ThreatLevelMidnight
Member
I have 120 VAC feeding a Micrologix PLC. I am feeding my I/O with 24 VDC using a power supply. If I add up the current draw of all I/O, I get 5 Amps (largest draw from a limit switch). Does my power supply need to match that value? Asking because not all I/O is on all of the time, yet, I know over sizing won't hurt. The first power supply we bought is rated at 0.42A (haven't hooked up), so want to get the proper size before we trial.