Switching of a load or PLC via the outputs of the motor controller/Plug & Drive motor Motor controllers/drives Configuration examples Motors with controllers Configuration examples The motor controllers and motors with integrated controllers have open collector outputs. To switch a load or PLC, you require a relay according to this circuit diagram. The flyback diode is required. Please don't exceed the maximum switching current or the maximum voltage of the selected controller/drive. You can find this information in the product manual. SMCI35: A load/PLC cannot be connected with this controller.