Siemens alarm F30801: Power unit DRIVE-CLiQ: Sign-of-life missing
SINAMICS S120 drive fault · SINAMICS S120
What it means
A DRIVE-CLiQ communication error occurred from the Control Unit to the power unit: the sign-of-life bit in the receive telegram was not set (fault cause 10 = 0Ah). The message value encodes component number and error cause as 0000yyxx hex. Commonly caused by marginal cabling/EMC or excessive computing-time load; the component named in yy is the one to inspect first.
Likely causes
- damaged, kinked or unseated DRIVE-CLiQ cable
- EMC-deficient cabinet layout or missing shield connection
- computing time load too high (too many components/functions)
- defective DRIVE-CLiQ transceiver in the power unit
Triage note: Reduce load: remove unused DCL components/functions or increase sampling times (p0112, p0115).
Replacement parts
We supply the following units for this alarm — tested, warranty-backed:
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6FX2003-… DRIVE-CLiQ cable
cable · Common cause
Need the part urgently?
Send us alarm F30801 with your machine details — typical RFQ turnaround is 24–48h.