Dear Team
I need your help once again. I have been trying to connecting my ne system this weekend but I am stuck connecting the rs multi single tracker to cerbo gx and ve bus bms. I can't get any drawing on line to guide me. On vrm portal I am able to see only the smart shunt but not the rs inverter and the bms. Any drawing that can guide me
Hi @atwijukye,
The Multi RS does not support the VE.Bus BMS. The Multi RS has a VE.Can interface instead of the VE.Bus interface.
If you're using the Victron Smart Lithium batteries with a Multi RS and have a GX device in the system, you will need to get the Lynx Smart BMS. It is connected via the VE.Can bus interface. Note when using this BMS set the Remote Mode to Remote on/off when commissioning the product in VictronConnect.
If there is no GX device, you can use the SmallBMS - This BMS is connected using the allow to charge, and allow to discharge contacts from the Victron smallBMS to the I/O connection port. Note when using this BMS configure for Remote Mode 2-wire BMS when commissioning the product in VictronConnect.
There is a bit more info about selecting a BMS in the Victron Smart Manual here - https://www.victronenergy.com/media/pg/Lithium_Battery_Smart/en/system-design-and-bms-functionality.html#UUID-cd9cf1a9-a93e-ce19-b0c9-bb487498f958
Given you already have the smart shunt, it might be more affordable now to use the SmallBMS method - though I would normally suggest using the Lynx Smart BMS instead of the SmartShunt + SmallBMS in this configuration.
Here is an example system schematic showing the Lynx Smart BMS setup
Hi @atwijukye,
That doesn't sounds right that the CVL is forced on?
DVCC is forced on - that is correct
But the charged voltage limit should be able to be switched on or off.
You should be able to adjust the charging voltages on the charging devices (in your case the Multi RS).
Perhaps you could take a screenshot?
Just checking. The multi RS is ve.can not ve.bus. so make sure the cerbo is connected from it's ve.can port to the multi RS.
I'm also assuming the BMS is ve.can? If it is then that needs to connect to the "ve.can BMS" port on the cerbo and not the same ve.can interface as the multi is connected on, if that makes sense, unless the BMS is ve.bus?
