IEC 61496-3:2008

Safety of machinery - Electro-sensitive protective equipment - Part 3: Particular requirements for Active Opto-electronic Protective Devices responsive to Diffuse Reflection (AOPDDR)

It specifies additional requirements for the design, construction and testing of non-contact electro-sensitive protective equipment (ESPE) designed specifically to detect persons as part of a safety related system, employing active opto-electronic protective devices responsive to diffuse reflection (AOPDDRs) for the sensing function. Special attention is directed to requirements which ensure that an appropriate safety-related performance is achieved. An ESPE may include optional safety-related functions, the requirements for which are given both in Annex A of this part and in Annex A of IEC 61496-1. The important changes and improvements compared to the first edition of this part of the standard are:
- extension of the range of detection capability covered by this part of the standard from 50 mm to 100 mm to the range of 30 mm to 200 mm;
- clarification of requirements for the selection of multiple detection zones (Clause A.10);
- more detailed information about the use of an AOPDDR as a whole body trip device by extension of Clause A.12 and a new Clause A.13;
- improved description of the relationship between ranging accuracy and probability of detection (Annex BB).

Sécurité des machines - Équipements de protection électro-sensibles - Partie 3: Exigences particulières pour les équipements utilisant des dispositifs protecteurs optoélectroniques actifs sensibles aux réflexions diffuses (AOPDDR)

Définit les exigences complémentaires de conception, de construction et d'essai d'équipements de protection électrosensibles (ESPE) sans contact conçus spécialement pour détecter des personnes, comme partie d'un système relatif à la sécurité, utilisant pour la fonction de détection des systèmes actifs optoélectroniques sensibles aux réflexions diffuses (AOPDDR). Une attention particulière est portée aux spécifications assurant qu'une performance appropriée liée à la sécurité est atteinte. Un ESPE peut comporter des fonctions optionnelles relatives à la sécurité; les exigences pour ces fonctions sont énumérées à l'Annexe A de cette partie et l'Annexe A de la CEI 61496-1. Les modifications les plus importantes par rapport à la première édition de cette norme sont:
- l'extension du domaine de la capacité de détection couverte par la présente partie de la norme de 50 mm à 100 mm au domaine de 30 mm à 200 mm;
- la clarification des exigences pour le choix des zones de détection multiples (Article A.10);
- des informations plus complètes et plus détaillées relatives à l'usage d'un AOPPDR comme dispositif de déclenchement pour le corps entier par l'extension de l'Article A.12 et du nouvel Article A.13;
- une meilleure description des relations entre la précision de mesure de distance et la probabilité de détection (Annexe BB).

General Information

• Status: Published
• Publication Date: 12-Feb-2008
• ICS: 13.110 - Safety of machinery
• ICS: 31.260 - Optoelectronics. Laser equipment
• Technical Committee: TC 44 - Safety of machinery - Electrotechnical aspects
• Drafting Committee: MT 61496-3 - TC 44/MT 61496-3
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 07-Dec-2018

Relations

• Revises: IEC 61496-3:2001 - Safety of machinery - Electro-sensitive protective equipment - Part 3: Particular requirements for Active Opto-electronic Protective Devices responsive to Diffuse Reflection (AOPDDR)
• Effective Date: 05-Sep-2023
• Revised: IEC 61496-3:2018 - Safety of machinery - Electro-sensitive protective equipment - Part 3: Particular requirements for active opto-electronic protective devices responsive to diffuse Reflection (AOPDDR)
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61496-3
Edition 2.0 2008-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Safety of machinery – Electro-sensitive protective equipment –
Part 3: Particular requirements for Active Opto-electronic Protective Devices
responsive to Diffuse Reflection (AOPDDR)

Sécurité des machines – Equipements de protection électro-sensibles –
Partie 3: Exigences particulières pour les équipements utilisant des dispositifs
protecteurs optoélectroniques actifs sensibles aux réflexions diffuses
(AOPDDR)
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IEC 61496-3
Edition 2.0 2008-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Safety of machinery – Electro-sensitive protective equipment –
Part 3: Particular requirements for Active Opto-electronic Protective Devices
responsive to Diffuse Reflection (AOPDDR)

Sécurité des machines – Equipements de protection électro-sensibles –
Partie 3: Exigences particulières pour les équipements utilisant des dispositifs
protecteurs optoélectroniques actifs sensibles aux réflexions diffuses
(AOPDDR)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
XB
CODE PRIX
ICS 13.110; 31.260 ISBN 2-8318-9588-X

– 2 – 61496-3 © IEC:2008
CONTENTS
FOREWORD.4

INTRODUCTION.6

1 Scope.7

2 Normative references.8

3 Terms and definitions .8

4 Requirements .9

4.1 Functional requirements .9
4.2 Design requirements.9
4.3 Environmental requirements .16
5 Testing .18
5.1 General .18
5.2 Functional tests .25
5.3 Performance testing under fault conditions.32
5.4 Environmental tests .32
6 Marking for identification and for safe use .46
6.1 General .46
7 Accompanying documents .46

Annex A (normative) Optional functions of the ESPE .48
Annex B (normative) Catalogue of single faults affecting the electrical equipment of the
ESPE, to be applied as specified in 5.3 .56
Annex AA (informative) Examples of the use of an AOPDDR in different applications.57
Annex BB (informative) Relationship between ranging accuracy and probability of
detection.61

Bibliography .69

Figure 1 – Detection zone of an AOPDDR – Example 1 .12
Figure 2 – Detection zone of an AOPDDR – Example 2 .13
Figure 3 – Minimum diffuse reflectivity of materials.15

Figure 4 – Influence on detection capability by incandescent light – Example 1 .19
Figure 5 – Influence on detection capability by incandescent light – Example 2 .20
Figure 6 – Influence on detection capability by light reflected by the background.21
Figure 7 – Influence on detection capability by stroboscopic light – Example 1 .22
Figure 8 – Influence on detection capability by stroboscopic light – Example 2 .23
Figure 9 – Light interference test .24
Figure 10 – Interference between two AOPDDRs of identical design .25
Figure 11 – Configuration for the endurance test – Example 1 .30
Figure 12 – Configuration for the endurance test – Example 2 .31
Figure 13a – Test of homogeneous pollution – Examples of different designs of
AOPDDR housings and optical windows without foil for simulation of homogeneous
pollution .42

61496-3 © IEC:2008 – 3 –
Figure 13b – Test of homogeneous pollution – Examples of different designs of

AOPDDR housings and optical windows – Examples of correct positions of the foil.43

Figure 13c – Test of homogeneous pollution – Examples of different designs of

AOPDDR housings and optical windows – Examples of incorrect positions of the foil .43

Figure 14 – Influence on detection capability by background .44

Figure A.1 – Use of an AOPDDR as a whole-body trip device – Example 1 .51

Figure A.2 – Use of an AOPDDR as a whole-body trip device – Example 2 .52

Figure A.3 – Use of an AOPDDR as parts of a body trip device – Example 1.54

Figure A.4 – Use of an AOPDDR as parts of a body trip device – Example 2.54

Figure AA.1 – Example of the use of an AOPDDR on machinery.58
Figure AA.2 – Example of the use of an AOPDDR on an AGV.59
Figure BB.1 – Relationship between ranging accuracy and detection zone .61
Figure BB.2 – Relationship between ranging accuracy, detection zone and the
probabilistic part of the tolerance zone – Example 1 .62
Figure BB.3 – Relationship between ranging accuracy, detection zone and the
probabilistic part of the tolerance zone – Example 2 .63
Figure BB.4 – Relationship between ranging accuracy, detection zone and tolerance
zone – Example 1 .64
Figure BB.5 – Relationship between ranging accuracy, detection zone and tolerance
zone – Example 2 .65
Figure BB.6 – Reference boundary monitoring – Distribution of measurement values –
Example 1.66
Figure BB.7 – Reference boundary monitoring – Distribution of measurement values –
Example 2.66
Figure BB.8 – POD of a single measurement (logarithmic) for a MooM-evaluation with 1
≤ M ≤ 50 .67
Figure BB.9 – POD of a single measurement for a MooM-evaluation with 1 ≤ M ≤ 50 in
relation to σ in the case of a normal distribution.68

Table 1 – Minimum tests required for the verification of detection capability
requirements (see also 4.2.12.1) .27
Table 2 – Overview of light interference tests .36

– 4 – 61496-3 © IEC:2008
INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
SAFETY OF MACHINERY –
ELECTRO-SENSITIVE PROTECTIVE EQUIPMENT –

Part 3: Particular requirements for Active Opto-electronic

Protective Devices responsive to

Diffuse Reflection (AOPDDR)
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,
...