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3.6
(Optional) Installing the Signal Cable
•
Not all inverter 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.
Communications Port Pin Definition
Pin Definition Function Description
1
485A1-1
RS485
differentia
l signal+
3
485B1-1
RS485
differentia
l signal–
5
PE
Shielding
ground
7
485A2
RS485
differentia
l signal+
9
485B2
RS485
differentia
l signal–
11 N/A
N/A
13 GND
GND
15
DIN5
Rapid
shutdown
signal+
Pin Definition Function
Used to cascade
2
inverters or connect
to the RS485 signal
port on the
4
SmartLogger
6
N/A
Used to connect to
8
an RS485 signal
port on a Smart
Power Sensor for
10
export limitation
N/A
12
14
Used to connect to
the rapid shutdown
16
DI signal port or
serve as a port for
the signal cable of
the NS protection.
10
485A1-2
RS485
differential
signal+
485B1-2
RS485
differential
signal–
PE
Shielding
ground
Dry contact
DIN1
interface for
grid
scheduling
DIN2
DIN3
DIN4
GND
Description
Used to cascade
inverters or
connect to the
RS485 signal port
on the
SmartLogger
N/A
N/A
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