Good Evening,

I have bit of a situation with my inverter, I have Kodak OG 5.48 Off Grid Inverter connected to a Greenrich U-P3686 Lithium 3.686kWh 5000W Battery.
The setup works alright as it currently is, even though I don't have solar panels connected yet.
The problem I have, is that I can not get the battery BMS to communicate with the inverter at the moment.
I have the original BMS cable plugged in that came with the battery (Was gifted the inverter, so i don't have any of the cables or software CD that came with the inverter), but as soon as I change the "Battery Type" setting in the WatchPower app, or on the inverter itself form User to Pylon, then I get the Error 61 code on the inverter display, which I know is the Communication Error code, but I can not seem to get this code cleared unless I change the Battery Type back to User Defined.

Am I wrong in assuming that having the inverter control the battery by "talking" to the battery directly would be more efficient for the battery, than having to set all settings for the battery manually as a User Defined battery type?
Also, what else can i do or try to get the communication between the battery and inverter to work as the way it was designed to do? I have tried creating a new cable, but none of the pin-out options that I can find seem to actually work even though the battery and inverter are supposed to be compatible and able to communicate with each other

Good evening @Darksight_07 and welcome to the forum.

2 hours ago, Darksight_07 said:

Am I wrong in assuming that having the inverter control the battery by "talking" to the battery directly would be more efficient for the battery, than having to set all settings for the battery manually as a User Defined battery type?

No you are not wrong, it is much better for the inverter to communicate with the battery than to set it up manually.

Check the following:

A] Make sure that the address of the battery is correct - if only one battery is present then the leftmost switch must be in the upward position and the other 3 must be in the downward position, if there are two batteries then on the second battery the second switch from left must be in the upward position and the other 3 must be in the downward position.

B] Check the wiring of the communications cable which came with the inverter - on the battery side pins 7 and 8 of the connector is populated and on the inverter side pins 3 and 5 are populated, pin 7 on the battery side goes to pin 5 on the inverter side and pin 8 on the battery side goes to pin 3 on the inverter side.

C] Make sure that you use the RS485 connector next to the CAN connector to communicate with the battery and not the two RS485 connectors next to each other - the two RS485 connectors next to each other are for battery to battery communications.

D] If the communications cable has a label on which says PYLON make sure that the pinout is as stated above because the label can move on the cable.

The cable pinouts above should work with all Axpert type inverters which can communicate with the Greenrich batteries via a RS485 connector, the cable pinouts above is working for my setup with the 7.2kW Kodak Max and the same Greenrich battery as that you have I doubt that there would be different cables for the different Kodak inverters, I received the communications cable with the inverters that I have.

Kind Regards

GerhardK83

Hi @GerhardK83 ,

Thank you very much, and thank you for the feedback, appreciate it.

Unfortunately, even with the pin-out configuration that you described I am still unable to get communication between inverter and battery. Either I am doing something extremely wrong, or i can only assume that there is something faulty either on the battery's BMS port, or on that of the inverter.

Either way, for now I am going to give up on this expedition, as they say, if it works don't fix it.
Once again, thank you for taking the time to reply.

Regards,

Darksight_07

Have you read this thread?