Multiplus 2 external curent sensor

DIY
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1

Hello,
I am planning my own battery system for my house.
I have a 10 kW peak SolarEdge PV system and a Landis+Gyr E320 smart meter.
I can make the data from my solar system and the meter available via Modbus.
For my 48V, 16kWh battery system, I want to use a Victron Multiplus 2 as the battery inverter. The BMS will be a DALY Smart BMS.

Now to my question.
How do I connect my smart meter to the Multiplus so that I can charge the batteries with the surplus electricity I have?

Best regards
Jonathan

2

I have a similar arrangement with AC Coupled Solar Edge.

I use the Victron approved ET112 grid meter which uses a serial connection, I don’t use my L&G Smart Meter, even though I do have MPPT connection to the L&G’s HAN via a ‘Glow’ display, and a newer Octopus Mini they are both too slow for control purposes, and you want something that is under your control, not Crapitas.

This must be positioned between the main supply circuit breaker and the SolarEdge / MP inputs as default, although you can connect the SolarEdge on the output side of the MP, see the notes in the ESS design and installation manual, https://www.victronenergy.com/upload/documents/Energy_Storage_System/6292-ESS_design_and_installation_manual-pdf-en.pdf.

I use Modbus over TCP to connect the SolarEdge to my Cerbo GX / Venus OS system, this can be a bit flaky, but allows the Cerbo to manage the SolarEdge kit, you may need to change the settings in the SolarEdge to use Modbus if it has not been set up, you could use a direct modbus over RS485 connection as an alternative.

Set the grid feed in to your permitted export values, as the MP plus the SolarEdge could output more power to the grid than you are allowed to.

I have some of my PV panels as DC connected as well as using SolarEdge (I have a shading issue that the optimisers used by SolarEdge solve).

3

Hello thank you for your fast reply.

If I want to set up a Venus OS on raspberry pi how do I do this. I found the manual to lack information at the interesting parts regarding the SetUp.

Best regards

Jonathan

4

The manual will only help with the official product that it is written for.
A quick google lists the online reference for Venus and the Pi.