Multiple Distribution And Multiple Interlocking - Siemens SINUMERIK 840D sl Function Manual

03.06
7.1.5

Multiple distribution and multiple interlocking

Interlocking functions between the SGE/SGA are implemented in the NCK channel
in the NCK-SPL. However, in order to relieve the NCK-SPL, it is also possible to
pre-process signals between the NCK-SPL and NCK monitoring channel using the
"multiple distribution" and "multiple interlocking" functions.
Note
The multiple distribution/interlocking that can be parameterized in the NCK
machine data must be programmed by the user on the PLC side.
Processing the NCK-SGEs for 840D sl (multiple distribution)
Axis-specific/spindle-specific machine data is used to define which internal SPL
output is to be used for which function and which axis/spindle. Under the condition
that certain axes/spindles belong to the same safety group, it is possible to imple-
ment multiple distribution (1 NCK-SPL output is assigned, for example, to 3 axes
with the same function). In addition, when an internal NCK-SPL output is selected
via MD, it is also possible to define whether the inverted signal is also to be pro-
cessed.
NCK-SPL
OUTSI
Output 1
Output 2
Output x
...
Output n
Fig. 7-8
© Siemens AG, 2006. All rights reserved
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) – 03.2006 Edition
Multiple
distribution
...
...
...
...
...
Multiple distribution for NCK––SGE
Connecting Sensors/Actuators
7.1 Safety-relevant input/output signals
NCK
SGE/SGA
Inversion Inversion
interface
... ...
SGE ...
yes/no
... ...
... ...
SGE ...
yes/no
...
...
...
...
SGE ...
yes/no
... ...
...
Monitoring
comparators
for axis 1
for axis 2
for axis 3
7-175