question

Paul B avatar image
Paul B asked

2 x multiplus with ESS not exporting AC power correctly

System setup is

2 x 24 volt multiplus 5000 in parallel all on 494 fw

1 x Cerbo on 2.82 fw

ess installed power assist is OFF

The issue is that I have set the grid set point to -1500 watts as below HOWEVER it exports 3200watts,

and this also happens on the shore power current limit. if you limit it to 10 amps it sucks double

This has been happening for quite some time and and as far back as 481 FW

Has anyone got any tips as to what to look for


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ESS
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1 Answer
Matthias Lange - DE avatar image
Matthias Lange - DE answered ·

The AC input current limit is always for each Unit.

But the grid setpoint shouldn't be doubled, this seems to be a bug.

Can you go back to Venus OS 2.73 to check if this bug was introduced in 2.80/81/82?

Via Victron Professional you can find a link to a Venus OS archive (Cerbo = Einstein).

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Paul B avatar image Paul B commented ·
Hi Matthias, Thanks for the reply - I have reported this before as well when it was on 2.73 - I think but no solution was forth coming and as its manageable I never pushed it - in regards to the Grid power Limit doubling up that is - but this new issue in the ESS has just been noticed and really I only picked it up as we were trying to export some battery capacity - from 100% down to 80% SOC for some other testing. I presume the two issues are related - but I cant find a reason.



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