I have the pacific scientific servo amp and ac servo motor used in cnc machine for contol of width in auto insertion machine of universal on drive sign indicates zero when we try to start its homing zero means power stage disabled so tell me what can be cross point to check this mechanism for reparing

Motor which runs in discrete movement called steps.it does not rotates continuously as other mmotors does.the stepper motor is a special type of synchronous controller.which is designed to rotate through a specific number of degrees for each electrical pulses received by its controller.

Dear sir,

First, align mechanical zero to electrical zero/electronic zero setting and fit it, it will become all right.

Secondly, after alignment to mechanical zero check the current in the motor. The current must be zero.