search

Louisvdw / dbus-serialbattery

Battery Monitor driver for serial battery in VenusOS GX systems
MIT License
522 stars 164 forks source link

Unstable communication #512

Closed Folho39 closed 1 year ago

Folho39 commented 1 year ago

Hi, I have installed the driver for communication on my system earlier this week and am using this with a Uart port on my JBD BMS. The Bms was recognized and looked to be working ok, however when I keep an eye on the meaured values from the bms, all signals drop away and come back. and each time this is happening, the inverter stops using power from the battery.

Any idea how I can get the communication more stable? am using a multiplus 5000 48V with inbuild Gx device and the system runs as ESS

Thanks in advance,

for the communication I am using the uart converter provided by JBD, which i also use for the configuration from the module.

mr-manuel commented 1 year ago

Most communication issues are due to cabeling. Please post a few picture of your connections.

  1. Which adapter are you using?
  2. Is the adapter galvanic isolated?
  3. What cables did you connect between adapter and BMS?
  4. What does the log say?
pos-ei-don commented 1 year ago

I saw them unstablenusing cheap usb Hubs or overpowered usb ports, especially when using more than 1 bms. The best solution for me was to use a "rpi usb hat" Board, with a good Power supply.

Folho39 commented 1 year ago

Hi, Thanks for the reply, The cable between the usb adapter and the BMS was unshielded, as i could not find a shielded cable I have created a shield and this looks to be working, before until 750watt was working, above problems would occur, I have just tested with 2kw after placing the shield and this was without problems.so it looks to be the cause.

mr-manuel commented 1 year ago

Could you post a picture of your installation? Maybe this help also others.