Sungrow SG320HX, User Manual

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5.10 Dry Contact Connection(COM2)
Communication terminal COM2 is optional, subject to actual product received.
5.10.1 Interface Description
The inverter communication terminal COM2 is located at the bottom of the inverter, as
shown in the figure below.
table 5-7 Communication terminal COM2 definition
Port PIN Definition
Description
/ 1 /
/ 2 /
DI
3 DI
emergency stop dry contact
4 PGND
D0
5 COM
fault output dry contact
6 NC
7 NO
/ 8 /
5.10.2 Dry Contact Function
DI terminal (emergency stop dry contact): the dry contact can be configured to be an
emergency stop contact.
When the DI contact and PGND contact are shorted by external controlled switch (The ex-
ternal switch can be configured as normally open contact or normally closed contact), the in-
verter will immediately stop.
The dry contacts only support passive switch signal input.
The following figure shows the typical application of emergency stop dry contact.
User Manual 5 Electrical Connection