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1、a Date: 15 January 2009 Origin: International Latest date for receipt of comments: 15 March 2009 Project no.: 2008/01376 Responsible committee: EPL/94 General purpose relays and reed contact units Interested committees: Title: BS IEC 61810-2-1 Ed.1: Electromechanical elementary relays Part 2-1: Reli
2、ability - Procedure for the verification of B10 values Supersession information: If this document is published as a standard, the UK implementation of it will supersede NONE and partially supersede. NONE If you are aware of a current national standard which may be affected, please notify the secreta
3、ry (contact details below). WARNING: THIS IS A DRAFT AND MUST NOT BE REGARDED OR USED AS A BRITISH STANDARD. THIS DRAFT IS NOT CURRENT BEYOND 15 March 2009. This draft is issued to allow comments from interested parties; all comments will be given consideration prior to publication. No acknowledgeme
4、nt will normally be sent. See overleaf for information on commenting. No copying is allowed, in any form, without prior written permission from BSI except as permitted under the Copyright, Designs and Patent Act 1988 or for circulation within a nominating organization for briefing purposes. Electron
5、ic circulation is limited to dissemination by e-mail within such an organization by committee members. Further copies of this draft may be purchased from BSI Customer Services, Tel: +44(0) 20 8996 9001 or email . British, International and foreign standards are also available from BSI Customer Servi
6、ces. Information on the co-operating organizations represented on the committees referenced above may be obtained from the responsible committee secretary. Cross-references The British Standards which implement International or European publications referred to in this draft may be found via the Bri
7、tish Standards Online Service on the BSI web site http:/. Direct tel: 020 8996 7009 Responsible Committee Secretary: Committee Service Centre (BSI) E-mail: Draft for Public Comment Head Office 389 Chiswick High Road London W4 4AL Telephone: +44(0)20 8996 9000 Fax: +44(0)20 8996 7001 Form 36 Version
8、 8.0 DPC: 09/30197676 DC Licensed Copy: London South Bank University, South Bank University, 02/02/2009 03:56, Uncontrolled Copy, (c) BSI b Introduction This draft standard is based on international discussions in which the UK has taken an active part. Your comments on this draft are welcome and wil
9、l assist in the preparation of the consequent standard. There is a high probability that this text could be adopted by CENELEC as a reference document for harmonization or as a European Standard. Recipients of this draft are requested to comment on the text bearing in mind this possibility. UK Vote
10、Please indicate whether you consider the UK should submit a negative (with reasons) or positive vote on this draft. Submission The guidance given below is intended to ensure that all comments receive efficient and appropriate attention by the responsible BSI committee. Annotated drafts are not accep
11、table and will be rejected. All comments must be submitted, preferably electronically, to the Responsible Committee Secretary at the address given on the front cover. Comments should be compatible with Version 6.0 or Version 97 of Microsoft Word for Windows, if possible; otherwise comments in ASCII
12、text format are acceptable. Any comments not submitted electronically should still adhere to these format requirements. All comments submitted should be presented as given in the example below. Further information on submitting comments and how to obtain a blank electronic version of a comment form
13、are available from the BSI web site at: http:/ Template for comments and secretariat observations Date: xx/xx/200x Document: ISO/DIS xxxxx 1 2 (3) 4 5 (6) (7) MB Clause No./ Subclause No./ Annex (e.g. 3.1) Paragraph/ Figure/Table/ Note (e.g. Table 1) Type of com- ment Comment (justification for chan
14、ge) by the MB Proposed change by the MB Secretariat observations on each comment submitted 3.1 Definition 1 ed Definition is ambiguous and needs clarifying. Amend to read . so that the mains connector to which no connection . 6.4 Paragraph 2 te The use of the UV photometer as an alternative cannot b
15、e supported as serious problems have been encountered in its use in the UK. Delete reference to UV photometer. Microsoft and MS-DOS are registered trademarks, and Windows is a trademark of Microsoft Corporation. Licensed Copy: London South Bank University, South Bank University, 02/02/2009 03:56, Un
16、controlled Copy, (c) BSI FORM CD (IEC) 2002-08-08 94/282/CD COMMITTEE DRAFT (CD) IEC/TC or SC: TC 94 Project number IEC 61810-2-1 Ed.1 Title of TC/SC: All-or-nothing electrical relays Date of circulation 2009-01-09 Closing date for comments 2009-04-10 Also of interest to the following committees TC
17、44, SC 17B Supersedes document 94/273/NP - 94/275/RVN Functions concerned: Safety EMC Environment Quality assurance Secretary: Guido von Trentini (Germany) THIS DOCUMENT IS STILL UNDER STUDY AND SUBJECT TO CHANGE. IT SHOULD NOT BE USED FOR REFERENCE PURPOSES. RECIPIENTS OF THIS DOCUMENT ARE INVITED
18、TO SUBMIT, WITH THEIR COMMENTS, NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE AND TO PROVIDE SUPPORTING DOCUMENTATION. Title: IEC 61810-2-1 Ed.1: Electromechanical elementary relays - Part 2-1: Reliability - Procedure for the verification of B10 values (Titre) : Introductory not
19、e Copyright 2009 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to download this electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions. You may not copy or “mirror“ the file or printed version
20、 of the document, or any part of it, for any other purpose without permission in writing from IEC. Licensed Copy: London South Bank University, South Bank University, 02/02/2009 03:56, Uncontrolled Copy, (c) BSI IEC 61810-2-1 IEC:200X 2 94/282/CD CONTENTS FOREWORD.3 Introduction.5 1 Scope.6 2 Normat
21、ive references .6 3 Terms and definitions .6 4 Verification of B10.7 4.1 General.7 4.2 Requirements7 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 conditions7 4.2.6 Failure criteria .8 4.3 Performance of the tests .8 4.3.1 Conform
22、ity test 8 4.3.2 Periodic test 8 5 Evaluation and verification of B10d.8 5.1 General.8 5.2 Requirements9 5.2.1 Test specimens .9 5.2.2 Test circuit 9 5.2.3 Contact loads 9 5.2.4 Environmental conditions.10 5.2.5 Operating conditions10 5.2.6 Failure criteria .10 5.3 Performance of the tests .10 5.3.1
23、 Conformity test 10 5.3.2 Periodic test 11 Licensed Copy: London South Bank University, South Bank University, 02/02/2009 03:56, Uncontrolled Copy, (c) BSI IEC 61810-2-1 IEC:200X 3 94/282/CD INTERNATIONAL ELECTROTECHNICAL COMMISSION _ ELECTROMECHANICAL ELEMENTARY RELAYS Part 2-1: Reliability Procedu
24、re 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 quest
25、ions 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(
26、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 coll
27、aborates 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
28、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 ensur
29、e 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
30、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 provides no marking procedure to indicate its approval and cannot be rendered re
31、sponsible for any equipment declared to be in conformity with an IEC Publication. 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 tech
32、nical 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
33、 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 subje
34、ct of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. 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 2008-07. The text of this standard
35、is based on the following documents: FDIS Report on voting 94/XX/FDIS 94/XX/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. Lic
36、ensed Copy: London South Bank University, South Bank University, 02/02/2009 03:56, Uncontrolled Copy, (c) BSI IEC 61810-2-1 IEC:200X 4 94/282/CD The committee has decided that the contents of this publication will remain unchanged until the maintenance result date1 indicated on the IEC web site unde
37、r “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. 1 The National Committees are requested to note that for this publication the maintenance result date is 2013. Licensed
38、Copy: London South Bank University, South Bank University, 02/02/2009 03:56, Uncontrolled Copy, (c) BSI IEC 61810-2-1 IEC:200X 5 94/282/CD Introduction Based on the general provisions of IEC 61810-2 this standard specifies reliability test procedures for electromechanical elementary relays where enh
39、anced requirements for the verification of reliability apply. An initial conformity test has to be passed and then confirmed by periodic tests at least once a year. This standard describes how figures for B10 (the mean number of cycles until 10 percent of the relays have failed) are derived from the
40、se 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
41、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 typi
42、cal 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 u
43、sed (see C.4 of ISO 13849-1). Electromechanical elementary relays with forcibly guided (mechanically linked) contacts offer the possibility of a high diagnostic coverage (DC) according to 4.5.3 of ISO 13849-1. NOTE Requirements for such relays are given in EN 50205. Licensed Copy: London South Bank
44、University, South Bank University, 02/02/2009 03:56, Uncontrolled Copy, (c) BSI IEC 61810-2-1 IEC:200X 6 94/282/CD ELECTROMECHANICAL ELEMENTARY RELAYS Part 2-1: Reliability Procedure for the verification of B10 values 1 Scope This standard specifies reliability test procedures for electromechanical
45、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)
46、 are derived from the tests specified in this standard. This 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. F
47、or undated references, the latest edition of the referenced document (including any amendments) applies. IEC 61810-1 (2008): Electromechanical elementary relays Part 1: General and safety requirements IEC 61810-2 (200X): Electromechanical elementary relays Part 2: Reliability IEC 62061 (2005): Safet
48、y of machinery Functional safety of safety-related electrical, electronic and programmable electronic control systems ISO 13849-1: Safety of machinery Safety-related parts of machinery Part 1: General principles for design 3 Terms and definitions The terms and definitions of IEC 61810-2 apply. 3.1 d
49、angerous failure failure which has the potential to put the safety-related part of a control system in a hazardous or fail-to-function state 3.1.5 of ISO 13849-1 3.2 conformity test test of a sample of relays made to a given design to verify that these relays comply with the specified requirements 3.3 periodic test test carried out periodically on a sample o