What is the connection between PLC and motor, including ordinary motors and stepper motors. What is their power supply?
Most motors are not powered by a PLC. The PLC is only a function of operation judgment. It is generally necessary to control the contact device that is powered by the motor.
PLC links with ordinary motor, controlled by the PLC contactor, contactor control motor, or with PLC control inverter, the inverter control motor, power inverter supply, step motor (including servo), controlled by the controller, the power source controller, PLC controller.
Contactor is electromagnetic switch, PLC provides only a small power switch, to control the intermediate relay, have intermediate control contactor, contactor to connect power, side of the motor, the controller, is to control the step motor, if you want to program, must provide detailed control requirements.
The motor and the PLC are completely different units. The motor is a three-phase communication. In addition to the dc DC24V, or DC5V motors The general motor refers to the motor, which is 50HZ, three-phase ac motor, and three-phase AC380V The PLC is connected to the motor power by controlling the contactor. The step motor is a pulse signal and needs DC5V ~ DC24V power. The same power can be used with PLC.
