SP0031
Motor Lock Alarm
Fanuc · AC Spindle Motor αi-βi Series Parameters
What does SP0031 mean?
The spindle motor is detected to be in a locked or stalled condition, preventing rotation. This can be due to excessive mechanical load, a brake issue, or a fault in the motor itself.
Repair Steps
Verified technical data. Last updated: March 2026
Source: Fanuc AC Spindle Motor αi-βi Series Parameters