building a field voltage monitor circuit for input to a plc
building a field voltage monitor circuit for input to a plc
(OP)
I need help designing a circuit that will monitor the field voltage of a 24 v. alternator so it will set an alarm thru a plc system when a predetermined voltage is seen. This is for a PM program to help determine when the alternator is getting to a stage in its life when it should be replaced before a failure occurs on the road.





RE: building a field voltage monitor circuit for input to a plc
1) normal operating voltage range compared to "fail" voltage level.
2) Is the alternator tested when loaded or unloaded, and also with or without the usual control circuit present?
RE: building a field voltage monitor circuit for input to a plc
RE: building a field voltage monitor circuit for input to a plc