Fanuc alarm STATUS1:51
βi SVPM · Fanuc αi/βi SVPM
What it means
DC link voltage has dropped in the main circuit (converter section of SVPM).
Likely causes
- Incoming power dip / low voltage
- MCC dropped while estop released
- Loose DC link/bus connections inside unit
Triage note: Check supply first; mirrors PSM alarm 04 behavior on αi systems.
Replacement parts
We supply the following units for this alarm — tested, warranty-backed:
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A06B-6134-Hxxx
βi SVPM Combined Servo & Spindle Amplifier · Check if others ruled out
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DC link bus bar set
DC Link Bus Bar · Common cause
Need the part urgently?
Send us alarm STATUS1:51 with your machine details — typical RFQ turnaround is 24–48h.