Takisawa 6m. 3axis mill. When jogging the Y axis, 401 servo alarm. Same position every time. Appox. mid travel. Open the cabinet and the X axis drive is getting the fault (TGLS). Could the X axis harness be flexing during the Y travel and making intermittent contact? Turn off the machine, grab the ball screw by hand and rotate Y axis off this position, fault resets. Jog to mid travel, alarm again.
Anyway of testing continuity of circuit?