Huawei SUN2000L-2KTL Quick Manual page 10

2. Connect the signal cables to SUN2000-(2KTL–6KTL)-L1.
COM Port Pin Definitions
No. Label Definition
1 - -
2 - -
3 485B2 RS485B, RS485
differential signal–
4 485A2 RS485A, RS485
differential signal+
5 GND Enable signal–/12V–
6 EN+ Enable signal+/12V+
7 - -
8 - -
Crimping Two Signal Cables
Crimping Three Signal Cables
Description
-
-
Connects to the RS485– signal port of batteries, smart power
sensors, and smart PV safety boxes. When batteries, smart
power sensors, and smart PV safety boxes coexist, they share
the 485B2–ports.
Connects to the RS485+ signal port of batteries, smart power
sensors, and smart PV safety boxes. When batteries, smart
power sensors, and smart PV safety boxes coexist, they share
the 485A2+ ports.
Connects to the enable signal GND of batteries and the 12 V
GND of smart PV safety boxes.
Connects to the enable signal positive electrode of batteries
and the 12 V positive electrode of smart PV safety boxes.
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