TomasCrespo

Hi! I'm using ICC as monitoring software. The graph is from emoncms, with the data that icc provides. The figure is pvwatts1, there is also a pvamps1, but I'm not logging that one. I'm not sure if the value of pvwatts1 in ICC is exactly the same showed in the Axpert LCD screen (PV Watts input) but I will check. Below a graph in the night, when thee is no solar production. You can see batterywatts instead pvwatts1. I think in this case the data is OK.

HI, I have a similar problem. I think my VM III is not reading PV input values correctly. However it is working OK. I am offgrid, any mains neither generator. Only 8x330w panels and one Pylontech US2000B module. My load is almost constant, around 150w, but when sun is up my inverter says that he is catching 0w from the battery and 8w from the pv solar panels. All my loads are working perfectly. It is not a lag. This behaviour is the same the whole day. Pv Watts are much lower than loads and all works. A imposible thing, so the pv Watts read should be wrong Remember, there is not any other source of energy. No grid,and battery is aporting 0w

They replaced the unit. They said that it wasn't possible with only a firmware update, they said that there were some hardware changes, but I doubt that there are hardware differences, I think is only firmware. Anyway, I can't observe any advantage of having the Pylontech compatible firmware or not. My main concern was about the "cut voltage" parameter, and it has the same values in both firmwares

Good idea. I suppose I will do that if there is no easier option

I take the opportunity to ask one thing My scenario is a totally isolated cottage, so I have no grid, neither generator. I would like to stop the system when batteries are at 50%. I have tried the "Change to grid" option in ICC solar, but when I reach 50% of SoC nothing happens. I think it doesn't change to grid, because there is no grid. How could I make the system stop (inverter off or standby) when batteries are at 50% (or any other value of SoC)? I think my only possibility is using cutoff parameter on inverter, but it only reach as much as 48v, and I don't know (yet) what SoC is equivalent to 48v Some idea?

I'm trying to determine if there is any advantages of having the Pylontech enabled firmware (once you have ICC). Now the inverter know the right SOC, but... for what? This is useless The real advantage would be that the inverter read the battery voltage through the BMS instead of calculating by itself, because there is some parameters related with the battery voltage: * Change to grid * Change to solar * Battery cutoff I'm not sure about if the inverter reads the battery voltage through the BMS or not. I'm testing yet. I have read in some post that some of you are using floating voltages below the recommended by Pylontech. If you select Pylon in Battery type, you couldn't change the floating voltage. Obviously you could select "user define" in battery type, but then you will lose BMS communication... 🤔 Or not? I will test it too

The black one is the one which works. It came with the inverter. It's connected to the RS485 port of Pylontech The white one is a CAN bus that came with the Pylontech, I think its for other litium batteries.

Hi again, I finally got my inverter replaced Now I have one VMIII dated 2018/11/01 but with Pylontech enabled firmware. I can choose Pylon on menu 05. I making my first tests, but at least now SOC is informed right on LCD screen. If you select Pylon in parameter 05 (battery type) some others parameters are not able to modify, like bulk charge or flotation voltage. That's logic, but I don't understand why the parameter "cut-off voltage" is disabled too. I would like to cutoff the battery at an higher voltage. So, if someone has any question about an inverter with this firmware, perhaps I could help

I've been speaking with the seller about a firmware update, but finally he has told me that is not only the firmware, there is also some hardware modifications too in the > 2019 February models. So, the only solution is send the full inverter for a replacement

That's sure, but... Where will came from the voltage readings? Will be calculated by the inverter? Or will be calculated by Pylon and read by the inverter by BMS? I think that's the key. If the voltage remains read by the inverter (inaccurate) the Pylontech enabled firmware is not worth. If only reads the SoC by BMS... for what? There is no options to take actions according to the SoC

In my tests the inversor see an high drop in battery voltage when there is a load, so it thinks battery is at 50% when actually is at 100%. My main worry is about the inverter making decisions according to the battery voltage it see. But... if I had pylontech enabled firmware... 🤔 The options to change from battery to grid would be the same options, it is configured at a specific voltage. Do the inverter have the right voltage then? Or only it will have the right SOC (%)?

As you know in VMIII the LCD its detachable. Is there the firmware? I mean, if I send them only the removable LCD screen, could they update the firmware?

Voltronic? I dont think they have reply an email in their whole life 😁 I live in Spain. There is no problem about getting a refund. The seller has no problem on that. I am going to use the inverter and Pylontech with ICC, so I don't know if the communication between inverter and Pylontech will be important. In my setup ICC will read the SOC of the Pylontech directly from the Pylontech console port, and make changes in the inverter according to these reads. Do you think in this scenario a inverter with Pylontecth enabled firmware will apport anything? Thanks

Hi again! White cable it is not a Ethernet cable, that's sure (I'm IT). It has differents pinouts in each terminal, and it is marked, one terminal for inverter and one for batteries, so... it is RS485 or CAN. In Pylontech user guide (from the internet) I see this pinout for RS485 (6 wires) and CAN (3 wires) But in the Pylontech user guide I got with my batterie I have this pinout for the same page: As you can see RS485 its not doubled. Anyway I have tried to connect the inverter and Pylontech in the specified way at Axpert manual: DIP 1 on (with only one battery) Connecting cable in RS485 Pylontech port and inverter BMS port Turning on Pylontech battery Turning on inverter But there is no option "Pylontech" in menu "05 Battery Type", and the SOC in the inverter does not match with the SOC in the Pylontech (when there is a load), so... there is no communication. Anyway, I have tried with both cables

Hi! Both cables came with the inverter box. The seller told me that if in the box I got these cables is because the inverter has the Pylontech update. Both cables are RJ45, but different pinout. One of them (the white) is CAN, obviously not for Pylontech, and the other one I suppose is RS485 for Pylontech. I attach pics of pinout. The maker date of the serial number is 2018/09, but I bought (and the seller order to the maker) only one week ago. However I have no "Pylontech" option in menu "05 Battery type". Is there anyway of show firmware version (by console or with ICC perhaps)? In update Axpert manuals there is an appendix at the end showing how to connect the Pylontech to the inverter. It has to be by RS485, but it's not clear for me if I have to put on switch 1 of the DIP of the batterie. Anyway, I doubt that 05 option appears when I connect the battery correctly. I think is an outdated firmware

Hi Coulomb, I have just bought a VMIII. The seller told me that it had Pylontecth support in firmware, but in battery menu I only have AGM, flooded and User define. Is there any way of knowing if it has the Pylontech compatible firmware? In the box there is two cables, both of them with RJ45 terminals, but different pinout. I suppose one is CAN and the other is RJ485 (photo attached) Could it be that specific litium options are visible only if you connect the appropiate cable and start the batteries first? Or could it be theres isn't any menu option about litiium batteries? How do I know if my firmware is the one with Pylontech compability?

Hi! I have a doubt about the detachable lcd screen of new Voltronic Axpert inverters. It can be detached and put in other place through a UTP cable (RJ45). My doubt is if that cable could travel trough a internet switch and the screen will continue working. Has someone tried it? Thanks

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