Outages:
1. Not caused by PLC. Outages happen in Local Mode or Auto Mode.
2. May be related to current sensor in the starter. Many of these "smart" starters have a metering module mounted on the bucket. And these current sensors are reading too high....in other words, a clamp-on Fluke...
We have had numerous random equipment outages with the Cutler-Hammer Advantage 480 volt motor starters. This typ occurs with smaller drives (less than 5 HP). We have performed extensive harmonic analysis on the plant's power. Sure our plant has a little noise, but we are clearly less than the...