Fanuc alarm SV0433
βi SVU/SVM · Fanuc βi SVU/SVM
What it means
Converter: DC link undervoltage.
Likely causes
- Low incoming supply voltage / sag
- Circuit breaker trip or weak MCC
- Failed charge circuit in SVU
Triage note: Check supply and breaker first. αi equivalent is PSM 04 / SVM 5.
Replacement parts
We supply the following units for this alarm — tested, warranty-backed:
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A06B-6132-H2xx
βi Servo Amplifier Unit SVU I/O Link (A06B-6132 series) · Common cause
Need the part urgently?
Send us alarm SV0433 with your machine details — typical RFQ turnaround is 24–48h.