Unidrive SP repair and refurbishment.
Component-level repair for Control Techniques Unidrive SP drives. Contact us with your frame size and we will confirm scope.
Unidrive SP repair and refurbishment
The Unidrive SP is a high-performance drive with a wide power range used in heavy process applications. Its closed-loop vector and servo capability means encoder feedback card integrity is as important as the power stage.
Common Unidrive SP faults we fix
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Power module (IGBT) failure — particularly in frame sizes 3 to 6, where high switching frequencies accelerate thermal stress on the power semiconductors
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Encoder feedback option card faults causing closed-loop instability, speed oscillation, or drive inhibit faults
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Current clamp and current feedback circuit faults leading to spurious overcurrent trips under light load
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Cooling fan failure on larger frames causing thermal derating or emergency shutdown in warm environments
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
Unidrive SP repair FAQs
Do you repair large-frame Unidrive SP units?
Yes. We service a range of Unidrive SP frame sizes — contact us with your specific frame and we will confirm whether it is within our current scope.
Can you repair or replace the encoder feedback option card on a Unidrive SP?
Yes. Encoder feedback card failure is a common fault on closed-loop Unidrive SP applications. We can repair the fault or source a compatible replacement, verifying closed-loop operation before return.
My Unidrive SP shows an overtemperature fault — is this repairable?
Overtemperature faults are often caused by fan failure, blocked heatsink fins, or a faulty thermistor rather than primary power stage damage. We diagnose the root cause during the bench evaluation.