Signal Interconnection
6.6 Application 6
Guide for the SINUMERIK 840D sl machine configuring
Manual, 07/2006 Edition, 6FC5397-6CP10-0BA0
6-17
Interconnection to the NCU component
● "Infeed ready" (NCU terminal X132.8)
The infeed is ready when the "1" signal is on.
● "ON/OFF1 Line Module" (NCU terminal X122.1)
The 0/1 edge activates the infeed. The "Infeed Ready" signal (NCU terminal X132.8) is
used for the control.
● "2. OFF3" for all axes (NCU terminal X122.2)
The "2. OFF3" will be forwarded to all axes of the NCU. The input is hard-wired with the
24 VDC.
Interconnection to the NX component
● "2. OFF3" for all axes (NCU terminal X122.2)
The "2. OFF3" will be forwarded to all axes of the NX. The input is hard-wired with the 24
VDC.
Interconnection between NCU and NX components
● After activating the infeed, given correct operation, the "Infeed operation" state will be
attained and all axes (BI: p0864) will be enabled. This status must also be forwarded to
the NX components (NCU terminal X132.7 and NX terminal: X122.1).
Operation of the infeed
After the NCU startup, the infeed is activated automatically.
Realization of the safety control
The system/drive-integrated safety function performs this task. External safety relays or
safety controllers are thus no longer required. The terminal control of the SH/SBC using
NCU/NX functions and Motor Modules is no longer essential because this function is
controlled by the system.
The SINAMICS ("Safe Standstill" and "Safe Brake Control") safety functions satisfy the
requirement for safety integrity level 2 (SIL2) in accordance with IEC 61508. This
corresponds to the control category 3 in accordance with DIN EN 954-1 and DIN VDE 0801.
The "Safe Standstill" function prevents an unwanted starting from standstill of the motor
connected to the drive device.
The need for a line contactor for the safe separation of the energy supply to the motor is no
longer assured.
Notice
When servicing work is performed, power must be removed and possibly the main power
switch turned off.
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