10
(Optional) Installing Battery Cables
3.6
Properly keep the 
watertight caps.
Pull the battery cable 
back to ensure that it is 
connected securely.
Battery terminals (BAT+/BAT–)
Assemble the positive and negative connectors by following the instructions in section 3.5 
"Installing DC Input Power Cables."
• Use insulated tools when connecting cables.
• Connect battery cables with correct polarity. If battery cables are reversely connected, the solar 
inverter may be damaged.
Click
(Optional) Installing Signal Cables
3.7
• When laying out a signal cable, separate it from power cables to avoid strong signal 
interference.
• Ensure that the protective layer of the cable is inside the connector, that excess core wires are 
cut off from the protection layer, that the exposed core wire is totally inserted into the cable 
hole, and that the cable is connected securely.
• Block the unused cable hole using a cap and tighten the cable gland.
• If more than one signal cables are required, ensure that they have the same outer diameter.
COM port (COM)