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snaptec avatar image
snaptec asked

Multiplus II GX enable ESS Mode 3

Hello everybody,

I'm trying to enable ESS Mode 3 with a Multiplus II GX.

In Ve Configure I set the GridCode and configured Inverter/Charger and added the Assistant "ESS".

I've send the settings to the Multiplus.

On the web interface of the CCGX unter Settings -> ESS is just shown "No ESS Assistant found".

Tried reboots and made a fw update to 2.33.

What did I wrong or what did I missed?


Final goal:

Have a "dump" bidirectional inverter for charging / discharging over Modbus like here:

https://www.victronenergy.com/live/ess:ess_mode_2_and_3

in Mode 3.

Multiplus-IIESS
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2 Answers
zak avatar image
zak answered ·

In "System setup"<"system name", do you have the ESS checked ?

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snaptec avatar image
snaptec answered ·

omg, thanks Zak.

Shame on me, that was on Auto.

Now ESS is available.

Where is that documented?

I thought that this is just a name for the Display.


I think that "external control" is the right config in ESS for using mode 3 and controlling via modbus?

Anything else I should know or configurate?


The battery connected will be liion, with its own balancers and bms.

High/Low Voltages are configured.

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Daniël Boekel (Victron Energy Staff) avatar image Daniël Boekel (Victron Energy Staff) ♦♦ commented ·

Hi @snaptec

System name has nothing to do with functionality.

ESS assistant not being available: was the Multi connected and on? if not it is not available.

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snaptec avatar image snaptec Daniël Boekel (Victron Energy Staff) ♦♦ commented ·

its a multiplus II GX.

When its off the gx part is also off!?

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Daniël Boekel (Victron Energy Staff) avatar image Daniël Boekel (Victron Energy Staff) ♦♦ snaptec commented ·

it depends, see manual:

https://docs.victronenergy.com/manual-multiplus-ii-gx-24Vand48V-3000and5000-230V.html#on-off-behaviour

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