Controller Power Failure Alarm
I am getting this alarm as shown in attached snapshot on both redundant controller(PM861), P(Power Led) on both controllers is green. But I don't know why this alarm is coming. Can anyone suggest the possible cause
Configure SA and SB (Supervise Power A and B) these are the PINs available in Power terminator of Both CPU, and these can accept Relay contacts so you can do the wiring from the power supplies of respective.
refer controller hardware manual for how to do the wiring.