Energy Meter

Hello Community,

I have a problem with the position of the grid meters in my ESS configuration.

I am not allowed to install another meter near my provider's grid meter.

My Multi Plus 2 can only be installed parallel to my Carlo Gavazzi EM24 eth and the feed-in of the Multi would not be recorded on the EM24 meter. However, I could connect the Multi behind a Carlo Gavazzi ET112, but it would not be able to measure the rest of the consumption. Can I configure an ESS system with zero feed-in with this setup?

Regarding
TheEldar

Hi, can anybody tell me if the EM330AV5 Energy meter from Carlo Gavazzi is compatible to Victron. This is apparently the replacement for EM24AV5.

Thanks

Hello,

We're going to use an 3ph ESS system in parallel connection to the main board, we have more than 100A per phase. Victron states in the Energy Meters live that for more than :

Q8: I want to use Current Transformers (CTs), is that possible?

hi all! sorry for the translation difficulties. there is a task to make the ess system. the client already has a backup power system (3 Quattro 48/15000, 16 gel batteries, ccgx) . I want to add a Fronius 20kw and solar modules of the appropriate power (jinko 460wp x 44 pcs.) to the system. but there is one thing. I need to place the Fronius at the outlet of Victron and have it work when there is no mains power. at the Victron output, there is only a reserve load and there is a load up to victron. to compensate for it, I need to set a counter on the input. so that the system sees all consumption and victron gives this power through its input. but the problem is that the introductory machine is 150 amperes, and the Victron counters are all up to 65 amperes. I did not find their configurations with current transformers. how to be in such a situation?

In my one-phase test setup I have the usual „pages“ main screen:

[image]

there is no load connected, the displayed 12 Watts is the Multiplus II itself. AC in is not connected, the „—“ reading is correct. Adding a EM24 as PV inverter meter looks like this:

[image]

So far, so good. Setting up the EM24 in role „AC load“ and changeing the inputs that it meters consumption and not production does not show the EM24 readings in the green AC loads box. The box still shows what the Multiplus measures. ~12 Watts.

[image]

[image]

The attached load behind the EM24 is just the Cerbo, ~3.5Watts.

[image]

With an EM24 as an AC load meter present in the system, I would suspect, that it replaces the Multiplus internal measurement, as it is done with grid metering.

Is there some checkbox or setting, I’m not aware of to change the source of the AC loads display?

Hi

I have two EM24 energy meters in my setup (CerboGX). Both had the option to assign them a role in the setup menu. However, suddenly in one of the EM24 menus the entry "setup" did disappear (changed it before).

How do I get that back? Is it a kind of known bug?

Best Regards

Good day

I need to install 3 x ET112 Grid meters in a single phase installation . Busy with my planning

Meter 1 will be the Grid Meter

Meter 2 Will be the meter measuring the PV Inverters before the input of my Quattro

Meter 3 Will be measuring the PV Inverters on the output of my Quattro.

On the Color control under energy meters I need to assign the roles . On the PV inverters can it be defined which one is before the Quattro and which one is after the Quattro it does not seem to offer me that specific role ?

Some guidance will be greatly appreciated

I have 3 phase Multiplus II 5000 system with gerbo gx and lynx distributor + lynx shunt. PV is generated from MicroInverters. I have grid meter ET340 and also extra ET340 for solar production.

I want to charge my batterys from my car V2L adapter if needed. To display that correctly as genset I could find only one option. To buy one more energy meter ET112 and add that between car V2L and charger 220v input (this 220 line is totaly seaprated from in house 220v wiring). And configure that as Genset meter. Problem is that most of the time this ET112 does not have any 220v connected to it.

Then charger DC output should be connected to lynx distributor otherwise lynx shunt can not show correct soc value.

I could then also use one phase gas generator to load the battery in emergency.

Guten Morgen,

ich steige gerade in die Victron und Solarwelt ein und freue mich schon auf meine Anlage. Grundsätzlich ist der Plan eine PV Anlage mit Multiplus II 5kw + Pylontech Batterie + AC seitigen Wechselrichter(n) (2x 1Phasig oder 1x 3 phasig) aufzubauen.

Als Haupt Energymeter soll der EM24 mit RS485 Schnittstelle über USB angebunden werden.

Zusätzlich würde ich gerne auf dem VRM Portal den AC seitigen WR anzeigen lassen - dafür würde ich den ET340 nehmen.

Wenn möglich hätte ich gerne noch einen ET112 um das Klimasplitgerät (1.Phasig 20A) als AC Last im VRM Dashboard mitloggen zu lassen - ginge das mit der Einbindung und Anzeige und was wird dafür benötigt ?

Der elektrische Teil der Anlage wird von meinem Elektriker erstellt, welcher bereits Victronanlagen aufgebaut hat - nur mein spezieller Wunsch nach mehreren EM hat er so noch nicht umgesetzt.

Ich habe schon einige Websites und Foren durchsucht - gefunden habe ich z.B. den Beitrag Can i use multiple em24 energymeters? in dem "ossi" antwortet das dies gehen würde wenn das RS485 Netzwerk am USB Port aufgebaut werden würde.

In meinem Fall verstehe ich das so:

USB port A: Victron Converter RS485-1: - EM24 ID1 (für Hauptzähler)

USB Port B: Victron Converter RS485-2 : - ET340 ID1 (AC seitiger WR) + (an das gleiche Kabel geklemmt) - ET112 ID2 (AC Last)

Die ID für den ET112 stelle ich einmalig einzeln am Notebook um, und hänge den in Reihe hinter den ET340 so wie hier skizziert:

[image]

Ist das korrekt und werden die EM dann auch im Dashboard richtig angezeigt oder habe ich einen Denkfehler ?

Vielen Dank für die Hilfe bereits im Voraus !

Like many before I have been challenged by installing an ET112 "grid meter" at mains AC entry point when my whole solar setup is in an outbuilding around 40m away. Hard wired communication back to a Multiplus 2 GX is just way too complicated, and would require laying underground conduit to hide cable runs across a large parking area. I did consider the Zigbee option, however, from my experience of trying to get a decent extended WiFi signal to my outbuilding I am not even sure the Zigbee would guarantee a solid connection (it is effectively a wireless mesh system operating on the same 2.4GHz as WiFi. At that frequency passing through 3x 25cm solid walls over the distance required is probably on the edge of operation?).

My thoughts turned to a RS485 radio link. At this stage I know I am subject to scrutiny and I make no guarantees that this would suit everybody's situation. If I could I would go for a hard-wired link... but I can't. I absolve myself from all liability if anyone decides to copy my project.

I have done some projects with LoRa in the UK so the available 868MHz band is well known to me. I stumbled across a RS485 transceiver board on ebay (....don't you just love it?), made by our friends in a different time zone. So, I purchased 2 of these boards to play around with. They use FSK modulation and make the board in 433/868 MHz versions (check your country rules!!). Ideally they run on 5v and the manufacturers claim a free air (line of sight) range of 500m. They appear to do what they claim.

The next part of the puzzle is the link to the GX device. Victron "recommend" FTDI UART chip based serial communication by implication (....that is what their standard connection cables seem to be based on?). There are 2 other UART chip devices in general circulation the CH340 and the CP2102(SiliconLabs). From what I have found the Victron equipment does not natively communicate with CH340 devices (you need the drivers installed). The CP2102 chip works with a Venus GX I have on a raspberry pi system and also with Multi 2 GX (which effectively has a Venus inside). I have not tested with Cerbo GX but there is no reason to assume it will be different since the software is all Linux based?

The USB to RS485 device I bought was the DSD Tech SH-U10. Which is a dongle that plugs into my raspberry pi. Be aware that this will not fit within the Multiplus 2 removeable protection panel over cable entry. You could just get a USB extender cable so that the dongle is outside or, as I am going to do, buy the DSD Tech SH-U10L which comes as a connection dongle on the end of a USB cable... much neater solution.

The transceiver uses less than 30mA at 5V so at the Victron end mine is powered off the DSD SH-U10. However, I have built small mains powered 5V DC power supplies into my devices so that I can run the radio link off a fused spur at my consumer unit end. In fact I used the opportunity at the grid entry point to install a Mains isolator between electricity board meter and house consumer unit in a small secondary consumer unit (designed for garages/outhouses etc). That also neatly houses the ET112 meter, since there was no space left in the main consumer unit.

So, that's it. I 3D printed some ABS boxes for neatness and to keep it housed safely. Although I only "need" the power supply at one end I have just printed the same box at both ends. I have played around with different cable options and have decided that standard internal BT telephone cable is a good option, it is just 2x twisted-pairs within the same cable. Of course this has not been tested to extreme but it has been soak tested for a week or so and appears to connect flawlessly?

[image]

[image]

I have 2 energy meters Em24 one on grid and one on solar cells and no inverter. I get no solar yield on VRM

It's been a known fact that ESS system with ET112 as grid meter is responding very slowly to high load change and that the same system with CT clip is responding much quicker.

On the other hand ET112 is much more accurate in terms of energy usage calculations.

I thought it will make perfect sense to use both... CT to get fast responds and ET112 to get accurate grid usage readings. So I've wired up my system like on the diagram below:

[image]

I've noticed that after connecting CT to Multi I'm getting fast responds to load as expected but, on the VenuxGX diagram my AC Loads has not been calculated correctly (the actual load is about 800W), the meter settings is set to Settings-->ESS-->Grid Metering-->External Meter

While my system regulates feed-in based on "sum of all phases" just fine, all energies shown in VRM seem to always be based on the single phase sums. Unfortunately this also makes many other graphs useless like the consumption diagrams.

Currently the only workaround I know would be to purchase and hook up an external EM24 meter.

This issue has been discussed in other threads already but I couldn't find any info if this is going to be implemented.

**Edit

So, after tearing my hair out, I decided to run a Cat 5 cable around 60 meters and connected it to the multi through the victron RS485 to USB lead.

I now have the TX/RX flasing on both the ET112 and the RS485 adpter, not continuously but in bursts, pause for a second, then another burst.

However....Still nothing showing up in energy meters!! How can I try and identify whats causing it not to show?

Hi all,

Read as many posts as I can, but nothing has solved my issue.

I'm using a multiplus II GX and an ET112.

Connection between the two via Zigbee.

At first i've been tearing my hair out thinking the Zigbees were not connecting. However, I have plugged the Zigbee USB into my laptop and it connected to the ET112 straight away using the UCS program.

Still won't show up on energy meters.

What else can I check?

Thanks in advance