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

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

Problem Description

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

Problem Diagram

Pulse timer can be used when input signal is pulse time. We can use pulse timer to set motor for a programmed duration.

The instruction is started when result of the input changes from 0 state to 1 (or positive edge). 

In this timer if a new positive edge trigger, the signal state at the output is not affected as long as the programmed time is running.

In case of, PLC we can use pulse timer instruction. In this take NO contact of the switch and pulse timer between NO contact and the output coil.

For practical give positive edge to the timer, timer will start and after that other positive edge will not affect the timer.