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

10/15
Note
Cross--circuit fault detection in the input module is not required. Measures against
cross--circuit faults are required only for equivalence contacts (NC contact/NC
contact, NO contact/NO contact) if the cable has been routed so that it is very
exposed, e.g. for cables connecting handheld terminals. This can be mechanically
implemented in the cable, e.g. using the appropriate shielding.
IM 151--1
High Feature
PROFIBUS
with PROFIsafe
Figure 7-6 Sensor connection using the 4--terminal concept
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.
© Siemens AG 2015 All Rights Reserved
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition
F--DI
VS 1
VS 2
Two circuit
Closed--circuit prin--
ciple (deactivation)
VS 1
VS 2
Double open
conductor loops
(activating)
Connecting Sensors/Actuators
7.1 Safety- -relevant input/output signals
ET 200S PROFIsafe
e.g.
Emergency
Stop
e.g. user
agreement
Equivalence
contacts (NC
contact/NC
contact) with
the 4--terminal
concept
Equivalence
contacts (NO
contact/NO
contact) with
the 4--terminal
concept
7-201