question

rolandrrr avatar image

Grid current limit not followed?

I have a Multiplus II 48/5000/70-50 and a Cerbo GX amongst other stuff.

I have set the AC input current limit to 4 Amps.
And so if it is charging easily, it sticks to the 4 amps.

But when there is a load on the system, which is greater than 4 amps, it just almost takes 6 Amps (5.6 Amps). Viewing the Multiplus through the Cerbo GX shows an input current limit that cannot be set lower than 6 amps. The loads can be much greater than the 6 amps, and the battery can easily deliver all the power, so the system and its power assist function work fine. But why does it exceed the 4 amps?

I also tried disabling the "overruled by remote" in VEConfigure3 on the multiplus file. This should block the Cerbo GX from messing with it.

I didn't do any ESS configuration on it, which I will at some point in near future.
However, for now it is just a semi-offgrid system which needs to stick to the 4 amps if grid power is available. And if the grid power is available it works in power assisting mode.

current limitinput current
2 |3000

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1 Answer
JohnC avatar image
JohnC answered ·

Hi @RolandRRR

There's a minimum in the Multis, which can't be changed unless Power Assist is disabled. This a snip of a long list from VictronProfessional..

1637216483766.pngThere's 2 models listed there, your's must be the first. The GX knows this, and that's why it won't go below 6A.

Maybe limiting the charge A might help keep it down a little.



1637216483766.png (20.6 KiB)
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Thanks, didn't know that.

Mine is the last one in the list, so 5.7 Amps. Which is pretty much what I was seeing at 5.6 Amps