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ai-republic / bms-to-inverter

Use, monitor and control any battery brand with any inverter! Application to read and monitor data from BMSes and write data to an inverter using any protocol (e.g. UART, RS485, ModBus or CAN)
https://github.com/ai-republic/bms-to-inverter
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Selectronic SP Pro #35

Open gus1234sudo opened 6 days ago

gus1234sudo commented 6 days ago

Hi. Total noob here (the extent of my knowledge was putting Victron VRM on pi3B).

I have a selectronic inverter (I am off grid) and about to replace ABB with Fronius AC couple). I will have upto 3 fronius inverters on different arrays.

Apparently selectronic supports pylontech but unsure as contacted Batrium and they could not guarantee their bms would work so went with the jk inverter bms.

Do you know if your programming supports selectronic?

In the future I would like to get information on home assistant.

Thanks for your time.

G

ai-republic commented 6 days ago

Hi, if the Selectronic inverter can 'speak' the Pylon protocol then it should be no problem. Otherwise I would need a CAN communication specification for the Selectronic.

And your setup would be the JK BMS -> Selectronic inverter right? Or JK -> Fronius? I got a bit confused reading ;)

gus1234sudo commented 6 days ago

Sorry, a lot of inverters. JK to selectronic is what I am looking at. When I contacted Batrium about their bms (they advertise compatible with inverters that speak pylontech) they said they had issues with selectronic not working and wouldn’t guarantee it would work. Where would I find a can communication specification? Sorry, I did say I am a noob :)

thanks for your prompt reply

ai-republic commented 1 day ago

Ah ok, so you can test if you get reading using the JK BMS binding (choose JK_CAN in the Configurator app). For the test please enable debug log-level and as inverter choose NONE for now. Which CAN hat do you have for your Raspberry PI? If none yet, I would suggest the Waveshare 2CH CAN hat as you'll be needing 2 can ports (one from BMS to RPI and one from RPI to inverter).

NOTE: We have discovert that the Waveshare 2CH CAN hat does not (currently) work with a RPI 5. If you want to buy a PI for this project I would suggest to go with the RPI 4B for now.