Sungrow SG33CX User Manual page 61

User Manual
逆变器
Inverter interior
NC COM
逆变器
Inverter interior
NC COM
Devices connected to the relay should comply with related requirements:
AC-Side Requirements
Max. voltage: 250Vac
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 dry contacts only support passive switch signal input.
The following figure shows the typical application of local stop dry contact.
Free of fault,
relay does not trip.
Circuit is disconnected, and
LED indicator is off
NO
Fig. 5-5 Normal open contact
Free of fault, relay does not
trip.
Circuit is connected, and LED
indicator is steady on
NO
Fig. 5-6 Normal close contact
Inverter interior
Fault occurs, relay trips.
Circuit is connected, and
LED indicator gets on
NC COM NO
Inverter interior
Fault occurs, and relay
Circuit is disconnected,
and LED indicator gets off.
NC COM NO
DC-Side Requirements
Max. voltage: 30Vdc
Max. current: 5A
5 Electrical Connection
trips.
51