I have a multiplus II an for smart solar chargers connected via busbar to an LFP battery.
I want to configure my multiplus II to charge the battery only via grid and not via PV so the PV charging should stop.
How should I do this ?
And why do you have PV ?
It is for situations when the energy price is negative. I want to push all power from my old grid connected PV panels to the battery but want to prevent my DC coupled PV is filling the battery.
Today the energy price was -27c so I had to pay for my AC coupled PV sending power to the grid.
I want to empty the battery during the night and direct the AC coupled PV to the battery but I want to avoid my DC coupled PV is filling the battery so I can’t redirect the AC coupled power long enough to the battery.
Take a look at dynamic ESS (DESS), but I’m not sure if that priorities the AC PV and throttles down DC PV.
I guess it’s also possible to use NodeRed to disable the DC PV if the energy price is negative.