Hello,
I've tried thinking of ways to make this work and it's befundling me.
I've created PLC code for an alternating 2-pump system but can't wrap my head around programming this 3-pump system. I am programming in RSLogix 500 so I must use ladder logic.
My system has three(3) pumps. The system should operate like this:
• Two(2) pumps to be "online" at any given time. A pump can be “online” if it is not faulted, is in auto mode, etc etc
• Pumps shall rotate to “online” status. I.e. Pumps 1&2, then Pumps 1&3, then Pumps 2&3, then Pumps 1&2…
• Only one (1) pump shall run at a time. Once this pump runs for 5 minutes, the first pump shall stop and the other “online” pump shall run.
• Once both pumps have operated, the pair of “online” pumps shall rotate.
Your thoughts?
I've tried thinking of ways to make this work and it's befundling me.
I've created PLC code for an alternating 2-pump system but can't wrap my head around programming this 3-pump system. I am programming in RSLogix 500 so I must use ladder logic.
My system has three(3) pumps. The system should operate like this:
• Two(2) pumps to be "online" at any given time. A pump can be “online” if it is not faulted, is in auto mode, etc etc
• Pumps shall rotate to “online” status. I.e. Pumps 1&2, then Pumps 1&3, then Pumps 2&3, then Pumps 1&2…
• Only one (1) pump shall run at a time. Once this pump runs for 5 minutes, the first pump shall stop and the other “online” pump shall run.
• Once both pumps have operated, the pair of “online” pumps shall rotate.
Your thoughts?