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Sungrow SG320HX - Dry Contact Function

Sungrow SG320HX
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69
table 5-6 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.
figure 5-7 Local stop contact
When wiring DI dry contacts, ensure that the maximum wiring distance meet the require-
ments in "9.2 Wring Distance of DI Dry Contact".
User Manual 5 Electrical Connection

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