Pin Deniti
on
Function Description
1 485B1 RS485B, RS485 dierential
signal–
Used to connect to the RS485 signal ports
of the cascaded inverters, the EMMA, or the
SmartGuard. When cascaded inverters and
the EMMA coexist, they share the 485B1
and 485A1 ports.
NOTE
● Inverters cannot be cascaded in the
SmartGuard networking.
2 485A1 RS485A, RS485 dierential
signal+
3 485B2 RS485B, RS485 dierential
signal–
Used to connect to the RS485 signal ports
on the batteries and power meters. When
batteries and power meters coexist, they
share the 485B2 and 485A2 ports.
4 485A2 RS485A, RS485 dierential
signal+
5 GND GND Used to connect to the GND of the enable
signal/DI1/DI2 of the battery.
6 EN+ Enable signal Used to connect to the enable signal of the
battery.
7 DI1 Digital input signal 1+ Used to connect to the positive terminal of
DI1. It can connect to the DRM0 scheduling
signal or serve as a port for rapid shutdown
signals.
8 DI2 Digital input signal 2+ Used to connect to the positive terminal of
DI2. It serves as the feedback signal port of
the SmartGuard.
9 GND GND Used to connect to the GND of the enable
signal/DI1/DI2 of the battery.
10 PE Shield layer grounding -
Communication Networking Mode
● Smart Dongle networking
Figure 5-14 Smart Dongle networking (the components in the dashed box
are optional)
SUN2000-(8K, 10K)-LC0 Series
User Manual 5 Electrical Connections
Issue 01 (2023-09-15) Copyright © Huawei Digital Power Technologies Co., Ltd. 55
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