sol-ark 15K - Page 26

22 Copyright © 2025 Sol-Ark LLC
PowerBoxPro Communications Installation and Setup Instructions
Custom RJ45 cable (outdoor-rated inverters only)
Create a custom RJ45 cable that connects battery port pins 4 (solid blue) and 5 (white-blue) to inverter port
pins 4 and 5, respectively.
Battery-inverter communication connections
Wire color
Battery (CAN-OUT) port
Inverter port
Solid blue
4
4
White-blue
5
5
Battery IDs and connections
1. Check the correct battery interconnection and connect to the inverter as specified in the Dyness
user manual.
2. Set the switch in position 3 on the DIP selection switches to the “ON” position for the battery master
module.
Inverter programming and connections
1. Use the appropriate RJ45 cable to connect one of the batteries to the inverter:
Indoor-rated inverters
- You can use an off-the-shelf ethernet cable. No custom cable is needed.
- Connect to the CAN port.
Outdoor-rated inverters
- Use the custom cable described at the beginning of these instructions.
- Connect to the “Battery CANBus” port
2. Program the inverter with this battery's appropriate charge/discharge settings.
3. Enable “BMS Lithium Batt” and set its value to 00.
4. (Optional) Turn on “BMS_Err_Stop” if you if you want the system to fault on battery communications
loss.