SIST EN 61810-2-1:2018

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Osnovni elektromehanski releji - 2-1. del: Zanesljivost - Postopki za overjanje vrednosti B10Elektromechanische Elementarrelais - Teil 2-1: Funktionsfähigkeit (Zuverlässigkeit) - Verfahren zum Nachweis der B10-WerteRelais électromécaniques élémentaires - Partie 2-1: Fiabilité - Procédure de vérification des valeurs de B10Electromechanical elementary relays - Part 2-1: Reliability - Procedure for the verification of B10 values29.120.70RelejiRelaysICS:Ta slovenski standard je istoveten z:EN 61810-2-1:2017SIST EN 61810-2-1:2018en01-januar-2018SIST EN 61810-2-1:2018SLOVENSKI
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SIST EN 61810-2-1:2018



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 61810-2-1
October 2017 ICS 29.120.70
Supersedes
EN 61810-2-1:2011
English Version
Electromechanical elementary relays - Part 2-1: Reliability - Procedure for the verification of B10 values (IEC 61810-2-1:2017)
Relais électromécaniques élémentaires -
Partie 2-1: Fiabilité - Procédure de vérification des valeurs de B10 (IEC 61810-2-1:2017)
Elektromechanische Elementarrelais -
Teil 2-1: Funktionsfähigkeit (Zuverlässigkeit) - Verfahren zum Nachweis der B10-Werte (IEC 61810-2-1:2017) This European Standard was approved by CENELEC on 2017-07-04. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17,
B-1000 Brussels © 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 61810-2-1:2017 E SIST EN 61810-2-1:2018



EN 61810-2-1:2017 2 European foreword The text of document 94/416/FDIS, future edition 2 of IEC 61810-2-1, prepared by IEC/TC 94 "All-ornothing electrical relays" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 61810-2-1:2017.
The following dates are fixed: • latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2018-04-06 • latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2020-10-06
This document supersedes EN 61810-2-1:2011.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Endorsement notice The text of the International Standard IEC 61810-2-1:2017 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have to be added for the standards indicated:
ISO 13849-2:2012 NOTE Harmonized as EN ISO 13849-2:2012 (not modified). SIST EN 61810-2-1:2018



EN 61810-2-1:2017 3 Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
NOTE 1
Where an International Publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies.
NOTE 2
Up-to-date information on the latest versions of the European Standards listed in this annex is available here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 61810-1 2015
Electromechanical elementary relays -
Part 1: General and safety requirements EN 61810-1 2015
IEC 61810-2 2017
Electromechanical elementary relays -
Part 2: Reliability EN 61810-2 2017
IEC 61810-3 -
Electromechanical elementary relays -
Part 3: Relays with forcibly guided (mechanically linked) contacts EN 61810-3 -
IEC 62061 -
Safety of machinery - Functional safety
of safety-related electrical, electronic and programmable electronic control systems EN 62061 -
ISO 13849-1 2015
Safety of machinery - Safety-related parts of control systems -
Part 1: General principles for design EN ISO 13849-1 2015
SIST EN 61810-2-1:2018



SIST EN 61810-2-1:2018



IEC 61810-2-1 Edition 2.0 2017-05 INTERNATIONAL STANDARD NORME INTERNATIONALE Electromechanical elementary relays –
Part 2-1: Reliability – Procedure for the verification of B10 values
Relais électromécaniques élémentaires –
Partie 2-1: Fiabilité – Procédure de vérification des valeurs de B10
INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE
ICS 29.120.70
ISBN 978-2-8322-4389-3
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale ®
Warning! Make sure that you obtained this publication from an authorized distributor.
Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé. SIST EN 61810-2-1:2018



– 2 – IEC 61810-2-1:2017 © IEC 2017 CONTENTS FOREWORD . 3 INTRODUCTION . 5 1 Scope . 6 2 Normative references . 6 3 Terms and definitions . 6 3.2 Definitions related to tests . 7 4 Verification of B10 . 7 4.1 General . 7 4.2 Requirements . 7 4.2.1 Test specimens . 7 4.2.2 Test circuit . 8 4.2.3 Contact loads . 8 4.2.4 Environmental conditions . 8 4.2.5 Operating conditions . 8 4.2.6 Failure criteria . 8 4.3 Performance of the tests . 9 4.3.1 Type test . 9 4.3.2 Routine test . 9 5 Evaluation and verification of B10D . 9 5.1 General . 9 5.2 Requirements . 10 5.2.1 Test specimens . 10 5.2.2 Test circuit . 10 5.2.3 Contact loads . 11 5.2.4 Environmental conditions . 11 5.2.5 Operating conditions . 11 5.2.6 Failure criteria . 11 5.3 Performance of the tests . 12 5.3.1 Type test . 12 5.3.2 Routine test . 12 Annex A (informative)
Example illustrating the assessment of malfunctions for B10D evaluation . 15 A.1 Purpose . 15 A.2 Basic assumptions . 15 A.3 Example. 15 A.4 Evaluation . 16 Bibliography . 17
Figure 1 – Schematic flowchart . 13 Figure 2 – Schematic flowchart for relays where
dangerous failures have to be assessed . 14
Table A.1 – Example with number of cycles at which malfunctions have been recorded . 15
SIST EN 61810-2-1:2018



IEC 61810-2-1:2017 © IEC 2017 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________
ELECTROMECHANICAL ELEMENTARY RELAYS –
Part 2-1: Reliability – Procedure for the verification of B10 values
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-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.
8) Attention is drawn to the Normative references cited in this 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 all such patent rights. International Standard IEC 61810-2-1 has been prepared by IEC technical committee 94: All-or-nothing electrical relays. This second edition cancels and replaces the first edition published in 2011. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) limitation of tests to 10 M cycles in Clause 5; b) reduction of required number of test samples to 5 in specified cases; c) introduction of WeiBayes analysis for routine test under Clause 4. SIST EN 61810-2-1:2018



– 4 – IEC 61810-2-1:2017 © IEC 2017 The text of this International Standard is based on the following documents: FDIS Report on voting 94/416/FDIS 94/419/RVD
Full information on the voting for the approval of this International Standard can be found in the report on voting indicated in the above table. This document has been drafted in accordance with the ISO/IEC Directives, Part 2. This International Standard is to be used in conjunction with IEC 61810-2:2017. A list of all parts in the IEC 61810 series, published under the general title Electromechanical elementary relays, can be found on the IEC website. The committee has decided that the contents of this document will remain unchanged until the stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to the specific document. At this date, the document will be
• reconfirmed, • withdrawn, • replaced by a revised edition, or • amended.
SIST EN 61810-2-1:2018



IEC 61810-2-1:2017 © IEC 2017 – 5 –
INTRODUCTION Based on the general provisions of IEC 61810-2, this part of IEC 61810 specifies reliability test procedures for electromechanical elementary relays where enhanced requirements for the verification of reliability apply. A type test is passed and then confirmed by routine tests with specified periodicity. This document describes how figures for B10 (the mean number of cycles until 10 % of the relays have failed) are derived from these life tests performed with representative relay samples. In particular when electromechanical elementary relays are intended to be incorporated in safety-related control systems of machinery in accordance with IEC 62061 and ISO 13849-1, the mean time to dangerous failure (MTTFd) is a measure that can be taken into account when assessing the probability of dangerous failure of the safety function concerned. Although a component failure cannot be defined as “dangerous” unless the detailed application is known, it is common to consider a failure mode that is likely to result in danger in a typical application of the component, and to refer to this failure mode as a “dangerous failure”. The MTTFd then becomes the expectation of the mean time to failure in this "dangerous" mode. For the calculation of MTTFd for electromechanical relays, the data provided by the manufacturer for B10D can be used (see Clause C.4 of ISO 13849-1:2015). Electromechanical elementary relays with forcibly guided (mechanically linked) contacts offer the possibility of a high diagnostic coverage according to 4.5.3 of ISO 13849-1:2015. NOTE Requirements for such relays are given in IEC 61810-3.
SIST EN 61810-2-1:2018



– 6 – IEC 61810-2-1:2017 © IEC 2017 ELECTROMECHANICAL ELEMENTARY RELAYS –
Part 2-1: Reliability – Procedure for the verification of B10 values
1 Scope This part of IEC 61810 specifies reliability test procedures for electromechanical elementary relays when enhanced requirements for the verification of reliability apply. Particular provisions are given for relays incorporated in safety-related control systems of machinery in accordance with IEC 62061 and ISO 13849-1. For such relays, B10 values for dangerous failures (B10D values) are derived from the tests specified in this document. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 61810-1:2015, Electromechanical elementary relays – Part 1: General and safety requirements IEC 61810-2:2017, Electromechanical elementary relays – Part 2: Reliability IEC 61810-3, Electromechanical elementary relays – Part 3: Relays with forcibly guided (mechanically linked) contacts IEC 62061, Safety of machinery – Functional safety of safety-related electrical, electronic and programmable electronic control systems ISO 13849-1:2015 Safety of machinery – Safety-related parts of control systems – Part 1: General principles for design 3 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 61810-2 and the following apply. ISO and IEC maintain terminologi
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