Fanuc alarm 37: Motor not decelerated/stopped after emergency stop
αi SPM · Fanuc αi SPM
What it means
After the emergency stop signal was input, the αi SPM expected the motor to be stopped but it kept accelerating or had not fully decelerated when the standard 10-second window elapsed. Points to speed-detector and accel/deceleration parameter mismatch.
Likely causes
- Speed detector parameter incorrect
- Accel/deceleration time constant shorter than actual machine behavior
- Feedback signal quality issues
Need the part urgently?
Send us alarm 37 with your machine details — typical RFQ turnaround is 24–48h.