Hi Everyone,
I have a Fan that recently did not start running when it was suppose to. The PLC is monitoring the Contactor AUX contact to get its run status. The AUX must have been pulled in but for some reason the fan motor did not run. If the AUX did not pull in the system would have shut down on alarm but that didn't happen. The system was running normally but the fan was not running. The main breaker to the fan motor is also feeds the CVT for the panel so I know that was on or the system would have not ran at all.
This is a situation where I need the fan to be running for the equipment to operate safely. So I am looking for ideas on how to know the motor is running other than using the AUX contact. I was thinking of using a current switch on the wires to the motor. Anyone have experience with those?
Any ideas you have would be very helpful.
Thanks!
I have a Fan that recently did not start running when it was suppose to. The PLC is monitoring the Contactor AUX contact to get its run status. The AUX must have been pulled in but for some reason the fan motor did not run. If the AUX did not pull in the system would have shut down on alarm but that didn't happen. The system was running normally but the fan was not running. The main breaker to the fan motor is also feeds the CVT for the panel so I know that was on or the system would have not ran at all.
This is a situation where I need the fan to be running for the equipment to operate safely. So I am looking for ideas on how to know the motor is running other than using the AUX contact. I was thinking of using a current switch on the wires to the motor. Anyone have experience with those?
Any ideas you have would be very helpful.
Thanks!