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Solaredge Modbus current sensor

Hello community,

I am planning a fresh installation with Mulitplus II 5000 and 48V battery with JK BMS.

This storage system will be AC coupled to my Solaredge SE15K inverter which already has an integration of a current measurement modbus sensor.
At the moment my home assistant gets all the information from inverster and current measurements via modbus.
Is it possible to also integrate these information into the Multiplus or GX?
I want to avoid a second current measurement because it is expensive and there is no space.
Normally this should be obsolete.

Which measurement would be recommended EM24 or current transfomer clamps?

Hope anyone can help me.


Best Regards,

ds1707 asked
shaneyake commented ·

2 Answers

AC - AC coupling - what is the max. load I can couple ?

Dear all,

I am using 3 x MultiPlus-II 48/3000/35-32 with an AC-AC coupled Solaredge 17kWp inverter.

The max. output of the Solaredge inv. is 9500 W (reached only once in June 2021) due to high variation of cardinal directions and panel angels.

Is it acceptable to have these two AC-AC coupled or could this already be too much for my Victron Setup ? What can I do to avoid damage ?



clarissa1289 asked
shaneyake answered ·

1 Answer

Frequent disconnection of solaredge inverter with GX device

i have a multiplus 2 setup with solaredge pv inverter. The venus gx does read out the solaredge pv data via modbus TCP. I use fixed ip adresses, and the gx and the solaredge inverter are on the same switch. It works sometimes great, but often it looses the connection. I tried different things to get back the solaredge data on the venus gx, which sometimes help like: restart the gx, cut off the grid from the solaredge inverter, delete manuale the ip adress at the gx and add it again. Sometimes it works for a week and suddendly the data is again missing. Sometimes i get the pv data only for some hours or minutes. The settings on the solaredge should be right (ID etc.). I have a second install where it doesnt loose the pv inverter, only a very few times.

thank you for your help!

gnagflow asked
suggarman answered ·

7 Answers

Need some help defining "Frequencies" in ESS for SolarEdge PV inverter

I could use some help defining the disconnect frequencies in ESS for my PV inverter shown here; any help is appreciated!:


I live in the US, my inverter is 60Hz first off, these are default values I have not modified yet. My Inverter is a SolarEdge HD10000-H US. Active Power control via frequency is defined here in the manual, and can be set by the user:


It would seem that "P0 in my inverter relates to "The solar converter will start reducing its output power at XX Hz", I am guessing that P1 would be the next setting "Output power will be reduced to minimum when frequency is at XX Hz".. I am not sure what to enter for the final disconnect value though. The full manual on Power Control can be found here,

Can anyone provide any recommendation as to how I should configure this in ESS and which values should be selected for P0 and P1 in my inverter?

ee21 asked
Alexandra edited ·

2 Answers

Can Color GX use Wifi for remote VRM comms and wired LAN for direct comms to SolarEdge HD Wave

My system has a Multiplus 2 with color GX and SolarEdge HD wave solar inverter.

I can successfully connect to remote VRM using the recommended Asus USB-N14 Wifi router.

I can also conect the SolarEdge to the Color control via wired LAN.

Can I enable both interfaces to work at the same time. The Wifi is intermittent at this location so I want to use the simple (reliable) LAN connection to the SolarEdge and then use the unreliable Wifi for remote VRM updates.

Is there only one ethernet stack in the Color Control which can only be switched to either Wifi or LAN or is there a way I can enable both, but with only the wifi being used for remote VRM use?

Regards - Jeremy Dale

j-n-dale asked
av1um edited ·

1 Answer

In ESS when batteries are full, the mppt throttles and does not help with loads

System info:

3x quattros set for 3phase

1x Smartsolar mppt 250/100

1x SolarEdge 3ph 27.6 ac-coupled to AC1-out

ESS assistand running

Mode Optimized (with battery life)

Issue 1 - Mppt only charges till battery is full then throttles, not assisting with loads

Issue 2 - SolarEdge displaying as a device but 'not connected'

Modbus TCP enabled, port 502, id 126, buad rate set 115200

nic asked
Paul B answered ·

1 Answer

SolarEdge and Victron Battery Discharge when PV available


We have a 3ph setup with 3 x Multiplus II 5kVA, 15kWh battery and 1 x 17kW SolarEdge Inverter connected on the AC Output cable of the Victrons.

The Carlo G meter is just after the main breaker, the SE CT's are just after the Carlo G meter.

When I set the ESS to charge the battery, the SE obliges and powers in PV to supplement loads. If I change the ESS to 'optimized with or without battery life' and the SOC limit is less than the current SOC, the battery starts to discharge, regardless of how much PV is available and the SolarEdge inverter goes into zero production.

Does anyone know how to make sure this does not happen. for some reason the battery discharge is happening before checking if the SolarEdge is able to product power.

Thanks in advance.


greg-walton asked

0 Answers

multiple solaredge inverters with multiplus 2

Good Morning,

I have a system with 1 Solarege 3,5kW and Multiplus 2 with battery. All works well together. I read the solaredge PV data into the Victron VRM (Solaredge Register 811) with TCP Modbus like explained by Victron.

But now I want to install a second Solaredge Inverter (3 Phase). How can I get the second PV production value into my Victron sytem, either the sum of both, or each one?

Victron installation manual only offers to read out the device ID 126. Is it possible to add addtional pv production systems? I think this option will be interesting for many people.

thank you.


gnagflow asked
stenis answered ·

4 Answers

Can you use Victron’s products to add 48-V battery backup to an existing 220V, 50Hz, 3-phase, grid tie SolarEdge installation, and provide energy to the batteries when the grid fails?

I tried finding a suitable solution for this problem; however, I was unable to find one.

The problem presents itself when:

1- you have a 3-phase, 50Hz, electrical SolarEdge installation with a SE inverter and optimizers.

2- you want to add a 48-V battery storage only to one phase.

3- you want the existing PV array to feed the battery in case of grid failure.

4- you do NOT want to add additional solar panels or generators.

5- the capacity of the existing SE inverter is larger than Victron’s inverters.

It is too difficult or too expensive or both to solve this problem with Victron products.

I found a SE note suggesting solutions for this problem using a second inverter ONLY from SE to do DC coupling or AC coupling, or to replace the existing SE inverter with a newer inverter from SE compatible with optimizers and able to store energy in a 48-V battery.

However, these solutions, sadly, will work only with LG or SE battery systems. This limits tremendously the types of battery chemistries and options of battery manufacturers compatible with the newer SE inverter.

blue-sails asked
blue-sails edited ·

2 Answers

Feedback on Victron/Solaredge documentation


Can I suggest the following improvements are made?

1) Section 3.3 images to not match text. Text instructions P0 to be set to 50.5Hz, images instruct 50.2Hz, not clear which one is correct. Same problem exists with the 2nd(!) iteration of section 3.1 that is below item 3.3. Perhaps this iteration of 3.1 should be relabeled to 3.4 or 3.2.1 something?

2) Figure 5 & 6 indicate you can link directly from a Multiplus II K1 relay to the Solaredge PRI connector and shows a picture of a Multiplus II Problem is K1 is not a relay in the Multiplus II, you need to use the AUX relay instead. It's also not obvious that the AUX relay is the Primary Programmable relay (you would assume it's the AUX1 relay) when programming the assistant.

3) consider linking to the Solaredge documentation for the feature at

4) Finally a section should be added about testing and how to see if its working at the solaredge end. The trick here is that the country code on the Solaredge should change from whatever it is configured to when you trigger the relay. Eg in my case it changes from "Country: AUS" to "Country: DG" You should short out the pins on the solaredge and check that the country changes, then release them (and go back into the screen that shows country) and check that it changes back. There are some useful details/images you may want to lift from the solaredge pdf in 3) page 9, section Alternative Power Source mode – Self Test


daryl asked
mvader (Victron Energy) answered ·

1 Answer

Is Off-Grid AC Coupling any good with Fronius or Solar Edge?


From what I can tell Frequency shifting isn't a perfect solution for an off grid ac coupled solar control.

Does Victron support both Solar Edge and Fronius AC coupling options 100%? Are there any limitations to frequency shift control? Other than the 1:1 rule.

Is Selectronic Frequency shifting (generic AC coupling) more advanced than Victron? I heard Victron was 25% steps up or down in power.

Isaac Shannos asked
Guy Stewart (Victron Community Manager) answered ·

1 Answer

PV Inverter on AC-Out, connected but not showing up/no AC Load total shown

Solar Edge PV inverter connected to the AC-Output side of my split-phase+parallel Multiplus installation. Monitoring is working, you can see the device pushing updates every couple seconds:



But the AC Loads totals are obviously incorrect, and the inverter is nowhere to be found... There is about 2000W draw on the Loads side:


I've tried rebooting my PV inverter, and VenusGX several times, tried to rediscover the inverter but couldn't really find a way to remove it - or my old inverter. Is it time to reset the VenusGX and start fresh or something like that?


PV Inverter is the newest "CPU" version, 4 that is controlled via SetApp on smartphone, and has no LCD screen or buttons whatsoever.


ee21 asked
ee21 edited ·

3 Answers

documentation "Integrating with SolarEdge" work around


in the application note "Integrating with SolarEdge" it is written :"Note: APS mode is mandatory for systems requiring both zero feed-in in on-grid mode and frequency shifting in off-grid mode."

  • I can confirm that for SetApp inverter with firmware CPU 4.9.33, (DSP1 1.0.1036, DSP2 2.0.910) and country settings Spain & Italy when in APS-mode the settings in corresponding P(f) are being ignored, no power reduction on rising frequency occurs.

  • For country setting Spain: Power Control-->Active Power: P(f) is not available

Frequency shifting in off - grid mode is desired and I get a P(f) reduction when using country "Italy" according to the defined ramp P(f) in "Active Power". However there is a hysteretic lock, frequency needs to fall back to 50Hz again + some hold time until a new reduction cycle is started. (A wakeup gradient to improve system stability is defined though: (200ms))

@fjlacock is this hysteretic behaviour of P(f) also the case when in APS -mode? Apart from the extended trip values in APS mode, is there a difference between P(f) in that mode and “P(f)” in “Active Power” + default country mode?

Thank you!!

iertigre asked
fjlacock answered ·

1 Answer

AC Coupling with Solaredge, requirements for pure off grid


currently I am setting up an off grid PV-system and try to integrate AC coupling with Solaredge SE6000H and Quattro 48/8000. (Battery is BYD premium LVL)

I followed the instructions in Victron documentation: Integrating with Solaredge

The only difference is: There is no public grid available and zero feedback is not required. Therefore no Solaredge Energy Meter is installed.

My question: is the use of the Energy Meter mandatory for the correct working of frequency based power reduction by the SE inverter?

Which country settings (on the SE inverter) did you use in your test environment?

I ask, because my test run failed.

First I used "Spain" as country setting and noticed, that in the SetApp Power Control-->Active Power the P(f) menu was missing. I reconfigured country settings this time to Czech Republic 16A and was curious to see that P(f) was back again.

(Although I doubt, that this setting is at all relevant for my setup as I will not be working in that specific country mode, but in APS (Alternative Power Source) mode.

But to follow the documentation I set P(f) in both menus: In Power Control-->Active Power-->P(f) and Power Control → Alternative Power Source → P(f) and ranging P0 100%@ 50.2Hz and P1 0%@ 51.2Hz.

On Victron side I use the assistant PV-Inverter and with the same tresholds and disconect @ 51.5 Hz.

However the test run failed. (And yes, SE status said I was in APS mode). No power reduction on SE-side happened. Victron modulated the frequency up to 51.5Hz and luckily and thanks to the relay assistant and SE on AC-Out 2 it got thrown off when BatV got too high.

Thanks for any inspiration!!

iertigre asked
iertigre answered ·

2 Answers

Add SOlaredge PVinverter to VRM

Hi everybody,

I tried everything I could think of to add my solaredge PV inverter to the devicelist in the VRM portal, but without result. The Solaredge would be compatibel with Victron but I don't get it to work. What do I miss.

Today I installed a switch to be sure both the inverter and the Venus are in the same network.

Anyone who can help me??

Kind regards, Henk

henk-volkers asked
jbakuwel answered ·

1 Answer


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