Jump to content

Colin

Members
  • Content count

    25
  • Joined

  • Last visited

About Colin

  • Rank
    Member

Profile Information

  • Location
    Ngwenya; Swaziland

Recent Profile Visitors

152 profile views
  1. I think you are correct plonkster, as works 100% without CAN cable Not sure how the Pylontech BMS should communicate with Axpert if no ICC though, perhaps it doesn't
  2. Just finished installing my new Pylontechs, initially had exactly same issue. I have ICC on Raspberry Pi Checked cable from Axpert output by connecting to PC and started WatchPower, again initially nothing, disconnected cable, and reconnected and suddenly the comms was back, not sure why though. Plugged back into Pi and ICC up again. So not sure what issue was, perhaps output from Axpert had Nickers in a know as Sidewinder suggested, and the unplugging and re-plugging a few times sorted it Edit to above: It seems the Pylontech cable is the cause. When ICC restarts, again I get no comms from Axpert, if I then first unplug Pylontech cable, then unplug ICC Pi cable and re-plug it, I get comms back. Then I can re-plug Pylontech cable and still ICC working. Suspect this is either Pylontech or Axpert issue
  3. Colin

    Extra solar panels Axpert

    Thanks for all the replies I will put another string in this weekend hopefully, together with the new pylontech That should make the missus happy
  4. Colin

    Extra solar panels Axpert

    The Axpert 5kVa 4000W inverter says max 3000W solar input. If I add more to try get better cloudy / low sun charging, will it damage the inverter when full sun and more than 3000w available, or is there a chance the invertere may limit the input and only allow the 3000W?
  5. Colin

    Axpert battery recomended charge voltage

    Bingo, many thanks @Coulomb I did have the LC1, upgraded to BC1 73 00c and now goes down to the set 56V at 9Amps charge Simple fix, but totally ove1looked without your help
  6. Colin

    Axpert battery recomended charge voltage

    I think you correct, will double check, I may have downloaded wrong firmware
  7. Colin

    Axpert battery recomended charge voltage

    Thanks for above @Coulomb, I understand you explanation, only issue is I have charge set to 50Amps, thus should float not start at 9Amps?
  8. Colin

    Axpert battery recomended charge voltage

    I have noticed that the Axpert will only go to 57.8V bulk charge if the available charge is at least 50Amps, as current drops, so does the voltage. On cloudy day with only 1KW available from solar (10A into battery), battery voltage will only be about 52V -When I run geny, battery voltage climbs with current, 30Amps into batteries - voltage at 54V, 40Amps -55.5V, then only gets to the 57.8 at 50Amps. Then again as batteries nearing full, current trailing down, voltage drops along with the current. Should this voltage not stay constant at 57.8V till current drops enough? Running 73.00b with setting 32 - bulk charging time set to aut Edit: The above was when batteries needing charge. Once nearing full however, the voltage does stay at 57.8V, possibly due to lower resistance? However it then does not appear to drop to float voltage, charge current now falls to 5Amps on Axpert (BMV702 reads 7A), but voltage now stays at 57.8V
  9. Colin

    BMV702 battery monitor

    On another note, I want to use the BMV to disconnect load when SOC low, I have ready a few threads on doing this, however the manual says max 60V. Has everyone adhered to this? Means I need a 12, 24 or 48V contactor / relay instead of simpler, more readily available 230V
  10. Colin

    Axpert battery recomended charge voltage

    Thanks @plonkster, attached from Axpert manual, they do call it "bulk", I assume we talking of the same setting?
  11. What would the recommended bulk and float voltage be on these vision batteries? Am I correct in saying 57.6V - 58.8V bulk and 54.4V - 55.2V float, these seem a bit high especially the bulk charge Axpert 5kVa 4KW inverter Vision 6FM100P-X.pdf
  12. Colin

    BMV702 battery monitor

    Sounds like a good plan. With HA's in voltages are pretty stable now within 0.3V (this with cheap Chinese voltmeter on each battery so not 100% accurate), need to check when removed
  13. Colin

    BMV702 battery monitor

    Thanks, issue is at what stage (how much load and how much volt drop) does it become too far a drop in that we need to believe the voltage more than the BMV? Or do should I totally ignore the volt drop as long as it recovers?
  14. Colin

    BMV702 battery monitor

    Yes the voltage does recover, never tried the hair drier a second time, maybe I should try that too, a load a few times and monitor the voltage
  15. Colin

    BMV702 battery monitor

    Ok, zeroing voltage did make a difference, thus morning 48.8V and 81% However when wife starts hair drier (1200W) voltage dips to 47.2V I then run the geny for only 5 minutes then off and she was able to run microwave (1200w) for 3 minute and to toaster (1800w) for one slice without dipping below 48V Should I ignore voltage dip and trust BMV?
×