Currently we have a 3-ph system that is parallel to the grid. Utilising the AC IN as the in and out.
I was able to use node red and the relay in the Cerbo to close the AC Out 2 relay when the batteries reached 90% (acting as a dump load). This worked and if it were an off grid system would work great. However, this system is grid connected and when AC Out 2 closes its relay, rather than using the solar/batteries it uses the grid to supply the load.
I looked for any sort of command or control that could ignore the grid when batteries get to 90% but was unsuccessful.
Does anyone know what control or command I may need to use to prevent the grid from being used to supply this load?
Here is the AC Out 2 relay control I have used
