I have Multiplus II 5000W in ESS, coupled with two Fronius inverters, one on the AC in and one on the AC out (they are connected to one Datamanager). Yesterday, I have noticed that limiting grid feed in is not working. Everything is set correctly in Fronius settings (DNO editor, MODBUS). I can’t say for sure when it stopped working, because there was no excess production during the winter months. Everything worked well last year. The second inverter was added in November with solar panels to the south in order to boost the output during winter months.
The changes, updates made in the meantime are:
I connected one inverter to the AC in few days ago. Both inverters were on the AC out, but with the increasing solar irradiation, the power started exceeding 5000W so I put one to the input.
Fronius online support updated (in fact downgraded) my firmware from fro36120 to fro32071. This was done to solve the problem with light flickering.
Has anybody idea why limiting feed-in is not working?
Was it also ‘moved’ in its position in the GX? One assigned to ac in and the other assignment is ac out. Correct and corresponding to the units in each physical place?
Thank you, I have moved Fronius to the input because of 1:1 factor. It looks like I will have to install the meter, or connect both inverters to the output and lower the power so the sum would be 5kW.
