Huawei SUN2000 3,6KTL-L1 - (Optional) Installing Signal Cables

11
(Optional) Installing Signal Cables
3.7
•
When laying out a signal cable, separate it from power cables to avoid strong signal
interference.
•
Ensure that the protective layer of the cable is inside the connector, that excess core wires
are cut off from the protection layer, that the exposed core wire is totally inserted into the
cable hole, and that the cable is connected securely.
•
Block the unused cable hole using a cap and tighten the cable gland.
•
If more than one signal cables are required, ensure that they have the same outer diameter.
COM port (COM)
COM Port Pin Definitions
No.
Label
Definition
Description
1
485
B
1
RS485B, RS485 differential signal–
Solar inverters cascading scenario: used for
connecting to the solar inverters.
2
485
A
1
RS485A, RS485 differential signal+
3
485
B
2
RS485B, RS485 differential signal–
Used for connecting to the RS485 signal ports of
the battery and power meter. When both battery
and power meter are configured, they need be
crimped
to the 485B2 and 485A2 ports.
4
485
A
2
RS485A, RS485 differential signal+
5
GND
GND of the enable
signal/12V/DI1/DI2
Used for connecting to GND of the enable
signal/12V/DI1/DI2.
6
EN+
Enable
signal+/12V+
Used for connecting to the enable signal of the
battery and the 12V positive signal.
7
DI
1
Digital
input signal 1+
Used to connect to the DI1 positive signal. It can be
used for connecting to the DRM0 scheduling signal
or serve as a port for the rapid shutdown signal.
8
DI
2
Digital
input signal 2+
Used to connect to the DI2 positive signal. It can
serve as a port for the feedback signal of the
Backup Box.
Crimping Two Signal Cables