Siemens alarm F30837: Power unit DRIVE-CLiQ: Component fault
SINAMICS S120 drive fault · SINAMICS S120
What it means
The addressed DRIVE-CLiQ component reported an internal communication fault such as a telegram header error (20h) or telegram buffer memory errors on receive/send (23h, 42h, 43h). Faulty hardware cannot be excluded here - unlike pure line disturbances the defect sits in the component's own logic or its immediate connection.
Likely causes
- internal buffer/hardware fault of the DRIVE-CLiQ component
- telegram header corruption from marginal signaling
- contact problems in the specific socket used
Triage note: Try another DRIVE-CLiQ socket (p9904) before replacing the module.
Replacement parts
We supply the following units for this alarm — tested, warranty-backed:
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6SL3121-… Motor Module / affected DCL component
motor-module · Common cause
Need the part urgently?
Send us alarm F30837 with your machine details — typical RFQ turnaround is 24–48h.