9
(Optional) Installing the Signal Cable
3.6
• 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
Description
Pin
Definition Function
Description
1
485A1-1
RS485A, RS485
differential
Used to
connect to
the RS485
signal port
on the
SUN2000 or
SmartLogger
2
485A1-2
RS485A, RS485
differential
Used to
connect to
the RS485
signal port
on the
SUN2000 or
SmartLogger
3
485B1-1
RS485B, RS485
differential
signal
–
4
485B1-2
RS485B, RS485
differential
signal
–
5
PE
Shielding
ground
N/A
6
PE
Shielding ground
N/A
7
485A2
RS485A, RS485
differential
Used to
connect to
an RS485
signal port
on a device
such as a
Smart Power
Sensor or an
energy
storage
8
DIN1
Dry contact for
grid scheduling
N/A
9
485B2
RS485B, RS485
differential
signal
–
10
DIN2
11
EN
Enabling signal
Reserved.
Used to
connect to
the enable
signal port
on an energy
storage
device
12
DIN3
13
GND
GND
N/A
14
DIN4
15
DIN5
Rapid shutdown
Reserved.
16
GND
Communication Port Pin Definition
