Voltronic RS232 Inverter USB Cable for Solar Assistant

[FrankieG3011]

Good Day,

I am considering purchasing the Rasberry pi kit for Solar Assistant. However, I notice that they offer a Voltronic RS232 Inverter USB Cable for connecting to the Inverter.

I have the EG4 6500EX that I am currently using, and this is listed as an Inverter under the Voltronic category. I have a cable that came with the EG4 6500EX. Is this the correct cable that can be used with the kit and Solar Assistant? Will it work?

Grateful for your input. Thanks

 

[Adam De Lay]

Good Day,

I am considering purchasing the Rasberry pi kit for Solar Assistant. However, I notice that they offer a Voltronic RS232 Inverter USB Cable for connecting to the Inverter.

I have the EG4 6500EX that I am currently using, and this is listed as an Inverter under the Voltronic category. I have a cable that came with the EG4 6500EX. Is this the correct cable that can be used with the kit and Solar Assistant? Will it work?

Grateful for your input. Thanks

I believe that is the correct cable, yes. Looks like the new firmware cable that SS started supplying with the 6500s.

 

[marionw]

Your manual indicates on page 60 the Pin Assignment for BMS Communication Port:

PIN 1 RS232TX
PIN 2 RS232RX
PIN 3 RS485B
PIN 4 NC
PIN 5 RS485A
PIN 6 CANH
PIN 7 CANL
PIN 8 GND

I could not find the pinout for the adjacent port but EG4 normally wires tyhen the same
In the picture you provided it appears pins 1 & 2 (the two left most pins) are the ones is use which it appears would make it an RS232 to USB cable.

Solar Assistant can also use an RS485 to USB cable which is what I use to connect Solar Assistant to the batteries. Solar Assistant can communicate with the inverter and each battery in your battery stack using two separate cables. Not sure what batteries you have but for EG4 Lifepower4 batteries the RS485 cable must use pins 1&2 to connect your battery stack to Solar Assistant.

 

[Adam De Lay]

Your manual indicates on page 60 the Pin Assignment for BMS Communication Port:

PIN 1 RS232TX
PIN 2 RS232RX
PIN 3 RS485B
PIN 4 NC
PIN 5 RS485A
PIN 6 CANH
PIN 7 CANL
PIN 8 GND

I could not find the pinout for the adjacent port but EG4 normally wires tyhen the same
In the picture you provided it appears pins 1 & 2 (the two left most pins) are the ones is use which it appears would make it an RS232 to USB cable.

Solar Assistant can also use an RS485 to USB cable which is what I use to connect Solar Assistant to the batteries. Solar Assistant can communicate with the inverter and each battery in your battery stack using two separate cables. Not sure what batteries you have but for EG4 Lifepower4 batteries the RS485 cable must use pins 1&2 to connect your battery stack to Solar Assistant.

The cable is different for inverter communication or battery communication. The same one will not work for both. This bit me in the beginning because I kept trying to use the battery cable to connect the inverter to SA and it wouldn’t work.