（1）The positive input line is connected to the green terminal of “DC+”；
（2）The negative input line is connected to the green terminal of “DC-”;
（3）When wiring, be sure to tighten the terminals to avoid arcing.
（4）The wiring of the busbar is as shown below:
Note: Common problems are: connecting the input line to the NC terminal, connecting the positive and negative lines, and not tightening;
If the input cable is not connected properly, the host module will appear, unable to start, flash screen, poor communication, etc.