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  1. uksa007

    JK BMS CAN bus comms now possible for inverters that support Goodwe and Pylontech batteries

    The Heat+CAN mode has Heat output and CAN(not used as it is proprietary JK protocol) Both will work, if you need the heat function get the Heat version if not, get the non Heat version.
  2. uksa007

    JK BMS CAN bus comms now possible for inverters that support Goodwe and Pylontech batteries

    Every single product/software is based on work by someone else, if the eg IEEE didn't make the standards no one would have standards for anything, nothing would work. Syssi code saved me a couple of hours work, not having to write my own serail reading code, had I know it was going to going be...
  3. uksa007

    JK BMS CAN bus comms now possible for inverters that support Goodwe and Pylontech batteries

    The cost to build and manufacture a product is not the cost of the raw materials. There is significant cost in labour to build the product, manage the inventory (import taxes), packing and shipping, payment processing fees, and provide support Not to mention the 1000's of hours research and...
  4. uksa007

    JK BMS CAN bus comms now possible for inverters that support Goodwe and Pylontech batteries

    Yep you are totally right. Too many people that caused me to stop supporting this open source, as they: Complain about everything Want everything for free Don't provide any financial support Want many hours of support for free, to help build hardware/firmware which they have no experience...
  5. uksa007

    JK BMS CAN bus comms now possible for inverters that support Goodwe and Pylontech batteries

    Yes I have a dedicated Goodwe protocol in addition to Pylon, Deye and Victron.
  6. uksa007

    JK BMS CAN bus comms now possible for inverters that support Goodwe and Pylontech batteries

    I have a first generation, retrofit battery inverter, no issues with it. They come with a 10 year warranty here, check your local website for warranty info, it might differ by country.
  7. uksa007

    JK BMS CAN bus comms now possible for inverters that support Goodwe and Pylontech batteries

    No that inverter does not support Pylon over CAN Bus. Nor do any of the Voltronic. CAN and RS485 are two completely different communication interfaces, electrically they are totally different. Goodwe is less than 10W self consumption at night...
  8. uksa007

    JK BMS CAN bus comms now possible for inverters that support Goodwe and Pylontech batteries

    There are many cheap options, Goodwe or Deye. My interface works with them.
  9. uksa007

    JK BMS CAN bus comms now possible for inverters that support Goodwe and Pylontech batteries

    Yes pretty sure it does NOT support Pylon CAN, I would use a different inverter brand, if you haven't upgraded already.
  10. uksa007

    JK BMS CAN bus comms now possible for inverters that support Goodwe and Pylontech batteries

    This suggests it only supports RS485, confirm 300% with the seller and manufacturer, that it supports pylon over CAN bus!!!! https://www.invertersupply.com/media/data/Any-Grid_PSW-H_Battery-settings-for-Pylontech-Batteries_2021-05-07.pdf I have a board that is powered directly from the JK BMS.
  11. uksa007

    JK BMS CAN bus comms now possible for inverters that support Goodwe and Pylontech batteries

    Last time I checked they only supported RS485, confirm 300% with the seller and manufacturer, that it supports pylon over CAN bus!!!! You do not need the JK CAN model/heat BMS, The CAN is their own standard not used by inverters, and the BMS is not upgradeable.
  12. uksa007

    JK BMS CAN bus comms now possible for inverters that support Goodwe and Pylontech batteries

    This has some info, but everything suggest that it should be an RJ11 at the inverter RJ11 ----- RJ45 1 Wh/Or 4 2 Or/Wh 5
  13. uksa007

    JBD/Overkill BMS CAN bus comms support for inverters

    Once you have the BMS connected to the Cerbo, with my interface, you can select which is used in the victron system, it is set to Automatic by default.
  14. uksa007

    JBD/Overkill BMS CAN bus comms support for inverters

    The EG4 6000XP seems to support Pylon CAN protocol, so I don't see why it wouldn't work. It uses the UART port that the dongle uses. Consider the JK-BMS if you want both Bluetooth app and my board connected. I have replied to your private conversation also. Regards.
  15. uksa007

    JK BMS CAN bus comms now possible for inverters that support Goodwe and Pylontech batteries

    Hi, Logs show you have no communications with the inverter, I test all my boards before shipping, so maybe a cabling and inverter config issue. My interface board is wired. Pin 4 CAN H, Pin 5 CAN L it should be straight through cable, CAN H connects to CAN H etc. Can you confirm your...
  16. uksa007

    JK BMS CAN bus comms now possible for inverters that support Goodwe and Pylontech batteries

    1. There is no such value id(state_of_charge), id(capacity_remaining) is the SOC. 2. SOC is often not accurate and can drift over time if it doesn't get reset. Charging to a set voltage is the most accurate way. Adjust rebulk_offset lower to trigger charging when you what it. The default...
  17. uksa007

    JK BMS CAN bus comms now possible for inverters that support Goodwe and Pylontech batteries

    If you increase the absorption voltage slider(and then return it to normal) it will also trigger the battery into Bulk mode eg if you move the absorption slider to 57.6 - 2.5v = 55.1V battery voltage below this would trigger Bulk.
  18. uksa007

    JK BMS CAN bus comms now possible for inverters that support Goodwe and Pylontech batteries

    By my rough cals you have used 36AH in 11 Hours = 3.27A * 53v = 176.58 W average, which is basically just a fridge running. Do you have the whole house connected or just a few circuits, or is no one living there? In cases like these there is probably no need to charge every day, just charge...
  19. uksa007

    JK BMS CAN bus comms now possible for inverters that support Goodwe and Pylontech batteries

    Here is how it works in the real world when you are actually using the battery as intended. You will see the battery has gone back to bulk at 17:30 right as it starts to discharge. I'm charging to 56V (testing if balancing better, spoiler it does) with a 2.5V rebulk_offset
  20. uksa007

    JK BMS CAN bus comms now possible for inverters that support Goodwe and Pylontech batteries

    It's not really a problem here, it becomes troublesome when I wrote the MuliBMS code, and adding a new pack would send alarms to the master.
  21. uksa007

    JK BMS CAN bus comms now possible for inverters that support Goodwe and Pylontech batteries

    Yep that's correct, because in real use case(for most people) the battery voltage will drop the surface charge in a few hours. It will also not be at 71% after discharging all night. When the morning rolls around it will be/have been below the offset at some point, and will be in bulk mode...
  22. uksa007

    JK BMS CAN bus comms now possible for inverters that support Goodwe and Pylontech batteries

    I think I programed it initially, and then made more changes to fix other status, and when I tested it worked as it should. I think at some point I changed my mind and decided that startup charging was not I good idea. In later code it is very different, and the whole code base does not run...
  23. uksa007

    JK BMS CAN bus comms now possible for inverters that support Goodwe and Pylontech batteries

    Normal operation is for it not to charge till Voltage is below: absorption_v - rebulk_offset: You don't want a rebooting esp32 to be constantly charging the battery. Think of an edge case where the ESP is rebooting every 30 seconds, it will be constantly microcycling the battery. My Interface...
  24. uksa007

    JK BMS CAN bus comms now possible for inverters that support Goodwe and Pylontech batteries

    Not on the model we were testing. It didn’t exist. No mention of it in the user manual. No option on the front panel or via software.
  25. uksa007

    JK BMS CAN bus comms now possible for inverters that support Goodwe and Pylontech batteries

    Yes that would explain it if it's rebooting. The ESP32 logs will write a long entry for uptime every 1minute. This will tell you if it is rebooting. I'm currently testing a new interface board of mine that has a Built-in DC-DC power supply, and will run directly from the Jk-BMS as it supply...
  26. uksa007

    JK BMS CAN bus comms now possible for inverters that support Goodwe and Pylontech batteries

    Battery mode lithium? You can't use % or Voltage it has to be lithium!
  27. uksa007

    JK BMS CAN bus comms now possible for inverters that support Goodwe and Pylontech batteries

    The charging voltage should be set by the ESP32 set absorption voltage when in bulk. Have you configured the Deye inverter correctly: Battery mode lithium Lithium mode 00 After a reboot It will stay in Wait until the battery voltage is below: absorption_v - rebullk_offset = 52.7v (this stops...
  28. uksa007

    JK BMS CAN bus comms now possible for inverters that support Goodwe and Pylontech batteries

    How much current was there at 53.7v? 53.7 /16 = 3.356 per cell with no load would be about 90% SOC It should look like this:
  29. uksa007

    JK BMS CAN bus comms now possible for inverters that support Goodwe and Pylontech batteries

    It goes into Wait state when the battery voltage = absorption voltage, what was the battery voltage when it when into wait state? The SOC is generated from the BMS, have you calibrated it for SOC and have you configured the battery chemistry and setting correctly in the BMS? What is your...
  30. uksa007

    JK BMS CAN bus comms now possible for inverters that support Goodwe and Pylontech batteries

    Deye Time of use is a bit confusing, It looks to me like it is doing what you have configured in the TOU setting. It is only charging to ~40% before 12:00 and 50% to 16:00 Do you need to use TOU, maybe try turning it off and see what it does? You should monitor the ESP32 logs or in Home...
  31. uksa007

    JK BMS CAN bus comms now possible for inverters that support Goodwe and Pylontech batteries

    You will need one of my interface boards. The CAN version of the BMS uses its own protocol that is not compatible with Inverters. My interface uses the RS485/GPS port on the BMS which is enabled by default on all models. https://github.com/Uksa007/esphome-jk-bms-can/discussions/16
  32. uksa007

    JK BMS CAN bus comms now possible for inverters that support Goodwe and Pylontech batteries

    You are not using my code or hardware, there is no solution I can provide. I don't use the JK-BMS CAN interface, I use the RS485/GPS interface! All I can suggest is that you test your CAN Analyzer tool with a known working CAN bus. Make sure you have CAN H connected to CAN H, CAN L -> CAN L...
  33. uksa007

    JK BMS CAN bus comms now possible for inverters that support Goodwe and Pylontech batteries

    It just the latest version available from the normal app stores. It only shows the new options in the app if you have newer version BMS hardware/firmware (firmware doesn't seem upgradeable) So unfortunately we will not get any of those options in the APP.
  34. uksa007

    JK BMS CAN bus comms now possible for inverters that support Goodwe and Pylontech batteries

    I did some testing with the Voltronic inverter a while ago, I think the only issue we had was there no way to control the discharge current in the inverter, it simply didn't support max discharge current even though we were sending it. The inverter itself doesn't have any register or ability to...
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