ESS Mode Documention up to date?

Q&A and troubleshooting
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1

Hello,

i found the ESS mode docu ESS mode 2 and 3 [Victron Energy]

When i look in my node red i find different value descriptions for 1, 2 and 3:

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What i have to do to forcefully discharge battery to grid.
it tried with ESS Mode 3 (external Control from NodeRed Description)
and Setpoint to 20000 or -20000.

But it does not work.

Inverters are Multi RS.

BR

2

The multi rs don’t work quite the same way the ve bus inverters do and the document you linked refers to those.

3

thanks, do you know how to discharge to bat to grid?

4

Lol. Was going to fiddle to check. Do you have a grid code set?

5

Look specifically for the Mutli RS node. You enbale and disable feed in from there.

The one that doesn’t work from what i can tell is the grid set point. (But looks to be in the works since it is visible)

Summary

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6

Lots of fiddling learned me the following:

  • For the MultiRS you use the Multi RS (control) nodes.
  • Setting ESS mode to 3 allows you to control the ESS power setpoint manually from NodeRed
  • it may be needed to keep sending the requested ESS power setpoint every xx seconds.
  • In a 3 phase system with 3 MultiRS’s you can (and need to) control each MultiRS ESS power setpoint individually
  • If you have a Canbus connected VM3P75CT Grid meter (and it is properly configured in the MultiRS settings) your requested value will be referring to grid draw or feedin as measured by the VM3P75CT
    Without this grid meter your requested ESS setpoint refers to the AC-in of each of your MultiRS’s

This is what I was able to figure out so far, and it works quite well for me. I had the system running under NodeRed control for about a month but now allow DESS to manage my system automatically most of the time.