question

lucode avatar image
lucode asked

Low Battery Alarm at 48V in a ESS system

In my EasySolar 5000 system running ESS I get every morning a Low Battery at around 48 V and I can't figure out from where this Alarm (setpoint) is triggered.
The Low Battery parameter in the Multi are set as follows:

Inverter DC shut-down voltage
 37.2
 V
Inverter DC restart voltage
 43
 V
Low DC alarm level 42
 V


The Dynamic cut-off settings in the ESS assistance is unchanged starting at 48V.
DVCC is not enabled. It is pretty hard to see where some effects/settings coming from with ESS, because a lot happens in the dark background (aka blackbox).

In addition, I run Gel batteries without BMS. Float voltage is at 55.2 V, Absorb. at 56.4 V.

ESSEasySolar All-in-Onebatteryalarm
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1 Answer
bobac avatar image
bobac answered ·

that might be cuz

"The low battery warning is active when the battery voltage drops below the dynamic cut-off level plus the restart offset, which defaults to 1.2 Volt for a 48V system. Just like the cut-off voltage, the warning voltage level is also dynamic."

https://www.victronenergy.com/media/pg/Energy_Storage_System/en/configuration.html


and it must be possible to disable it but.... on my MP-II GX (v477) was not be able to do so..

1608574130129.png


but it still be visible on GX display

and here

1608574237111.png


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