6 Electrical Connection User Manual
48
6.8 DO Connection
The inverter has two DO relays with different functions as follows:
− DO1: Consumer load control. 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
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 “10.7.7 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.
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