I purchased DAXTROMN POWER 2XMPPT 140A 160A ON-GRID/OFF-GRID 10KW 10.2KW I connected it today.

Have questions:

1) Both controllers are working. I checked it by measuring it on the wires. But the information on the inverter display and the monitoring program is shown only if the panels are connected to the second PV.

2) For some reason, the controller strives to get the maximum current from the array of panels; as a result, the panels do not produce the usual 1.6 kW, but significantly less than 0.9 - 1 kW. Moreover, I noticed (not yet exact, there was only one experiment) if you turn off the network, the panels begin to produce 1.6 kW, as on the previous inverter. I can’t figure out what’s wrong, either the search for the efficiency point is not working or some setting is not set correctly.

3) I can’t enter the settings. According to the instructions, hold down the enter key for 3 seconds, nothing changes and nothing happens. I have a video I can send.

4) Do you have new firmware versions?

Help please 

Hello friends.

The situation is becoming a little clearer. The seller allowed me to open it, found a torn cable during assembly, re-soldered it and now it’s included in the menu.. The problem with the controller’s search for the optimal point remains, if you turn on the SBU mode everything starts working fine, i.e. the inverter begins to produce the usual 1.8-2 kW from the sun. At a voltage of 200V 9a. But as soon as you switch to SUB mode, everything comes back again, the output drops to 0.9-1 kW, the voltage becomes 100V 10.2A - some kind of crap. This device is already actively sold by various brands Victor Max, PovMR, Anern. There must be a solution to the problem with the efficiency of the MPPT controller. Help please. Where else can you look for useful information?

Hello, I have an inverter identical to yours which does not register the production from the PV 2 input, in the monitoring application but it appears on the display and I don't know what to do, maybe we can find other solutions or a software update.

Adrian

 

Hello, I have an inverter identical to yours which does not register the production from the PV 2 input, in the monitoring application but it appears on the display and I don't know what to do, maybe we can find other solutions or a software update.

Adrian

Adrian, thanks for your reply.

You are right, my application only shows data from PV2. From which input does your application display data? The display on the device itself also shows data from PV2. Do you have a problem similar to mine in SUB mode - a drop in power from solar panels or is everything working fine for you?

Hello ,
I can say that it works well, but the only problem is that it doesn't show the sum of the powers from PV 1 and PV2, I can see them on the display but I can't see them in the Solar Assistant monitoring application, except for those from PV 1, and displays data of a 5 kw inverter which I think is a clone. MPPT 1 and MPPT 2 I think are 5.2 kw each and so far I have only seen powers over 6 kw from 11 kw of solar panels on 3 strings 2x 8 x 450 watts on the south and 10x 320 watts on the west. I am looking for an electrical diagram or after the inverter is cloned.

Thank you Adrian

That is,
I have the same inverter with a single string of panels and it seems to work well in SBU but as the by-pass occurs and there is little sun or at dawn mppt is already activated at 50V and in this way absorbs about 4A / 5A from the battery with a maximum production of 50W :I drain the battery and have the BMS intervene or go into the cut-off.

It is a very strange behavior.

If in this situation I turn off the photovoltaic panels, the absorption from the battery is only 1.1A .

It appears that in by-pass to make mppt work it needs about 200W / 300W from the battery.

It makes no sense to produce 50W and waste 300W from the battery.

On 11/17/2023 at 10:34 PM, tistructor said:

That is,
I have the same inverter with a single string of panels and it seems to work well in SBU but as the by-pass occurs and there is little sun or at dawn mppt is already activated at 50V and in this way absorbs about 4A / 5A from the battery with a maximum production of 50W :I drain the battery and have the BMS intervene or go into the cut-off.

It is a very strange behavior.

If in this situation I turn off the photovoltaic panels, the absorption from the battery is only 1.1A .

It appears that in by-pass to make mppt work it needs about 200W / 300W from the battery.

It makes no sense to produce 50W and waste 300W from the battery.

Hello try this way

Charger source priority-solar priority

Max utility charge current-2A

 

На 20.09.2023г. в 23:11 iordan каза:

Здравейте,
мога да кажа, че работи добре, но единственият проблем е, че не показва сумата от мощностите от PV 1 и PV2, виждам ги на дисплея, но не ги виждам в приложението Solar Assistant за мониторинг, с изключване на тези от PV 1 , и показва данни на инвертор 5 kw, който мисли, че е клонинг. MPPT 1 и MPPT 2 мисля, че са по 5,2 kw всеки и досега съм виждал само мощности над 6 kw от 11 kw слънчеви панели на 3 струни 2x 8 x 450 вата на юг и 10x 320 вата на запад. Търся електрическа схема или след клониране на инвертора.

Благодаря ти Адриан

Здравей,намерихте ли решение на проблема ,моят е по абсолютно същия начин.

Edited January 29, 20242 yr by vankosolar
Error

hello, I sent an email to dextromn and they said that the control board needs to be replaced, I gave the address and they were going to send it for free. For 3 weeks I've been waiting for it to come with a shipment to Poland and from there they will send it to me. I solve it, I will post here how I solved it, until then I see that it works well because I have full sun and in the evening when it switches to batteries the fans work a little and stop and turn on later, during the day they run continuously as much as they produce.

Adrian

Hello, same problem here. In my case it is not only missing data, it is missing the power !!!. I have East-West 2.5-2.5kWp installation, total 5kWp. Since I apply this inverter I lost the second string. It is not working at all - 3 to 10W production!!!

I proved by applying to the first MPPT that the power is there, today the output went to 3.6kW, but once I distribute them back to each string on it's own mppt, the second one is shutdown. 

I wrote in whattsap to daxtromn, but so far I have no suggestion for solution

I hope somehow they come up to solve our problem.

 

Keep in touch guys!.

Hello,

anybody found solution described Mike23?

This is firmware or control card problem? 

Hello
I have a Daxtromm AGH 10.2 KW inverter, a clone of clones. I use the Dessmonitor application to monitor it. The problem is that it does not show information about power consumption from the network. Has anyone had a problem with this and what could be the reason? I warn you that I have already tried all possible combinations of settings and resets. Attached is a screenshot. Those from daxstrom do not answer whether this model has this or whether it is a defect.

 

Hello, I have this inverter too. Mine is working properly with both MPPT strings, though the strange thing is, that second MPPT isn't working as long the 1-th is not connected and working.

My inverter is equipped with RS485 BMS connection port. My issue is inverter<=> BMS communication via RS485 port. I use Seplos v2.0 BMS and cannot make it talk to this machine. Any Ideas ? Thank you in advance.

Hi, I have two of these, sorry I have no time to read this entire topic now, but let me say both of my inverters are working fine. 

 

However, when I got them initially I made a mistake of connecting both PV1 and PV2 in parallel to the same large array and back then it was behaving exactly like you describe. 

 

I didn't realise this model has two independent MPPTs and not just a single MPPT with two sets of leads (like some earlier models did). 

 

So once I've started using pv1 and pv2 as independent MPPTs it works fine. 

 

On the lcd I do get information for one or the other. It cycles depending on up/down press. 

 

VIA the rs232 (both the dessmonitor and my own software) there is only voltage for one PV input and total PV charging power available. There is no voltage on another pv input and no "amps per pv input". That is honestly not a big loss, because it is so horrible in measuring current (reporting 7a when there really is 1.5A) that the lack of it is for the better. 

On 2024/07/10 at 6:32 PM, Matronix said:

Hello
I have a Daxtromm AGH 10.2 KW inverter, a clone of clones. I use the Dessmonitor application to monitor it. The problem is that it does not show information about power consumption from the network. Has anyone had a problem with this and what could be the reason? I warn you that I have already tried all possible combinations of settings and resets. Attached is a screenshot. Those from daxstrom do not answer whether this model has this or whether it is a defect.

 

I'm not seeing the screenshot, but my unit also hasn't got the information about AC input power. Both on lcd and via the rs232. I get load power on AC output, but there is no way to see AC input (in consumption or export). 

On 2024/09/11 at 6:49 PM, Roci said:

Hello, I have this inverter too. Mine is working properly with both MPPT strings, though the strange thing is, that second MPPT isn't working as long the 1-th is not connected and working.

My inverter is equipped with RS485 BMS connection port. My issue is inverter<=> BMS communication via RS485 port. I use Seplos v2.0 BMS and cannot make it talk to this machine. Any Ideas ? Thank you in advance.

Do you have the right cable? I don't know the pinout of Seplos BMS, but I know the inverter's rs-485 plug uses first two pins of rj45 only. I believe pin 1 is A and pin 2 is B, but I'm not 100% sure it is not swapped. 

 

These are the pins that are usually white-orange and orange in typical straight Ethernet LAN cables. There is another standard where these pins are white-green and green. You can tell which you have by looking at what color is at the edge (white-green or white-orange).

 

Comms wise, the inverter runs at 9600 and it has 3 protocols to choose from. I'm using pylontech (with own software battery emulation) but there are two more to choose from. If you can find the BMS pinout and to set it to 9600 bps perhaps it will work with one of the three. Maybe the BMS has a protocol choice too? 

On 2024/09/18 at 7:59 AM, luk88 said:

Do you have the right cable? I don't know the pinout of Seplos BMS, but I know the inverter's rs-485 plug uses first two pins of rj45 only. I believe pin 1 is A and pin 2 is B, but I'm not 100% sure it is not swapped. These are the pins that are usually white-orange and orange in typical straight Ethernet LAN cables. There is another standard where these pins are white-green and green. You can tell which you have by looking at what color is at the edge (white-green or white-orange).

Comms wise, the inverter runs at 9600 and it has 3 protocols to choose from. I'm using pylontech (with own software battery emulation) but there are two more to choose from. If you can find the BMS pinout and to set it to 9600 bps perhaps it will work with one of the three. Maybe the BMS has a protocol choice too? 

Hi Luk88, thanks for hints. Indeed, I may have wrong cable wiring, as Seplos BMS docs say RS485 wiring is: Pin 1/8 is B, Pin 2/7 is A, Pin 3/6 is GND. So maybe I just need to cross  lines 1 with 2 to have it working.

Regarding the RS485 protocol on iverter's side, I'm confused, where is this to be set in the menu. I guess it may be in the 5th menu item *battery type". There are few strange items, most of them not covered in the manual. They come as follows: AGN, FLD, USE, LIB, LIC, LIP, LIL. First 3 are obvious. but last 4 are enigmatic and may mean different BMS connection protocols. I tried all combinations of those on inveter's side along with choosing different protocols on BMS side. On Seplos BMS side are : Pylontech, Growatt, Voltronic, Sofar, Luxp. 

If anyone knows, what those last 4 battery type abbreviations mean, please share, as it may help get through this Daxtromn's riddle.

Above all, I would like to know the true name of these invertes's manufacturer. I would like to ask him directly those questions. Daxtromn's office didn't answer any of my emails. Bustards.

Last, but not least. Indeed, neither Inveter's display nor Dessmonitor data logger do not provide data/stats for power consumed/exported from/to utility network. What a pity.

I tried to use 1 and 2 pins of RS485  port and LIL for 05 parameter and it works for me.

On 2024/09/25 at 7:41 PM, ihorhome said:

I tried to use 1 and 2 pins of RS485  port and LIL for 05 parameter and it works for me.

Thank you for your input.

Tell me please, are your signal cable lines (1,2) crossed or plain on both ends?
And what is the baud rate set on your BMS's side? (Inverter doesn't show that)/
What's your BMS's brand and type?

My Seplos BMS v2 uses 19200 bps rate by default and it seems it cannot be changed by supplied software (Win based BMS Monitor or Android's BT based app).

Indeed, I have found a YT tutorial for PowMr inverters, which seems to be useful:

https://www.youtube.com/watch?v=tTxPaQ5EQOo

According to that, 5th menu item (Battery type) selection means:

* AGM - Absorbeng Glass Mat
* FLD - Flooded (Acid-Pb) battery 
* USE - Custom Battery Option
* LIB - General lithium battery, no protocol
* LIC - PACE 232  protocol
* LIP - PACE 485 protocol
* LIL - PYLON 485 protocol

I wonder if RS485 bps parameter on inverter's side can be changed?

Edited September 29, 20241 yr by Roci

On 2023/09/20 at 11:11 PM, iordan said:

Hello ,
I can say that it works well, but the only problem is that it doesn't show the sum of the powers from PV 1 and PV2, I can see them on the display but I can't see them in the Solar Assistant monitoring application, except for those from PV 1, and displays data of a 5 kw inverter which I think is a clone. MPPT 1 and MPPT 2 I think are 5.2 kw each and so far I have only seen powers over 6 kw from 11 kw of solar panels on 3 strings 2x 8 x 450 watts on the south and 10x 320 watts on the west. I am looking for an electrical diagram or after the inverter is cloned.

Thank you Adrian

Hello everyone, after almost a year of searching for the problem above, today I found the solution and it works perfectly, you just have to change the connection mode from the voltronic model to the sumry model and it reconnects and correctly displays the products of the 2 MPPT and their sum .
This remark may help others, no cable is changed, nothing works as if it were voltronic, but it is not.

Edited October 2, 20241 yr by iordan

On 25.09.2024 at 19:41, ihorhome said:

Próbowałem wykorzystać 1. i 2. pin portu RS485 oraz LIL dla parametru 05 i u mnie działa.

Hi, could you give me a sketch of how to make this cable, for example, Plug A Pin 1 ------- Plug B Pin?
Plug A Pin 2 ------- Plug B Pin?
Plug A Pin 3 ------- Plug B Pin?
Plug A Pin 4 ------- Plug B Pin?
Plug A Pin 5 ------- Plug B Pin?
Plug A Pin 6 ------- Plug B Pin?
Plug A Pin 7 ------- Plug B Pin?
Plug A Pin 8 ------- Plug B Pin?
If it worked for you, it will work for me too

Στις 30/9/2024 στις 7:57 ΜΜ, ο iordan είπε:

Γεια σε όλους, μετά από σχεδόν ένα χρόνο αναζήτησης για το παραπάνω πρόβλημα, σήμερα βρήκα τη λύση και λειτουργεί τέλεια, απλά πρέπει να αλλάξετε τη λειτουργία σύνδεσης από το μοντέλο voltronic στο μοντέλο sumry και επανασυνδέεται και εμφανίζει σωστά τα προϊόντα του 2 MPPT και το άθροισμά τους .
Αυτή η παρατήρηση μπορεί να βοηθήσει άλλους, κανένα καλώδιο δεν αλλάζει, τίποτα δεν λειτουργεί σαν να ήταν voltronic, αλλά δεν είναι.

Έχω αυτό το πρόβλημα. Εξηγήστε λεπτομερώς πώς γίνεται αυτό.

On 2025/01/27 at 5:26 PM, John p said:

Έχω αυτό το πρόβλημα. Εξηγήστε λεπτομερώς πώς γίνεται αυτό.

Hello, I use Solar Assistant for monitoring to which I connected the inverter via an RS 232 cable + USB converter. For batteries I have 3 pieces each with BMS or mounted on a bus bar and for communication with Solar Assistant I have 3 RS 485 to USB converters all connected to a USB hub which is connected to Raspberry on a USB port. In the Solar Assistant application in the settings page for the inverter model it changes to Sumry and it works fine.

Who know the correct wiring for the cable from the inverter to the battery rs485 connector

I would be grateful if someone could help

On 2024/09/11 at 7:49 PM, Roci said:

y issue is inverter<=> BMS communication via RS485 po

 

On 2025/02/16 at 2:07 PM, iordan said:

Hello, I use Solar Assistant for monitoring to which I connected the inverter via an RS 232 cable + USB converter. For batteries I have 3 pieces each with BMS or mounted on a bus bar and for communication with Solar Assistant I have 3 RS 485 to USB converters all connected to a USB hub which is connected to Raspberry on a USB port. In the Solar Assistant application in the settings page for the inverter model it changes to Sumry and it works fine.

Can you explain the wiring for RS232 to RJ45 and RS485 to RJ45 please?