1、 IEC/TR 62061-1 Edition 1.0 2010-07 TECHNICAL REPORT RAPPORT TECHNIQUE Guidance on the application of ISO 13849-1 and IEC 62061 in the design of safety-related control systems for machinery Lignes directrices relatives lapplication de lISO 13849-1 et de la CEI 62061 dans la conception des systmes de
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16、 ou si vous avez des questions, visitez le FAQ du Service clients ou contactez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC/TR 62061-1 Edition 1.0 2010-07 TECHNICAL REPORT RAPPORT TECHNIQUE Guidance on the application of ISO 13849-1 and IEC 62061 in the design of safety-rel
17、ated control systems for machinery Lignes directrices relatives lapplication de lISO 13849-1 et de la CEI 62061 dans la conception des systmes de commande des machines relatifs la scurit INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE R ICS 13.110; 25.040.99; 29.
18、020 PRICE CODE CODE PRIX ISBN 978-2-88912-042-0 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale 2 TR 62061-1 IEC:2010 CONTENTS FOREWORD.3 INTRODUCTION.5 1 Scope.6 2 General 6 3 Comparison of standards6 4 Risk estimat
19、ion and assignment of required performance .7 5 Safety requirements specification.7 6 Assignment of performance targets: PL versus SIL.8 7 System design9 7.1 General requirements for system design using IEC 62061 and ISO 13849-1 .9 7.2 Estimation of PFH Dand MTTF dand the use of fault exclusions 9 7
20、.3 System design using subsystems or SRP/CS that conform to either IEC 62061 or ISO 13849-1 10 7.4 System design using subsystems or SRP/CS that have been designed using other IEC or ISO standards .10 8 Example .10 8.1 General .10 8.2 Simplified example of the design and validation of a safety-relat
21、ed control system implementing a specified safety-related control function11 8.3 Conclusion 18 Bibliography19 Figure 1 Example implementation of the safety function.11 Figure 2 Safety-related block diagram13 Figure 3 Safety-related block diagram for calculation according to ISO 13849-1 13 Figure 4 L
22、ogical representation of subsystem D.15 Table 1 Relationship between PLs and SILs based on the average probability of dangerous failure per hour8 Table 2 Architectural constraints on subsystems maximum SIL CL that can be claimed for an SRCF using this subsystem .17 TR 62061-1 IEC:2010 3 INTERNATIONA
23、L ELECTROTECHNICAL COMMISSION _ GUIDANCE ON THE APPLICATION OF ISO 13849-1 AND IEC 62061 IN THE DESIGN OF SAFETY-RELATED CONTROL SYSTEMS FOR MACHINERY FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechni
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33、 publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or
34、all such patent rights. The main task of IEC technical committees is to prepare International Standards. However, a technical committee may propose the publication of a technical report when it has collected data of a different kind from that which is normally published as an International Standard,
35、 for example “state of the art“. IEC 62016-1, which is a technical report, has been prepared jointly by Technical Committee ISO/TC 199, Safety of machinery, and Technical Committee IEC/TC 44, Safety of machinery Electrotechnical aspects. The draft was circulated for voting to the national bodies of
36、both ISO and IEC. These technical committees have agreed that no modification will be made to this Technical Report except by mutual agreement 1 . 1This Technical Report is published at the ISO as ISO/TR 23849. 4 TR 62061-1 IEC:2010 The text of this technical report is based on the following documen
37、ts: Enquiry draft Report on voting 44/598/DTR 44/608/RVC Full information on the voting for the approval of this technical report can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. The committee has
38、decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or am
39、ended. TR 62061-1 IEC:2010 5 INTRODUCTION This Technical Report has been prepared by experts from both IEC/TC 44/WG 7 and ISO/TC 199/WG 8 in response to requests from their Technical Committees to explain the relationship between IEC 62061 and ISO 13849-1. In particular, it is intended to assist use
40、rs of these International Standards in terms of the interaction(s) that can exist between the standards to ensure that confidence can be given to the design of safety-related systems made in accordance with either standard. It is intended that this Technical Report be incorporated into both IEC 6206
41、1 and ISO 13849-1 by means of corrigenda that reference the published version of this document. These corrigenda will also remove the information given in Table 1, Recommended application of IEC 62061 and ISO 13849-1, provided in the common introduction to both standards, which is now recognized as
42、being out of date. Subsequently, it is intended to merge ISO 13849-1 and IEC 62061 by means of a JWG of ISO/TC 199 and IEC/TC 44. 6 TR 62061-1 IEC:2010 GUIDANCE ON THE APPLICATION OF ISO 13849-1 AND IEC 62061 IN THE DESIGN OF SAFETY-RELATED CONTROL SYSTEMS FOR MACHINERY 1 Scope This Technical Report
43、 is intended to explain the application of IEC 62061 and ISO 13849-1 2) in the design of safety-related control systems for machinery. 2 General 2.1 Both IEC 62061 and ISO 13849-1 specify requirements for the design and implementation of safety-related control systems of machinery 3) . The methods d
44、eveloped in both of these standards are different but, when correctly applied, can achieve a comparable level of risk reduction. 2.2 These standards classify safety-related control systems that implement safety functions into levels that are defined in terms of their probability of dangerous failure
45、 per hour. ISO 13849-1 has five Performance Levels (PLs), a, b, c, d and e, while IEC 62061 has three safety integrity levels (SILs), 1, 2 and 3. 2.3 Product standards (type-C) committees specify the safety requirements for safety-related control systems and it is recommended that these committees c
46、lassify the levels of confidence required for them in terms of PLs and SILs. 2.4 Machinery designers may choose to use either IEC 62061 or ISO 13849-1 depending on the specific features of the application. 2.5 The selection and use of either standard is likely to be determined by, for example: previ
47、ous knowledge and experience in the design of machinery safety-related control systems based upon the concept of categories described in ISO 13849-1:1999 can mean that the use of ISO 13849-1:2006 is more appropriate; safety-related control systems based upon media other than electrical can mean that
48、 the use of ISO 13849-1 is more appropriate; customer requirements to demonstrate the safety integrity of a machine safety-related control system in terms of a SIL can mean that the use of IEC 62061 is more appropriate; safety-related control systems of machinery used in, for example, the process in
49、dustries, where other safety-related systems (such as safety instrumented systems in accordance with IEC 61511) are characterized in terms of SILs, can mean that the use of IEC 62061 is more appropriate. 3 Comparison of standards 3.1 A comparison of the technical requirements in ISO 13849-1 and IEC 62061 has been carried out in respect of the following aspects: 2) This Technical Report considers ISO 13849-1
