Line Contactor Control - Siemens SINAMICS G120 Operating Instructions Manual

6.33

Line contactor control

A line contactor disconnects the inverter from the line supply, and therefore reduces the inverter
losses when the motor is not operational.
The inverter can control its own line contactor using a digital output. You must supply the
inverter with 24 V so that the line contactor control of the inverter also functions when
disconnected from the line supply.
Activate line contactor control
Figure 6-80
In order that the inverter controls line contactor K1 using one of its own digital outputs, you
must interconnect the digital output with signal r0863.1 e.g. for DO 2: p0732 = 863.1.
Line contactor control with feedback signal
Interconnect p0860 with the signal of the corresponding digital input.
Figure 6-81
If the line contactor feedback signal is not available for longer than the time set in p0861, then
the inverter signals fault F07300.
Converter with the CU250S-2 Control Units
Operating Instructions, 04/2018, FW V4.7 SP10, A5E31759476B AG
Line contactor control via DO 2 with feedback signal via DI 3
Line contactor control via DO 2 with feedback signal via DI 3
Advanced commissioning
6.33 Line contactor control
355