Sungrow SG320HX, Руководство пользователя

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figure 5-7 Local stop contact
When wiring DI dry contacts, ensure that the maximum wiring distance meet the require-
ments in " 10.2 Wring Distance of DI Dry Contact " .
DO terminal (fault output dry contact): the relay can be set to fault alarm output, and user
can configure it to be a normal open contact (COM ＆ NO) or a normal close contact (COM ＆
NC).
The relay is initially at the NC terminal, and it will trip to another contact when a fault occurs.
Use LED indicators or other equipment to indicate whether the inverter is in the faulty state.
figure 5-8 Normal open contact
figure 5-9 Normal close contact
Devices connected to the relay should comply with related requirements:
5 Electrical Connection User Manual