I own a PCNC with a 5 hp HSD 3 Phase spindle. Recently the x axis has begun to creep to the right when the spindle is on. I believe this movement is do to the torque of the spindle. Any ideas on why this is occuring?

The shaft of the X axis servo motor is turning. Thus do I have a failure of the encoder or servo motor?

I do appreciate any words of wisdon.

FFAMN