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6.10.5
Line contactor control
Overview
A line contactor disconnects the converter from the line supply, and therefore reduces the
converter losses when the motor is not operational.
Function description
The converter controls its own line contactor using a digital output. The line contactor control
requires a 24 V power supply from the converter. The 24 V power supply must be maintained
even when the line contactor is open.
Figure 6-104
Activating the line contactor control
In order for the converter to control line contactor K1 using one of its own digital outputs, you
must interconnect the digital output with signal r0863.1, e.g. for DO 0: p0730 = 863.1.
Line contactor control with feedback signal
Interconnect p0860 with the signal of the corresponding digital input:
● p0860 = 722.x: Feedback signal of an NO contact via DIx
● p0860 = 723.x: Feedback signal of an NC contact via DIx
SINAMICS G120X converter
Operating Instructions, 06/2019, FW V1.01, A5E44751209B AC
Line contactor control via DO 0 with feedback signal via DI 3
Advanced commissioning
6.10 Energy saving
451
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