watsonelectrical
Member
I'm new to plc programming but I was wondering if anyone has a sample program for a dual air compressor lead lag circuit for a SLC500. This would be activated by Wonderware and only one compressor would run at a time. If #1 Compressor is running and the pressure falls below 60psi, then #1 would cut off and #2 would come on. Also there needs to be a 5000 Hour Timer to Flip-flop the compressors and alarm for maintenance.