Multiplus „Low Battery Warning“ cut off AC, how to disable?

[deniasol (Michael)]

I finished my camper setup but unfortunately it´s not working as expected. If I connect a Induction hob with a consumption of 1700W, after 2-4 minuts the AC voltage is switched off because the Multiplus restarts.

If I start cooking with the hob, the voltage of the batteries is approx. 13.4V at start timre The voltage drops slowly during operation, the current (DC side) is 60-70A per battery pack, in total approx. 130A. After 2-4 minutes (the time varies) the voltage drops to approx. 13V. As soon as the voltage drops below 13V, the Multiplus 12/3000/120-50 switches off the AC supply and the error message appears in the Cerbo GX:

Low battery Voltage

Settings in VE Configure:
DC input low shut down: 11V
DC input low reset: 12V
DC input low pre alarm: 12V

Settings in Cerbo GX device:
DVCC is activated:
SVS – Shared voltage sense = active
SCS – Shared current sense = active
SCS status = Disable (External control)
Controlling BMS = Battery Aggregator

System-Setup:
Cerbo GX
2 JBD BMS each with 4x EVE LF280K cells, together 560Ah.

From EVE datasheet:
Cell Full Voltage 3650 mv / 14,6V
Cell Minimal Voltage 2500 mv / 12V
Standard charge and discharge = 3.65 V/2.5 V = 14,6V / 10V
Cut off voltage of charge / discharge = 3,575V / 14,3V

Regarding datasheet from batteries, BMS and Victron as I understood it should be not a problem to run the system with a continuous current of up to 200A.
Hope someone can take a look at my setting and maybe give me some hint to solve the problem.
Thanks a lot!

[Marcel-Vanlife]

See Victron Multiplus 2 12V 3000 120 - Powerdown - Schaltet sich ab -- Reboot

Check your breakers

[deniasol (Michael)]

Hi, thank you very much for your help. I will check and post the results here.

[lxonline (LX)]

@deniasol

The voltage drops slowly during operation,

The voltage dropping, is that voltage at the ve bus terminals or battery voltage?
Is there a difference between the 2

[deniasol (Michael)]

@lxonline As I understand the voltage which I can see as Touch GX under section “Multiplus 12/3000/120-50”, is referring ve bus terminals. However, if DVCC is activated, voltage and current are the same values like “Battery Aggregetor” and voltage are the same like in each separate “SerialBattery”:

@Marcel-Vanlife Thank you very much for your help! Thks to your comment I could solve the problem. To do a test run, I just bricked the fuse. So I could run 200-240A over 15 minutes. Great! I will change the fuses.