Hi,
we have a new installation and the guys seam to have problems making the config, so I jumped in...
Situation:
- location: my fathers place: spain/ibiza: grid: 5500W contract, 25A, measured 250V( with a bit load! yes!!! with 2500W load: 225V....yes!!.. ), grid also often has failures and every few years short peaks with even more overvoltage...
- two MultiPlus 5000 parallel as island( house connected to AC-out )
- 7.000kWp panels, 2 SmartSolar MPPT
- 21kWh( 6x Pylontech US3000 ), connected by CAN to CerboGX
- additional power-meter between grid and Multiplus...?
Goals:
1. disconnect grid when not needed( I think I will to that by a external industrial contactor to save the inverters...but for now..could this be done by the internal relay of the multiplus? )
2. only charge from grid if batteries go below 30%
3. grid: only charge/inject max. 3500W
Questions:
1. Which Assistents need to be installed
2. In which way do the VE.Configure charge parameters for the Multiplus matter if ESS is used, this does override a lot or not?
3. How can I disconnect the MPs from grid( in case: 1. there is sun and batteries are not full OR 2. no sunpower and batteries over 30% - in both cases no grid is needed... )
4. I have problems setting up the max charge and injection-limits in the remote console, what am I missing?
5. should I use the grid-meter or inverter as meter?
6. SCS disabled, right?
7. could I setup ModbusTCP and change settings with my PI or will those be overwritten again by the ESS assistant, etc.?
Ok, enough for now, would be cool if someone could help out a bit!
Cheers
Markus