I bought a moller easy 512 plc, in hopes of using it to be able to automate 3 pumps. Problem is how do I "program" this plc to do what I want, "very basic ladder schmatic" such as: I have 3 pumps, I want 3 conditions to be met before pump#1 starts: a.)LSS: low suction shutdown b.)HS: high system c.)LS: low system then pump#1 comes online @75psi w delay timer of 5 sec then a minimum run timer of 5minutes, now if pump#1 senses a pressure drops to 70psi pump#2 kicks on with 5 sec delay and minimum run time of 2 1/2 min, if pump#2 drops to 65psi then pump#3 kicks on with 5 sec dealy and minimum run time of 1 1/2 minutes.
I realize that I only have 4 outputs with this relay so I can scratch the indicators and just use a fault message with the plc. just need help with that too....uggggg....