I am designing my system and I'm unsure if i need to connect the charge disconnect from the BMS to the mppt (and multiplus?), in order to stop charging in the event of cell over voltage. The BMS is connected to the multiplus via AC detector with VeBus, the color control is connected to the multiplus via VeBus, and the mppt is connected to the color control via VeDirect.
My system will be;
4 x victron 90Ah lifePo4 (2 series, 2 parallel for 24v)
Victron Mppt Solar Charge controller with vedirect port (model not certain yet)
Victron Multiplus 24/3000/70
Victon color control GX
Victron VeBus BMS
Having done some research i have reached a point where I have the following questions, but cant find a definitive answer;
1. Will the color control recieve a signal from the BMS via VeBus to halt charging from the mppt (or multiplus if ac in active) in the event of imminent cell overtemperature or overvoltage?
Is it neccesary to use a Battery Protect or Cyrix li-Charge between the mppt and the battery positive busbar to monitor the bms signal and disconnect the Charge supply from mppt (and or multiplus)?
2. If the BMS cannot communicate to cut the charging source through VeBus, considering the MPPT VeDirect port is already in use to the color control, which is the correct solution?
Use a battery protect in "reverse", or a Cyrix Li-Charge?