SKU: 29698

ACS550-PC-045A-4 ABB Asea Brown Boveri 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 ABB Asea Brown Boveri.

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.
  • FREE USA Round Trip Shipping
  • 2 Year Warranty
  • Our service is 100% guaranteed or your money back. Order today and save!

International Shipping Available:
Ships to USA and Canada

Free round trip shipping available at online checkout!
$1,852.52
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Description

This is a repair service for ACS550-PC-045A-4 ABB Asea Brown Boveri AC VFD Variable Frequency Drive Repair.
UpFix is NOT an authorized distributor for ABB Asea Brown Boveri.

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 do not replace housing or cases

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.



Don't send your part for repair if
Need case or housing replaced


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

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.


  1. Carefully remove your part.
  2. Securely pack your part, using the correct box so that your part cannot be damaged in transit. Take special care when packing.
  3. 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.
  4. Inside the package include: Your Name, Return Address, Phone Number.


  5. International Shipping Available
    We ship to USA and Canada
Part Numbers

ACS550PC045A4

Error Codes
CodeDescriptionRecommended Action
-UNKNOWN DRIVE TYPE: ACS550 SUPPORTED DRIVES: XWrong type of panel, i.e. panel that supports drive X but not the ACS550, has been connected to the ACS550.
1OVERCURRENTOutput current is excessive. Check for and correct: • Excessive motor load. • Insufficient acceleration time (parameters 2202 ACCELER TIME 1 and 2205 ACCELER TIME 2). • Faulty motor, motor cables or connections.
10PANEL LOSS Panel communication is lost and either: • Drive is in local control mode (the control panel displays LOC), or • Drive is in remote control mode (REM) and is parameterized to accept start/stop, direction or reference from the control panel. To correct check: • Communication lines and connections. • Parameter 3002 PANEL COMM ERR. • Parameters in Group 10: START/STOP/DIR and Group 11: REFERENCE SELECT (if drive operation is REM).
1000PAR HZRPMParameter values are inconsistent. Check for any of the following: • 2001 MINIMUM SPEED > 2002 MAXIMUM SPEED. • 2007 MINIMUM FREQ > 2008 MAXIMUM FREQ. • 2001 MINIMUM SPEED / 9908 MOTOR NOM SPEED is outside proper range (> 50). • 2002 MAXIMUM SPEED / 9908 MOTOR NOM SPEED is outside proper range (> 50). • 2007 MINIMUM FREQ / 9907 MOTOR NOM FREQ is outside proper range (> 50). • 2008 MAXIMUM FREQ / 9907 MOTOR NOM FREQ is outside proper range (> 50).
1001PAR PFC REF NEGParameter values are inconsistent. Check for the following: • 2007 MINIMUM FREQ is negative, when 8123 PFC ENABLE is active.
1002RESERVEDNot used.
1003PAR AI SCALEParameter values are inconsistent. Check for any of the following: • 1301 MINIMUM AI1 > 1302 MAXIMUM AI1. • 1304 MINIMUM AI2 > 1305 MAXIMUM AI2.
1004PAR AO SCALEParameter values are inconsistent. Check for any of the following: • 1504 MINIMUM AO1 > 1505 MAXIMUM AO1. • 1510 MINIMUM AO2 > 1511 MAXIMUM AO2.
1005PAR PCU 2Parameter values for power control are inconsistent: Improper motor nominal kVA or motor nominal power. Check for the following: • 1.1 < (9906 MOTOR NOM CURR · 9905 MOTOR NOM VOLT · 1.73 / PN) < 3.0 where: PN = 1000 · 9909 MOTOR NOM POWER (if units are kW) or PN = 746 · 9909 MOTOR NOM POWER (if units are hp, e.g. in US)
1006PAR EXT ROParameter values are inconsistent. Check for the following: • Extension relay module not connected and • 1410…1412 RELAY OUTPUTS 4…6 have non-zero values.
1007PAR FIELDBUS MISSINGParameter values are inconsistent. Check for and correct: • A parameter is set for fieldbus control (e.g. 1001 EXT1 COMMANDS = 10 (COMM)), but 9802 COMM PROT SEL = 0.
1008PAR PFC MODEParameter values are inconsistent – 9904 MOTOR CTRL MODE must be = 3 (SCALAR:FREQ), when 8123 PFC ENABLE is activated.
1009PAR PCU 1Parameter values for power control are inconsistent: Improper motor nominal frequency or speed. Check for both of the following: • 1 < (60 · 9907 MOTOR NOM FREQ / 9908 MOTOR NOM SPEED < 16 • 0.8 < 9908 MOTOR NOM SPEED / (120 · 9907 MOTOR NOM FREQ / Motor Poles) < 0.992
101… 199SYSTEM ERRORError internal to the drive. Contact your local ABB representative and report the error number.
1010/ 1011RESERVEDNot used.
1012PAR PFC IO 1IO configuration is not complete – not enough relays are parameterized to PFC. Or, a conflict exists between Group 14: RELAY OUTPUTS, parameter 8117 NR OF AUX MOT and parameter 8118 AUTOCHNG INTERV.
1013PAR PFC IO 2 IO configuration is not complete – the actual number of PFC motors (parameter 8127, MOTORS) does not match the PFC motors in Group 14: RELAY OUTPUTS and parameter 8118 AUTOCHNG INTERV.
1014PAR PFC IO 3IO configuration is not complete – the drive is unable to allocate a digital input (interlock) for each PFC motor (parameters 8120 INTERLOCKS and 8127 MOTORS).
1015RESERVEDNot used.
1016PAR USER LOAD CParameter values for the user load curve are inconsistent. Check that the following conditions are met: • 3704 LOAD FREQ 1 < 3707 LOAD FREQ 2 < 3710 LOAD FREQ 3 < 3713 LOAD FREQ 4 < 3716 LOAD FREQ 5. • 3705 LOAD TORQ LOW 1 < 3706 LOAD TORQ HIGH 1. • 3708 LOAD TORQ LOW 2 < 3709 LOAD TORQ HIGH 2. • 3711 LOAD TORQ LOW 3 < 3712 LOAD TORQ HIGH 3. • 3714 LOAD TORQ LOW 4 < 3715 LOAD TORQ HIGH 4. • 3717 LOAD TORQ LOW 5 < 3718 LOAD TORQ HIGH 5.
11ID RUN FAILThe Motor ID Run was not completed successfully. Check for and correct: • Motor connections. • Motor parameters 9905…9909.
12MOTOR STALLMotor or process stall. Motor is operating in the stall region. Check for and correct: • Excessive load. • Insufficient motor power. • Parameters 3010…3012.
13RESERVEDNot used.
14EXT FAULT 1Digital input defined to report first external fault is active. See parameter 3003 EXTERNAL FAULT 1.
15EXT FAULT 2Digital input defined to report second external fault is active. See parameter 3004 EXTERNAL FAULT 2.
16EARTH FAULTPossible ground fault detected in the motor or motor cables. The drive monitors for ground faults while the drive is running and while the drive is not running. Detection is more sensitive when the drive is not running and can produce false positives. Possible corrections: • Check for/correct faults in the input wiring. • Verify that motor cable does not exceed maximum specified length. • Decrease the detection level for earth fault with parameter 3028 EARTH FAULT LVL. • A delta grounded input power supply and motor cables with high capacitance may result in erroneous error reports during non-running tests. To disable response to fault monitoring when the drive is not running, use parameter 3023 WIRING FAULT. To disable response to all ground fault monitoring, use parameter 3017 EARTH FAULT. Note: Disabling earth fault (ground fault) may void the warranty.
17OBSOLETENot used.
18THERM FAILInternal fault. The thermistor measuring the internal temperature of the drive is open or shorted. Contact your local ABB representative.
19OPEX LINKInternal fault. A communication-related problem has been detected on the fiber optic link between the control and OINT boards. Contact your local ABB representative.
2DC OVERVOLTIntermediate circuit DC voltage is excessive. Check for and correct: • Static or transient overvoltages in the input power supply. • Insufficient deceleration time (parameters 2203 DECELER TIME 1 and 2206 DECELER TIME 2). • Undersized brake chopper (if present). • Verify that overvoltage controller is ON (using parameter 2005).
20OPEX PWRInternal fault. Exceptionally low voltage detected on the OINT power supply. Contact your local ABB representative.
2001OVERCURRENTCurrent limiting controller is active. Check for and correct: • Excessive motor load. • Insufficient acceleration time (parameters 2202 ACCELER TIME 1 and 2205 ACCELER TIME 2). • Faulty motor, motor cables or connections.
2002OVERVOLTAGEOvervoltage controller is active. Check for and correct: • Static or transient overvoltages in the input power supply. • Insufficient deceleration time (parameters 2203 DECELER TIME 1 and 2206 DECELER TIME 2).
2003UNDERVOLTAGEUndervoltage controller is active. Check for and correct: • Undervoltage on mains.
2004DIR LOCKThe change in direction being attempted is not allowed. Either: • Do not attempt to change the direction of motor rotation, or • Change parameter 1003 DIRECTION to allow direction change (if reverse operation is safe).
2005IO COMMFieldbus communication has timed out. Check for and correct: • Fault setup (3018 COMM FAULT FUNC and 3019 COMM FAULT TIME). • Communication settings (Group 51: EXT COMM MODULE or Group 53: EFB PROTOCOL as appropriate). • Poor connections and/or noise on line.
2006AI1 LOSSAnalog input 1 is lost, or value is less than the minimum setting. Check: • Input source and connections. • Parameter that sets the minimum (3021). • Parameter that sets the alarm/fault operation (3001),
2007AI2 LOSSAnalog input 2 is lost, or value is less than the minimum setting. Check: • Input source and connections. • Parameter that sets the minimum (3022). • Parameter that sets the alarm/fault operation (3001).
2008PANEL LOSSPanel communication is lost and either: • Drive is in local control mode (the control panel displays LOC), or • Drive is in remote control mode (REM) and is parameterized to accept start/stop, direction or reference from the control panel. To correct check: • Communication lines and connections. • Parameter 3002 PANEL COMM ERR. • Parameters in Group 10: START/STOP/DIR and Group 11: REFERENCE SELECT (if drive operation is REM).
2009DEVICE OVERTEMPDrive heatsink is hot. This alarm warns that a DEVICE OVERTEMP fault may be near. R1…R4: 100 °C (212 °F) R5, R6: 110 °C (230 °F) Check for and correct: • Fan failure. • Obstructions in the air flow. • Dirt or dust coating on the heat sink. • Excessive ambient temperature. • Excessive motor load.
201… 299SYSTEM ERRORError in the system. Contact your local ABB representative and report the error number.
2010MOTOR TEMPMotor is hot, based on either the drive’s estimate or on temperature feedback. This alarm warns that a MOT OVERTEMP fault trip may be near. Check: • Check for overloaded motor. • Adjust the parameters used for the estimate (3005…3009). • Check the temperature sensors and Group 35: MOTOR TEMP MEAS.
2011RESERVEDNot used
2012MOTOR STALLMotor is operating in the stall region. This alarm warns that a MOTOR STALL fault trip may be near.
2013AUTORESETThis alarm warns that the drive is about to perform an automatic fault reset, which may start the motor. • To control automatic reset, use Group 31: AUTOMATIC RESET.
2014AUTOCHANGEThis alarm warns that the PFC autochange function is active. • To control PFC, use Group 81: PFC CONTROL and the PFC macro on page 84.
2015PFC I LOCKThis alarm warns that the PFC interlocks are active, which means that the drive cannot start the following: • Any motor (when Autochange is used). • The speed regulated motor (when Autochange is not used).
2016/ 2017RESERVEDNot used.
2018PID SLEEPThis alarm warns that the PID sleep function is active, which means that the motor could accelerate when the PID sleep function ends. • To control PID sleep, use parameters 4022…4026 or 4122…4126.
2019ID RUNPerforming ID Run.
2020RESERVEDNot used.
2021START ENABLE 1 MISSINGThis alarm warns that the Start Enable 1 signal is missing. • To control Start Enable 1 function, use parameter 1608. To correct, check: • Digital input configuration. • Communication settings.
2022START ENABLE 2 MISSINGThis alarm warns that the Start Enable 2 signal is missing. • To control Start Enable 2 function, use parameter 1609. To correct, check: • Digital input configuration. • Communication settings.
2023EMERGENCY STOPEmergency stop activated.
2024ENCODER ERRORThe drive is not detecting a valid encoder signal. Check for and correct: • Encoder presence and proper connection (reverse wired, loose connection or short circuit). • Voltage logic levels are outside of the specified range. • A working and properly connected Pulse Encoder Interface Module, OTAC-01. • Wrong value entered in parameter 5001 PULSE NR. A wrong value will only be detected if the error is such that the calculated slip is greater than 4 times the rated slip of the motor. • Encoder is not being used, but parameter 5002 ENCODER ENABLE = 1 (ENABLE).
2025FIRST STARTSignals that a the drive is performing a First Start evaluation of motor characteristics. This is normal the first time the motor is run after motor parameters are entered or changed. See parameter 9910 ID RUN for a description of motor models.
2026RESERVEDNot used.
2027USER LOAD CURVEThis alarm warns that the condition defined by parameter 3701 USER LOAD C MODE has been valid longer than half of the time defined by 3703 USER LOAD C TIME.
2028START DELAYShown during the Start delay. See parameter 2113 START DELAY
21CURR MEASInternal fault. Current measurement is out of range. Contact your local ABB representative.
22SUPPLY PHASERipple voltage in the DC link is too high. Check for and correct: • Missing mains phase. • Blown fuse.
23ENCODER ERRThe drive is not detecting a valid encoder signal. Check for and correct: • Encoder presence and proper connection (reverse wired = channel A connected to terminal of channel B or vice versa, loose connection or short circuit). • Voltage logic levels are outside of the specified range. • A working and properly connected Pulse Encoder Interface Module, OTAC-01. • Wrong value entered in parameter 5001 PULSE NR. A wrong value will only be detected if the error is such that the calculated slip is greater than 4 times the rated slip of the motor. • Encoder is not being used, but parameter 5002 ENCODER ENABLE = 1 (ENABLE).
24OVERSPEEDMotor speed is greater than 120% of the larger (in magnitude) of 2001 MINIMUM SPEED or 2002 MAXIMUM SPEED. Check for and correct: • Parameter settings for 2001 and 2002. • Adequacy of motor braking torque. • Applicability of torque control. • Brake chopper and resistor.
25RESERVEDNot used.
26DRIVE IDInternal fault. Configuration Block Drive ID is not valid. Contact your local ABB representative.
27CONFIG FILEInternal configuration file has an error. Contact your local ABB representative.
28SERIAL 1 ERRFieldbus communication has timed out. Check for and correct: • Fault setup (3018 COMM FAULT FUNC and 3019 COMM FAULT TIME). • Communication settings (Group 51: EXT COMM MODULE or Group 53: EFB PROTOCOL as appropriate). • Poor connections and/or noise on line.
29EFB CON FILEError in reading the configuration file for the embedded fieldbus.
3DEV OVERTEMPDrive heatsink is overheated. Temperature is at or above limit. R1…R4: 115 °C (239 °F) R5, R6: 125 °C (257 °F) Check for and correct: • Fan failure. • Obstructions in the air flow. • Dirt or dust coating on the heat sink. • Excessive ambient temperature. • Excessive motor load.
30FORCE TRIPFault trip forced by the fieldbus. See the fieldbus User’s Manual.
31EFB 1Fault code reserved for the embedded fieldbus (EFB) protocol application. The meaning is protocol dependent.
32EFB 2Fault code reserved for the embedded fieldbus (EFB) protocol application. The meaning is protocol dependent.
33EFB 3Fault code reserved for the embedded fieldbus (EFB) protocol application. The meaning is protocol dependent.
34MOTOR PHASEFault in the motor circuit. One of the motor phases is lost. Check for and correct: • Motor fault. • Motor cable fault. • Thermal relay fault (if used). • Internal fault.
35OUTP WIRINGIncorrect input power and motor cable connection (i.e., input power cable is connected to drive motor connection). The fault can be erroneously declared if the drive is faulty or the input power is a delta grounded system and the motor cable capacitance is large. This fault can be disabled by using parameter 3023 WIRING FAULT. • Check input power connections. Check grounding.
36INCOMPATIBLE SWThe drive cannot use the software. • Internal fault. • The loaded software is not compatible with the drive. • Call support representative.
37CB OVERTEMPDrive control board is overheated. The fault trip limit is 88 °C. Check for and correct: • Excessive ambient temperature. • Fan failure. • Obstructions in the air flow. Not for drives with an OMIO control board.
38USER LOAD CURVECondition defined by parameter 3701 USER LOAD C MODE has been valid longer than the time defined by 3703 USER LOAD C TIME.
4SHORT CIRCFault current. Check for and correct: • A short-circuit in the motor cable(s) or motor. • Supply disturbances.
5RESERVEDNot used.
5001Drive is not responding.
5002The communication profile is incompatible with the drive.
5010The panel’s parameter backup file is corrupted.
5011Drive is controlled from another source.
5012Rotation direction is locked.
5013Button is disabled, because start is inhibited.
5014Button is disabled, because drive is faulted.
5015Button is disabled, because local mode lock is on.
5018Parameter default value can’t be found.
5019Writing a non-zero value is prohibited (can only write a zero value).
5020Group or parameter does not exist or parameter value is inconsistent.
5021Group or parameter is hidden.
5022Group or parameter is write protected.
5023Modification is not allowed while the drive is running.
5024Drive is busy, try again
5025Write is not allowed while upload or download is in progress.
5026Value is at or below low limit.
5027Value is at or above high limit.
5028Value is invalid – doesn't match any values in the discrete values list
5029Memory is not ready, try again
5030Request is invalid
5031Drive is not ready, e.g due to low DC voltage.
5032Parameter error was detected
5040Selected parameter set can’t be found in the current parameter backup.
5041Parameter backup doesn't fit into memory.
5042Selected parameter set can’t be found in the current parameter backup.
5043No start inhibit was granted
5044Parameter backup versions do not match.
5050Parameter upload was aborted.
5051File error was detected
5052Parameter upload attempt has failed.
5060Parameter download was aborted.
5062Parameter download attempt has failed
5070Panel backup memory write error was detected.
5071Panel backup memory read error was detected.
5080Operation is not allowed, because the drive is not in local mode
5081Operation is not allowed, because a fault is active
5083Operation is not allowed, because parameter lock is not open
5084Operation is not allowed, because drive is busy, try again
5085Download is not allowed, because drive types are incompatible.
5086Download is not allowed, because drive models are incompatible.
5087Download is not allowed, because parameter sets do not match.
5088Operation failed, because a drive memory error was detected.
5089Download failed, because a CRC error was detected.
5090Download failed, because a data processing error was detected.
5091Operation failed, because a parameter error was detected.
5092Download failed, because parameter sets do not match
6DC UNDERVOLTIntermediate circuit DC voltage is not sufficient. Check for and correct: • Missing phase in the input power supply. • Blown fuse. • Undervoltage on mains.
7AI1 LOSSAnalog input 1 loss. Analog input value is less than AI1 FAULT LIMIT (3021). Check for and correct: • Source and connection for analog input. • Parameter settings for AI1 FAULT LIMIT (3021) and 3001 AI
8AI2 LOSSAnalog input 2 loss. Analog input value is less than AI2 FAULT LIMIT (3022). Check for and correct: • Source and connection for analog input. • Parameter settings for AI2 FAULT LIMIT (3022) and 3001 AI
9MOT OVERTEMPMotor is too hot, based on either the drive’s estimate or on temperature feedback. • Check for overloaded motor. • Adjust the parameters used for the estimate (3005…3009). • Check the temperature sensors and Group 35: MOTOR TEMP MEAS parameters.
Alarm codeDisplayDescription
Models

This control board may be found in models similar to the following:

ABB, ACS550-PC-045A-4

 
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ACS550-PC-045A-4 ABB Asea Brown Boveri AC VFD Variable Frequency Drive Repair
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