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3Installation Guide
PV Grid-Connected Inverter SPI-B2
S
Series
(1500-6000) User Manual
28
All rights reserved ©Xiamen Kehua Digital Energy Tech
Co.,Ltd
1--8
RJ45 plug
RJ45 port
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
Pin definition of RJ45 plug:
PIN 1: White orange - DRM 5
PIN 2: Orange - DRM 6
PIN 3: White green - DRM 7
PIN 4: Blue - DRM 8
PIN 5: White blue - RefGen
PIN 6: Green - DRM 0
PIN 7: White brown - METER:A
PIN 8: Brown - METER:B
Figure3-27
Pin definition of inverter’s RJ45 plug
DRM port
DRM is used to connect the DRM controlling device.
When the COM. port set to DRM port, the PIN7 and PIN8 of inverter’s RJ45 plug 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.
RJ45 port
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
PIN7
PIN8
Smart
Meter
RS485
: B
RS485
: A
Figure3-28
Connection diagram between communication port and smart meter
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).
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