Fanuc alarm 11
αi SPM · Fanuc αi SPM
What it means
DC link overvoltage reported on SPM; actual source normally the PSM/converter.
Likely causes
- PSM alarm 07 condition mirrored (excessive regen / undersized PSM)
- High AC source impedance
- Sequence switching DC link off under load
Triage note: Combo alarm rule: SPM 11 with PSM 7 = troubleshoot the POWER SUPPLY, not the spindle amp. CNC: SP0011 / 9011.
Replacement parts
We supply the following units for this alarm — tested, warranty-backed:
- Request a quote →
A06B-6110/6120-Hxx
αiPS Power Supply Module (capacity review) · Common cause
- Request a quote →
A06B-6087-H145
Power Supply Module αi PSM · Check if others ruled out
Need the part urgently?
Send us alarm 11 with your machine details — typical RFQ turnaround is 24–48h.