ABB ACS550 repair and refurbishment.
Component-level diagnostics and repair for the ABB ACS550. Bench tested before return. No fix no fee, 2-year warranty.
ACS550 repair and refurbishment
The ABB ACS550 is one of the most widely installed variable speed drives in UK industrial and commercial settings, covering 0.75 kW to 355 kW across four frame sizes. Its longevity in the field means many units are now reaching component wear-out thresholds — particularly in the DC bus and power stage.
Common ACS550 faults we fix
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IGBT power module failure in the three-phase inverter bridge — a common failure mode after sustained operation or following a supply transient
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DC bus electrolytic capacitor degradation causing undervoltage trips and reduced braking capability, typically after extended use
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Control board faults including ASIC failure and RINT interface card issues affecting fieldbus and I/O operation
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Cooling fan failure leading to thermal derating or emergency shutdown, particularly in compact panel installations
How it works
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1
Send details
Share the drive model, fault symptoms, and any photos or error codes.
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2
Diagnostics
Bench diagnostics isolate the fault and scope the repair.
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3
Repair, Refurbish & Test
Component-level repair and thorough refurbishment with outcomes tested before return.
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4
Return to service
Confirmed results and return logistics for your drive.
Why Electron Lab
- Engineer-led bench diagnostics
- Component-level repair and rework
- Tested Before Return
- Clear, fast quoting
ACS550 repair FAQs
My ACS550 shows fault F0022 (output earth fault) — is this the IGBT?
F0022 can indicate an IGBT fault, but it can also be caused by a wiring fault or motor insulation breakdown. We carry out a bench diagnostic to confirm whether the fault lies in the drive before quoting a repair.
Can you carry out a preventative refurbishment on an ACS550 before it fails?
Yes. A preventative refurbishment covering DC bus capacitors, cooling fans, and power stage inspection is a cost-effective way to extend drive life — particularly for production-critical applications.