Siemens SINAMICS G120C repair and refurbishment.
Component-level repair for the SINAMICS G120C. Bench diagnostics, engineer-led, safety functions verified before return.
SINAMICS G120C repair and refurbishment
The SINAMICS G120C is Siemens' compact integrated drive, combining the control unit and power module in a single housing. Its integrated safety functions (STO, SS1) make it popular in machinery safety applications — but those same functions add complexity to fault diagnosis.
Common SINAMICS G120C faults we fix
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Control unit (CU230P or CU240E) failure causing communication losses, parameter faults, or drive inhibit conditions
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Power module (PM240-2) failure in the inverter stage, presenting as overcurrent or short-circuit fault codes
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Control circuit faults triggering an internal stop without an external signal — often caused by internal circuit degradation
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Parameterisation and firmware faults following a failed software update or NVRAM corruption
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
SINAMICS G120C repair FAQs
My G120C has stopped without an external signal applied — is this a drive fault?
Yes, this can be caused by an internal circuit failure mode on the G120C. We carry out a bench diagnostic to confirm whether the fault is in the control unit or the wiring before advising on repair.