Sungrow SG30CX, Руководство пользователя

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figure 5-7 Normally open contact
figure 5-8 Normally closed contact
Devices connected to the relay should comply with related requirements:
AC-Side Requirements DC-Side Requirements
Max. voltage: 250 Vac
Max. current: 5A
Max. voltage: 30Vdc
Max. current: 5A
DI terminal (emergency stop dry contact): the dry contact can be configured to be an
emergency stop contact.
When the DI contact and GND contact are shorted by external controlled switch (The exter-
nal switch can be configured as normally open contact or normally closed contact), the inver-
ter will immediately stop.
NS terminal: NS Protection is currently used for German market. For plant sized more than
30kVA, inverter NS Protection terminals could be used in daisy chain to external NS Protec-
tion Relay to realize emergency stop when NS Protection Relay change its dry contact sta-
tus due to the grid abnormal running status.
NS Protection (including Passive Valid) can be set. When NS Protection is enabled on the
iSolarCloud, the inverters will operate normally when DI contact and GND contact are
shorted by external controlled switch, and the inverters will emergently stop when DI contact
and GND contact are disconnected.
The dry contacts only support passive switch signal input.
The following figure shows the typical application of local stop dry contact.
User Manual 5 Electrical Connection