PLC Motor Control


#1

Motor starters are of many types however the scope of this PLC tutorial is confined to simple motor starter.

It should have the following provisions.

  • Push button to start the motor : The motor should continue to rotate even when the push button is released.
  • Stop Push button to halt the motor after it started.
  • Over current protection : In case of over load, the motor should stop automatically by the signal coming from contactors of overload relay.
  • Limit switch : It should prevent the motor from starting and can also stop the running motor.
  • The motor starter should also have indicator (Lights) to show ON or OFF status of motor.

PLC Motor Control Logic