Multiplus II 48/5000firmware 489 grid stability problem

Hi,

After update from 487 to 489 bring back problem with ESS stability on Czech/Slovak grid.

This problem was solved ESS 017A. Now, after update latest ESS 017E I have problem again.

Periodically system go passthru and back

Victron, can you please check it.

Thanks.

2 |3000

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Alexandra ♦ commented · Nov 06, 2021 at 01:36 PM

@Duto69

Did you copy the old config and load it or set up from scratch again?

Also did you update the ess assistant as well?

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Fredrik Häggblad commented · Nov 06, 2021 at 02:07 PM

Hello. I don't know if I have the same problem or not.
But stability related issues after upgrading my pair(2Phase) of Multi-II 48/5000 from 2623487 to 2623489

ABSOLUTELY!

I using a RS-485 connected Energy Meter EM24, for my system. After updating to 2623489 + ESS 017E the system behavior is erratic!

When one multi feedback, almost full power. The other one starts to charge the battery from grid power! after a few seconds its the other way around inbetween the multis!
And this happens regardles of wich loads I have on the grid or if its completely dark outside.

I suspected it was the updated ESS Assisstant. I had a copy of the "older" 017C Assistant that worked before the FW-update. So I downgraded it.
No difference.
I think it is the xxxx489 FW.
But unfortnally doesent have a copy of the 2623487.vff. So I cant downgrade and test... :-(

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