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BS ISO 21919-2:2021

BS ISO 21919-2:2021

$198.66

Physical device control. Interfaces for automated machine tending – Safety and control interface

Published By Publication Date Number of Pages
BSI 2021 54
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This document deals with the safety interface and control interface. It allocates signals to a conformance class and/or conformance option. It describes the detailed functions of each signal, describes and displays the timing interactions between signals in flow charts and shows examples for safety matrices and safety-related functional relationships.

This document defines three conformance classes and dedicated conformance options. Classes and options consist of a number of signals to:

  1. allow a flexible adaptation of the interface(s) to a project-specific scope of functions and simultaneously;

  2. tie sets of signals tight enough to avoid unnecessary coordination efforts between suppliers of the machine tending systems and machines.

PDF Catalog

PDF Pages PDF Title
2 National foreword
6 Foreword
7 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
10 4 Description of the interfaces
4.1 General
11 4.2 Characteristics of the interface
4.2.1 General
4.2.2 Conformance class
16 4.2.3 Conformance options
21 4.3 Safety interface
4.3.1 General
4.3.2 Principle approach and concept
4.3.3 Matrix for safety-related functional relationships
23 4.3.4 Distribution of performance levels and PFHD value
24 4.4 Control interface
5 Extension of the interfaces
5.1 General
5.2 Examples of project-specific extensions
5.2.1 General
5.2.2 Additional signals
5.2.3 More than one interference area
25 Annex A (normative) List of signals
26 Annex B (informative) Examples for safety matrices
39 Annex C (normative) Flow charts
52 Bibliography

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BS ISO 21919-2:2021
$198.66