I have a system consisting of the following components:
6 × Victron Quattro 48/15000/200-2x100
5 × Fronius Symo20 inverters
1 × Datamanager 2.0 (all PV inverters are daisy-chained)
288 × SunPower VL1-1820 2V batteries, 1370 Ah C10, connected as a 48 V bank
1 × Victron Grid Meter
Color Control GX connected to all devices
The system is 3-phase, with 2 Quattro units per phase.
All inputs are connected to Input 1 (I1), operating in parallel.
My questions:
How should I correctly configure the ESS system? To what minimum battery voltage can I safely go?
Why does the Color Control GX show only one inverter, even though all PV inverters appear in the PV inverter menu?
The system needs to operate with feed-in limiting (zero feed-in).
Can someone help me? I can access the entire system remotely, so I can send screenshots of any menu if needed.
It just doesn’t control the inverters, only the one that’s there. After the update, everything went crazy here. Can’t I delete it somehow?
The system is not charging from solar panels because it only sees 1 inverter. If it produces into the grid, then it will take as much as it needs.
This used to work by using extra energy.
I have attached the current settings, are they good?
The exact situation is that this whole system was basically dropped on me. Back in the day, the system ran relatively well for about three years, then it was forgotten and shut down. Later, someone tried to turn it back on for testing, changed everything randomly, and the system even fed power back into the grid, which resulted in a pretty big fine for the company.
Now it’s my turn to sort everything out. At the moment, I’m at the stage where — since this is my field — the 5 Fronius inverters are properly daisy-chained and producing consistently. The Victron already detects 2 inverters as well, even though the rest also appear in the device list; for some reason it’s not using them, and I don’t know why.
I managed to piece together the ESS with the help of VE.Bus to some extent, but I still don’t know exactly what needs to be configured and how. That’s why I attached the settings, so you can check them too. Unfortunately, I can’t find a proper manual either. So this is where I’m at right now.
First a warning, updating firmware on the inverters resets them to factory default, only do this if you have a very good reason.
For connecting the fronius inverters to the GX device there is a guide here
ESS quick installation guide here in the ESS manual to get on overview of the ESS setup and the parts involved
There is some basic information for the battery cells in this brochure, settings for them depend on how you want to use them. When not using a BMS you want to change battery settings in the inverters themselves, provided nobody changed the settings or updated the firmware they should still be ok.
If you want to check the inverter settings (recommended, also take a backup) you need to use a USB interface, more information on that in the quick guide, if you don’t have access to the MK3 interface you can use the vrm with remote veconfigure, i personally prefer the MK3 interface.
If the battery settings in the inverter are gone i think there is a default OPzS setting you can use.
