Safety of machinery - Guidelines for the use of communication systems in safety-related applications

It addresses the application of closed serial digital communications systems (often termed fieldbuses) used for transmission of safety-related data in the realisation of safety functions at machinery. It offers guidance on the issues that need to be considered during the specification, system design, installation, commissioning, modification and maintenance of such applications. It assumes that the SRECS safety requirements specification (SRS) has been developed and the design of the SRECS (Safety-Related Electrical Control Systems) is intended to include a safety-related communication system. This Technical Report is intended to be used in conjunction with IEC 62061.

Sécurité des machines - Lignes directrices pour l'usage de systèmes de communication dans les applications liées à la sécurité

traite de l'application des systèmes de communication numériques de série fermés (souvent désignés par bus de terrain) utilisés pour la transmission des données relatives à la sécurité dans la réalisation des fonctions de sécurité au niveau des machines. Il propose un guide sur les questions qui doivent être prises en compte au cours de la spécification, de la conception du système, de l'installation, de la mise en service, de la modification et de la maintenance de telles applications. suppose que la spécification des exigences de sécurité (SRS, safety requirements specification) du SRECS (système de commande électrique relatif à la sécurité, safety-related electrical control system) a été élaborée et que la conception du SRECS est destinée à inclure un système de communication relatif à la sécurité. Le présent rapport technique est destiné à être utilisé conjointement avec la CEI 62061.

General Information

Status
Published
Publication Date
26-Feb-2008
Current Stage
PPUB - Publication issued
Start Date
15-Apr-2008
Completion Date
27-Feb-2008
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IEC TR 62513:2008 - Safety of machinery - Guidelines for the use of communication systems in safety-related applications
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IEC/TR 62513
Edition 1.0 2008-02
TECHNICAL
REPORT
RAPPORT
TECHNIQUE
Safety of machinery – Guidelines for the use of communication systems in
safety-related applications
Sécurité des machines – Lignes directrices pour l’usage de systèmes de
communication dans les applications liées à la sécurité

IEC/TR 62513:2008
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IEC/TR 62513
Edition 1.0 2008-02
TECHNICAL
REPORT
RAPPORT
TECHNIQUE
Safety of machinery – Guidelines for the use of communication systems in
safety-related applications
Sécurité des machines – Lignes directrices pour l’usage de systèmes de
communication dans les applications liées à la sécurité

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
U
CODE PRIX
ICS 13.110; 29.020; 35.100 ISBN 2-8318-9614-2

– 2 – TR 62513 © IEC:2008
CONTENTS
FOREWORD.4
INTRODUCTION.6

1 Scope.7
2 Normative references .7
3 Terms and definitions .7
4 Management of functional safety .11
4.1 Requirements of IEC 62061.11
5 Realisation of a safety-related electrical control system (SRECS) using a safety-
related communication system.12
6 Planning of the safety-related communication system.13
6.1 System design.13
6.1.1 Safety integrity level (SIL) assigned to the SRCF(s) and the safety-
related communication system.13
6.1.2 Configuration and parameterisation of the safety-related
communication system .13
6.1.3 Response time and protective measures .13
6.1.4 Fault monitoring and alarm indication .14
6.1.5 Assuring functional safety in case of SRECS failure .14
6.2 Selection criteria of the safety-related communication system .15
6.2.1 Architecture and application fields .15
6.2.2 Maximum response time .15
6.2.3 Transmission distance, transmission speed and the number of nodes .16
6.2.4 Environmental conditions.16
6.2.5 Setting and configuration tools .16
7 System installation and setup (configuration).16
7.1 System installation .16
7.1.1 System confirmation .16
7.1.2 Safety-related communication system wiring .16
7.1.3 Selection of power supply.17
7.1.4 Environmental conditions.18
7.2 Setting .18
7.2.1 System configuration .18
7.2.2 Setting for operation .18
7.2.3 Setting and modification of configuration data .19
8 Validation .19
8.1 Checks before applying the power.19
8.2 Validation after applying the power.19
8.3 Functional tests.19
8.4 Baseline .20
9 Documentation .20
10 Operation, maintenance and repair.21
10.1 Appointment of responsible person.21
10.2 Developing a maintenance plan.21
10.3 Implementing periodic maintenance .21
10.4 Items of maintenance work.21

TR 62513 © IEC:2008 – 3 –
10.5 Record of maintenance results .21
11 Education and training.22
11.1 General .22
11.2 Scope.22
11.3 Performing continual education and training .22
11.4 Contents of education and training .22
11.5 Planning of educational activities and storage of education records.22

Annex A (informative) Design of a SRECS using a safety-related communication
system – Function blocks concept.23

Bibliography.28

Figure 1 – SRECS design and development flow .12
Figure 2 – System Response Time Components .13
Figure A.1 – Components of a SRECS.23
Figure A.2 – SRECS using a safety-related communication system .24
Figure A.3 – Different views of the safety-related communication system.25
Figure A.4 – Examples of typical architectures of safety-related communication
systems .26

– 4 – TR 62513 © IEC:2008
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SAFETY OF MACHINERY –
GUIDELINES FOR THE USE OF COMMUNICATION SYSTEMS
IN SAFETY-RELATED APPLICATIONS

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
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agreement between the two organizations.
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consensus of opinion on the relevant subjects since each technical committee has representation from all
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