Huawei SUN2000-3KTL-M0 Quick Manual page 12

3.6
(Optional) Installing the Signal Cable
•
Not all SUN2000 models are delivered with
the signal cable connector.
•
When laying out the signal cable, separate it
from the power cable and keep it away from
strong interference sources to avoid strong
communication interference.
•
Ensure that the protection layer of the cable is
inside the connector, surplus core wires are
cut off from the protection layer, the exposed
core wire is totally inserted into the cable hole,
and that the cable is connected securely.
•
If the Smart Dongle is configured, you are
advised to install the Smart Dongle before
connecting the signal cable.
Pin Definition Function
RS485A,
RS485
1 485A1-1
differential
signal+
RS485B,
RS485
3 485B1-1
differential
signal–
Shielding
5 PE
ground
RS485A,
RS485
7 485A2
differential
signal+
RS485B,
RS485
9 485B2
differential
signal–
Enabling
11 EN
signal
13 GND GND
Rapid
15 DIN5
shutdown
Description Pin
Used to
2
cascade
inverters or
connect to the
RS485 signal
port on the
4
SmartLogger
N/A 6
Used to
connect to the
8
RS485 signal
port on devices
such as the
Smart Power
Sensor and the
10
energy storage
device
Reserved.
Used to
connect to the
enable signal 12
port on an
energy storage
device
N/A 14
Reserved. 16
10
Communication Port Pin Definition
Definition Function
RS485A,
RS485
485A1-2
differential
signal+
RS485B,
RS485
485B1-2
differential
signal–
Shielding
PE
ground
DIN1
DIN2
Dry contact
for grid
scheduling
DIN3
DIN4
GND
Description
Used to
cascade
inverters or
connect to
the RS485
signal port
on the
SmartLogger
N/A
N/A