Fagor alarm 4008: Sercos ring Error+ because the drive has been reset
CNC 8060/8065/8070 SERCOS error · Fagor 8060/8065/8070
What it means
A drive on the ring executed a reset (front-key reset, WinDDS soft reset or a hardware-induced restart), which the CNC reports as a ring Error+ event. Isolated occurrences are informational; repetition points at unstable drive hardware or power.
Likely causes
- operator pressed the drive reset key or issued a WinDDS soft reset
- drive power dip or 24 V supply instability forcing reboot
- failing drive electronics resetting spontaneously
Replacement parts
We supply the following units for this alarm — tested, warranty-backed:
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PS / XPS / RPS power supply
drive · Common cause
Need the part urgently?
Send us alarm 4008 with your machine details — typical RFQ turnaround is 24–48h.