Sungrow SG33CX, Руководство пользователя

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User Manual 5 Electrical Connection
51
Free of fault,
relay does not trip.
Circuit is disconnected, and
LED indicator is off
COM NO NC
逆变器
Fault occurs, relay trips.
Circuit is connected, and
LED indicator gets on
COM NO NC
Inverter interior
Inverter interior
Fig. 5-5 Normal open contact
Free of fault, relay does not
trip.
Circuit is connected, and LED
indicator is steady on
COM NO NC
逆变器
Fault occurs, and relay
trips.
Circuit is disconnected,
and LED indicator gets off.
COM NO NC
Inverter interior
Inverter interior
Fig. 5-6 Normal close contact
Devices connected to the relay should comply with related requirements:
AC-Side Requirements DC-Side Requirements
Max. voltage: 250Vac
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 inverter will immediately stop.
The following figure shows the typical application of local stop dry contact.
The dry contacts only support passive switch signal input.