ascheff

Brilliant, thanks @Coulomb, the issue is sorted. My setting 12 was 23v (half of your default on my 24V system). I tried setting 10 on Online earlier today, and then didn't seem to make a difference, but it makes sense to leave it on Online. The frequency reported by the inverter doesn't seem particularly unstable, it fluctuates with 0.1hz every few seconds. So probably changing 01 to SUB soved it, which is strange, since I don't have solar, and have had it on USB (Utility First) from day 1. Perhaps just got the inverter to unconfuse itself. Either way, grateful for your help again

I've run into an issue with my inverter, for which I created a separate thread

Hi people, I've run into an issue with my Axpert King 3K. I use it with a Pylontech UP2500. It's a 24V system. I don't have solar, I use it purely as an UPS for now. It has been running without issues for many months. Yesterday I wanted to plug a drill into a plug powered by the inverter, so as a precautionary measure I switched the change over switch on my DB to power from mains while I use the drill, since it might have overloaded the inverter. So during that time there was no load on the inverter. When done I switched the change over back to the inverter, which immediately added +-50% load. For some reason this caused the inverter to reboot, and since then I've not been able to get it out of bypass mode. You will see in the attached video that it will for a few seconds switch to line mode, then revert to bypass. If I switch off utility power from the DB, it doesn't come out of bypass either and the battery isn't supplying the power. There are no fault lights on the battery, and the led lights on the battery indicate it is full. Here are some settings I think might be relevant, based on other threads I've read. These settings are however what they always were when everything worked fine. 01 - Utility First 10 - Auto (I also tried Online and Eco) 13 - 27v (default) (I also tried Full, probably irrelevant due to Utility First) 23 - Bypass Enabled (I also tried Disable and Forbidden) 26 - 27.6v 27 - 26.9v Any ideas? inverter_stuck_in_bypass.mp4

My system is the 3kva 24v, but I wouldn't want the settings I used if I were you (doubled to get to your 48v), because my batteries didn't last more than a year What program are you using here to change settings on the Axpert?

The guy at Sinetech who I discussed my setup with after running into issues said they shouldn't be equalized

I've actually noticed this. With a biggish load when the voltage reaches 25V, I cut some of the non-essential equipment using my home automation. That immediately raises the voltage again to 25.6V or more Thanks, I'll look into this

Thank you. I'm going to do this, will feed back if I have any luck On a slightly related note, since the SOC the Axpert displayed isn't really worth anything, how reliable is the battery voltage? Can I use that to roughly calculate remaining percentage? I was thinking to take whatever the voltage is at as a percentage inbetween my cut off voltage and the voltage the battery settles at after the initial drop when charge is removed, with a load. Would this give me a rough idea, better than the Axpert reported percentage, of where I am backup wise?

I have finally been able to have a look at the display on my friend's 48V 5kw King. Display firmware is 01.21, and I also confirmed that he has the PYL option on setting 5. Is it possible to download/extract the firmware from his display to update mine? Or what would the next step be once I have access to it? Just trying to determine how long and for what I would need it, as he runs his house on his, so would not be able to remove it for long.

Oh great, I have a friend with a 5kW King. I will find out what version his display has

I don't, unfortunately. So if anyone in my area (Weltevredenpark, Johannesburg) sees this, who has the same model with newer firmware, and is willing to help out, please let me know Thank you, I'll apply these changes. I have a lot of my electrical equipment on Sonoffs connected to Home Assistant, so I will use that to switch stuff off accordingly, whether I'm home or not Thanks for all the advice @Coulomb, much appreciated

Just when I thought I saw some glimmer of light at the end of the tunnel 09/2018, so not exactly recent. Which was why I hoped the 01.xx firmware just meant it was way behind on updates It seems that way, as well as other support like for the ICC software cable and SolPipLog for the 24v Pylon. The guy from Diversified Solutions (The Cable Guy) said the UP2500 uses a different protocol from that of the US2000 and US3000. In the interim, while waiting to get the Axpert and Pylon communicating (well, really hoping, as this would be first prize), what would be the recommended settings to use on the Axpert, that will give the Pylon the most freedom to manage itself with the inbuilt BMS? My priorities in order would be: 1. Protect the battery and it's total lifespan 2. Get the longest possible backup time before cutoff 3. Charge back up to full in the shortest possible time 4. Have the inverter report a more accurate battery capacity These are the Pylon specifications: My current settings are: Battery Type: USE Charge Current: 40A Bulk Charge: 28V Float Charge: 27V Low DC Cut Off: 23V

Thanks @Coulomb That's correct I would not mind, as long as instructions are clear and the risk of bricking the device is not too big. I've done that type of thing with many types of devices before, but never something of this value. I'm pretty sure I'm out of warranty by now anyway, so not worried about that. I'm not entirely sure which is the display version, I'm assuming U2 (Secondary CPU), which is 01.12. The rest are: U1 (Main CPU) 51.50 U3 (Bluetooth) 00.21 U4 (SCC) 00.00 Where would I get the correct firmware updates? Voltronic's website doesn't have anything other than manuals and monitoring tools that I can find. If you can point me to a legitimate download, either theirs or 3rd party (yours?) I could give it a try Do you still suggest 02.61, or rather 02.62?

Before another year goes by, I have created a new thread for my current system, which I'll use going forward to get my setup optimized. I have started it off with questions around my current settings.

My biggest annoyance, which is no fault of the battery, but rather the Axpert, is that I still cannot get a true SOC reading. I was ready to go the ICC route, but after emailing Diversified Solutions to confirm cable support, found out that the cable only works on the US2000 and US3000, and not the UP2500. I was apparently only the second person ever to enquire about the UP2500. So I then installed SolPipLog on a Pi, which feeds data to another Pi with Home Assistant, which I already had running for other stuff around the house. That works great for remotely monitoring everything, except SOC, and I have been unable to get SolPipLog to get data from the Pylon. I made my own cable as detailed here, https://powerforum.co.za/topic/2322-youdas-off-grid-lab/page/2/?tab=comments#comment-53641, bought a Sunix USB to RS232 Serial Adapter with Prolific PL2303HxD chip (https://www.sunix.com/en/product_detail.php?cid=1&kid=3&gid=18&pid=1136), and although it can communicate with the BatteryView tool in Youda's post on my Windows PC, I can't get it working with the Pi and older SolPipLog with Pylon support built in, or with the latest SolPipLog and PyLog separated. I can see the PyLog application's communication attempts in its log triggering the led on the serial adapter, but the PyLog application doesn't register any Pylon data. It does however trip up the Pylon, triggering it's protection mode, which is obviously not a good thing. So I'm suspecting that PyLog (and SolPipLog) doesn't support the UP2500 either. Has anyone been able to get any remote monitoring data from the UP2500? Preferably as MQTT or UDP that I can feed to Home Assistant via Node-Red?

After almost a year of procrastinating, I thought I'd create a thread for my "new" setup, which I hope to optimize with the help of the very knowledgeable people on the forum. My previous setup and subsequent change over to this one is detailed in another thread, https://powerforum.co.za/topic/4948-axpert-king-3k-issues-–-inverter-or-battery-fault/. I still use the 3kW Axpert King 3K (SOL-I-AX-3K) 24v, but now with a Pylontech UP2500. I don't currently have solar, so I use it purely as grid backup. Seeing as I've been working from home since lockdown started and Johannesburg's CityPower has decreased loadshedding timeslots from 4 to 2 hours, I have added more load to the system - about half my home's plugs (living area, study/home office, main bedroom, bunch of aquariums and my fridge), as well as all lights. Peak draw is about 1500w, down to about 300/400w, but the average is more around 700/800w. This gets me through loadshedding, and for any non-loadshedding power interruptions, which I don't know how long they will last, I just use power sparingly to increase backup time. The battery was supplied with a RJ45 cable, which I connected between the port labeled Li-Ion on the Axpert to the RS485 port on the Pylon. Considering my Axpert doesn't have the PYL option under the battery type setting, does this do anything? Does the battery and inverter have any meaningful communication? The guys who supplied the Pylon gave me inverter settings to use, and I have used these settings since May 2020, but am hoping to get confirmation that these are indeed the most optimal settings for my setup and use case, taking into account the Axpert premature float bug and Pylon built in BMS. These are the current settings: Battery Type: USECharge Current: 40ABulk Charge: 28VFloat Charge: 27VLow DC Cut Off: 23V (supplier said 22V)