F01707 SOS (Safe Operating Stop) Exceeded fault in siemens drive

F01707 SOS (Safe Operating Stop) Exceeded fault in siemens drive indicates that the motor moved more than the tolerance. 

Cause
 

1. Control loop gains too low (drift).
2. External force moved the axis.
 

Remedy

Increase position controller gain. 
- Increase SOS tolerance window (p9530).

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