I have the following components:
- Multiplus-II-48/5000/50-70
- Gerbo GX
- 2 x BlueSolar 150/35
- 2 x Pylontech US5000
The DC side of this setup is running perfectly for over a year now, all components are setup with the current FW. I have no grid codes set and don't want any backfeeding at all. AC-1 is used purely as AC-Out for consuming loads.
I want to be able to use AC-In with a grid connection for charging only, so that when the battery is low and there is no expected solar next day(s), I can charge the batteries during the cheapest grid hours at night between 2am - 4am. I got it partially working by controlling supply to AC-In via a relay, but this seems to results in warnings and error messages every night.
I understand that ESS can be used to program the MP2 to charge during these hours, but I am getting conflicting infos here. In the forum there are posts that a grid code needs to be set and ESS assistants loaded on the MP2. However, in this video https://www.youtube.com/watch?v=ZntrN-J2xkQ with Lance Vickery (Victron), he clearly states that a grid code is NOT required and that it's possible to do this with the ESS on the Cerbo. However, on the Cerbo I only see "No assistants available" under the ESS settings.
Quite confusing.