Fagor alarm 4005: Following error monitoring not active at the drive
CNC 8060/8065/8070 SERCOS error · Fagor 8060/8065/8070
What it means
Fagor safety rules require following-error monitoring both in the CNC and in the drive; drive parameter PP159 disables/enables it and was found inactive. The CNC refuses normal operation so the axis can never run without lag supervision.
Likely causes
- PP159 set to 0 (monitoring off) in the drive
- drive parameters restored from a non-compliant backup
- parameter write to the drive failed during validation
Need the part urgently?
Send us alarm 4005 with your machine details — typical RFQ turnaround is 24–48h.