Line Contactor Control - Siemens SINAMICS G120 Operating Instructions Manual

Advanced commissioning

6.38 Line contactor control

6.38 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 6-68
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 inverted signal of a digital input: p0860 = 723.x.
Figure 6-69
If the line contactor feedback signal is not available for longer than the time set in p0861, then
the inverter signals fault F07300.
Line contactor control without feedback signal
Interconnect the feedback signal with the signal to control the line contactor: p0860 = 863.1.
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Line contactor control via DO 2 with feedback signal via DI 3
Line contactor control via DO 2 with feedback signal via DI 3
Converter with the CU230P-2 Control Units
Operating Instructions, 09/2017, FW V4.7 SP9, A5E34257946B AE