Hello,
I have the following system:
- a Victron Multiplus II 48/5000 connected to a
- 48V battery system (16 x LiFePo a 3,2V) with a BMS (JBD) system (via RS485)
- a Victron SmartSolar MPPT 150/45 connected to it.
I also have a Raspberry Pi with Venus OS to control the whole system. It also gets the battery state of charge and voltage from the battery system.
Currently the system is not connected to the grid. It is an island system. The Multiplus II still has the default configuration.
For normal operation with battery between 5% an 100% everything works fine. The MPPT loads the battery and using OUT1 I can charge my EV car. On the VRM portal it shows that the
Problem occurs in the following situation. If I discharge to 0% the battery system stops, the battery system will raises "SerialBattery low voltage" and also "low SOC" which the Venus OS gets.
At this time the Multiplus shows the "LOW POWER" LED and stops inverting.
Up to this everything works a expected. The Multiplus shows "fault" on the VRM portal.
If I now charge the battery using the MPPS Smartsolar, even at 20% and a voltage for example of 52,3 Volts, the multiplus still stays at "Low battery". Only way to reset this is to power off the Multiplus and power it on again.
How can I configure the Multiplus to come back again automatically when voltage is again back and go to normal inverting mode?
Thanks for your help!