I am glad the motors and drives are ok. the Estop goes through the plc on the driver board. It could be something on the board that is keeping the estop loop open in the PLC take a look at the Estop contactor coil is it 115V or 24V see if you have the proper voltage accross the coil when the Estop is out. if you do then check the coil with an ohm meter to see if you get a reading( do this only with the power off) also check the button itself to see of it is allowing the current to flow. the Estop should have two sets of contacts, one goes to the an input on the PLC to tell the controller the position of the Button and a hardwired loop for the Estop contactor. try to find where you are loosing the flow of current to the Contactor. Let me know |