Sungrow SH5K-20, Руководство пользователя

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User Manual 6 Electrical Connection
57
STB5K-20
SH5K
DI
3
DI
2
DI
1
VD
D
Note:
For reconnection, press the part as shown in the red circle so as to pull out the
cable.
5. Fasten the swivel nut with a torque of 5 N

m–6 N

m and connect the
other end to the backup box.
6.10 DO Connection
The inverter has two DO relays with different functions as follows:
−
DO1: Consumer load control. In this case the Do relay will control a
contactor that will open or close in certain condition. Please choose the
appropriate contactor according to the load power, e.g. the contactor
types of the 3TF30 series from SIEMENS (3TF30 01-0X).
−
DO2: Earth fault alarm. In this case, the additional equipment required is a
light indicator and/or a buzzer.
Relay Trigger condition Description
Consumer
load control
The load control mode
has been set via the
LCD menu.
The relay is activated once the
conditions of the control mode are
satisfied. See “
10.4.10 Setting Load
Control ”.
Earth fault
alarm
The earth fault occurs.
Once the inverter receives the earth
fault signal, the relay closes the
contact. The relay remains triggered
until the fault is removed.