Fanuc alarm 2
αi SVM · Fanuc αi SVM
What it means
Inverter: control power supply undervoltage.
Likely causes
- Three-phase input below 85% of rated voltage
- +24V control feed from PSM below 22.8V
- CXA2A/CXA2B connector or cable defective
- SVM control-power SMPS failure
Triage note: Companion CNC alarm SV0434/SV0432. Measure PSM 24V output before replacing the SVM.
Replacement parts
We supply the following units for this alarm — tested, warranty-backed:
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A06B-6114-K220
CXA2 6-pin control-power connector (catalog item) · Common cause
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A06B-6117-H2xx
Servo Amplifier Module αiSVM (rating-dependent) · Common cause
Need the part urgently?
Send us alarm 2 with your machine details — typical RFQ turnaround is 24–48h.