling power, replace the PG option card or the PG encoder.
dv2	Z Pulse Noise Fault Detection (CLV/PM control mode only) The Z Pulse is out of phase by more than 5 degrees for 10 consecutive revolutions.	PROBLEM: 1) Noise interference along the PG cable 2) PG cable is not wired properly 3) PG option card or the PG encoder are damaged SOLUTION: 1) Separate the PG cable lines from the source of the noise 2) Rewire the PG encoder and properly ground all shielded lines. 3) If the problem continues after cycling power, replace the PG option card or the PG encoder
dv3	Inversion Detection (CLV/PM control mode only) The torque reference and acceleration are in opposite directions and the speed reference and actual motor speed differ by more than 30% for the number of times set to F1-18.	PROBLEM: 1) The Z Pulse offset is not set properly to E5-11 2) An external force on the load side caused the motor to move 3) Noise interference along the PG cable affecting the A or B pulse PG encoder is disconnected, improperly wired, or the PG option card or PG encoder are damaged 4) Rotational direction for the PG encoder set to F1-05 is the opposite of the motor line order 5) The drive incorrectly detected the position of the motor poles. SOLUTION: 1) Set the value for Δθ to E5-11 as specified on the motor nameplate. Replacing the PG encoder or changing the application to rotate the motor in reverse requires readjustment of the Z-pulse offset. (T2-01 = 3) 2) • Make sure the motor is rotating in the proper direction. • Identify and fix any problems on the load side causing the motor to rotate in the opposite direction. 3) Properly rewire the PG encoder and connect all lines including shielded line 4) Properly connect the motor lines for each phase (U, V, W) 5) If the value displayed in the U6–57 is lower than 819, then set the polarity judge current (n8–84) higher than the default value.
dv4	Inversion Prevention Detection (CLV/PM control mode only) Pulses indicate that the motor is rotating in the opposite direction of the speed reference. Set the number of pulses to trigger inverse detection to F1-19. Note: Set F1-19 to 0 to disable inverse detection in applications where the motor may rotate in the opposite direction of the speed reference	PROBLEM: 1) The Z Pulse offset is not set properly to E5-11 2) Electrical signal interference along the PG cable affecting the A or B pulse 3) PG encoder is disconnected, improperly wired, or the PG option card or PG encoder are damaged 4) The drive incorrectly detected the position of the motor poles. 5) The setting value of the polarity judge current (n8–84) is too low. SOLUTION: 1) • Set the value for Δθ to E5-11 as specified on the motor nameplate. • If the problem continues after cycling power, replace the PG option card or the PG encoder. Replacing the PG encoder or changing the application to rotate the motor in reverse requires readjustment of the Z-pulse offset. (T2-01 = 3) 2) • Make sure the motor is rotating in the proper direction. • Identify and fix any problems on the load side causing the motor to rotate in the opposite direction. 3) • Rewire the PG encoder and properly connect all lines including shielded line. • If the problem continues after cycling power, replace the PG option card or the PG encoder 4) If the value displayed in the U6–57 is lower than 819, then set the polarity judge current (n8–84) higher than the default value. 5) The polarity judge current (n8–84) is higher that default value. Check with the motor manufacturer for the maximum set value.
dv7	Initial Polarity Estimation Timeout	PROBLEM: 1) Disconnection in the motor coil winding Loose output terminals SOLUTION: 1) • Measure the motor line-to-line resistance and replace the motor if the motor coil winding is open. • Check for loose terminals. Apply the tightening torque specified in this manual to fasten the terminals. Refer to Main Circuit Wire Gauges and Tightening Torques on page 129 for details. • Ensure that monitor U6-57 displays a value greater than 819 during the initial test runs for the application to prevent the drive from incorrectly determining motor polarity. If U6-57 shows a value less than 819, increase the polarity judge current level set in parameter n8-84.
dWAL	DriveWorksEZ Fault	PROBLEM: 1) Fault output by DriveWorksEZ SOLUTION: 1) Correct the cause of the fault
dWF1	EEPROM Memory DriveWorksEZ Data Error There is an error in the DriveWorksEZ program saved to EEPROM	PROBLEM: 1) Problem with EEPROM data. 2) There is an error in the EEPROM control circuit. SOLUTION: 1) Reinitialize the drive (A1-03 = 2220, 3330) and download the DriveWorksEZ program again. 2) • Turn the power off and check the connection between the control board and the drive. • If the problem continues, replace either the control board or the entire drive and then download the DriveWorksEZ program. For instructions on replacing the control board, contact Yaskawa or your nearest sales representative.
dWFL	DriveWorksEZ Fault	PROBLEM: 1) Fault output by DriveWorksEZ SOLUTION: 1) Correct the cause of the fault
E5	MECHATROLINK Watchdog Timer Error The watchdog timed out.	PROBLEM: 1) Data has not been received from the PLC SOLUTION: 1) Execute DISCONNECT or ALM_CLR, then issue a CONNECT command or SYNC_SET command and proceed to phase 3. Refer to the SI-T3 Option Technical Manual for more details on troubleshooting
EF	Forward/Reverse Run Command Input Error Both forward run and reverse run closed simultaneously for longer than 0.5 s.	PROBLEM: 1) Sequence error SOLUTION: 1) Check the forward and reverse command sequence and correct the problem. Note: When minor fault EF detected, motor ramps to stop.
EF0	Option Card External Fault An external fault condition is present.	PROBLEM: 1) An external fault was received from the PLC and F6-03 is set to a value other than 3. 2) Problem with the PLC program SOLUTION: 1) • Remove the cause of the external fault. • Remove the external fault input from the PLC. 2) Check the PLC program and correct problems
EF0	Option Card External Fault An external fault condition is present.	PROBLEM: 1) An external fault was received from the PLC with F6-03 set to 3, which allows the drive to continue running after an external fault occurs. 2) There is a problem with the PLC program. SOLUTION: 1) • Remove the cause of the external fault. • Remove the external fault input from the PLC. 2) Check the PLC program and correct problems.
EF1	External Fault (input terminal S1) External fault at multi-function input terminal S1.	PROBLEM: 1) An external device tripped an alarm function 2) Wiring is incorrect 3) Multi-function contact input setting is incorrect SOLUTION: 1) Remove the cause of the external fault and reset the fault. 2) • Properly connect the signal lines to the terminals assigned for external fault detection (H1-oo = 20 to 2B). • Reconnect the signal line. 3) • Check for unused terminals set for H1-oo = 20 to 2B (External Fault). • Change the terminal settings.
EF1	External Fault (Input Terminal S1) External fault at multi-function input terminal S1.	PROBLEM: 1) An external device has tripped an alarm function. 2) Wiring is incorrect. 3) Multi-function contact inputs are set incorrectly. SOLUTION: 1) Remove the cause of the external fault and reset the multi-function input value. 2) • Ensure the signal lines have been connected properly to the terminals assigned for external fault detection (H1-oo = 2C to 2F). • Reconnect the signal line. 3) • Check if the unused terminals have been set for H1-oo = 2C to 2F (External Fault). • Change the terminal settings.
EF2	External Fault (input terminal S2) External fault at multi-function input terminal S2.	PROBLEM: 1) An external device tripped an alarm function 2) Wiring is incorrect 3) Multi-function contact input setting is incorrect SOLUTION: 1) Remove the cause of the external fault and reset the fault. 2) • Properly connect the signal lines to the terminals assigned for external fault detection (H1-oo = 20 to 2B). • Reconnect the signal line. 3) • Check for unused terminals set for H1-oo = 20 to 2B (External Fault). • Change the terminal settings.
EF2	External Fault (Input Terminal S2) External fault at multi-function input terminal S2.	PROBLEM: 1) An external device has tripped an alarm function. 2) Wiring is incorrect. 3) Multi-function contact inputs are set incorrectly. SOLUTION: 1) Remove the cause of the external fault and reset the multi-function input value. 2) • Ensure the signal lines have been connected properly to the terminals assigned for external fault detection (H1-oo = 2C to 2F). • Reconnect the signal line. 3) • Check if the unused terminals have been set for H1-oo = 2C to 2F (External Fault). • Change the terminal settings.
EF3	External Fault (input terminal S3) External fault at multi-function input terminal S3.	PROBLEM: 1) An external device tripped an alarm function 2) Wiring is incorrect 3) Multi-function contact input setting is incorrect SOLUTION: 1) Remove the cause of the external fault and reset the fault. 2) • Properly connect the signal lines to the terminals assigned for external fault detection (H1-oo = 20 to 2B). • Reconnect the signal line. 3) • Check for unused terminals set for H1-oo = 20 to 2B (External Fault). • Change the terminal settings.
EF3	External Fault (Input Terminal S3) External fault at multi-function input terminal S3.	PROBLEM: 1) An external device has tripped an alarm function. 2) Wiring is incorrect. 3) Multi-function contact inputs are set incorrectly. SOLUTION: 1) Remove the cause of the external fault and reset the multi-function input value. 2) • Ensure the signal lines have been connected properly to the terminals assigned for external fault detection (H1-oo = 2C to 2F). • Reconnect the signal line. 3) • Check if the unused terminals have been set for H1-oo = 2C to 2F (External Fault). • Change the terminal settings.
EF4	External Fault (input terminal S4) External fault at multi-function input terminal S4.	PROBLEM: 1) An external device tripped an alarm function 2) Wiring is incorrect 3) Multi-function contact input setting is incorrect SOLUTION: 1) Remove the cause of the external fault and reset the fault. 2) • Properly connect the signal lines to the terminals assigned for external fault detection (H1-oo = 20 to 2B). • Reconnect the signal line. 3) • Check for unused terminals set for H1-oo = 20 to 2B (External Fault). • Change the terminal settings.
EF4	External Fault (Input Terminal S4) External fault at multi-function input terminal S4.	PROBLEM: 1) An external device has tripped an alarm function. 2) Wiring is incorrect. 3) Multi-function contact inputs are set incorrectly. SOLUTION: 1) Remove the cause of the external fault and reset the multi-function input value. 2) • Ensure the signal lines have been connected properly to the terminals assigned for external fault detection (H1-oo = 2C to 2F). • Reconnect the signal line. 3) • Check if the unused terminals have been set for H1-oo = 2C to 2F (External Fault). • Change the terminal settings.
EF5	External Fault (input terminal S5) External fault at multi-function input terminal S5.	PROBLEM: 1) An external device tripped an alarm function 2) Wiring is incorrect 3) Multi-function contact input setting is incorrect SOLUTION: 1) Remove the cause of the external fault and reset the fault. 2) • Properly connect the signal lines to the terminals assigned for external fault detection (H1-oo = 20 to 2B). • Reconnect the signal line. 3) • Check for unused terminals set for H1-oo = 20 to 2B (External Fault). • Change the terminal settings.
EF5	External Fault (Input Terminal S5) External fault at multi-function input terminal S5.	PROBLEM: 1) An external device has tripped an alarm function. 2) Wiring is incorrect. 3) Multi-function contact inputs are set incorrectly. SOLUTION: 1) Remove the cause of the external fault and reset the multi-function input value. 2) • Ensure the signal lines have been connected properly to the terminals assigned for external fault detection (H1-oo = 2C to 2F). • Reconnect the signal line. 3) • Check if the unused terminals have been set for H1-oo = 2C to 2F (External Fault). • Change the terminal settings.
EF6	External Fault (input terminal S6) External fault at multi-function input terminal S6.	PROBLEM: 1) An external device tripped an alarm function 2) Wiring is incorrect 3) Multi-function contact input setting is incorrect SOLUTION: 1) Remove the cause of the external fault and reset the fault. 2) • Properly connect the signal lines to the terminals assigned for external fault detection (H1-oo = 20 to 2B). • Reconnect the signal line. 3) • Check for unused terminals set for H1-oo = 20 to 2B (External Fault). • Change the terminal settings.
EF6	External Fault (Input Terminal S6) External fault at multi-function input terminal S6.	PROBLEM: 1) An external device has tripped an alarm function. 2) Wiring is incorrect. 3) Multi-function contact inputs are set incorrectly. SOLUTION: 1) Remove the cause of the external fault and reset the multi-function input value. 2) • Ensure the signal lines have been connected properly to the terminals assigned for external fault detection (H1-oo = 2C to 2F). • Reconnect the signal line. 3) • Check if the unused terminals have been set for H1-oo = 2C to 2F (External Fault). • Change the terminal settings.
EF7	External Fault (input terminal S7) External fault at multi-function input terminal S7.	PROBLEM: 1) An external device tripped an alarm function 2) Wiring is incorrect 3) Multi-function contact input setting is incorrect SOLUTION: 1) Remove the cause of the external fault and reset the fault. 2) • Properly connect the signal lines to the terminals assigned for external fault detection (H1-oo = 20 to 2B). • Reconnect the signal line. 3) • Check for unused terminals set for H1-oo = 20 to 2B (External Fault). • Change the terminal settings.
EF7	External Fault (Input Terminal S7) External fault at multi-function input terminal S7.	PROBLEM: 1) An external device has tripped an alarm function. 2) Wiring is incorrect. 3) Multi-function contact inputs are set incorrectly. SOLUTION: 1) Remove the cause of the external fault and reset the multi-function input value. 2) • Ensure the signal lines have been connected properly to the terminals assigned for external fault detection (H1-oo = 2C to 2F). • Reconnect the signal line. 3) • Check if the unused terminals have been set for H1-oo = 2C to 2F (External Fault). • Change the terminal settings.
EF8	External Fault (Input Terminal S8) External fault at multi-function input terminal S8.	PROBLEM: 1) An external device has tripped an alarm function. 2) Wiring is incorrect. 3) Multi-function contact inputs are set incorrectly. SOLUTION: 1) Remove the cause of the external fault and reset the multi-function input value. 2) • Ensure the signal lines have been connected properly to the terminals assigned for external fault detection (H1-oo = 2C to 2F). • Reconnect the signal line. 3) • Check if the unused terminals have been set for H1-oo = 2C to 2F (External Fault). • Change the terminal settings.
EF8	External Fault (input terminal S8) External fault at multi-function input terminal S8.	PROBLEM: 1) An external device tripped an alarm function 2) Wiring is incorrect 3) Multi-function contact input setting is incorrect SOLUTION: 1) Remove the cause of the external fault and reset the fault. 2) • Properly connect the signal lines to the terminals assigned for external fault detection (H1-oo = 20 to 2B). • Reconnect the signal line. 3) • Check for unused terminals set for H1-oo = 20 to 2B (External Fault). • Change the terminal settings.
End	Task Complete	PROBLEM: 1) Finished reading, writing, or verifying parameters. SOLUTION: 1) This is not an error.
End1	Excessive V/f Setting (detected only during Rotational Auto-Tuning and displayed after Auto-Tuning is complete)	PROBLEM: 1) The torque reference exceeded 20% during Auto-Tuning. The results from Auto-Tuning the no-load current exceeded 80%. SOLUTION: 1) • Prior to Auto-Tuning, verify the information on the motor nameplate. • Enter proper values from motor nameplate to parameters T1-03 to T1-05 and repeat Auto-Tuning. • If possible, disconnect the motor from the load and perform Auto-Tuning. If the load cannot be uncoupled, use the current Auto-Tuning results.
End2	Motor Iron-Core Saturation Coefficient (detected only during Rotational Auto-Tuning and displayed after Auto-Tuning is complete)	PROBLEM: 1) Motor data entered during Auto-Tuning was incorrect. 2) Results from Auto-Tuning are outside the parameter setting range, assigning the ironcore saturation coefficients (E2-07 and E2-08) to temporary values. SOLUTION: 1) • Make sure the data entered to the T1 parameters match the information written on the motor nameplate. • Restart Auto-Tuning and enter the correct information. 2) • Check and correct faulty motor wiring. • Disconnect the motor from machine and perform Rotational Auto-Tuning.
End3	Rated Current Setting Alarm (displayed after Auto-Tuning is complete)	PROBLEM: 1) The correct current rating printed on the motor nameplate was not entered into T1-04. SOLUTION: 1) • Check the setting of parameter T1-04. • Check the motor data and repeat Auto-Tuning.
End4	Adjusted Slip Calculation Error	PROBLEM: 1) The calculated slip is outside the allowable range. SOLUTION: 1) • Make sure the data entered for Auto-Tuning is correct. • If possible, perform Rotational Auto-Tuning. If not possible, perform Stationary Auto-Tuning 2.
End5	Resistance Tuning Error	PROBLEM: 1) The calculated resistance value is outside the allowable range. SOLUTION: 1) • Double-check the data entered for the Auto-Tuning process. • Check the motor and motor cable connection for faults.
End6	Leakage Inductance Alarm	PROBLEM: 1) A1-02 setting error. SOLUTION: 1) • Double-check the data entered for the Auto-Tuning process. • Check the setting of A1-02. • Check the control mode and repeat Auto-Tuning.
End7	No-Load Current Alarm	PROBLEM: 1) The entered no-load current value was outside the allowable range. 2) Auto-Tuning results were less than 5% of the motor rated current. SOLUTION: 1) Check and correct faulty motor wiring. 2) Double-check the data entered for the Auto-Tuning process.
Er-01	Motor Data Error	PROBLEM: 1) Motor data or data entered during, Auto-Tuning was incorrect 2) Motor rated power and motor-rated current settings (T1-02 and T1-04) do not match. 3) Motor rated current and detected no-load current are inconsistent. 4) Base frequency and motor rated speed (T1-05 and T1-07) do not match. SOLUTION: 1) • Check that the motor data entered to T1 parameters matches motor nameplate input before Auto-Tuning. • Restart Auto-Tuning and enter the correct information. 2) • Check the drive and motor capacities. • Correct the settings of parameters T1-02 and T1-04. 3) • Check the motor rated current and no-load current. • Correct the settings of parameters T1-04 and E2-03. 4) • Correct the settings of parameters T1-05 and T1-07. • Check that the correct number of poles were entered to T1-06.
Er-02	Minor Fault	PROBLEM: 1) An alarm was triggered during Auto-Tuning 2) Motor data entered during Auto-Tuning was incorrect. 3) Faulty cable connection, The load is too heavy. SOLUTION: 1) Exit the Auto-Tuning menu, check the alarm code, remove the alarm cause, and repeat Auto-Tuning. 2) • Check that the motor data entered matches the motor nameplate input before performing Auto-Tuning (T1-02 to T1-07). • Restart Auto-Tuning and enter the correct information. 3) • Check and correct faulty motor wiring. • Check the vicinity of the machine. • Check the load conditions. • Investigate and correct the cause and then reset the fault.
Er-03	STOP Button Input	PROBLEM: 1) Auto-Tuning canceled by pressing STOP button. SOLUTION: 1) Auto-Tuning did not complete properly. Restart Auto-Tuning.
Er-04	Line-to-Line Resistance Error	PROBLEM: 1) Motor data entered during Auto-Tuning was incorrect. 2) Results from Auto-Tuning are outside the parameter setting range or the tuning process took too long. 3) Faulty motor cable or cable connection. SOLUTION: 1) • Make sure the data entered to the T1 parameters match the information written on the motor nameplate. • Restart Auto-Tuning and enter the correct information. 2) Check and correct faulty motor wiring. 3) Check and correct faulty motor wiring.
Er-05	No-Load Current Error	PROBLEM: 1) Motor data entered during Auto-Tuning was incorrect. 2) Results from Auto-Tuning are outside the parameter setting range or the tuning process took too long. 3) The load was too high during Rotational Auto-tuning. SOLUTION: 1) • Make sure the data entered to the T1 parameters match the information written on the motor nameplate. • Restart Auto-Tuning and enter the correct information. 2) • Check and correct faulty motor wiring. • Perform Rotational Auto-Tuning. 3) • Disconnect the motor from machine and restart Auto-Tuning. If motor and load cannot be uncoupled make sure the load is lower than 30%. • If a mechanical brake is installed, make sure it is fully lifted during tuning.
Er-08	Rated Slip Error	PROBLEM: 1) Motor data entered during Auto-Tuning was incorrect. 2) Results from Auto-Tuning are outside the parameter setting range or the tuning process took too long. 3) The load was too high during rotational Auto-tuning. SOLUTION: 1) • Make sure the data entered to the T1 parameters match the information written on the motor nameplate. • Restart Auto-Tuning and enter the correct information. 2) • Check and correct faulty motor wiring. • Perform Rotational Auto-Tuning. 3) • Disconnect the motor from machine and restart Auto-Tuning. If motor and load cannot be uncoupled make sure the load is lower than 30%. • If a mechanical brake is installed, make sure it is fully lifted during tuning.
Er-09	Acceleration Error	PROBLEM: 1) The motor did not accelerate for the specified acceleration time. 2) Torque limit when motoring is too low (L7-01 and L7-02). 3) The load was too high during Rotational Auto-Tuning. SOLUTION: 1) • Increase the acceleration time (C1-01). • Disconnect the machine from the motor if possible 2) • Check L7-01 and L7-02 settings. • Increase the setting. 3) • Disconnect the motor from machine and restart Auto-Tuning. If motor and load cannot be uncoupled make sure the load is lower than 30%. • If a mechanical brake is installed, make sure it is fully lifted during tuning.
Er-10	Motor Direction Error	PROBLEM: 1) The encoder signal lines are not properly connected to the drive. 2) Motor direction and PG direction are opposite. 3) The load pulled the motor in the opposite direction of the speed reference and the torque exceeded 100%. SOLUTION: 1) Check and correct wiring to the PG encoder. 2) Check the motor speed monitor U1-05 while manually turning the motor forward. If the sign displayed is negative, change the setting of parameter F1-05. 3) Uncouple the motor from the load and restart Auto-Tuning.
Er-11	Motor Speed Error	PROBLEM: 1) Torque reference is too high. SOLUTION: 1) • Increase the acceleration time 1 (C1-01). • Disconnect the machine from the motor if possible.
Er-12	Current Detection Error	PROBLEM: 1) One of the motor phases is missing: (U/T1, V/T2, W/T3) 2) - The current exceeded the current rating of the drive. - The current is too low. 3) Attempted Auto-Tuning without motor connected to the drive. 4) Current detection signal error. SOLUTION: 1) Check motor wiring and correct any problems. 2) • Check motor wiring for a short between motor lines. • Close any magnetic contactors used between motors. • Replace the control board or the entire drive. For instructions on replacing the control board, contact Yaskawa or a Yaskawa representative. 3) Connect the motor and restart Auto-Tuning. 4) Replace the control board or the entire drive. For instructions on replacing the control board, contact Yaskawa or a Yaskawa representative.
Er-13	Leakage Inductance Error	PROBLEM: 1) Drive was unable to complete tuning for leakage inductance within 300 seconds. SOLUTION: 1) • Check all wiring and correct any mistakes. • Check the motor rated current value written on the motor nameplate and enter the correct value to T1-04.
Er-14	Motor Speed Error 2	PROBLEM: 1) The motor speed exceeded twice the amplitude of speed reference during Inertia Tuning. SOLUTION: 1) Reduce the ASR gain set to C5-01.
Er-15	Torque Saturation Error	PROBLEM: 1) The output torque reached the torque limit set in L7-01 through L7-04 during Inertia Tuning. SOLUTION: 1) • Increase the torque limits in L7-01 through L7-04 within reasonable limits. • Reduce the test signal frequency in T3-01 and restart Auto-Tuning. If necessary, reduce the test signal amplitude (T3-02) and restart Auto-Tuning.
Er-16	Inertia ID Error	PROBLEM: 1) The inertia identified by the drive was abnormally small or abnormally large during Inertia Tuning. SOLUTION: 1) • Reduce the test signal frequency in T3-01 and restart Auto-Tuning. If necessary, reduce the test signal amplitude (T3-02) and restart Auto-Tuning. • Check the basic motor inertia value entered to T3-03.
Er-17	Reverse Prohibited Error	PROBLEM: 1) Drive is prohibited from rotating the motor in reverse while attempting to perform Inertia Tuning. SOLUTION: 1) • Inertia Auto-Tuning cannot be performed if the drive is restricted from rotating in reverse. • Assuming it is acceptable for the application to rotate in reverse, set b1-04 to 0 and then perform Inertia Tuning
Er-18	Induction Voltage Error	PROBLEM: 1) The result of Back EMF Constant Tuning (induced voltage) exceeds the allowable setting range. SOLUTION: 1) Double-check the data entered to the T2-oo parameters and restart Auto-Tuning.
Er-19	PM Inductance Error	PROBLEM: 1) The induced voltage constant attempted to set a value to E5-08 or E5-09 that is outside the allowable range. SOLUTION: 1) Double-check the data entered to the T2-oo parameters and restart Auto-Tuning.
Er-20	Stator Resistance Error	PROBLEM: 1) Stator resistance tuning attempted to set a value to E5-06 that is outside the allowable setting range. SOLUTION: 1) Double-check the data entered to the T2-oo parameters and restart Auto-Tuning.
Er-21	Z Pulse Correction Error	PROBLEM: 1) Motor was coasting when Auto-Tuning was performed. 2) Either the motor or the PG encoder on the motor are not properly wired. 3) The direction for the PG encoder is set incorrectly, or the number of pulses set for the PG encoder is wrong. 4) PG encoder is damaged. 5) Motor inertia is large. 6) Z-Pulse Offset Tuning was performed when b1-04 was set to 1. 7) Motor vibrates during tuning. SOLUTION: 1) Make sure the motor comes to a complete stop. Repeat Auto-Tuning. 2) Check the wiring for the motor and the PG encoder. Restart Auto-Tuning. 3) Check the direction and number of pulses set for the PG encoder. Restart Auto-Tuning. 4) Check the signal output from the PG encoder attached to the motor. Replace the PG if damaged. 5) Increase the setting of n8-02 (Pole Attraction Current). 6) • Z-Pulse Offset Tuning cannot be performed for a machine with reverse operation prohibited. • If the machine allows reverse operation, set b1-04 to 0 to enable Reverse Operation Selection and then perform Z-Pulse Offset Tuning. 7) • Increase the setting of n8-03, Current Startup Time, and n8-04, Pole Attraction Time. • Decrease the setting of n8-02, Pole Attraction Current.
Er-25	High Frequency Injection Parameter Tuning Error	PROBLEM: 1) Motor data was incorrect. SOLUTION: 1) Perform Stationary Auto-Tuning and then perform High Frequency Injection Parameter Tuning again. If the problem continues, high frequency injection control might not be possible with that motor. Note: Auto-Tuning is not applicable for SPM motors.
Err	EEPROM Write Error Data cannot be written to the EEPROM	PROBLEM: 1) Noise has corrupted data while writing to the EEPROM 2) Hardware problem SOLUTION: 1) • Press “ENTER” on the digital operator. • Correct the parameter setting. • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board. 2) If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
FAn	Internal Fan Fault Fan or magnetic contactor failure (detected when L8-32 = 3 or 4)	PROBLEM: 1) Internal cooling fan has malfunctioned 2) Fault detected in the internal cooling fan or magnetic contactor to the power supply. SOLUTION: 1) • Cycle power to the drive. • Check for fan operation. • Verify the cumulative operation time of the fan with monitor U4-03, and verify the cumulative operation time of the fan maintenance timer with U4-04. • If the cooling fan has exceeded its expected performance life or is damaged in any other way, replace the fan. 2) • Cycle power to the drive. • If the fault continues to occur, replace the power board/gate drive board or the entire drive. • Contact Yaskawa or a Yaskawa representative for instructions on replacing the power board/gate drive board.
FAn	Internal Fan Fault Fan or magnetic contactor failure (detected when L8-32 = 0 to 2)	PROBLEM: 1) Internal cooling fan has malfunctioned 2) Fault detected in the internal cooling fan or magnetic contactor to the power supply. SOLUTION: 1) • Cycle power to the drive. • Check for fan operation. • Verify the cumulative operation time of the fan with monitor U4-03, and verify the cumulative operation time of the fan maintenance timer with U4-04. • If the cooling fan has exceeded its expected performance life or is damaged in any other way, replace the fan. 2) • Cycle power to the drive. • If the fault continues to occur, replace the power board/gate drive board or the entire drive. • Contact Yaskawa or a Yaskawa representative for instructions on replacing the power board/gate drive board.
FbH	Excessive PID Feedback The PID feedback input is higher than the level set to b5-36 for longer than the time set to b5-37, and b5-12 is set to 1 or 4.	PROBLEM: 1) Parameter settings for b5-36 and b5-37 are incorrect. 2) PID feedback wiring is faulty. 3) Feedback sensor has malfunctioned. 4) Feedback input circuit is damaged. SOLUTION: 1) Check parameters b5-36 and b5-37 2) Correct the wiring. 3) Check the sensor and replace it if damaged. 4) Replace either the control board or the entire drive. For instructions on replacing the control board, contact Yaskawa or a Yaskawa representative.
FbH	Excessive PID Feedback PID feedback input is greater than the level set to b5-36 for longer than the time set to b5-37. Set b5-12 to 2 or 5 to enable fault detection	PROBLEM: 1) Parameters are set inappropriately 2) Incorrect PID feedback wiring 3) There is a problem with the feedback sensor SOLUTION: 1) Check b5-36 and b5-37 settings 2) Correct the wiring 3) • Check the sensor on the control side. • Replace the sensor if damaged.
FbL	PID Feedback Loss The PID feedback input is lower than the level set to b5-13 for longer than the time set to b5-14.	PROBLEM: 1) Parameter settings for b5-13 and b5-14 are incorrect. 2) PID feedback wiring is faulty. 3) Feedback sensor has malfunctioned. 4) Feedback input circuit is damaged. SOLUTION: 1) Check parameters b5-13 and b5-14. 2) Correct the wiring. 3) Check the sensor and replace it if damaged. 4) Replace either the control board or the entire drive. For instructions on replacing the control board, contact Yaskawa or a Yaskawa representative.
FbL	PID Feedback Loss PID feedback loss detection is programmed to trigger a fault (b5-12 = 2 or 5) and the PID feedback level is below the detection level set to b5-13 for longer than the time set to b5-14.	PROBLEM: 1) Parameters are set inappropriately 2) Incorrect PID feedback wiring 3) There is a problem with the feedback sensor SOLUTION: 1) Check b5-13 and b5-14 settings 2) Correct the wiring 3) • Check the sensor on the control side. • Replace the sensor if damaged.
GF	Ground Fault • A current short to ground exceeded 50% of rated current on the output side of the drive. • Setting L8-09 to 1 enables ground fault detection.	PROBLEM: 1) Motor insulation is damaged 2) A damaged motor cable is creating a short circuit 3) Excessive leakage current at the drive output 4) The drive performed a current offset adjustment while the motor was rotating 5) Hardware problem SOLUTION: 1) • Check the insulation resistance of the motor. • Replace the motor. 2) • Check the motor cable. • Remove the short circuit and reapply power to the drive • Check the resistance between the cable and the ground terminal . • Replace the cable. 3) • Reduce the carrier frequency. • Reduce the amount of stray capacitance. 4) • The set value exceeds the allowable setting range while the drive automatically adjusts the current offset. This generally only happens when attempting to restart a PM motor that is coasting to stop. • Set b3-01 to 1 to enable Speed Search at Start. • Perform Speed Search 1 or 2 (H1-oo = 61 or 62) via one of the external terminals. Note: Speed Searches 1 and 2 are the same when using OLV/PM. 5) If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
Hbb	Safe Disable Signal Input Both Safe Disable Input channels are open.	PROBLEM: 1) Both Safe Disable Inputs H1 and H2 are open. 2) Internally, both Safe Disable channels are broken. SOLUTION: 1) • Check signal status at the input terminals H1 and H2. • Check the Sink/Source Selection for the digital inputs. • If the Safe Disable function is not utilized, determine if terminals H1-HC, and H2-HC are linked. 2) Replace either the control board or the entire drive. For instructions on replacing the control board, contact Yaskawa or your nearest sales representative.
HbbF	Safe Disable Signal Input One Safe Disable channel is open while the other channel is closed.	PROBLEM: 1) The signals to the Safe Disable inputs are wrong or the wiring is incorrect. 2) One of the Safe Disable channels is faulty. SOLUTION: 1) Check signal status at the input terminals H1 and H2. If the Safe Disable function is not utilized, terminals H1-HC, and H2-HC must be linked. 2) Replace either the control board or the entire drive. For instructions on replacing the control board, contact Yaskawa or your nearest sales representative.
HCA	Current Alarm Drive current exceeded overcurrent warning level (150% of the rated current)	PROBLEM: 1) Load is too heavy. 2) Acceleration and deceleration times are too short. 3) A special-purpose motor is being used, or the drive is attempting to run a motor greater than the rated output current. 4) The current level increased due to Speed Search after a momentary power loss or while attempting to perform a fault restart. SOLUTION: 1) Reduce the load for applications with repetitive operations (i.e., stops and starts), or use a larger drive. 2) • Calculate the torque required during acceleration and for the moment of inertia. • If the torque level is not right for the load, take the following steps: • Increase the acceleration and deceleration times (C1-01 through C1-08). • Use a larger drive. 3) • Check the motor capacity. • Use a motor appropriate for the drive. Ensure the motor is within the rated output current range. 4) The alarm will only appear briefly. There is no need to take action to prevent the alarm from occurring in such instances.
iFEr	Communication Error	PROBLEM: 1) A communication error occurred between the drive and the operator or the USB copy unit. 2) A non-compatible cable is being used to connect the USB Copy Unit and the drive. SOLUTION: 1) Check the cable connection. 2) Use the cable originally packaged with the USB Copy Unit.
LF	Output Phase Loss • Phase loss on the output side of the drive. • Setting L8-07 to 1 or 2 enables Phase Loss Detection.	PROBLEM: 1) The output cable is disconnected 2) The motor winding is damaged 3) The output terminal is loose 4) The rated current of the motor being used is less than 5% of the drive rated current 5) An output transistor is damaged 6) A single-phase motor is being used SOLUTION: 1) • Check for wiring errors and properly connect the output cable. • Correct the wiring. 2) • Check the resistance between motor lines. • Replace the motor if the winding is damaged. 3) • Apply the tightening torque specified in this manual to fasten the terminals. Refer to Main Circuit Wire Gauges and Tightening Torques on page 129 for details. 4) Check the drive selection and motor capacities 5) If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board. 6) The drive cannot operate a single phase motor.
LF2	Output Current Imbalance One or more of the phases in the output current are lost.	PROBLEM: 1) Phase loss has occurred on the output side of the drive 2) Terminal wires are loose on the output side of the drive 3) The output circuit is damaged 4) Motor impedance or motor phases are uneven SOLUTION: 1) • Check for faulty wiring or poor connections on the output side of the drive. • Correct the wiring. 2) Apply the tightening torque specified in this manual to fasten the terminals. Refer to Main Circuit Wire Gauges and Tightening Torques on page 129 for details. 3) If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board. 4) • Measure the line-to-line resistance for each motor phase. Ensure all values match. • Replace the motor
LF3	Power Unit Output Phase Loss 3 • Phase loss occurred on the output side • Setting L8-78 to 1 enables Power Unit Output Phase Loss Protection	PROBLEM: 1) The gate drive board in the power unit is damaged. 2) Cable to the current detection circuit in the power unit is damaged or not connected properly. 3) Cable between the output rector and the power unit is loose or not connected. SOLUTION: 1) Cycle the power supply. Refer to Diagnosing and Resetting Faults on page 447 for details. If the fault continues to occur, replace the gate drive board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the gate drive board. 2) Check for incorrect wiring and correct any wiring mistakes 3) Contact Yaskawa or your nearest sales representative for instructions
LSo	LSo Fault Pull-out has been detected at low speed	PROBLEM: 1) The incorrect motor code has been entered. 2) The load is too heavy. 3) The drive incorrectly detected the position of the motor poles 4) Values set to parameters L8-93, L8-94, and L8-95 are incorrect SOLUTION: 1) • Enter the correct motor code for the PM motor being used into E5-01. • For special-purpose motors, enter the correct data to all E5 parameters according to the test report provided for the motor 2) • Reduce the load. • Use a larger drive. 3) • Make sure some external force is not rotating the motor at start. • Enable Speed Search Selection at start. (b3-01 = 1). • If the value displayed in U6-57 is lower than 819, then set the polarity judge current (n8-84) higher than the default value. If the motor is to be operated at a speed higher than the rated speed, consult with the manufacturer. 4) • Increase the value set to L8-93. • Increase the value set to L8-94. • Increase the value set to L8-95.
LT-1	Cooling Fan Maintenance Time The cooling fan has reached its expected maintenance period and may need to be replaced. Note: The signal closes when the maintenance period ends if H2-oo = 2F. The signal will not close if H2-oo = 10.	PROBLEM: 1) The cooling fan has reached 90% of its expected performance life. SOLUTION: 1) Replace the cooling fan and set o4-03 to 0 to reset the Maintenance Monitor.
LT-2	Capacitor Maintenance Time The main circuit and control circuit capacitors are nearing the end of their expected performance life. Note: The signal closes when the maintenance period ends if H2-oo = 2F. The signal will not close if H2-oo = 10.	PROBLEM: 1) The main circuit and control circuit capacitors have reached 90% of their expected performance lives. SOLUTION: 1) Replace the drive.
LT-3	Soft Charge Bypass Relay Maintenance Time The DC bus soft charge relay is nearing the end of its expected performance life. Note: The signal closes when the maintenance period ends if H2-oo = 2F. The signal will not close if H2-oo = 10.	PROBLEM: 1) The DC bus soft charge relay has reached 90% of expected performance life. SOLUTION: 1) Replace the drive
LT-4	IGBT Maintenance Time (50%) IGBTs have reached 50% of their expected performance life. Note: The signal closes when the maintenance period ends if H2-oo = 2F. The signal will not close if H2-oo = 10.	PROBLEM: 1) IGBTs have reached 50% of their expected performance life. SOLUTION: 1) Check the load, carrier frequency, and output frequency.
ndAT	Model, Voltage Class, Capacity Mismatch	PROBLEM: 1) The drive from which the parameters were copied and the drive to which the parameters will be written have different electrical specifications, capacities, are set to different control modes, or are different models. 2) The device being used to write the parameters is blank and does not have any parameters saved on it. SOLUTION: 1) Make sure model numbers and specifications are the same for both drives. 2) Make sure all connections are correct, and copy the parameter settings onto the USB Copy Unit or the operator.
nSE	Node Setup Error A terminal assigned to the node setup function closed during run.	PROBLEM: 1) Overcurrent occurred during Overexcitation Deceleration. 2) The node setup terminal closed during run. A Run command was issued while the node setup function was active. SOLUTION: 1) Reduce the overexcitation deceleration gain (n3–13). 2) Stop the drive when using the node setup function.
oC	Overcurrent Drive sensors detected an output current greater than the specified overcurrent level.	PROBLEM: 1) The motor has been damaged due to overheating or the motor insulation is damaged 2) One of the motor cables has shorted out or there is a grounding problem 3) The drive is damaged 4) The load is too heavy 5) The acceleration or deceleration times are too short 6) The drive is attempting to operate a specialized motor or a motor larger than the maximum size allowed 7) Magnetic contactor (MC) on the output side of the drive has turned on or off 8) V/f setting is not operating as expected 9) Excessive torque compensation 10) Drive fails to operate properly due to electrical signal interference 11) Overexcitation gain is set too high 12) Run command was applied while motor was coasting 13) The wrong motor code has been entered for OLV/PM (Yaskawa motors only) or the motor data are wrong 14) The overcurrent level has exceeded the value set to L8-27 (PM control modes) 15) The motor control method and motor do not match 16) The rated output current of the drive is too small SOLUTION: 1) • Check the insulation resistance. • Replace the motor. 2) • Check the motor cables. • Remove the short circuit and reapply power to the drive • Check the resistance between the motor cables and the ground terminal . • Replace damaged cables. 3) • Check the drive output side short circuit for a broken output transistor B1 and U/T1, V/T2, W/T3 – and U/T1, V/T2, W/T3 • Contact your Yaskawa representative or nearest Yaskawa sales office 4) • Measure the current flowing into the motor. • Replace the drive with a larger capacity drive if the current value exceeds the rated current. • Determine if there is sudden fluctuation in the current level. • Reduce the load to avoid sudden changes in the current level or switch to a larger drive. 5) Calculate the torque needed during acceleration relative to the load inertia and the specified acceleration time. If it is not possible to set the proper amount of torque, make the following changes: • Increase the acceleration time (C1-01, C1-03, C1-05, C1-07) • Increase the S-curve characteristics (C2-01 through C2-04) • Increase the capacity of the drive. 6) • Check the motor capacity. • Ensure that the rated capacity of the drive is greater than or equal to the capacity rating found on the motor nameplate. 7) Set up the operation sequence so the MC does not trip while the drive is outputting current. 8) • Check the ratios between the voltage and frequency. • Set parameters E1-04 through E1-10 appropriately (E3-04 through E3-10 for motor 2). • Lower the voltage if it is too high relative to the frequency. 9) • Check the amount of torque compensation. • Reduce the torque compensation gain (C4-01) until there is no speed loss and less current 10) • Review the possible solutions provided for handling electrical signal interference. • Review the section on handling noise interference on page 454 and check the control circuit lines, main circuit lines, and ground wiring. 11) • Check if the fault occurs simultaneously with overexcitation function operation. • Consider motor flux saturation and reduce the value of n3-13 (Overexcitation Deceleration Gain). 12) • Set b3-01 to 1 to enable Speed Search at Start. • Program the Speed Search command input through one of the multi-function contact input terminals (H1-oo = 61 or 62). 13) • Enter the correct motor code to E5-01. • Set E5-01 to FFFF if using a non-Yaskawa PM motor. Set the correct motor data to the E5-oo parameters or perform Auto-Tuning 14) Correct the value set to overcurrent detection gain (L8-27) 15) • Check the control mode. • For IM motors, set A1-02 to 0, 1, 2, or 3. • For PM motors, set A1-02 to 5, 6, or 7. 16) Use a larger drive
oFA00	Option Card Connection Error at Option Port CN5-A Option compatibility error	PROBLEM: 1) The option card installed into port CN5-A is incompatible with the drive 2) A PG option card is connected to option port CN5-A SOLUTION: 1) Check if the drive supports the option card to be installed. Contact Yaskawa or a Yaskawa representative for assistance 2) PG option cards are supported by option ports CN5-B and CN5-C only. Connect the PG option card to the correct option port.
oFA01	Option Card Fault at Option Port CN5-A Option not properly connected	PROBLEM: 1) The option card connection to port CN5-A is faulty SOLUTION: 1) • Turn off the power and reconnect the option card. • Check if the option card is properly plugged into the option port. Make sure the card is fixed properly. • If the option is not a communication option card, try to use the card in a different option port. If the option card works properly in a different option port, CN5-A is damaged, and the drive requires replacement. If the error persists (oFb01 or oFC01 occur), replace the option card.
oFA03	Option Card Error Occurred at Option Port CN5-A	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFA04	Option Card Error Occurred at Option Port CN5-A	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFA05	Option Card Error Occurred at Option Port CN5-A	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFA06	Option Card Error Occurred at Option Port CN5-A	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFA10	Option Card Error Occurred at Option Port CN5-A	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFA12	Option Card Connection Error (CN5-A)	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFA13	Option Card Connection Error (CN5-A)	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFA14	Option Card Connection Error (CN5-A)	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFA15	Option Card Connection Error (CN5-A)	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFA16	Option Card Connection Error (CN5-A)	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFA17	Option Card Connection Error (CN5-A)	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFA30	Communication Option Card Connection Error (CN5-A)	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFA31	Communication Option Card Connection Error (CN5-A)	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFA32	Communication Option Card Connection Error (CN5-A)	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFA33	Communication Option Card Connection Error (CN5-A)	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFA34	Communication Option Card Connection Error (CN5-A)	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFA35	Communication Option Card Connection Error (CN5-A)	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFA36	Communication Option Card Connection Error (CN5-A)	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFA37	Communication Option Card Connection Error (CN5-A)	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFA38	Communication Option Card Connection Error (CN5-A)	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFA39	Communication Option Card Connection Error (CN5-A)	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFA40	Communication Option Card Connection Error (CN5-A)	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFA41	Communication Option Card Connection Error (CN5-A)	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFA42
oFA43
oFb00	Option Card Fault at Option Port CN5-B Option compatibility error	PROBLEM: 1) The option card installed into port CN5-B is incompatible with the drive 2) A communication option card has been installed in option port CN5-B SOLUTION: 1) Make sure the drive supports the option card to be installed. Contact Yaskawa or a Yaskawa representative for assistance 2) Communication option cards are only supported by option port CN5-A. It is not possible to install more than one communication option.
oFb01	Option Card Fault at Option Port CN5-B Option not properly connected	PROBLEM: 1) The option card connection to port CN5-B is faulty SOLUTION: 1) • Turn off the power and reconnect the option card. • Check if the option card is properly plugged into the option port. Make sure the card is fixed properly. • Try to use the card in a different option port (in case of a PG option, use port CN5-C). If the option card works properly in a different option port, CN5-B is damaged, and the drive requires replacement. If the error persists (oFA01 or oFC01 occur), replace the option card
oFb02	Option Card Fault at Option Port CN5-B Same type of option card is currently connected	PROBLEM: 1) An option card of the same type is already installed in option port CN5-A 2) An input option card is already installed in option port CN5-A SOLUTION: 1) Except for PG options, only one of each option card type can only be installed simultaneously. Make sure only one type of option card is connected. 2) Install a communication option, a digital input option, or an analog input option. More than one of the same type of card cannot be installed simultaneously.
oFb03	Option card error occurred at Option Port CN5-B	PROBLEM: Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFb04	Option card error occurred at Option Port CN5-B	PROBLEM: Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFb05	Option card error occurred at Option Port CN5-B	PROBLEM: Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFb06	Option card error occurred at Option Port CN5-B	PROBLEM: Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFb07	Option card error occurred at Option Port CN5-B	PROBLEM: Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFb08	Option card error occurred at Option Port CN5-B	PROBLEM: Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFb09	Option card error occurred at Option Port CN5-B	PROBLEM: Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFb10	Option card error occurred at Option Port CN5-B	PROBLEM: Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFb11	Option card error occurred at Option Port CN5-B	PROBLEM: Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFb12	Option card error occurred at Option Port CN5-B	PROBLEM: Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFb13	Option card error occurred at Option Port CN5-B	PROBLEM: Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFb14	Option card error occurred at Option Port CN5-B	PROBLEM: Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFb15	Option card error occurred at Option Port CN5-B	PROBLEM: Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFb16	Option card error occurred at Option Port CN5-B	PROBLEM: Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFb17	Option card error occurred at Option Port CN5-B	PROBLEM: Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFC00	Option Card Connection Error at Option Port CN5-C Option compatibility error	PROBLEM: 1) The option card installed into port CN5-C is incompatible with the drive 2) A communication option card has been installed in option port CN5-C SOLUTION: 1) Confirm that the drive supports the option card to be installed. Contact Yaskawa or a Yaskawa representative for assistance. 2) Communication option cards are only supported by option port CN5-A. It is not possible to install more than one communication option.
oFC01	Option Card Fault at Option Port CN5-C Option not properly connected	PROBLEM: 1) The option card connection to port CN5-C is faulty SOLUTION: 1) • Turn the power off and reconnect the option card. • Check if the option card is properly plugged into the option port. Make sure the card is fixed properly. • Try to use the card in a different option port (in case of a PG option, use port CN5-B). If the option card works properly in a different option port, CN5-C is damaged, and the drive requires replacement. If the error persists (oFA01 or oFb01 occur), replace the option card
oFC02	Option Card Fault at Option Port CN5-C Same type of option card is currently connected	PROBLEM: 1) An option card of the same type is already installed in option port CN5-A or CN5-B. 2) An input option card is already installed in option port CN5-A or CN5-B. 3) Three PG option boards are installed. SOLUTION: 1) Except for PG options, only one of each option card type can only be installed simultaneously. Make sure only one type of option card is connected. 2) Install a communication option, a digital input option, or an analog input option. More than one of the same type of card cannot be installed simultaneously. 3) A maximum of two PG option boards can be used simultaneously. Remove the PG option board installed into option port CN5-A.
oFC03	Option Card Error Occurred at Option Port CN5-C	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFC04	Option Card Error Occurred at Option Port CN5-C	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFC05	Option Card Error Occurred at Option Port CN5-C	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFC06	Option Card Error Occurred at Option Port CN5-C	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFC07	Option Card Error Occurred at Option Port CN5-C	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFC08	Option Card Error Occurred at Option Port CN5-C	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFC09	Option Card Error Occurred at Option Port CN5-C	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFC10	Option Card Error Occurred at Option Port CN5-C	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFC11	Option Card Error Occurred at Option Port CN5-C	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFC12	Option Card Error Occurred at Option Port CN5-C	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFC13	Option Card Error Occurred at Option Port CN5-C	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFC14	Option Card Error Occurred at Option Port CN5-C	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFC15	Option Card Error Occurred at Option Port CN5-C	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFC16	Option Card Error Occurred at Option Port CN5-C	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFC17	Option Card Error Occurred at Option Port CN5-C	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) • Cycle power to the drive. • If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for instructions on replacing the control board.
oFC50	Option Card Error Occurred at Option Port CN5-C	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) Refer to the option manual for details.
oFC51	Option Card Error Occurred at Option Port CN5-C	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) Refer to the option manual for details.
oFC52	Option Card Error Occurred at Option Port CN5-C	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) Refer to the option manual for details.
oFC53	Option Card Error Occurred at Option Port CN5-C	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) Refer to the option manual for details.
oFC54	Option Card Error Occurred at Option Port CN5-C	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) Refer to the option manual for details.
oFC55	Option Card Error Occurred at Option Port CN5-C	PROBLEM: 1) Option card or hardware is damaged SOLUTION: 1) Refer to the option manual for details.
oH	Heatsink Overheat The heatsink temperature exceeded the overheat pre-alarm level set to L8-02. The default value for L8-02 is determined by drive model selection (o2-04)	PROBLEM: 1) Surrounding temperature is too high 2) Load is too heavy 3) Internal cooling fan is stopped SOLUTION: 1) • Check the temperature surrounding the drive. Verify temperature is within drive specifications. • Improve the air circulation within the enclosure panel. • Install a fan or air conditioner to cool the surrounding area. • Remove anything near the drive that might be producing excessive heat. 2) • Measure the output current. • Decrease the load. • Lower the carrier frequency selection (C6-02). 3) • Replace the cooling fan. • After replacing the cooling fan, set parameter o4-03 to 0 to reset the cooling fan maintenance.
oH	Heatsink Overheat The temperature of the heatsink exceeded the overheat pre-alarm level set to L8-02 (90-100 °C). Default value for L8-02 is determined by drive model selection (o2-04)	PROBLEM: 1) Surrounding temperature is too high 2) Internal cooling fan has stopped. 3) Airflow around the drive is restricted. SOLUTION: 1) • Check the surrounding temperature. • Improve the air circulation within the enclosure panel. • Install a fan or air conditioner to cool surrounding area. • Remove anything near drive that may cause extra heat 2) • Replace the cooling fan. • After replacing the drive, set parameter o4-03 to 0 to reset the cooling fan operation time 3) • Provide proper installation space around the drive as indicated in the manual. Refer to Installation Orientation and Spacing on page 54 for details. • Allow for the proper space and ensure that there is sufficient circulation around the control panel • Check for dust or other foreign materials clogging the cooling fan. • Clear debris caught in the fan that restricts air circulation.
oH1	Overheat 1 (Heatsink Overheat) The heatsink temperature exceeded the drive overheat level. Overheat level is determined by drive capacity (o2-04).	PROBLEM: 1) Surrounding temperature is too high 2) Load is too heavy SOLUTION: 1) • Check the temperature surrounding the drive. • Improve the air circulation within the enclosure panel. • Install a fan or air conditioner to cool the surrounding area. • Remove anything near the drive that might be producing excessive heat. 2) • Measure the output current. • Lower the carrier frequency selection (C6-02). • Reduce the load.
oH2	Heatsink Overheat Warning “Heatsink Overheat Warning” was input to a multi-function input terminal, S1 through S8 (H1-oo= B).	PROBLEM: 1) An external device triggered an overheat warning in the drive SOLUTION: 1) Search for the device that tripped the overheat warning. Remove the cause of the problem.
oH3	Motor Overheat Alarm (PTC Input) • The motor overheat signal to analog input terminal A1, A2, or A3 exceeded the alarm detection level. • Detection requires setting multi-function analog inputs H3-02, H3-10, or H3-06 to E.	PROBLEM: 1) Motor has overheated SOLUTION: 1) • Check the size of the load, the accel/decel times, and the cycle times. • Decrease the load. • Increase the acceleration and deceleration times (C1-01 through C1-08). • Adjust the preset V/f pattern (E1-04 through E1-10) by reducing E1-08 and E1-10. • Do not set E1-08 and E1-10 too low. This reduces load tolerance at low speeds. • Check the motor rated current. • Enter the motor rated current to parameter E2-01 as indicated on the motor nameplate. • Ensure the motor cooling system is operating normally. • Repair or replace the motor cooling system.
oH3	Motor Overheat The motor overheat signal entered to a multi-function analog input terminal exceeded the alarm level (H3-02, H3-06 or H3-10 = E).	PROBLEM: 1) Motor thermostat wiring is faulty (PTC input). 2) There is a fault on the machine side (e.g., the machine is locked up). 3) Motor has overheated. SOLUTION: 1) Repair the PTC input wiring. 2) • Check the status of the machine. • Remove the cause of the fault 3) • Check the load size, accel/decel times, and cycle times. • Decrease the load. • Increase accel and decel times (C1-01 to C1-08). • Adjust the preset V/f pattern (E1-04 through E1-10). This involves reducing E1-08 and E1-10. Note: Refrain from lowering E1-08 and E1-10 excessively to prevent a reduction in load tolerance at low speeds. • Check the motor-rated current. • Enter motor-rated current on motor nameplate (E2-01). • Ensure the motor cooling system is operating normally. • Repair or replace the motor cooling system
oH4	Motor Overheat Fault (PTC Input) • The motor overheat signal to analog input terminal A1, A2, or A3 exceeded the fault detection level. • Detection requires setting multi-function analog inputs H3-02, H3-10, or H3-06 to E.	PROBLEM: 1) Motor has overheated SOLUTION: 1) • Check the size of the load, the accel/decel times, and the cycle times. • Decrease the load. • Increase the acceleration and deceleration times (C1-01 through C1-08). • Adjust the preset V/f pattern (E1-04 through E1-10) by reducing E1-08 and E1-10. • Do not set E1-08 and E1-10 too low. This reduces load tolerance at low speeds. • Check the motor rated current. • Enter the motor rated current to parameter E2-01 as indicated on the motor nameplate. • Ensure the motor cooling system is operating normally. • Repair or replace the motor cooling system.
oH5	Motor Overheat (NTC Input) The motor temperature exceeded the level set to L1-16 (or L1-18 for motor 2)	PROBLEM: 1) Motor has overheated SOLUTION: 1) • Reduce the load. • Check the ambient temperature
oH5	Motor Overheat (NTC Input) The motor temperature exceeded the level set to L1-16 (or L1-18 for motor 2)	PROBLEM: 1) Motor has overheated. SOLUTION: 1) • Reduce the load. • Check the ambient temperature.
oL1	Motor Overload The electronic motor overload protection tripped	PROBLEM: 1) Load is too heavy 2) Cycle times are too short during acceleration and deceleration 3) A general-purpose motor is driven below the rated speed with a high load 4) V/f characteristics (voltage and frequency) are not suitable 5) The wrong motor rated current is set to E2-01 6) Multiple motors are running off the same drive 7) The electrical thermal protection characteristics and motor overload characteristics do not match 8) The electrical thermal relay is operating at the wrong level 9) Motor overheated by overexcitation operation 10) Parameters related to Speed Search are set incorrectly 11) Output current fluctuation due to power supply loss SOLUTION: 1) Reduce the load. Note: Reset oL1 when the U4-16 value falls below 100.0%. U4-16 value must be less than 100.0% before oL1 can be reset. 2) Increase the acceleration and deceleration times (C1-01 through C1-08). 3) • Reduce the load. • Increase the speed. • If the motor is supposed to operate at low speeds, either increase the motor capacity or use a motor specifically designed to operate in the desired speed range. 4) Set the V/f pattern setting parameters (E1-04 to E1-10) to match the motor characteristics. 5) • Check the motor-rated current. • Enter the motor rated current to parameter E2-01 as indicated on the motor nameplate. 6) Set L1-01 to 0 to disable the motor protection function and then install a thermal relay to each motor. 7) • Check the motor characteristics. • Correct the type of motor protection that has been selected (L1-01). • Install an external thermal relay. 8) • Check the current rating listed on the motor nameplate. • Check the value set for the motor rated current (E2-01). 9) • Overexcitation increases the motor loss and the motor temperature. Excessive duration of overexcitation may cause motor damage. Prevent excessive overexcitation operation or apply proper cooling to the motor. • Reduce the excitation deceleration gain (n3-13). • Set L3-04 (Stall Prevention during Deceleration) to a value other than 4. • Set n3-23 (Overexcitation Operation Selection) to 0 (disabled). 10) • Check values set to Speed Search related parameters. • Adjust the Speed Search current and Speed Search deceleration times (b3-02 and b3-03 respectively). • After Auto-Tuning, set b3-24 to 1 to enable Speed Estimation Speed Search 11) Check the power supply for phase loss.
oL2	Drive Overload The thermal sensor of the drive triggered overload protection.	PROBLEM: 1) Load is too heavy 2) Acceleration or deceleration time is too short 3) V/f characteristics (voltage) are not suitable 4) Drive capacity is too small 5) Overload occurred when operating at low speeds 6) Excessive torque compensation 7) Parameters related to Speed Search are set incorrectly 8) Output current fluctuation due to input phase loss SOLUTION: 1) Reduce the load 2) Increase the settings for the acceleration and deceleration times (C1-01 through C1-08) 3) Set the V/f pattern setting parameters (E1-04 to E1-10) to match the motor characteristics 4) Replace the drive with a larger model 5) • Reduce the load when operating at low speeds. • Replace the drive with a model that is one frame size larger. • Lower the carrier frequency (C6-02) 6) Reduce the torque compensation gain in parameter C4-01 until there is no speed loss but less current 7) • Check the settings for all Speed Search related parameters. • Adjust the current used during Speed Search (b3-03) and the Speed Search deceleration time (b3-02). • After Auto-Tuning, set b3-24 to 1 to enable Speed Estimation Speed Search. 8) Check the power supply for phase loss
oL3	Overtorque Detection 1 The current has exceeded the value set for Torque Detection Level 1 (L6-02) for longer than the allowable time (L6-03).	PROBLEM: 1) Parameter settings are not appropriate for the load 2) Fault on the machine side (e.g., machine is locked up) SOLUTION: 1) Check L6-02 and L6-03 settings 2) Check the status of the load. Remove the cause of the fault.
oL3	Overtorque 1 Drive output current (or torque in OLV, CLV, AOLV/PM, and CLV/PM) was greater than L6-02 for longer than the time set to L6-03.	PROBLEM: 1) Inappropriate parameter settings 2) There is a fault on the machine side (e.g., the machine is locked up). SOLUTION: 1) Check parameters L6-02 and L6-03. 2) • Check the status of the machine. • Remove the cause of the fault.
oL4	Overtorque Detection 2 The current has exceeded the value set for Torque Detection Level 2 (L6-05) for longer than the allowable time (L6-06).	PROBLEM: 1) Parameter settings are not appropriate for the load 2) A fault occurred on the machine (e.g., the machine is locked up when overtorque occurs.). SOLUTION: 1) Check the settings of parameters L6-05 and L6-06. 2) Check the status of the machine. Remove the cause of the fault
oL4	Overtorque 2 Drive output current (or torque in OLV, CLV, AOLV/PM, CLV/PM) was greater than L6-05 for longer than the time set to L6-06.	PROBLEM: 1) Parameter settings are not appropriate. 2) There is a fault on the machine side (e.g., the machine is locked up). SOLUTION: 1) Check parameters L6-05 and L6-06. 2) • Check the status of the machine being used. • Remove the cause of the fault.
oL5	Mechanical Weakening Detection 1 Overtorque occurred, matching the conditions specified in L6-08.	PROBLEM: 1) Overtorque triggered mechanical weakening detection level set to L6-08 SOLUTION: 1) Identify the cause of mechanical weakening
oL5	Mechanical Weakening Detection 1 Overtorque occurred, matching the conditions specified in L6-08.	PROBLEM: 1) Overtorque occurred, triggering the mechanical weakening level set to L6-08. SOLUTION: 1) Check for the cause of mechanical weakening.
oL7	High Slip Braking oL The output frequency stayed constant for longer than the time set to n3-04 during High Slip Braking	PROBLEM: 1) Excessive load inertia Motor is driven by the load Something on the load side is restricting deceleration 2) The overload time during High Slip Braking is too short SOLUTION: 1) • Reduce deceleration times in parameters C1-02, C1-04, C1-06, and C1-08 for applications that do not use High Slip Braking. • Use a braking resistor to shorten deceleration time. 2) • Increase parameter n3-04 (High-slip Braking Overload Time). • Install a thermal relay and increase the setting of n3-04 to maximum value.
oPE01	Drive Capacity Setting Fault Drive capacity and the value set to o2-04 do not match.	PROBLEM: 1) The drive model selection (o2-04) and the actual capacity of the drive are not the same. SOLUTION: 1) Correct the value set to o2-04.
oPE02	Parameter Range Setting Error Use U1-18 to find parameters set outside the range.	PROBLEM: 1) Parameters were set outside the possible setting range. SOLUTION: 1) Set parameters to the proper values
oPE03	Multi-Function Input Selection Error A contradictory setting is assigned to multi-function contact inputs H1-01 to H1-08.	PROBLEM: 1) • The same function is assigned to two multi-function inputs. • Excludes “Not used” and “External Fault.” 2) The Up command was set but the Down command was not, or vice versa(settings 10 vs. 11). The Up 2 command was set but the Down 2 command was not, or vice versa functions. (settings 75 vs. 76). 3) • Run/Stop command for a 2-wire sequence was set (H1-oo = 42), but Forward/Reverse command (H1-oo = 43) was not. • “Drive Enable” is set to multi-function input S1 or S2 (H1-01 = 6A or H1-02 = 6A). 4) Two of the following functions are set simultaneously: • Up/Down Command (10 vs. 11) • Up 2/Down 2 Command (75 vs. 76) • Hold Accel/Decel Stop (A) • Analog Frequency Reference Sample/Hold (1E) • Offset Frequency 1, 2, 3 Calculations (44, 45, 46) 5) The Up/Down command (10, 11) and PID control (b5-01) are enabled simultaneously. 6) Settings for N.C. and N.O. input for the following functions were selected simultaneously: • External Search Command 1 and External Search Command 2 (61 vs. 62) • Fast Stop N.O. and Fast Stop N.C. (15 vs. 17) • KEB for Momentary Power Loss and High Slip Braking (65, 66, 7A, 7B vs. 68) • Motor Switch Command and Accel/Decel Time 2 (16 vs. 1A) • KEB Command 1 and KEB Command 2 (65, 66 vs. 7A, 7B) • FWD Run Command (or REV) and FWD/REV Run Command (2-wire) (40, 41 vs. 42, 43) • External DB Command and Drive Enable (60 vs. 6A) • Motor Switch Command and Up 2/Down 2 Command (16 vs. 75, 76) 7) One of the following settings was entered while H1-oo = 2 (External Reference 1/2): • b1-15 = 4 (Pulse Train Input) but the pulse train input selection is not set for the frequency reference (H6-01 > 0) • b1-15 or b1-16 set to 3 but no option card is connected • Although b1-15 = 1 (Analog Input) and H3-02 or H3-10 are set to 0 (Frequency Bias) H2-oo is set to 38 (Drive Enabled) and H1-oo is not set to 6A (Drive Enable). H1-oo is set to 7E (Direction Detection) and H6-01 is not set to 3 (for V/f Control with PG using terminal RP as speed feedback input). 8) H1-oo is set to 16 when using PG-RT3. SOLUTION: 1) • Ensure all multi-function inputs are assigned to different functions. • Re-enter the multi-function settings to ensure this does not occur. 2) Properly set the functions that required for use in combination with other functions. 3) Properly set the functions that required for use in combination with other functions. 4) • Check if contradictory settings have simultaneously been assigned to the multi-function input terminals. • Correct setting errors. 5) Set b5-01 to 0 to disable control PID or disable the Up/Down command. 6) • Check if contradictory settings have simultaneously been assigned to the multi-function input terminals. • Correct setting errors. 7) Correct the settings for the multi-function input terminal parameters. 8) Correct the setting. PG-RT3 is not available for the application with Motor 2 selection.
oPE04	Initialization Required	PROBLEM: 1) The drive, control board, or terminal board have been replaced and the parameter settings between the control board and the terminal board no longer match. SOLUTION: 1) Set A1-03 to 5550 to load the parameter settings stored in the terminal board to the drive. Initialize parameters after drive replacement by setting A1-03 to 2220 or 3330.
oPE05	Run Command/Frequency Reference Source Selection Error	PROBLEM: 1) Frequency reference is assigned to an option card (b1-01 = 3) and an input option card is not connected to the drive. The Run command is assigned to an option card (b1-02 = 3) and an input option card is not connected to the drive. 2) Frequency reference is assigned to the pulse train input (b1-01 = 4) and terminal RP is not set for frequency reference input (H6-01 > 0) 3) Although the digital card input is set for BCD special for a 5-digit input (F3-01 = 6), the data length is set for 8-bit or 12-bit (F3-03 = 0, 1). 4) The following values have been set while an AI-A3 option card is installed: • The source of frequency reference setting is assigned to an option card (b1-01 = 3). • The action for the analog card is set for separate terminal input (F2-01 = 0). SOLUTION: 1) Reconnect the input option card to the drive. 2) Set H6-01 to 0. 3) Set F3-03 to 2 to set the input data for 16-bit. 4) Properly set parameters.
oPE06	Control Method Selection Error Correct the setting for the control method.	PROBLEM: 1) A control mode has been selected that requires a PG option card to be installed, but no PG encoder is installed (A1-02 = 1, 3, or 7). SOLUTION: 1) • Connect a PG option card. • Correct the value set to A1-02.
oPE07	Multi-Function Analog Input Selection Error A contradictory setting is assigned to multi-function analog inputs H3-02, H3-10, or H3-06 and PID functions conflict.	PROBLEM: 1) At least two analog input terminals are set to the same function (i.e., at least two of these parameters have the same setting: H3-02, H3-10, or H3-06). 2) The following simultaneous contradictory settings: • H3-02, H3-10, or H3-06 = B (PID Feedback) while H6-01 (Pulse Train Input) = 1 (PID Feedback) • H3-02, H3-10, or H3-06 = C (PID Target Value) while H6-01 = 2 (pulse train input sets the PID target value) • H3-02, H3-10, or H3-06 = C (PID Target Value) while b5-18 = 1 (enables b5-19 as the target PID value) • H6-01 = 2 (PID target) while b5-18 = 1 (enables b5-19 as the target PID value) SOLUTION: 1) Change the settings to H3-02, H3-10, and H3-06 so that functions no longer conflict. Note: Both 0 (Frequency Reference Bias) and F (Not Used) can be set to H3-02, H3-10, or H3-06 simultaneously. 2) Disable one of the PID selections.
oPE08	Parameter Selection Error A function has been set that cannot be used in the motor control method selected.	PROBLEM: 1) Attempted to use a function that is not valid for the selected control mode. 2) In OLV, n2-02 is longer than n2-03 3) In OLV, C4-02 is longer than C4-06 4) In OLV/PM, parameters E5-02 to E5-07 are set to 0. 5) The following settings have occurred in OLV/PM: • E5-03 does not equal 0 • E5-09 and E5-24 are both equal to 0, or neither equals 0 6) In AOLV/PM High Frequency Injection is disabled (n8-57 = 0) and the minimum frequency (E1-09) is set lower than 1/20 of the base frequency setting. SOLUTION: 1) Check the motor control method and the functions available. 2) Adjust parameter values so n2-02 is shorter than n2-03. 3) Adjust parameter values so C4-02 is shorter than C4-06. 4) • Set the correct motor code in accordance with the motor being used (E5-01). • When using a special-purpose motor, set E5-oo in accordance with the test report provided. 5) • Set E5-09 or E5-24 to the correct value, and set the other to 0. • Set the motor rated current for PM to 0 (E5-03). 6) Correct the parameter settings or set n8-57 to 1 to enable High Frequency Injection.
oPE09	PID Control Selection Fault PID control function selection is incorrect. Requires that PID control is enabled (b5-01 = 1 to 4).	PROBLEM: 1) The following simultaneous contradictory settings have occurred: • b5-15 is not set to 0.0 (PID Sleep Function Operation Level) • The stopping method is set to either DC Injection Braking or coast to stop with a timer (b1-03 = 2 or 3). 2) b5-01 is set to 1 or 2, enabling PID control, but the lower limit for the frequency reference (d2-02) is not set to 0 while reverse output is enabled (b5-11 = 1). 3) b5-01 is set to 3 or 4, enabling PID control, but the lower limit for the frequency reference (d2-01) is not 0. SOLUTION: 1) • Set b5-15 to a value other than 0.0. • Set the stopping method to coast to stop or ramp to stop (b1-03 = 0 or 1). 2) Correct the parameter settings. 3) Correct the parameter settings.
oPE10	V/f Data Setting Error One or more of the parameters listed below are not set according to the formula: • E1-09 ≤ E1-07 < E1-06 ≤ E1-11 ≤ E1-04 • E3-09 ≤ E3-07 < E3-06 ≤ E3-11 ≤ E3-04	PROBLEM: 1) V/f pattern setting error. SOLUTION: 1) Correct the settings for E1-04, E1-06, E1-07, E1-09, and E1-11. For motor 2, correct E3-04, E3-06, E3-07, E3-09, and E3-11.
oPE11	Carrier Frequency Setting Error Correct the setting for the carrier frequency.	PROBLEM: 1) The following simultaneous contradictory settings have occurred: C6-05 > 6 and C6-04 > C6-03 (carrier frequency lower limit is greater than the upper limit). If C6-05 ≤ 6, the drive operates at C6-03. The upper and lower limits between C6-02 and C6-05 are contradictory. SOLUTION: 1) Correct the parameter settings.
oPE13	Pulse Monitor Selection Error Incorrect setting of monitor selection for pulse train (H6-06).	PROBLEM: 1) Scaling for the pulse train monitor is set to 0 (H6-07 = 0) while H6-06 is not set to 101, 102, 105, or 116. SOLUTION: 1) Change scaling for the pulse train monitor or set H6-06 to 101, 102, 105, or 116.
oPE15	Torque Control Setting Error Parameter settings that are not allowed in combination with Torque Control have been set.	PROBLEM: 1) Torque Control is enabled (d5-01 = 1) while the Speed/Torque Control switch function is assigned to a digital input (H1-oo = 71). 2) Either d5-01 is set to 1 to enable Torque Control, or the Speed/Torque Control switch is assigned to a digital input H1-oo = 71, while at the same time: • Feed Forward is enabled (n5-01 = 1), or • Droop Control is enabled (b7-01 ≠ 0), or • Intelligent Stall Prevention or Intelligent Stall Prevention 2 is enabled (L3-04 = 2 or 5), or • A digital input is set for the power KEB 1 or KEB 2 (H1-oo = 7A or 7B) SOLUTION: 1) Correct the parameter settings. 2) Correct the parameter settings.
oPE16	Energy Savings Constants Error	PROBLEM: 1) In AOLV/PM, the automatically calculated energy saving coefficients are out of the allowable range. SOLUTION: 1) Check and correct the motor data in E5 parameters.
oPE18	Online Tuning Parameter Setting Error Parameters controlling online tuning are not set correctly.	PROBLEM: 1) One of the following errors occurred while online tuning was enabled in OLV (A1-02 = 2): • E2-02 was set below 30% of the original default value • E2-06 was set below 50% of the original default value • E2-03 = 0 SOLUTION: 1) Set E2-02, E2-03, and E2-06 to the correct values.
oPE20	PG-F3 Setting Error The encoder signal frequency is too high.	PROBLEM: 1) With the entered encoder resolution (F1-01), maximum output frequency (E1-04), and motor pole number (E5-04), the calculation encoder signal frequency exceeded 50 kHz (with PG-F3 option). SOLUTION: 1) • Set F1-01 to the correct encoder resolution. • Reduce the maximum output frequency of the drive in parameter E1-04 so the encoder signal frequency at maximum speed is lower than 50 kHz.
oPr	External Digital Operator Connection Fault The external operator has been disconnected from the drive. Note: An oPr fault will occur when all of the following conditions are true: • Output is interrupted when the operator is disconnected (o2-06 = 1). • The Run command is assigned to the operator (b1-02 = 0 and LOCAL has been selected)	PROBLEM: 1) External operator is not properly connected to the drive SOLUTION: 1) • Check the connection between the operator and the drive. • Replace the cable if damaged. • Turn off the drive input power and disconnect the operator. Reconnect the operator and reapply drive input power.
oS	Overspeed The motor speed feedback exceeded the F1-08 setting	PROBLEM: 1) Overshoot is occurring 2) Incorrect speed feedback scaling if terminal RP is used as speed feedback input in V/f control 3) Incorrect number of PG pulses has been set 4) Inappropriate parameter settings SOLUTION: 1) • Reduce the C5-01, Speed Control Proportional Gain 1, setting and increase the C5-02, Speed Control Integral Time 1, setting. • If using Closed Loop Vector mode, enable Feed Forward and perform Inertia Auto-Tuning. 2) • Set H6-02 to the value of the speed feedback signal frequency when the motor runs at the maximum speed. • Adjust the input signal using parameters H6-03 through H6-05. 3) Check and correct parameter F1-01 4) Check the setting for the overspeed detection level and the overspeed detection time (F1-08 and F1-09).
oS	Overspeed The motor speed feedback exceeded the F1-08 setting	PROBLEM: 1) Overshoot is occurring. 2) Incorrect speed feedback scaling if terminal RP is used as speed feedback input in V/f control 3) Incorrect PG pulse number has been set 4) Inappropriate parameter settings SOLUTION: 1) • Increase the settings for C5-01 (Speed Control Proportional Gain 1) and reduce C5-02 (Speed Control Integral Time 1). • If using a Closed Loop Vector mode enable Feed Forward Control and perform Inertia Auto-Tuning. 2) • Set H6-02 to value of the speed feedback signal frequency when the motor runs at the maximum speed. • Adjust the input signal using parameters H6-03 through H6-05. 3) Check and correct parameter F1-01. 4) Check the setting for the overspeed detection level and the overspeed detection time (F1-08 and F1-09).
ov	DC Bus Overvoltage The DC bus voltage exceeded the trip point. • For 200 V class drives: approximately 410 V • For 400 V class drives: approximately 820 V (740 V when E1-01 is less than 400) • For 600 V class drives: approximately 1040 V	PROBLEM: 1) Surge voltage present in the drive input power. 2) a) The motor is short-circuited. b) Ground current has overcharged the main circuit capacitors via the drive input power. 3) Electrical signal interference causes the drive to operate incorrectly. 4) PG cable is disconnected 5) PG cable wiring is wrong. 6) Electrical signal interference along PG encoder wiring. SOLUTION: 1) • Install a DC link choke or an AC reactor. • Voltage surge can result from a thyristor convertor and a phase advancing capacitor operating on the same drive input power system. 2) • Check the motor power cable, relay terminals and motor terminal box for short circuits. • Correct grounding shorts and turn the power back on. 3) • Review possible solutions for handling electrical signal interference. • Review section on handling electrical signal interference and check control circuit lines, main circuit lines and ground wiring. • If the magnetic contactor is identified as a source of electrical signal interference, install a surge protector to the MC coil. Set number of fault restarts (L5-01) to a value other than 0. 4) Reconnect the cable. 5) Correct the wiring. 6) Separate PG wiring from the source of the interference (often output wiring from the drive).
ov	Overvoltage Voltage in the DC bus has exceeded the overvoltage detection level. • For 200 V class drives: approximately 410 V • For 400 V class drives: approximately 820 V (740 V when E1-01 is less than 400) • For 600 V class drives: approximately 1040 V	PROBLEM: 1) Deceleration time is too short and regenerative energy is flowing from the motor into the drive 2) Fast acceleration time causes the motor to overshoot the speed reference 3) Excessive braking load 4) Surge voltage entering from the drive input power 5) Ground fault in the output circuit causes the DC bus capacitor to overcharge 6) Improper parameters related to Speed Search (including Speed Search after a momentary power loss and after a fault restart) 7) Drive input power voltage is too high 8) The braking transistor or braking resistor are wired incorrectly 9) PG cable is disconnected 10) PG cable wiring is wrong 11) Electrical signal interference along the PG encoder wiring 12) Drive fails to operate properly due to electrical signal interference 13) Load inertia is set incorrectly 14) Braking function is being used in OLV/PM 15) Motor hunting occurs SOLUTION: 1) • Increase the deceleration time (C1-02, C1-04, C1-06, C1-08). • Install a dynamic braking resistor or a dynamic braking resistor unit. • Set L3-04 to 1 to enable stall prevention during deceleration. Stall Prevention is enabled as the default setting. 2) • Check if sudden drive acceleration triggers an overvoltage alarm. • Increase the acceleration time. • Use longer S-curve acceleration and deceleration times. • Enable the Overvoltage Suppression function (L3-11 = 1). • Lengthen the S-curve at acceleration end. 3) The braking torque was too high, causing regenerative energy to charge the DC bus. Reduce the braking torque, use a dynamic braking option, or lengthen decel time. 4) Install a DC link choke. Note: Voltage surge can result from a thyristor convertor and phase advancing capacitor using the same input power supply. 5) • Check the motor wiring for ground faults. • Correct grounding shorts and reapply power. 6) • Check the settings for Speed Search-related parameters. • Enable Speed Search restart function (b3-19 greater than or equal to 1, up to 10). • Adjust the current level during Speed Search and the deceleration time (b3-02 and b3-03 respectively). • Perform Stationary Auto-Tuning for line-to-line resistance and then set b3-14 to 1 to enable Speed Estimation Speed Search. 7) • Check the voltage. • Lower drive input power voltage within the limits listed in the specifications. 8) • Check braking transistor and braking resistor wiring for errors. • Properly rewire the braking resistor device. 9) Reconnect the cable 10) Correct the wiring 11) Separate the wiring from the source of the electrical signal interference. Often, the source is the output lines from the drive. 12) • Review the list of possible solutions provided for controlling electrical signal interference. • Review the section on handling electrical signal interference on page 454 and check the control circuit lines, main circuit lines, and ground wiring. 13) • Check the load inertia settings when using KEB, overvoltage suppression, or Stall Prevention during deceleration. • Adjust the load inertia ratio in L3-25 to better match the load. 14) Connect a braking resistor 15) • Adjust the parameters that control hunting. • Set the gain for Hunting Prevention (n1-02). • Adjust the AFR time constant (n2-02 and n2-03). • Adjust the speed feedback detection suppression gain for PM motors (n8-45) and the time constant for pull-in current (n8-47).
PASS	MEMOBUS/Modbus Comm. Test Mode Complete	PROBLEM: 1) MEMOBUS/Modbus test has finished normally. SOLUTION: 1) This verifies that the test was successful.
PF	Input Phase Loss Drive input power has an open phase or has a large imbalance of voltage between phases. Detected when L8-05 is set 1 (enabled).	PROBLEM: 1) There is phase loss in the drive input power 2) There is loose wiring in the drive input power terminals 3) There is excessive fluctuation in the drive input power voltage 4) There is poor balance between voltage phases 5) The main circuit capacitors are worn SOLUTION: 1) • Check for wiring errors in the main circuit drive input power. • Correct the wiring. 2) • Ensure the terminals are tightened properly. • Apply the tightening torque as specified in this manual. Refer to Main Circuit Wire Gauges and Tightening Torques on page 129 for details. 3) • Check the voltage from the drive input power. • Review the possible solutions for stabilizing the drive input power. 4) Stabilize drive input power or disable phase loss detection. 5) • Check the maintenance time for the capacitors (U4-05). • Replace the main capacitor(s) if U4-05 is greater than 90%. For instructions on replacing the capacitor(s), contact Yaskawa or a Yaskawa representative. Check for problems with the drive input power. If drive input power appears normal but the alarm continues to occur, replace either the control board or the entire drive. For instructions on replacing the control board, contact Yaskawa or a Yaskawa representative.
PGo	PG Disconnect (for any control modes using a PG option card) No PG pulses are received for longer than the time set to F1-14.	PROBLEM: 1) PG cable is disconnected 2) PG cable wiring is wrong 3) PG has no power 4) PG encoder brake is clamped shut SOLUTION: 1) Reconnect the cable. 2) Correct the wiring. 3) Check the power line to the PG encoder. 4) Ensure the motor brake releases properly.
PGo	PG Disconnect (for Control Mode with PG) Detected when no PG pulses are received for a time longer than setting in F1-14.	PROBLEM: 1) PG cable is disconnected. 2) PG cable wiring is wrong. 3) PG encoder does not have enough power. 4) Brake is holding the PG. SOLUTION: 1) Reconnect the cable. 2) Correct the wiring. 3) Make sure the correct power supply is properly connected to the PG encoder. 4) Ensure the brake releases properly
PGoH	PG Hardware Fault (detected when using a PG-X3 option card) PG cable has become disconnected.	PROBLEM: 1) PG cable is disconnected SOLUTION: 1) Reconnect the cable and check the setting of F1-20
PGoH	PG Hardware Fault (detected when using a PG-X3 option card) PG cable is not connected properly.	PROBLEM: 1) PG cable is disconnected SOLUTION: 1) Reconnect the cable and check the setting of F1-20.
rdEr	Error Reading Data	PROBLEM: 1) Failed while attempting to read parameter settings from the drive. SOLUTION: 1) Press and hold the READ key on the USB Copy Unit for at least one second to have the unit read parameters from the drive.
rEAd	Reading Parameter Settings (flashing)	PROBLEM: 1) Displayed while the parameter settings are being read onto the USB Copy Unit. SOLUTION: 1) This is not an error.
rF	Braking Resistor Fault The resistance of the braking resistor is too low.	PROBLEM: 1) The proper braking resistor option has not been installed 2) A regenerative converter, regenerative unit, or braking unit is being used and the ⊕1 or ⊕3 terminal is connected to ⊖ terminal SOLUTION: 1) Select a braking resistor option that it fits the drive braking transistor specification 2) Set L8-55 to 0 to disable the braking transistor protection selection
rH	Braking Resistor Overheat Braking resistor protection was triggered. Fault detection is enabled when L8-01 = 1 (disabled as a default).	PROBLEM: 1) Deceleration time is too short and excessive regenerative energy is flowing back into the drive 2) The duty cycle is too high 3) Excessive braking inertia 4) The braking operation duty cycle is too high 5) The proper braking resistor has not been installed SOLUTION: 1) • Check the load, deceleration time, and speed. • Reduce the load inertia. • Increase the deceleration times (C1-01 to C1-08). • Replace the dynamic braking option with a larger device that can handle the power that is discharged. 2) Check the duty cycle. Maximum of 3% duty cycle is available when L8-01 = 1. 3) Recalculate braking load and braking power. Reduce the braking load by adjusting braking resistor settings. 4) Check the braking operation duty cycle. Braking resistor protection for ERF-type braking resistors (L8-01 = 1) allows a braking duty cycle of maximum 3%. 5) • Check the specifications and conditions for the braking resistor device. • Select the optimal braking resistor.
rr	Dynamic Braking Transistor The built-in dynamic braking transistor failed.	PROBLEM: 1) The braking transistor is damaged The control circuit is damaged SOLUTION: 1) • Cycle power to the drive and check for reoccurrence of the fault. • Replace either the control board or the entire drive. For instructions on replacing the control board, contact Yaskawa or a Yaskawa representative.
rUn	Motor Switch during Run A command to switch motors was entered during run.	PROBLEM: 1) A motor switch command was entered during run SOLUTION: 1) Change the operation pattern so that the motor switch command is entered while the drive is stopped.
SC	Output Short Circuit or IGBT Fault Short circuit or ground fault is detected. Note: Fault reset will not be received to prevent a short-circuit of the internal circuitry caused by the IGBP fault	PROBLEM: 1) The drive is damaged 2) Motor has been damaged from overheat or the motor insulation has been weakened. 3) The cable is damaged and is coming into contact with something causing a short circuit. 4) Hardware fault. SOLUTION: 1) • Check the drive output side short circuit for a broken output transistor B1 and U/T1, V/T2, W/T3 – and U/T1, V/T2, W/T3 • Contact your Yaskawa representative or nearest Yaskawa sales office. 2) Check the motor insulation resistance and replace the motor if continuity is detected 3) Check the motor power cable and repair any short circuits 4) A short circuit or grounding fault on the drive output side has damaged the output transistors. Make sure drive output is not shorted as follows: B1←→U, V, W – ←→U, V, W The above short circuit will damage the output transistors. Contact your Yaskawa representative or sales offices for assistance
SE	MEMOBUS/Modbus Communication Test Mode Error Note: This alarm will not trigger a multi-function output terminal that is set for alarm output (H2-oo = 10).	PROBLEM: 1) A digital input set to 67H (MEMOBUS/ Modbus test) was closed while the drive was running. SOLUTION: 1) Stop the drive and run the test again.
SEr	Too Many Speed Search Restarts The number of Speed Search restarts exceeded the value set to b3-19.	PROBLEM: 1) Parameters related to Speed Search are set to the wrong values 2) The motor is coasting in the opposite direction of the Run command SOLUTION: 1) • Reduce the detection compensation gain during Speed Search (b3-10). • Increase the current level when attempting Speed Search (b3-17). • Increase the detection time during Speed Search (b3-18). • Repeat Auto-Tuning. 2) Set b3-14 to 1 to enable Bi-Directional Speed Search.
STo	Pull-Out Detection Motor pull out or step out has occurred. Motor has exceeded its pull-out torque.	PROBLEM: 1) The wrong motor code is set (Yaskawa motors only) 2) Load is too heavy 3) Load inertia is too heavy 4) Acceleration and deceleration times are too short 5) Speed response is too slow SOLUTION: 1) • Enter the correct motor code for the PM being used into E5-01. • For special-purpose motors, enter the correct data to all E5 parameters according to the test report provided for the motor. 2) • Increase the load inertia for PM motor (n8-55). • Increase the pull-in current during accel/decel (n8-51). • Reduce the load. • Use a larger motor and drive. 3) Increase the load inertia for PM motor (n8-55). 4) • Increase the acceleration and deceleration times (C1-01 through C1-08). • Increase the S-curve acceleration and deceleration times (C2-01). 5) Increase the load inertia for PM motor (n8-55).
SvE	Zero Servo Fault Position deviation during zero servo.	PROBLEM: 1) Torque limit is set too low 2) Excessive load torque 3) Electrical signal interference along PG encoder wiring SOLUTION: 1) Set the torque limit to an appropriate value using parameters L7-01 to L7-04. 2) Reduce the amount of load torque. 3) Check the PG signal for electrical signal interference.
THo	Thermistor Disconnect The thermistor used to detect motor temperature has become disconnected.	PROBLEM: 1) The motor thermistor is not connected properly. SOLUTION: 1) Check the thermistor wiring.
THo	Thermistor Disconnect The thermistor that detects motor temperature has become disconnected.	PROBLEM: 1) The motor thermistor is not connected properly. SOLUTION: 1) Check the thermistor wiring.
TrPC	IGBT Maintenance Time (90%) IGBTs have reached 90% of their expected performance life.	PROBLEM: 1) IGBTs have reached 90% of their expected performance life. SOLUTION: 1) Replace the drive.
UL3	Undertorque Detection 1 Drive output current (or torque in OLV, CLV, AOLV/PM, and CLV/PM) less than L6-02 for longer than L6-03 time.	PROBLEM: 1) Inappropriate parameter settings. 2) Load has dropped or decreased significantly. SOLUTION: 1) Check parameters L6-02 and L6-03. 2) Check for broken parts in the transmission system.
UL3	Undertorque Detection 1 The current has fallen below the minimum value set for Torque Detection Level 1 (L6-02) for longer than the allowable time (L6-03).	PROBLEM: 1) Parameter settings are not appropriate for the load. 2) There is a fault on the machine side SOLUTION: 1) Check the settings of parameters L6-02 and L6-03. 2) Check the load for any problems.
UL4	Undertorque Detection 2 Drive output current (or torque in OLV, CLV, AOLV/PM, and CLV/PM) less than L6-05 for longer than L6-06 time.	PROBLEM: 1) Inappropriate parameter settings 2) The load has dropped or decreased significantly. SOLUTION: 1) Check parameters L6-05 and L6-06. 2) Check for broken parts in the transmission system.
UL4	Undertorque Detection 2 The current has fallen below the minimum value set for Torque Detection Level 2 (L6-05) for longer than the allowable time (L6-06).	PROBLEM: 1) Parameter settings are not appropriate for the load. 2) There is a fault on the machine side SOLUTION: 1) Check L6-05 and L6-06 settings 2) Check the load for any problems.
UL5	Mechanical Weakening Detection 2 The operation conditions matched the conditions set to L6-08.	PROBLEM: 1) Undertorque was detected and matched the conditions for mechanical loss detection set to L6-08 SOLUTION: 1) Check the load side for any problems.
UnbC	Current Unbalance Current flow has become unbalanced.	PROBLEM: 1)The internal current sensor has detected a current unbalance situation. SOLUTION: 1) • Check wiring • Check for damaged transistors. • Check for short circuits or grounding problems on the connected motor.
Uv	Undervoltage One of the following conditions was true when the drive was stopped and a Run command was entered: • DC bus voltage dropped below the level specified in L2-05. • Contactor to suppress inrush current in the drive was opened. • Low voltage in the control drive input power. This alarm outputs only if L2-01 is not 0 and DC bus voltage is under L2-05.	PROBLEM: 1) Phase loss in the drive input power. 2) Loose wiring in the drive input power terminals. 3) There is a problem with the drive input power voltage. 4) Drive internal circuitry is worn. 5) The drive input power transformer is too small and voltage drops when the power is switched on. 6) Air inside the drive is too hot. 7) The CHARGE light is broken or disconnected . SOLUTION: 1) Check for wiring errors in the main circuit drive input power. Correct the wiring. 2) • Ensure the terminals have been properly tightened. • Apply the tightening torque to the terminals as specified. Refer to Main Circuit Wire Gauges and Tightening Torques on page 129. 3) • Check the voltage. • Lower the voltage of the drive input power so that it is within the limits listed in the specifications 4) • Check the maintenance time for the capacitors (U4-05). • Replace either the control board or the entire drive if U4-05 exceeds 90%. For instructions on replacing the control board, contact Yaskawa or your nearest sales representative. 5) • Check for an alarm when the magnetic contactor, line breaker, and leakage breaker are closed. • Check the capacity of the drive input power transformer. 6) Check the temperature inside the drive. 7) Replace either the control board or the entire drive. For instructions on replacing the control board, contact Yaskawa or your nearest sales representative.
Uv1	DC Bus Undervoltage One of the following conditions occurred while the drive was running: • Voltage in the DC bus fell below the undervoltage detection level (L2-05). • For 200 V class drives: approximately 190 V • For 400 V class drives: approximately 380 V (350 V when E1-01 is less than 400) • For 600 V class drives: approximately 475 V The fault is output only if L2-01 is set to 0 or 1 and the DC bus voltage has fallen below the level set to L2-05 for longer than the time set to L2-02.	PROBLEM: 1) Input power phase loss 2) One of the drive input power wiring terminals is loose 3) There is a problem with the voltage from the drive input power 4) The power has been interrupted 5) The main circuit capacitors are worn 6) The relay or contactor on the soft-charge bypass relay is damaged SOLUTION: 1) • The main circuit drive input power is wired incorrectly. • Correct the wiring. 2) • Ensure there are no loose terminals. • Apply the tightening torque specified in this manual to fasten the terminals. Refer to Main Circuit Wire Gauges and Tightening Torques on page 129 for details. 3) • Check the voltage. • Correct the voltage to be within the range listed in drive input power specifications. • If there is no problem with the power supply to the main circuit, check for problems with the main circuit magnetic contactor. 4) Correct the drive input power 5) • Check the maintenance time for the capacitors (U4-05). • Replace either the control board or the entire drive if U4-05 exceeds 90%. For instructions on replacing the control board, contact Yaskawa or a Yaskawa representative. 6) • Cycle power to the drive and see if the fault reoccurs. • Check monitor U4-06 for the performance life of the soft-charge bypass relay. • Replace either the control board or the entire drive if U4-06 exceeds 90%. For instructions on replacing the control board, contact Yaskawa or a Yaskawa representative.
Uv2	Control Power Supply Voltage Fault Voltage is too low for the control drive input power.	PROBLEM: 1) In drive models 2A0004 to 2A0056 or 4A0002 to 4A0031, L2-02 was changed from its default value without installing a Momentary Power Loss Ride-Thru unit 2) Control power supply wiring is damaged 3) Internal circuitry is damaged SOLUTION: 1) Correct the setting to L2-02 or install an optional Momentary Power Loss Ride-Thru unit. 2) • Cycle power to the drive. Check if the fault reoccurs. • If the problem continues, replace the control board, the entire drive, or the control power supply. For instructions on replacing the control board, contact Yaskawa or a Yaskawa representative. 3) • Cycle power to the drive. Check if the fault reoccurs. • If the problem continues, replace either the control board or the entire drive. For instructions on replacing the control board, contact Yaskawa or a Yaskawa representative.
Uv3	Undervoltage 3 (Soft-Charge Bypass Relay Fault) The soft-charge bypass relay failed	PROBLEM: 1) The relay or contactor on the soft-charge bypass relay is damaged SOLUTION: 1) • Cycle power to the drive and see if the fault reoccurs. • Check monitor U4-06 for the performance life of the soft-charge bypass relay. • Replace either the control board or the entire drive if U4-06 exceeds 90%. For instructions on replacing the control board, contact Yaskawa or a Yaskawa representative.
Uv4	Gate Drive Board Undervoltage Voltage drop in the gate drive board circuit	PROBLEM: 1) Not enough power is being supplied to the gate drive board. SOLUTION: 1) • Cycle power to the drive and see if the fault reoccurs. Refer to Diagnosing and Resetting Faults on page 447 for details. • If the problem continues, replace either the gate drive board or the entire drive. For instructions on replacing the gate drive board, contact Yaskawa or a Yaskawa representative.
vAEr	Voltage Class, Capacity Mismatch	PROBLEM: 1) The drive from which the parameters were copied and the drive on which the Verify mode is being performed have different electrical specifications or are a different capacity. SOLUTION: 1) Make sure electrical specifications and capacities are the same for both drives.
vFyE	Parameter settings in the drive and those saved to the copy function are not the same	PROBLEM: 1) Indicates that parameter settings that have been Read and loaded onto the Copy Unit or Digital Operator are different. SOLUTION: 1) To synchronize parameters, either write the parameters saved on the USB Copy Unit or digital operator onto the drive, or Read the parameter settings on the drive onto the USB Copy Unit.
voF	Output Voltage Detection Fault Problem detected with the voltage on the output side of the drive.	PROBLEM: 1) Hardware is damaged. Internal drive module MC / FAN overheat protection circuit board is due to abnormal ambient operating power. SOLUTION: 1) • Lower ambient temperature. • Replace the control board or the entire drive. For instructions on replacing the control board, contact Yaskawa or a Yaskawa representative.
voF	Output Voltage Detection Fault There is a problem with the output voltage.	PROBLEM: 1) Hardware is damaged. SOLUTION: 1) Replace either the control board or the entire drive. For instructions on replacing the control board, contact Yaskawa or your nearest sales representative.
vrFy	Comparing Parameter Settings (flashing)	PROBLEM: 1) The Verify mode has confirmed that parameters settings on the drive and parameters read to the copy device are identical. SOLUTION: 1) This is not an error.

Models

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CIMR-AU-4A0011FAA

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CIMR-AU-4A0011FAA Yaskawa Electric AC VFD Variable Frequency Drive Repair

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