SIST EN 61810-2-1:2011
(Main)Electromechanical elementary relays - Part 2: Reliability - Procedure for the verification of B10 values
Electromechanical elementary relays - Part 2: Reliability - Procedure for the verification of B10 values
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 standard.
This International Standard is only intended to be used in conjunction with IEC 61810-2.
Elektromechanische Elementarrelais - Teil 2-1: Funktionsfähigkeit (Zuverlässigkeit) - Verfahren zum Nachweis der B10-Werte
Relais électromécaniques élémentaires - Partie 2-1: Fiabilité - Procédure de vérification des valeurs de B10
La CEI 61810-2-1:2011 spécifie les procédures d'essai de fiabilité pour les relais électromécaniques élémentaires lorsque des exigences renforcées pour la vérification de la fiabilité s'appliquent. Des dispositions particulières sont fournies pour les relais incorporés dans les systèmes de contrôle liés à la sécurité des machines selon la CEI 62061 et l'ISO 13849-1. Pour ces relais, les valeurs de B10 pour des défaillances dangereuses (valeurs de B10d) sont dérivées des essais spécifiés dans la présente norme. La présente Norme internationale doit être utilisée uniquement conjointement avec la CEI 61810-2.
Osnovni elektromehanski releji - 2. del: Zanesljivost - Postopki za overjanje vrednosti B10
Ta del IEC 61810 določa postopke za preskušanje zanesljivosti za osnovne elektromehanske releje, kadar veljajo ostrejše zahteve za overjanje zanesljivosti.
Podane so konkretne določbe za releje, vgrajene v varnostne krmilne sisteme strojev v skladu z IEC 62061 in ISO 13849-1. Za take releje se vrednosti B10 za nevarne okvare (vrednosti B10d) izpeljejo iz preskusov, določenih s tem standardom. Ta mednarodni standard je namenjen samo uporabi skupaj z ISO 61810-2.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 61810-2-1:2011
01-december-2011
Osnovni elektromehanski releji - 2. del: Zanesljivost - Postopki za overjanje
vrednosti B10
Electromechanical elementary relays - Part 2: Reliability - Procedure for the verification
of B10 values
Elektromechanische Elementarrelais - Teil 2-1: Funktionsfähigkeit (Zuverlässigkeit) -
Verfahren zum Nachweis der B10-Werte
Relais électromécaniques élémentaires - Partie 2-1: Fiabilité - Procédure de vérification
des valeurs de B10
Ta slovenski standard je istoveten z: EN 61810-2-1:2011
ICS:
29.120.70 Releji Relays
SIST EN 61810-2-1:2011 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 61810-2-1:2011
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SIST EN 61810-2-1:2011
EUROPEAN STANDARD
EN 61810-2-1
NORME EUROPÉENNE
April 2011
EUROPÄISCHE NORM
ICS 29.120.70
English version
Electromechanical elementary relays -
Part 2-1: Reliability -
Procedure for the verification of B10 values
(IEC 61810-2-1:2011)
Relais électromécaniques élémentaires - Elektromechanische Elementarrelais -
Partie 2-1: Fiabilité - Teil 2-1: Funktionsfähigkeit
Procédure de vérification des valeurs (Zuverlässigkeit) -
de B10 Verfahren zum Nachweis der B10-Werte
(CEI 61810-2-1:2011) (IEC 61810-2-1:2011)
This European Standard was approved by CENELEC on 2011-04-01. 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 Central Secretariat 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 Central Secretariat 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Management Centre: Avenue Marnix 17, B - 1000 Brussels
© 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61810-2-1:2011 E
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SIST EN 61810-2-1:2011
EN 61810-2-1:2011 - 2 -
Foreword
The text of document 94/317/FDIS, future edition 1 of IEC 61810-2-1, prepared by IEC TC 94,
All-or-nothing electrical relays, was submitted to the IEC-CENELEC parallel vote and was approved by
CENELEC as EN 61810-2-1 on 2011-04-01.
This standard is to be used in conjunction with EN 61810-2:2011.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent
rights.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2012-01-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2014-04-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61810-2-1:2011 was approved by CENELEC as a European
Standard without any modification.
__________
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SIST EN 61810-2-1:2011
- 3 - EN 61810-2-1:2011
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following referenced documents are indispensable for the application 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 When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year
IEC 61810-1 2008 Electromechanical elementary relays - EN 61810-1 2008
Part 1: General requirements
IEC 61810-2 2011 Electromechanical elementary relays - EN 61810-2 2011
Part 2: Reliability
IEC 62061 2005 Safety of machinery - Functional safety of EN 62061 2005
safety-related electrical, electronic and + corr. February 2010
programmable electronic control systems
ISO 13849-1 2006 Safety of machinery - Safety-related parts of EN ISO 13849-1 2008
control systems -
Part 1: General principles for design
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SIST EN 61810-2-1:2011
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SIST EN 61810-2-1:2011
IEC 61810-2-1
®
Edition 1.0 2011-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electromechanical elementary relays –
Part 2-1: Reliability – Procedure for the verification of B values
10
Relais électromécaniques élémentaires –
Partie 2-1: Fiabilité – Procédure de vérification des valeurs de B
10
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX Q
ICS 29.120.70 ISBN 978-2-88912-375-9
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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SIST EN 61810-2-1:2011
– 2 – 61810-2-1 IEC:2011
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Verification of B . 7
10
4.1 General . 7
4.2 Requirements . 7
4.2.1 Test specimens . 7
4.2.2 Test circuit . 7
4.2.3 Contact loads . 7
4.2.4 Environmental conditions . 7
4.2.5 Operating conditions . 8
4.2.6 Failure criteria . 8
4.3 Performance of the tests . 8
4.3.1 Conformity test . 8
4.3.2 Periodic test . 8
5 Evaluation and verification of B . 9
10d
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 . 10
5.2.4 Environmental conditions . 10
5.2.5 Operating conditions . 10
5.2.6 Failure criteria . 10
5.3 Performance of the tests . 11
5.3.1 Conformity test . 11
5.3.2 Periodic test . 11
Annex A (informative) Example illustrating the assessment of malfunctions for B
10d
evaluation . 15
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
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SIST EN 61810-2-1:2011
61810-2-1 IEC:2011 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTROMECHANICAL ELEMENTARY RELAYS –
Part 2-1: Reliability –
Procedure for the verification of B values
10
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 standard cancels and replaces IEC/PAS 61810-2-1 published in 2008. This edition
constitutes a technical revision.
This standard includes the following significant technical changes with respect to
IEC/PAS 61810-2-1:
• addition of inductive loads in Clause 4;
• specification of dielectric tests under Clause 4 and Clause 5;
.
• addition of informative Annex A illustrating the assessment of malfunctions for B
10d
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SIST EN 61810-2-1:2011
– 4 – 61810-2-1 IEC:2011
The text of this standard is based on the following documents:
FDIS Report on voting
94/317/FDIS 94/326/RVD
Full information on the voting for the approval of this standard 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.
A list of all parts of the IEC 61810 series can be found, under the general title
Electromechanical elementary relays, on the IEC website.
This International Standard is to be used in conjunction with IEC 61810-2:2011.
The committee has 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
• amended.
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SIST EN 61810-2-1:2011
61810-2-1 IEC:2011 – 5 –
INTRODUCTION
Based on the general provisions of IEC 61810-2, this standard specifies reliability test
procedures for electromechanical elementary relays where enhanced requirements for the
verification of reliability apply. An initial conformity test is passed and then confirmed by
periodic tests with specified periodicity. This standard describes how figures for B (the
10
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 (MTTF ) is a measure that can be taken into account
d
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 MTTF then becomes the expectation of the mean time to failure in this
d
“dangerous“ mode. For the calculation of MTTF for electromechanical relays the data
d
provided by the manufacturer for B can be used (see C.4 of ISO 13849-1:2006).
10d
Electromechanical elementary relays with forcibly guided (mechanically linked) contacts offer
the possibility of a high diagnostic coverage according to 4.5.3 of ISO 13849-1:2006.
NOTE Requirements for such relays are given in EN 50205.
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SIST EN 61810-2-1:2011
– 6 – 61810-2-1 IEC:2011
ELECTROMECHANICAL ELEMENTARY RELAYS –
Part 2-1: Reliability –
Procedure for the verification of B values
10
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
values for
machinery in accordance with IEC 62061 and ISO 13849-1. For such relays B
10
dangerous failures (B values) are derived from the tests specified in this standard.
10d
This International Standard is only intended to be used in conjunction with IEC 61810-2.
2 Normative references
The following referenced documents are indispensable for the application 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 61810-1:2008, Electromechanical elementary relays – Part 1: General requirements
IEC 61810-2:2011, Electromechanical elementary relays – Part 2: Reliability
IEC 62061:2005, Safety of machinery – Functional safety of safety-related electrical,
elec
...
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