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  1. I no longer have my VM3 but long story short, my comms issues back in January with the VM3/Dyness B4850 were caused by the battery software and not the VM3 as I assumed. I replaced the VM3 at the time but still had some comms issues with the new Growatt I replaced with until Dyness arranged for the battery software to be updated which sorted it all out. I believe there were also circuit board issues with some of the late 2019 B4850 batteries and that Dyness have since replaced boards in these batteries. From my understanding of what caused the issues I had and what Dyness has changed sinc
  2. Hi guys just wanted to close the loop on this issue - the final conclusion after many hours of troubleshooting is somewhat inconclusive but it seems that the Axpert VM3 is not protocol / communication compatible with the Dyness B4850 battery (yet) - Dyness have taken note and will no doubt be looking into this in due course. Dyness confirmed that the Axpert King and Synapse version of the same have been Specifically tested and are compatible. I must pay a big complement to both Nico and Anton at Solar Panel Energy in Vanderbijlpark (where I bought my Dyness batteries) who, since o
  3. Hi Wilfred I’m attaching the cable pins - I found the Axpert pin positions on a Pylontech summary which I also attach. Ive put my cable on a cable tester and it shows that Inverter PIN 1 runs to battery PIN 5 - all else is standard ie 2=2 , 3=3 etc - To me this seems correct for 485 communication? thanks
  4. Thanks guys - no response from Dyness yet but will be sure to update if/when I do get this sorted out! Apologies Coulomb - I see my last response to you went Awol - but that red push button is only the sleep/wake switch. Wilfred, I will try to attach a copy of the page in the Dyness manual dealing with the pin setting.. cheers
  5. Thanks again My inverter’s date of manufacture is 09/2019 so I’ll be pretty disappointed if it cannot function reliably without a further firmware update? If that be the case it’s going back to the supplier! Noticed something interesting in the Dyness battery manual - it notes that the battery can communicate via CAN or RS485 but that the factory default is CAN. The Axpert only communicates via RS485 - does this imply that one should / could adjust the battery from CAN to RS485? I assumed that this would be automatic and cannot see any obvious way such an adjustment can be made? (On
  6. Thanks, have tried these new settings (27 now at 51.5V) but the batteries still go into protection mode as soon as they show fully charged. Have switched off utility power and allowed the batteries to drain for 2min at which point they exit protection mode/ alarm lights go out again. So looks like they are still being overcharged forcing the BMS to kick in? I can only conclude that these batteries need the RS485 communication to function?
  7. Thanks Coulomb So I’m reading that those settings should change to 26 = 52.2V (or perhaps lower still?) 27 = 52.2V (or lower than 26?) 29 = 45.5V (= 2.5V below setting 12) All else to stay as is. Happy to try this if I’ve got it right? Thanks
  8. Thanks DaveSA I’ve given it a try but no joy - the Dyness manual is also quite adamant that the DIP be set as per the manual even if only a single battery is used (Pin 3 on master/single for Voltronic inverters). Appreciate all the input -This issue has become very annoying and as per my above post I’ve now reached out to Dyness directly so let’s see what they say.. Thanks again
  9. Hi Wilfred Have changed those settings as suggested but still have the batteries going into alarm/protection mode. Have now contacted Dyness via their website as suggested and will update if/when I receive their feedback. Thanks for the advice!
  10. The dealer who sold the batteries indicated that I must set the inverter to PYL. I’ve tried setting it to USE and using the following settings (as suggested elsewhere on the forum) 02 = 20A 12 = 48V 13 = 51V 26 = 53.2V 27 = 53.2V and 29 = 47V when using the above everything seemed to work fine for about two hours but then both batteries’ alarm lights came on (both master and slave) which seemed to suggest that they were being over- charged? (The inverter panel indicated that the batteries were only 50% charged but the batteries showed full charge). As it s
  11. Hi Coulomb / Wilfred The Dyness manual doesn’t specify inverter settings - it lists the Various inverter brands it is compatible with (Voltronic being one) and then indicates ‘for the following inverter brands the battery DIP setting should be X and for these other brands Y’ etc
  12. Hi Coulom I have no idea whether they are protocol comparable with Pylon (pretty new to all of this and not finding much info online) although both the dealer who ultimately sold the Dyness batteries to me as well as another dealer with whom I originally enquired about them some time ago, indicated that they work fine with the VM3 / King.. I should be making this the dealer’s problem, but they are closed till 8 Jan and we already had another 2 hour power outage last night so would really like to get this up and running soonest if possible.. Appreciate your response (Can also just
  13. Hi, I’m new to the forum and hope someone could please assist. Have purchased a new RCT VM3 5kva with 2x Dyness B4850 batteries to replace my previous Axpert 5kva/ Lead Acid setup. Have connected up the above 100% by the book but now getting fault code 61 (communication failure) between the inverter and batteries. I’m using a custom Comms cable (made up for Axpert King by the Dyness supplier) via RS485 Port. I have two of these cables and have tried the second comms cable also but the problem continues. The battery PIP settings are as per Dyness manual for Voltronic inverter (pin 3 o
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