Hello everyone, I would need your recommandations on a specific subject, I hope you will be able to help me!
I’ve recently installed in my house a Multiplus 2 combined with existing solar panels (Solaredge inverter) and 4 Pylontech batteries for ESS purpose, everything seems to be working well!
My wife has an electric car and she’s using a Wallbox charger with current sensor which is able to use only the production from the solar panel and as you can imagine when the multiplus and the EV charger are both connected/working, they create some concurrency issues because both try to use the electricity generated by the solar panels.
To solve this, I managed to create an integration with Home assistant, so when EV charger is plugged in the car, I changed ESS settings through modbus, registers 2704 & 2705 to limit multiplus charger and inverter power to 50w.
It works but it’s not perfect, it seems the regulation takes some time to reach the new limits, I also tried to set 0 watt on both parameters but the multiplus is doing a weird noise, I guess it’s not a good option.
Reading at the Excel file with all registers available, I see there is multiple registers named /Mode where it seems I can turn off by software the system but I don’t feel confident to “play” with them.
What I think could be interesting for me to disable/enable the multiplus in a soft manner when our car is charging:
- Inverter on/off/eco (register 3126): on/off/eco
- Switch position - Multi (register 4531) : on/off
- Switch position - VEBus (register 33) : on/off
- Charger on/off (register 2317) : on/off
- Inverter on/off/eco (register 3126): on/off/eco
Do you know which one would be the most appropriate to enable/disable the multiplus operations and if it would be safe to use them? (I don’t want to have inconsistent state or reset everything now)
Many thanks for your help,
Benoit