Worldwide Energy and Manufacturing USA Co., Limited
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cannot connect wires. The PIN7 and PIN8 of external DRM adapter
’
s RJ45 plug must be
short connected together.
RS485 communication port
RS485 communication port is used to communicate with smart meter to achieve
anti-countercurrent. The connection between smart meter and inverter and grid is as shown
in Figure3-28
Figure3-28 Connection diagram between communication smart meter and inverter and grid
NOTE: When using the anti-countercurrent function, the following setting must be done:
1. Set the anti-countercurrent enable in
“
System Setting-General Setting-I/O set
”
to open;
2. Set the anti-countercurrent power in
“
System Setting-General Setting-Engineer set
”
according to the actual use (the setting value of anti-countercurrent power is percentage, it is
corrected by rated power. For example, when the rated power of the inverter is 5kW, if the
anti-countercurrent power set to 30%, the set Smart feed-in control power is 1.5kW).
The pin illustration of smart meter is as shown in Table3-3.
Table3-3 Pin illustration of smart meter
Pin
Illustration
1
Connect to phase-L of GRID port in the inverter.
2
Connect to phase-L of grid input.
4
Connect to phase-N of GRID port in the inverter and phase-N of
grid input.
11
RS485: A. Connect to RJ45's pin7 of COM. port in the inverter.
12
RS485: B. Connect to RJ45's pin8 of COM. port in the inverter.
The communication procedure of COM. port is as follows.
Step 1 Strip the insulation layer of communication wire, unscrew the lock nut of waterproof
RJ45 port (as shown in Figure3-29) and then lead the communication wire go through the