Motor ON/OFF application using OFF delay timer and OFF delay timer instruction of the PLC.

Motor ON/OFF application using OFF delay timer and OFF delay timer instruction of the PLC.

Problem Description

Motor ON/OFF application using OFF delay timer and OFF delay timer instruction of the PLC.

Problem Diagram

OFF delay timer means provide delay between two events. If we want to turn off any motor after some delay, we need to provide OFF delay timer before motor.

We can provide physical OFF delay timer or PLC timer for the motor. Take NO switch and connect timer and set the delay (5s ,10s etc.) and make the switch ON, motor will be ON. If switch is OFF, motor will not be turned off immediately but it will take delay provided in timer.

In case of PLC, take NO contact for the switch and provide OFF delay instruction between NO contact and output coil.

When NO contact signal state is 1, Output signal state is 1. And NO contact signal state is 0, OFF delay timer starts to count time and after delay it will make motor turned OFF.