Layout Of Application Examples - Siemens SIRIUS 3RT Manual

Configuration
6.11 Contactors in safety applications
6.11.2.3

Layout of application examples

Safety function
A safety function consists of the three subfunctions "detecting", "evaluating" and "reacting".
Sensors detect the state of a plant.
The contactor with fail-safe control input is controlled via the fail-safe control input in all
applications. The switching state and the wiring for the control is monitored by means of the
subfunction "evaluating".
The examples in the following sections focus on "reacting". "Detecting" is represented here
by an EMERGENCY STOP function. "Evaluating" is illustrated here with the example of a
safety relay or an F-PLC.
Description
This section lists the most important features of the respective application, and the maximum
Safety Integrity Level (SILCL) as per IEC 62061 or Performance Level (PL) and Category
(Cat.) as per EN ISO 13849-1 that can be achieved.
Application
Here you will find a simplified graphical representation with the components used to
implement the safety function. It is split into the "detecting", "evaluating" and "reacting"
subsystems.
Circuit diagram
The characteristics of the inputs and outputs shown in the graphic equally apply to other
input terminals and output terminals of the respective subfunctions. The wiring can be
adapted for all equivalent terminals. The rules from the documentation of the respective
components must be observed.
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SIRIUS - SIRIUS 3RT Contactors/Contactor assemblies
Manual, 09/2017, A5E03656507120A/RS-AE/006