Typical circuit diagrams
7.4 Circuit Manual Group =2
Guide for the SINUMERIK 840D sl machine configuring
7-12 Manual, 07/2006 Edition, 6FC5397-6CP10-0BA0
7.4 7.4 Circuit Manual Group =2
Drive group without safety, with line contactor
● Power supply of the NCU 710 (=2.-K11)
● Control signals to the NCU 710 (=2.-K11)
● DRIVE-CLiQ connection to the power units
● PROFIBUS connection to the distributed peripherals (=2.-K31)
● Control signals to the distributed peripherals
● Control of the line contactor (=2.-Q15) by the Control Unit
● Supply and control of the Line Module (=2.-Q51), including the integration of the auxiliary
contact of the main power switch
● Supply and control of the Single Motor Modules (=2.-Q61; =2.-Q51)
● Connection of the motor, holding brake and SMC20 sensor system to the Motor Module
(=2.-K66; =2.-K76)
Application
The drive group consists of the NCU 7x0 Control Unit (=2.-K11), the Line Module (=2.-Q51)
and two Motor Modules (=2.-Q61/Q71).
The communications, open- and closed-loop control functions for the complete drive group,
consisting, for example, of the Active Line Module and Motor Modules, can run in the Control
Unit, where the Control Unit is always designed for a multi-axis operation. DRIVE-CLiQ is
used for the communication between the Control Unit and the connected SINAMICS
components.
Functions
● Signal exchange between the NCU 710 Control Unit and the PLC
● Interlocking of external status and fault signals
External fault signals, such as the monitoring of the safety cut-outs (=1.-F42, F44, F45),
circuit-breakers (=1.-Q31, Q41), etc., may also need to be interlocked with the On/Off
command. Signals can be visualized appropriately on the Operator Panel.
● Interlocking of component states and system signals
Depending on their information and importance, some internal status signals can or must
be linked with the On/Off command, controller enable, etc.
● Line contactor control
An internal control logic handles the control and monitoring of the optional line contactor
(=2.-Q15). The line contactor is switched depending on the On/Off and enable signals of
the Active Line Module.
● Enable signal from the Active Line Module
The protective circuit of the Enable Pulses digital input (-X21: 3/ 4) is required for the
Active Line Module (=2.-Q51). Before the main power switch is used to switch off the
drive group, the Enable Pulses input on the Active Line Module must be disabled, for
example, using a leading (<=10 ms) auxiliary switch on the main power switch.
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