Fagor alarm 3736: The axis has moved while the CNC was off
CNC 8060/8065/8070 servo/feedback error · Fagor 8060/8065/8070
What it means
Drive-stored absolute coordinate disagrees with the value saved in the last CNC session.
Likely causes
- axis genuinely drifted (thermal, counterweight sag, brake creep) - benign if small
- absolute scale lost counts while unpowered (head power glitch)
- multi-turn encoder battery dead allowing revolution-count loss
- scale tape slipped on its mounting
Triage note: Verify actual position mechanically (dial/indicator) before trusting either value. Recurring overnight drift with stable temperature = replace the feedback, not the CNC.
Replacement parts
We supply the following units for this alarm — tested, warranty-backed:
- Request a quote →
LA-840
Absolute linear scale (if drift repeats) · Common cause
- Request a quote →
Encoder backup batteries (drive OEM spec)
Multi-turn encoder batteries · Primary suspect
Need the part urgently?
Send us alarm 3736 with your machine details — typical RFQ turnaround is 24–48h.