unsaint32
Member
I am always studying motor applications. We have a coiling machine that uses Lenze motors, Controllogix 5000 PLC, and Powerflex 525. There are two digital inputs to the PLC; one for motor thermistor status and the other for motor brake status. The wiring box right on the motor has terminal B1, which is the source for the motor thermistor status. But I just cannot find the source for the brake status. I am looking all over the machine for some kind of resistor for the braking, but cannot find it. Could it be somekind of electromagnetic brake that is inside the motor housing? But there was no such wire inside the wiring box on the motor. Any idea where this motor brake status digital input is coming from?