I have a mobile system with a Cerbo GX, BMV-712, a number of MPPTs (100/20) and a Phoenix inverter. I have enabled DVCC and set the float and absorption voltage values but these values are not propagated to the MPPTs. The batteries are non Victron with their own internal BMS. All devices are connected tri Cerbo via VE.direct cables. Everything seems to work as expected otherwise.
Why do the MPPTs not listen to the DVCC settings and instead keep using their own values? Any help would be greatly appreciated.
DVCC, Limit battery voltage only works like you are expecting IF the battery BMS communicates with the Cerbo GX and sends CVL, CCL and DCL that are then passed on to the connected chargers. The BMS also has to be set up as the controlling BMS in Settings > SYstem Setup > Charge Control. This is all explained in the DVCC Section of the Cerbo manual.
Thank you all for replying. Yes that explains a lot. The way I understood the manual was that the BMV-712 sufficient for the DVCC to work in that way. From your screenshot, pwfarnell, I can see now that the Controlling BMS section is not showing on my system, which is obviously crucial. I didn’t know what I was missing …so to speak. Thanks for your help.
The newest version I am running is v3.54. I wonder if you go back, it might be there. Maybe it was removed. But you need to select no BMS control for it to work.
…so to speak. Thanks for your help.
