May 22, 20224 yr Hello, I bought a battery Pylontech us3000c.h I have a Mpp solar 5048mkx inverter. On the inverter is one of setups dedicated for PYL batteries. I made it but in operation appear an bad communication alert battery to inverter err 61. The cable and switches are the same from operation manual. What can I do for a good communication battery to inverter? Oder of pins? It's anyone who know this topic? Thanks
May 23, 20224 yr Author 13 hours ago, Gabriel Dragos said: Hello, I bought a battery Pylontech us3000c.h I have a Mpp solar 5048mkx inverter. On the inverter is one of setups dedicated for PYL batteries. I made it but in operation appear an bad communication alert battery to inverter err 61. The cable and switches are the same from operation manual. What can I do for a good communication battery to inverter? Oder of pins? It's anyone who know this topic? Thanks I found and modified the bms cable according to the attached diagram. Works OK now, even if warnings type 04 low battery randomly appear after it has reached 100% charge (?) 43-101203-02G_BMS Cable pinout.pdf
May 23, 20224 yr Author 8 minutes ago, Gabriel Dragos said: I found and modified the bms cable according to the attached diagram. Works OK now, even if warnings type 04 low battery randomly appear after it has reached 100% charge (?) 43-101203-02G_BMS Cable pinout.pdf However, in my opinion, with just two pins I don't think that all the parameters can be transmitted for a complete battery management >>> inverter. Does anyone have an opinion on this subject?
May 23, 20224 yr 7 hours ago, Gabriel Dragos said: However, in my opinion, with just two pins I don't think that all the parameters can be transmitted for a complete battery management >>> inverter. Does anyone have an opinion on this subject? You can transmit loads of data over 2 pins / wires.
May 23, 20224 yr Author I agree that a lot of data can be transmitted over two wires, but I logically considered that it's a "shortcut" version, since the base version has 4 pins, which is 6 times more data. But maybe 2 pins are enough ....
May 23, 20224 yr If I 'sniff' the data between my battery and inverter, 6 messages are sent about every 2 seconds, which takes milliseconds so no need for any more wires as the current ones are not used to anywhere near full capacity. 0x00 0x00 0x00 0x00 0x03 0x50 0x4E 0x00 rxId = 0x359 0x0C 0x02 0x20 0x02 0x56 0x04 0xC2 0x01 rxId = 0x351 0x6B 0x13 0xB1 0xFF 0xC0 0x00 0x00 0x00 rxId = 0x356 0xC0 0x00 0x00 0x00 0xC0 0x00 0x00 0x00 rxId = 0x35c 0x50 0x59 0x4C 0x4F 0x4E 0x20 0x20 0x20 rxId = 0x35e 0x5B 0x00 0x64 0x00 0x56 0x04 0xC2 0x01 rxId = 0x355 Edited May 23, 20224 yr by Tinbum
May 24, 20224 yr Author Thank you very much for the clarifications. So 2+2 pins in the basic version are extra. One question: why some warnings appear for a few seconds like "low battery" or "battery under shutdown" even if the battery is charged? I see that the operating cycle is not disturbed. Do you have an explanation? Thanks.
May 24, 20224 yr The cable you are using doesn't look suitable for the US3000C battery to use CAN communication it looks as if its using RS485. Look at the battery manual and it will show you the pins to be used for CAN if the inverter supports CAN. Also check the dip switches are correct according to the BATTERY manual not the inverter manual, as they are often for the older pylontech batteries. Edited May 24, 20224 yr by Tinbum
May 24, 20224 yr On 23/5/2022 at 10:26, Gabriel Dragos said: Encontré y modifiqué el cable bms según el diagrama adjunto. Funciona bien ahora, incluso si las advertencias tipo 04 de batería baja aparecen aleatoriamente después de que haya alcanzado el 100 % de carga (?) 43-101203-02G_BMS Cable pinout.pdf Hi! Please, give me inverter version, U1 & U2, thanks
May 24, 20224 yr Author I had already made all the settings properly DIP switches and the supplied rs485 cable according to the Pylontech manual. I modified the cable according to the diagram and it worked correctly except for the random errors err 04 as I mentioned. Now, on the recommendation of an automation specialist, I connected the inverter to ground (which was not connected =43-101203-02G_BMS Cable pinout.pdf my mistake). It works perfectly now. Thanks for the guidance.
May 24, 20224 yr Sorry, i need a U1 and U2 the firmware. This inverter like a VM3, i have a comunication problems too
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