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3 Useful information
freedom from systematic faults. It is expressed in the standards using different
terms:
•
In IEC 62061: "Safety Integrity Level" (SIL)
•
In ISO 13849-1: "Performance Level" (PL)
You can find more information on functional safety under
3.2
Assessment of the safety function
3.2.1
Standards
The following versions of the standards were used to evaluate the safety function:
Table 3-1: Standards
EN ISO 13849-1:2015
EN ISO 13849-2:2012
EN 62061:2005/A2:2015
3.2.2
Safety function
The following considerations are based on the following safety function:
Table 3-2 Safety functions
The safety functions SF1 and SF2 are evaluated below according to the
ISO 13849-1, ISO 13849-2 and IEC 62061 standards.
The "Reaction" subsystem is not considered in more detail in this application
example, as we are only concerned here with connection and evaluation of
inductive, clocking sensors.
3.2.3
Evaluation according to ISO 13849-1
An evaluation according to ISO 13849-1 was performed with the Safety Evaluation
in the TIA Selection Tool: You can find a link to the Safety Evaluation in the TIA
Selection Tool on the internet at \11\.
3.2.3.1
Safety function SF1
The individual subsystems of the safety function are explained below.
Inductive clocking sensor
Entry ID: 109818998,
V1.0,
Version
Safety function
SF1
"Safe detection"
ET 200MP
SF2
"Safe detection"
ET 200SP
05/2023
"\10\".
Named below
ISO 13849-1
ISO 13849-2
IEC 62061
Description
When the sensor detects a piece of
metal, it sends an enable signal.
When the sensor detects a piece of
metal, it sends an enable signal.
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