I am about to switch from a three phase SMA to a three phase Victron ESS… The three phase system runs on a large VRLA.
There are plans to add another system with a smaller MP II and a large LiFePO4 bank. That system shall be single phase.
To improve overall efficiency, I plan to start / stop the large three phase system with the codesys controller that controlls everything.
Start / stop can be either by modbus write, dry contact or something else.
It would be great if the larger system could also be cold startet by the codesys controller in case of a power outage, but a manual start would also be acceptable.
Please someone point me in the right direction.