Huawei SUN2000-17KTL - Page 39

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3. Connect the signal cable connector to the communications port.
Communications
port (COM)
(Optional) Connecting the Signal Transfer Cable
4.2
If the signal cables are not long enough to connect to the inverter communications port,
connect a signal transfer cable.
Signal Definitions of the Terminal Block in the AC Adapter Box
Inverter
Customer
Port
Reser
ved
RS485
-1
RS485-
2
Ripple
Control
Definit
ion
(Invert
er)
–
A1
-1
A1
-2
A2
DIN1
DIN3
GND
–
B1
-1
B1
-2
B2
DIN2
DIN4
–
Definit
ion
(
Custo
mer)
–
B
-IN
B
-OUT
B2
DIN2
DIN4
–
–
A
-IN
A
-OUT
A2
DIN1
DIN3
GND
No.
Definition
No.
Definition
1
485A1
-1
2
485A1
-2
3
485B1
-1
4
485B1
-2
5
–
6
–
7
485A2
8
DIN1
9
485B2
10
DIN2
11
–
12
DIN3
13
–
14
DIN4
15
–
16
GND
COM Port Signal Definitions