Connection of the Components
5.2 Line Contactor Control
Guide for the SINUMERIK 840D sl machine configuring
5-8 Manual, 07/2006 Edition, 6FC5397-6CP10-0BA0
5.2 5.2 Line Contactor Control
The line contactor is used for the electrical isolation of the DC link from the energy supply
system.
5.2.1 Line Contactor Control for Line Modules without DRIVE-CLiQ Interface
If a line contactor is required for Line Modules without DRIVE-CLiQ interface, it must be
controlled and monitored using an external controller. An appropriate activation and
deactivation sequence must be observed here otherwise the line contactor or the Line
Module can be damaged.
A largely load-free switching of the line contactor must be provided for the control of the line
contactor.
Activation:
Once the line contactor has been activated and a feedback is present, the enable pulse of
the -X21:3/4 terminal can be made.
Deactivation:
The deactivation of the line contactor may only be made in a specific timing for the enable
pulse (-X21:3/4) and/or ready (-X21:1) signals.
● Enable pulse (EP):
A deactivation of the line contactor may only be made when the enable pulse (EP) signal
has been removed previously (t ≥ 10 ms). The current is removed during the delay time.
● Ready:
When the ready message leaves the SLM, if required, the line contactor may only be
deactivated after a delay time (t ≥ 10 ms). The current is removed during the delay time.
(3
WW PV
5'<
WW PV
16 16
Figure 5-6 Line contactor control signal chart
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