Multi RS Solar - control from extern

Question

question

Robinson Crusoe asked Dec 20, '22

Multi RS Solar - control from extern

Hello,

I hava a Multi RS Solar, with a BIY 48V Batterie (20kWh).

I want to use the "Multi RS Solar" only a as charger/discharger for the battery. Goal: Zero feed to Grid and later combined w/ stock market prize (to feed it at high rates).

So far I'm struggling on how to control the device. I set up VenusOS on a RPi (w/ CAN Hat), running fine so far, Multi RS is detected. But it seems linke ESS is not implemented for the Multi RS Solar.

Has anyone an Idea how to tell the setup to charge and set limit power/current?

Is there an way via Modbus or BMS CAN interface?

ESS Modbus TCP VE.Can charge controller compatibility

2 |3000

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

Modifications Space

Node Red Space

Answer 1 · 2022-12-20T10:14:19Z

nickdb answered · Dec 20, 2022 at 10:14 AM

ESS is not supported

The Multi RS does not yet support grid codes, and therefore does not yet support ESS installations. It is not yet known if the current hardware revision will be able to support grid codes, or ESS, via a firmware update in the future.

It should function fine for your purposes because it can't feed back.

You just have limited control via the victron connect app.

You can pull/set some data as there are nodes for the RS in node red.

But I suggest you read the docs carefully, they are clear about the limitations and there are many posts here to be referenced on the topic.

2 |3000

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

question