I have the configuration attached on my boat. The float switch turns on, and the pump runs, until the float switch turns off. This is 12v line and runs about 3-4amps. How do I wire in the digital input so I can see when the pump is ruining when not at the boat? People have stated I need a relay and/or optocoupler. But where would I wire this in, which relay, which octocouoler. I really can't seem to figure this out and need someone to explain it super simple :-) thank so you so much!
If the pump and float function by themselves, you need nothing else but connect it to the output of the inverter. This way, it will run on your inverter's battery or grid. You don't need it to program it through a digital input, if you only need the basic function.
if you take the active switch wire from the pump and connect it to the cerbo digital connection 1 then when the pump turns on this sends the signal high and the cerbo will then count this as on, when the pump float turns off the signal will go low and the cerbo will report a off state.
you can use all 4 if you want one for each bilge pump.
this has worked fine for me
