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.
