Good day Everyone.

I bought a Synerji 3k inverter a while back on a special.

I've finally saved enough money to buy Solar panels. I've installed 10 x 460W 41.3V 11.13A STC (or NOCT is 347W, 39.1V 8.89A). I've got 2 x 102AH lithium Iron batteries.

I'm trying to get the solar to supply power to some of the items in the house (fridges, PC, lights and internet) during the day and during the night if there is load shedding we just run the lights and internet off the batteries. I've sorted this out using relays and Home Assistant.

I'm having the following issue. It doesn't look like the inverter is supplying solar power to the load first. The batteries are taking a hammering while the solar just idles.

I've set up setting 1 for [sol] {solar energy provides power to the loads as first priority, but it looks like the batteries supply the loads and not the solar. (I've included pictures).

When the mains is back the Solar just seems to charge the batteries and doesn't supply the load anymore.

I've read the manual hundreds of times and gone through the settings with a fine toothed comb but I can't figure out how to get this to work.

Any help will be appreciated.

Anyone have any ideas?

8 minutes ago, ANewham said:

Anyone have any ideas?

Hi @ANewham, ok so the fact that the solar does charge the batteries, proves that  it works.

Now when the battery provides all the power to the loads, and solar nothing, can you report what the solar voltage and solar amp readings are on the display. 

 

Edited March 15, 20233 yr by BritishRacingGreen

2 minutes ago, BritishRacingGreen said:

Hi @ANewham, ok so the fact that the solar does charge the batteries, proves that  it works.

Now when the battery provides all the power to the loads, and solar nothing, can you report what the solar voltage and solar amp readings are on the display. 

 

@Coulomb we know you are inundated, but  does this fault or config mode make sense to you? 

Edited March 15, 20233 yr by BritishRacingGreen

2 minutes ago, BritishRacingGreen said:

@Coulomb we know you are inundated, but  does this fault or config mode make sense to you? 

Ooh, I am making a bad assumption that this is a Voltronic brand. Well have find out first. 

5 minutes ago, BritishRacingGreen said:

Hi @ANewham, ok so the fact that the solar does charge the batteries, proves that  it works.

Now when the battery provides all the power to the loads, and solar nothing, can you report what the solar voltage and solar amp readings are on the display. 

 

The battery is supplying 43A to the load at 25.3V and  the solar is supplying 19.9A at 25.5V

2 minutes ago, BritishRacingGreen said:

Ooh, I am making a bad assumption that this is a Voltronic brand. Well have find out first. 

It's a Synerji brand from what I read on the Forum is an Axpert clone

4 minutes ago, ANewham said:

The battery is supplying 43A to the load at 25.3V and  the solar is supplying 19.9A at 25.5V

Thanks and what is the load power during that instance.? 

6 minutes ago, BritishRacingGreen said:

Thanks and what is the load power during that instance.? 

I didn't check at the time and I'm currently in Namibia for work so can't look right now.

But from the pictures it looks like maybe about 1.5kW

20 minutes ago, ANewham said:

It's a Synerji brand from what I read on the Forum is an Axpert clone

I bought my Synergji from HERHOLT'S and they got it from manufacturer Voltronic. I don't think Voltronic is selling competitors clone. Therefor Synergji is a Voltronic rebrand as is Axpert. As a matter of fact they are identical with Axpert.

Edited March 15, 20233 yr by Beat

On 2023/02/25 at 9:03 PM, ANewham said:

I've finally saved enough money to buy Solar panels. I've installed 10 x 460W 41.3V 11.13A STC ...

Wow, that's 4600 W nominal solar panel power. Are all 10 panels in parallel? I note that your inverter appears to be a PWM model, with 70 VDC PV max. But anything much more than about 35 V is a waste, since the panels will be connected across the battery.

Also, it's rated for 50 A @ 25 V solar charging (the 80 A maximum charge current mentioned in the label seems to be 50 A solar charging plus up to 30 A utility charging). So the solar charger can only handle about 1250 W. Your pass transistor is only rated for 50 A, yet your PV (if connected 1S10P) would be capable of at least 110 A. Even if it's connected 2S5P (wasting half the potential panel power), you'll still have well over 55 A available under ideal solar conditions. So I'm wondering if the solar charger is not turning on because it finds too much current. Though I think that should provoke a fault code. I don't know the Synerjis, except that they are quite Voltronic-like.

Being a PWM model (assuming I'm right), the firmware has limited control over how much solar current is used. My guess is that you have a severe mismatch between the panel configuration and your inverter, so you're only getting a small fraction of your available solar power. It may appear to work OK during the day because the loads are light then.

4 hours ago, Beat said:

I bought my Synergji from HERHOLT'S and they got it from manufacturer Voltronic

I find that hard to believe (that Herholt bought Synerjis from Voltronic).

4 hours ago, Beat said:

Therefor Synergji is a Voltronic rebrand as is Axpert. As a matter of fact they are identical with Axpert.

That can't be right. The display is yellow; Voltronics (in that sort of model) are blue. Also the display icons are different. I don't believe that Voltronic would supply a different display, although they do for Inverex, so I suppose it's possible. But I believe that the settings are quite different for Synerjis compared to Axperts, so they're not identical, like Mecer and Kodak.

Chris Hobson did a video review of a Synerji years ago, you should be able to find his original post with more details. He found that the Synerji at the time had numerous odd behaviours, confusing and different to Axperts. They may have changed over the 5 years since then, of course.

20 hours ago, Coulomb said:

That can't be right. The display is yellow; Voltronics (in that sort of model) are blue. Also the display icons are different. I don't believe that Voltronic would supply a different display, although they do for Inverex,

The display of my Synerji MKS 5K is blue and has the same icons as Axpert. Firmware is 74.40 and the manual is a copy-paste of the Axpert manual. When I posted the specification label you analysed it as a genuine Voltronic.

Edited March 16, 20233 yr by Beat

3 hours ago, Beat said:

When I posted the specification label you analysed it as a genuine Voltronic.

My apologies, I had forgotten that. Your Avatar does look familiar.

My guess is that Synerji, like Easun and possible some Growatt and TheSunPays inverters, were caught stealing Voltronic designs and firmware, and have been forced to become legitimate resellers or licensed manufacturers using genuine board layouts, tooling, test procedures, etc.

But that means that some older Synerjis, EASuns, etc are still out there that are blatant clones. I'm guessing that yours is from the legitimate era, and the OP's is before that in the clone era.

37 minutes ago, Coulomb said:

and have been forced to become legitimate resellers or licensed manufacturers using genuine board layouts, tooling, test procedures, etc.

Interesting, they came off lightly for what is downright criminal  theft. 

Edited March 16, 20233 yr by BritishRacingGreen

So if I get another Inverter with the same specs and run it in parallel with my current setup?

 

Split my solar panels s1p5 for about 50A each and then combine my AC outputs in my mini DB

18 hours ago, Coulomb said:

My guess is that Synerji, like Easun and possible some Growatt and TheSunPays inverters, were caught stealing Voltronic designs and firmware, and have been forced to become legitimate resellers

What might have happened is that originally they rebranded from a clone manufacturer. When they became aware of too many problems they switched to rebrand Voltronic.

18 hours ago, ANewham said:

So if I get another Inverter with the same specs and run it in parallel

As long as it's a genuine Voltronic, yes. But I note that "with the same specs" is trickier than it sounds. You need to know:

* Can your existing inverter be paralleled?  All the VM series are not parallelable at all, and some VM models look very similar to some MKS models. It's mostly 48 V models that can be paralleled, though there are a few 24 V models that can parallel.

* Is it a Voltronic Axpert? The resellers can name their brands and models whatever they like.

* Is it the right series (Max MKS VM etc).

* Is it the right subseries? E.g. MKS IV, or Max 8kW?

* In some cases, is it a Twin or a Duplex model? That changes the firmware, though it may not change the parallelability; I'm unsure on this as yet.

* In some case, you have to know if your existing model is a 64 V model or a 58.4 V model. Most recent models are (sadly) all 64 V, so that makes it slightly easier, unless your existing model is 58.4 V. You can tell by the maximum voltage that you can set the bulk or float voltage setting to, but of course that doesn't help with the new machine you're considering buying. Occasionally the "64 voltness" is indicated on the label or in the model name, but often it is not. All Max and King models are 64 V.

* Is it a compatible firmware? Usually the major firmware version numbers have to match, but sometimes you need to know that 90.06 is actually compatible with 72.66! I try to help with this, in my What Axpert firmware is that? page.

* Is it a 2809 chip or a 28066 chip? Fortunately, you CAN mix these in a paralleled set, though having mixed DSP chips makes it harder to know if your firmwares will be compatible.

It's unfortunate that all these barriers exist, because for most people, they can't or don't want to start with the full system, but start small and expand as needs and confidence expand.

17 hours ago, Beat said:

What might have happened is that originally they rebranded from a clone manufacturer.

Yes! That actually makes more sense.

Although if they changed from clone rebadging to genuine rebadging, I guess that means that they might switch again to another clone maker if the new clone maker makes the right promises, and it cheaper (cheep! 🎵) than Voltronic.

Voltronic might have something to say about that though. But maybe they don't have the legal might that I imagine they do.

On 2023/03/15 at 11:33 AM, ANewham said:

The battery is supplying 43A to the load at 25.3V and  the solar is supplying 19.9A at 25.5V

Do you have setting 5 set to LBU?

And setting 1 on SUB then it will help supply load from eskom when solar isn't enough instead of battery

Play around with setting 1/5/10 until you get the desired result

 

Edited April 27, 20233 yr by Leondavibe

On 2023/02/25 at 1:03 PM, ANewham said:

Good day Everyone.

I bought a Synerji 3k inverter a while back on a special.

I've finally saved enough money to buy Solar panels. I've installed 10 x 460W 41.3V 11.13A STC (or NOCT is 347W, 39.1V 8.89A). I've got 2 x 102AH lithium Iron batteries.

I'm trying to get the solar to supply power to some of the items in the house (fridges, PC, lights and internet) during the day and during the night if there is load shedding we just run the lights and internet off the batteries. I've sorted this out using relays and Home Assistant.

I'm having the following issue. It doesn't look like the inverter is supplying solar power to the load first. The batteries are taking a hammering while the solar just idles.

I've set up setting 1 for [sol] {solar energy provides power to the loads as first priority, but it looks like the batteries supply the loads and not the solar. (I've included pictures).

When the mains is back the Solar just seems to charge the batteries and doesn't supply the load anymore.

I've read the manual hundreds of times and gone through the settings with a fine toothed comb but I can't figure out how to get this to work.

Any help will be appreciated.

In that image the solar is supplying the load it is just supplementing from  battery if you use it on other settings it can supplement from eskom instead of the battery

Sol means eskom is left out of the picture 

 

 

 

Sorry I'm new to this and also looking at synerji 3kv from northside electrical, my work had a growatt... Am I understanding his sol mode to, when Eskom is off, prioritize solar to load, and assist with batteries, and when Eskom comes on, prioritize solar to charge with Eskom handling load... Im assuming till battery meets a minimum set somewhere, then will allow solar to assist with load... 

That would be similiar to what our growatt did, to ensure that the batteries were charged as fast as possible for usage during the evening... 

 

If there was no solar(night) would Eskom supply load and charge batteries

This would seem ideal and what I'm hoping for...