Fanuc alarm SP9061: EXCESSIVE POSITION ERROR (SEMI-CLOSED/CLOSED LOOP)
spindle alarm (serial spindle, alpha i) · Fanuc 0i-D
What it means
The position error in semi-closed loop or full-closed loop spindle control exceeded the permissible amount. When the spindle serves as a controlled axis, accumulated position feedback diverged from the commanded position past the tolerance.
Likely causes
- Position sensor fault or intermittent feedback
- Position-loop gains inappropriate for the mechanics
- Mechanical backlash or slippage between sensor and spindle
Need the part urgently?
Send us alarm SP9061 with your machine details — typical RFQ turnaround is 24–48h.