1、BSI Standards PublicationSafety of machinery Electro-sensitive protective equipmentPart 2: Particular requirements for equipment using active opto-electronic protective devices (AOPDs)BS EN 61496-2:2013National forewordThis British Standard is the UK implementation of EN 61496-2:2013. It isidentical
2、 to IEC 61496-2:2013. It supersedes DD CLC/TS 61496-2:2006 whichis withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee MCE/3, Safeguarding of machinery.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication
3、does not purport to include all the necessary provisions ofa contract. Users are responsible for its correct application. The British Standards Institution 2014.Published by BSI Standards Limited 2014ISBN 978 0 580 73870 8ICS 13.110; 29.260.99Compliance with a British Standard cannot confer immunity
4、 fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 28 February 2014.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 61496-2:2013EUROPEAN STANDARD EN 61496-2 NORME EUROPENNE EUROPISCHE N
5、ORM December 2013 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B - 1000 Brussels 2013 CENELEC - All rights of exploitation in any form
6、and by any means reserved worldwide for CENELEC members. Ref. No. EN 61496-2:2013 E ICS 13.110; 29.260.99 Supersedes CLC/TS 61496-2:2006 English version Safety of machinery - Electro-sensitive protective equipment - Part 2: Particular requirements for equipment using active opto-electronic protectiv
7、e devices (AOPDs) (IEC 61496-2:2013) Scurit des machines - Equipements de protection lectro-sensibles - Partie 2: Exigences particulires un quipement utilisant des appareils protecteurs optolectroniques actifs (AOPD) (CEI 61496-2:2013) Sicherheit von Maschinen - Berhrungslos wirkende Schutzeinrichtu
8、ngen - Teil 2: Besondere Anforderungen an Einrichtungen, welche nach dem aktiven opto-elektronischen Prinzip arbeiten (IEC 61496-2:2013) This European Standard was approved by CENELEC on 2013-07-12. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the con
9、ditions 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
10、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
11、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,
12、 Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 61496-2:2013EN 61496-2:2013 - 2 - Foreword The text of document 44/651/CDV, future edition 3 of IEC 61496-2, prepared by IEC/TC 44 “Safety of machinery - Electrotechnical aspects“ was submitted t
13、o the IEC-CENELEC parallel vote and approved by CENELEC as EN 61496-2:2013. 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) 2014-06-13 latest date by which the national s
14、tandards conflicting with the document have to be withdrawn (dow) 2016-07-12 This document supersedes CLC/TS 61496-2:2006. EN 61496-2:2013 includes the following significant technical changes with respect to CLC/TS 61496-2:2006: requirements have been corrected and made easier to understand; test pr
15、ocedures have been revised to make them easier to perform and to improve repeatability; guidance is provided for the evaluation and verification of AOPDs using design techniques for which the test procedures of this part are not sufficient. This standard is to be used in conjunction with EN 61496-1:
16、2013. This part supplements or modifies the corresponding clauses in EN 61496-1. Where a particular clause or subclause of Part 1 is not mentioned in this Part 2, that clause or subclause applies as far as is reasonable. Where this part states “addition“, “modification“ or “replacement“, the relevan
17、t text of Part 1 is adapted accordingly. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the Internatio
18、nal Standard IEC 61496-2:2013 was approved by CENELEC as a European Standard without any modification. BS EN 61496-2:2013- 3 - EN 61496-2:2013 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following documents, in whole or i
19、n part, are normatively referenced in this document and are indispensable for its application. 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 be
20、en modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60825-1 2007 Safety of laser products - Part 1: Equipment classification and requirements EN 60825-1 2007 IEC 61496-1 2012 Safety of machinery - Electro-sensitive protective equ
21、ipment Part 1: General requirements and tests EN 61496-1 2013 IEC 62471 - Photobiological safety of lamps and lamp systems EN 62471 - ISO 13855 - Safety of machinery - Positioning of protective equipment with respect to the approach speeds of parts of the human body EN ISO 13855 - - - High-visibilit
22、y warning clothing for professional use - Test methods and requirements EN 471 2003 BS EN 61496-2:2013 2 61496-2 IEC:2013 CONTENTS INTRODUCTION . 6 1 Scope . 7 2 Normative references . 7 3 Terms and definitions . 8 4 Functional, design and environmental requirements . 9 4.1 Functional requirements 9
23、 4.2 Design requirements . 11 4.3 Environmental requirements 14 5 Testing . 14 5.1 General . 14 5.2 Functional tests . 17 5.4 Environmental tests . 34 6 Marking for identification and safe use 42 6.1 General . 42 7 Accompanying documents 42 Annex A (normative) Optional functions of the ESPE . 44 Ann
24、ex B (normative) Catalogue of single faults affecting the electrical equipment of the ESPE, to be applied as specified in 5.3 . 48 Annex AA (informative) Type 2 AOPD periodic test configurations . 49 Bibliography 51 Index 52 Figure 1 Limit area for the protection against the risk of beam bypass . 12
25、 Figure 2 Limit of vertical and horizontal misalignment 13 Figure 3 Test piece at 45 18 Figure 4 Test piece at 90 19 Figure 5 Verifying sensing function by moving the test piece (TP) through the detection zone near the emitter, near the receiver/retro-reflector target and at the midpoint 19 Figure 6
26、 Limit values for the effective aperture angle (EAA) . 21 Figure 7 Determination of the minimum detection capability . 22 Figure 8 Measuring method for EAA (direction) 23 Figure 9 Prism test to measure EAA of each beam 25 Figure 10 EAA test using prism 26 Figure 11 Design calculations for a wedge pr
27、ism . 27 Figure 12 Example of optical subsystem: Emitter on left Receiver on right 27 Figure 13 Example of SMD LED Model 28 Figure 14 Example of intensity distribution of emitting element 28 Figure 15 Example of emitter model with beams internally blocked by aperture stop 28 Figure 16 Example of rec
28、eiving unit with off axis beam portion reflected internally on mechanical elements 29 Figure 17 Example of test piece inside model of optical subsystem with passing radiation on the receiver . 30 BS EN 61496-2:201361496-2 IEC:2013 3 Figure 18 Example of emitting unit adjusted at the limit 31 Figure
29、19 Extraneous reflection test with mirror outside of limit area 32 Figure 20 AOPD misalignment test 33 Figure 21 Light interference test Direct method . 35 Figure 22 Light interference test Test set-up with incandescent light source . 36 Figure 23 Light interference test Test set-up with fluorescent
30、 light source . 37 Figure 24 Light interference test Test set-up with flashing beacon light source . 38 Figure 25 Light interference test Test set-up with stroboscopic light source 39 Figure AA.1 Single beam sensing device . 49 Figure AA.2 Series connection of single beam sensing devices . 49 Figure
31、 AA.3 Assembly of multiple beams tested individually. 49 Figure AA.4 Example of type 2 AOPD with internal test 50 Table 1 Correspondences of requirements/testing and AOPD designs . 15 Table 2 Maximum permissible angle of misalignment (in degrees) for a type 2 ESPE depending on the dimensions of the
32、light curtain . 32 Table 3 Maximum permissible angle of misalignment (in degrees) for a type 4 ESPE depending on the dimensions of the light curtain . 32 BS EN 61496-2:2013 6 61496-2 IEC:2013 INTRODUCTION Electro-sensitive protective equipment (ESPE) is applied to machinery that presents a risk of p
33、ersonal injury. It provides protection by causing the machine to revert to a safe condition before a person can be placed in a hazardous situation. This part of IEC 61496 provides particular requirements for the design, construction and testing of electro-sensitive protective equipment (ESPE) for th
34、e safeguarding of machinery, employing active opto-electronic protective devices (AOPDs) for the sensing function. Each type of machine presents its own particular hazards, and it is not the purpose of this standard to recommend the manner of application of the ESPE to any particular machine. The ap
35、plication of the ESPE should be a matter for agreement between the equipment supplier, the machine user and the enforcing authority; in this context, attention is drawn to the relevant guidance established internationally, for example, ISO 12100. Due to the complexity of the technology of ESPEs ther
36、e are many issues that are highly dependent on analysis and expertise in specific test and measurement techniques. In order to provide a high level of confidence, independent review by relevant expertise is recommended. BS EN 61496-2:201361496-2 IEC:2013 7 SAFETY OF MACHINERY ELECTRO-SENSITIVE PROTE
37、CTIVE EQUIPMENT Part 2: Particular requirements for equipment using active opto-electronic protective devices (AOPDs) 1 Scope This clause of Part 1 is replaced by the following: This part of IEC 61496 specifies requirements for the design, construction and testing of electro-sensitive protective equ
38、ipment (ESPE) designed specifically to detect persons as part of a safety-related system, employing active opto-electronic protective devices (AOPDs) for the sensing function. Special attention is directed to features which ensure that an appropriate safety-related performance is achieved. An ESPE m
39、ay include optional safety-related functions, the requirements for which are given in Annex A of IEC 61946-1:2012 and of this part. This part of IEC 61496 does not specify the dimensions or configurations of the detection zone and its disposition in relation to hazardous parts for any particular app
40、lication, nor what constitutes a hazardous state of any machine. It is restricted to the functioning of the ESPE and how it interfaces with the machine. Excluded from this part are AOPDs employing radiation at wavelengths outside the range 400 nm to 1500 nm. This part of IEC 61496 may be relevant to
41、 applications other than those for the protection of persons, for example, the protection of machinery or products from mechanical damage. In those applications, additional requirements may be necessary, for example, when the materials that are to be recognized by the sensing function have different
42、 properties from those of persons. This part does of IEC 61496 not deal with EMC emission requirements. 2 Normative references This clause of Part 1 is applicable except as follows: Additional references: IEC 60825-1:2007, Safety of laser products Part 1: Equipment classification and requirements IE
43、C 61496-1:2012, Safety of machinery Electro-sensitive protective equipment Part 1: General requirements and tests IEC 62471, Photobiological safety of lamps and lamp systems ISO 13855, Safety of machinery Positioning of safeguards with respect to the approach speeds of parts of the human body EN 471
44、:2003, High-visibility warning clothing for professional use Test methods and requirements. BS EN 61496-2:2013 8 61496-2 IEC:2013 3 Terms and definitions NOTE At the end of this standard there is an index which lists, in alphabetical order, the terms and acronyms defined in Clause 3 and indicates wh
45、ere they are used in the text. This clause of Part 1 is applicable except as follows: Additional definitions: 3.201 active opto-electronic protective device AOPD device whose sensing function is performed by opto-electronic emitting and receiving elements detecting the interruption of optical radiat
46、ions generated, within the device, by an opaque object present in the specified detection zone (or for a light beam device, on the axis of the light beam) Note 1 to entry: This note applies to the French language only. 3.202 beam centre-line optical path joining the optical centre of an emitting ele
47、ment to the optical centre of the corresponding receiving element that is intended to respond to light from that emitting element during normal operation Note 1 to entry: The optical axis of a light beam is not always on the beam centre-line. Note 2 to entry: Physical displacement of the beam centre
48、-line may occur as a consequence of normal operation (for example, by the use of a motor-driven mirror). Note 3 to entry: For an AOPD that operates on a retro-reflective technique, the optical path is defined by the retro-reflector target together with the emitting and receiving elements. 3.203 effe
49、ctive aperture angle EAA maximum angle of deviation from the optical alignment of the emitting element(s) and the receiving element(s) within which the AOPD continues in normal operation Note 1 to entry: This note applies to the French language only. 3.204 light beam device AOPD comprising one or more emitting element(s) and corresponding receiving element(s), where a detection zone is not specified by the supplier 3.205 light curtain
