CLC/TS 61496-2:2006

SLOVENSKI SIST-TS CLC/TS 61496-2:2006

STANDARD
oct 2006
Varnost strojev – Električno občutljiva zaščitna oprema – 2. del: Posebne
zahteve za opremo, ki uporablja aktivne optoelektronske zaščitne elemente
(IEC 61496-2:2006)
Safety of machinery - Electro-sensitive protective equipment – Part 2: Particular
requirements for equipment using active opto-electronic protective devices
(AOPDs) (IEC 61496-2:2006)
ICS 13.110; 31.260 Referenčna številka
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

TECHNICAL SPECIFICATION
CLC/TS 61496-2
SPÉCIFICATION TECHNIQUE
July 2006
TECHNISCHE SPEZIFIKATION
ICS 13.110.; 29.260.99 Supersedes CLC/TS 61496-2:2003

English version
Safety of machinery -
Electro-sensitive protective equipment
Part 2: Particular requirements for equipment using
active opto-electronic protective devices (AOPDs)
(IEC 61496-2:2006)
Sécurité des machines -  Sicherheit von Maschinen -
Equipement de protection électrosensible Berührungslos wirkende
Partie 2: Exigences particulières à Schutzeinrichtungen
un équipement utilisant des dispositifs Teil 2: Besondere Anforderungen an
protecteurs optoélectroniques actifs Einrichtungen, welche nach dem aktiven
(AOPD) opto-elektronischen Prinzip arbeiten
(CEI 61496-2:2006) (IEC 61496-2:2006)

This Technical Specification was approved by CENELEC on 2006-06-01.

CENELEC members are required to announce the existence of this TS in the same way as for an EN and to
make the TS available promptly at national level in an appropriate form. It is permissible to keep conflicting
national standards in force.
CENELEC members are the national electrotechnical committees of Austria, Belgium, 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

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. CLC/TS 61496-2:2006 E

Foreword
The text of document 44/500/FDIS, future edition 2 of IEC 61496-2, prepared by IEC TC 44, Safety of
machinery - Electrotechnical aspects, in collaboration with the Technical Committee CENELEC TC 44X,
Safety of machinery: electrotechnical aspects, was submitted to the IEC-CENELEC parallel vote and was
approved by CENELEC as CLC/TS 61496-2 on 2006-06-01.
This Technical Specification supersedes CLC/TS 61496-2:2003.
This Technical Specification includes the following technical changes with respect to
CLC/TS 61496-2:2003:
a) Requirements have been corrected and made easier to understand.
b) Test procedures have been revised to make them easier to perform and to improve repeatability.
c) Guidance is provided for the evaluation and verification of AOPDs using design techniques for which
the test procedures of this part are not appropriate.
This Technical Specification is to be used in conjunction with EN 61496-1:2004.
The following date was fixed:
– latest date by which the existence of the CLC/TS has to be
announced at national level (doa) 2006-12-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61496-2:2006 was approved by CENELEC as a Technical
Specification without any modification.
__________
- 3 - CLC/TS 61496-2:2006
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

1) 2)
IEC 60825-1 - Safety of laser products EN 60825-1 1994
Part 1: Equipment classification, requirements + corr. February 1995
and user's guide + A11 1996
IEC/TS 62046 2004 Safety of machinery - Application of protective CLC/TS 62046 2005
equipment to detect the presence of persons

ISO 13855 2002 Safety of machinery - Positioning of protective - -
equipment with respect to the approach
speeds of parts of the human body

- - High-visibility warning clothing for EN 471 2003
professional use - Test methods and
requirements
1)
Undated reference.
2)
Valid edition at date of issue.

NORME CEI
INTERNATIONALE
IEC
61496-2
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
2006-04
Sécurité des machines –
Equipement de protection électrosensible –
Partie 2:
Exigences particulières à un équipement
utilisant des dispositifs protecteurs
optoélectroniques actifs (AOPD)

Safety of machinery –
Electro-sensitive protective equipment –
Part 2:
Particular requirements for equipment
using active opto-electronic protective
devices (AOPDs)
 IEC 2006 Droits de reproduction réservés  Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in any
utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including
électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from
microfilms, sans l'accord écrit de l'éditeur. the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
CODE PRIX
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PRICE CODE
Commission Electrotechnique Internationale
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue

61496-2  IEC:2006 – 3 –
CONTENTS
FOREWORD.7
INTRODUCTION.11

1 Scope.13
2 Normative references .13
3 Terms and definitions .15
4 Functional, design and environmental requirements .17
4.1 Functional requirements .17
4.2 Design requirements .23
4.3 Environmental requirements .27
5 Testing .27
5.1 General .27
5.2 Functional tests .29
6 Marking for identification and safe use.61
6.1 General .61
7 Accompanying documents .63

Annex A (normative) Optional functions of the ESPE .65
Annex B (normative) Catalogue of single faults affecting the electrical equipment of
the ESPE, to be applied as specified in 5.3.67
Annex C (normative) Verifying effective aperture angle using the prism method.69
Annex D (normative) Verifying optical performance using the mirror method and
misalignment test.77
Annex E (informative) AOPD detection capability based on complete obscuration.85

Bibliography.87

Index .89

Figure 1 – Limit area for the protection against the risk of beam bypass .19
Figure 2 – Measurement of the effective aperture angle (EAA).21
Figure 3 – Test piece at 45° .31
Figure 4 – Test piece at 90° .31
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.33
Figure 6 – Analysis and tests of AOPDs – Flow chart.39
Figure 7 – Measuring method for EAA (direction) .43
Figure 8 – Light interference test – Direct method.47
Figure 9 – Light interference test – Test set-up with halogen light source .49
Figure 10 – Light interference test – Test set-up with fluorescent light source.51

61496-2  IEC:2006 – 5 –
Figure 11 – Light interference test – Test set-up with xenon flashing beacon .53
Figure 12 – Light interference test – Test set-up with strobe lamp.55
Figure D.1 – Prism test to measure EAA of each beam .71
Figure D.2 – EAA test using prism .73
Figure D.3 – Design calculations for a wedge prism .75
Figure E.1 – AOPD misalignment.81
Figure E.2 – Extraneous reflections .83
Figure F.1 – Determination of the minimum detection capability.85

Table E.1 – Maximum permissible angle of misalignment (in degrees) for a
type 2 ESPE depending on the dimensions of the light curtain .77
Table E.2 – Maximum permissible angle of misalignment (in degrees) for a
type 4 ESPE depending on the dimensions of the light curtain .79

61496-2  IEC:2006 – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
SAFETY OF MACHINERY –
ELECTRO-SENSITIVE PROTECTIVE EQUIPMENT –

Part 2: Particular requirements for equipment using active
opto-electronic protective devices (AOPDs)

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,
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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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an
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