Fagor alarm 4109: ERROR 705: Power board identification error
CNC 8055 SERCOS drive error (DDS) · Fagor DDS drives
What it means
The identification of the power board inside the drive could not be read or does not match expectations. PWM is cut (category 0 stop) and, being non-resettable, recovery requires a power cycle after resolving the hardware mismatch - typically board or drive replacement.
Likely causes
- Power board swapped/incompatible revision
- ID memory corruption on the power board
- Connector/seating fault between power and control boards
Replacement parts
We supply the following units for this alarm — tested, warranty-backed:
- Request a quote →
DDS / AXD / SPD power board
drive · Common cause
- Request a quote →
DDS / AXD / SPD drive
drive · Common cause
Need the part urgently?
Send us alarm 4109 with your machine details — typical RFQ turnaround is 24–48h.