You will learn the motor feedback fail logic in PLC which initiates an alarm signal if the motor was not started in 5 seconds.
Let us understand the logic written for detecting motor failure and stopping the system.
A start pushbutton is used to start the motor. A stop button is used to stop the motor. After pressing the start pushbutton, the motor will be started but due to any other reasons if the motor was not started in 5 seconds then initiate an alarm.
This logic is basically divided into four rungs.
Let us understand the flow of each rung one by one:
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View Comments
how can the timer work while not getting power supply
Is #Motor_Fb tag in rung 2 a PLC input?
Yes, motor running feedback from substation/mcc.