question

soe15 avatar image
soe15 asked

ESS + 3 BMZ batteries, system is not discharging at night

Hello,

I've got a ESS with 3 BMZ batteries (364Ah), MultiPlus 3000/48V, Venus, ET340 together with SMA Tripower 20.
Latest firmware on MultiPlus and Venus.
ESS Assistant on MultiPlus acc documentation for BMZ.
System is charging with PV surplus but not discharging, see below.

I tried a lot already incl. reconfiguring Multi, exchanging the Venus with a CC, but no change.

Does anyone has an idea?

Thanks, Stefan


ESS
190216-victron-venus.png (48.8 KiB)
2 |3000
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

3 Answers
boekel avatar image
boekel answered ·

What does 'Konst.-Strom' mean in English?

can you make a schreenshot of the ESS settings?

2 |3000
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

soe15 avatar image
soe15 answered ·

Hello Boekel,

thanks,

Konst.Strom means constant current


06048CFE



-E242-48F5-A236-1E3C726130A5.png


06048cfe-e242-48f5-a236-1e3c726130a5.png (577.9 KiB)
6f2f07f1-05e0-4358-8afa-7f0d1456061e.png (496.1 KiB)
1 comment
2 |3000
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

boekel avatar image boekel ♦ commented ·

Ok. I'm out of ideas for now... what could give some hints to other users here or Victron staff is also posting screenshots of the settings in the Multi's.


If you set gridpoint to something like -200W, does it discharge into the grid?

0 Likes 0 ·
soe15 avatar image
soe15 answered ·

Its solved now.

There was a Smart1 Energymanager in the same network that tried to connect to the Venus via Modbus. Although Modbus was disabled on the Venus, it was disturbing the ESS functionality.

2 |3000
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.