I have built a system for a customer. Been running for 2 months. It is Cerbo GX, 3-phase Multiplus-2 5000va, 64kwh, VM-3p75ct, 3x Fronius Symo 10kw(34kwp, East/West, Fronius Smartmeter.
Fronius is one of the units Master and the other two slave. The property has 3x20A main fuses to the electricity grid. Fronius connected to Cerbo GX, both pv production and feed-in limit. Fronius smart meter is only as a backup limit in case Cerbo GX loses contact.
Most of it works ok, but grid limit does not want to work optimally. The hope is that the battery will charge if the pv production is over 3x20A (14kw) and the house does not consume the rest. But it does not want to work that way. If DESS does not charge, the pv production is limited to 14kw. If I turn on manual charging, the PV production increases immediately to 20-22kw. I have tried different settings, should it be PeakShaving limit export? Or that DESS would learn how much PV production will be available and plan the charging better after that?
Have I missed any settings or does the system not support this function yet?