bobwithdana
Member
I have been tasked to maintain 80 PSI water pressure in a 6 ingh pipe using two 40 HP pumps with two Powerflex 700 VFDs in and existing Controligix PLC system.
This needs to be a lead lag system with one pump controlling until the demand reaches a certain point when the second pump is needed.
There are challenges as we dont want the second pump to run below a certain frequency.
I know I can Hack some code to work but am asking for some ideas that will be clean and easy to troubleshoot. Kicking around some ideas in my head about using a cascaded PID loop but wanted to throw it out there in case any of you have run across this before.
Thanks in advance
Bob
This needs to be a lead lag system with one pump controlling until the demand reaches a certain point when the second pump is needed.
There are challenges as we dont want the second pump to run below a certain frequency.
I know I can Hack some code to work but am asking for some ideas that will be clean and easy to troubleshoot. Kicking around some ideas in my head about using a cascaded PID loop but wanted to throw it out there in case any of you have run across this before.
Thanks in advance
Bob