Fagor alarm 4061: ERROR 105: Internal -18 V out of range
CNC 8055 SERCOS drive error (DDS) · Fagor DDS drives
What it means
The -18 V internal rail is out of tolerance. Power must be removed from the servo system and reapplied after fixing the cause; meanwhile the CNC keeps everything stopped with the external emergency output on.
Likely causes
- Gate-driver supply defect
- Internal supply aging/overload
- Board-level short on the -18 V distribution
Replacement parts
We supply the following units for this alarm — tested, warranty-backed:
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DDS / AXD / SPD drive
drive · Common cause
Need the part urgently?
Send us alarm 4061 with your machine details — typical RFQ turnaround is 24–48h.