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4. Installation Instructions Parallel Communication Cable Wiring
The parallel communication line of our company is the standard DB15 computer cable with shielding function. It is used for
single phase or biphasic parallel connection. The connection of each machine should be one outward and one inward, i.e. the
male head of the machine (outward) is connected with the female head of the machine (inward), not the male head of the machine
connected with the female head. At the same time, the parallel communication wires of each machine must be tightened with
DB15 terminal screws to prevent the parallel communication wires from falling or losing contact, which can cause the system
output to function abnormally or become damaged.
5. Flow Detection Equalizer Cable Wiring
Our EQ flow detection line is twisted connecting cable. When a single-phase parallel connection is made, each machine shall
be connected with one output and one input, i.e. the machine's current equalization line shall be connected with the green port of
the machine's current equalization line which requires parallel connection (choose one of the two ports, no mandatory sequence
requirement). The current matching port on the machine will not be connected to the current matching port on the machine. At
the same time, the flow detection line of each machine must ensure that the red and black lines are not changed manually. In
addition, the compensation screw must be tightened to prevent abnormal output or damage caused by detecting abnormal current
equalization in parallel units. For wiring, refer to the schematic diagram in paragraph 2.4.3.When performing the split phase
parallel connection, the equalization flow detection lines of all machines in the same phase will connect to each other, but the
different phase equalization flow detection lines will not connect to each other. Other precautions are the same as for the single
phase parallel connection. Refer to schematic diagram 2.4.4 for wiring information. .
1..Before and after connecting the system, refer to the following system wiring instructions in detail to ensure that all wiring
is correct and reliable before powering on.
2. After the system is properly connected and powered on and running normally, if you need to add a new unit, you must
disconnect the battery inlet, PV inlet, AC inlet, and AC outlet, and ensure that all inverters are turned off before connecting
to the system..
2.4.3 Schematic diagram of the single-phase parallel connection guide
1.The parallel communication cable and the inverter equalization flow detector cable must be screwed tightly after being
connected. The schematic diagram is as follows:
2. Installation Instructions
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