prEN IEC 61496-3:2023

Safety of machinery - Electro-sensitive protective equipment - Part 3: Particular requirements for active opto-electronic protective devices responsive to diffuse reflection (AOPDDR)

Sicherheit von Maschinen - Berührungslos wirkende Schutzeinrichtungen - Teil 3: Besondere Anforderungen an aktive optoelektronische diffuse Reflexion nutzende Schutzeinrichtungen (AOPDDR)

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

Varnost strojev - Električno občutljiva zaščitna oprema - 3. del: Posebne zahteve za aktivne optoelektronske zaščitne elemente, ki se odzivajo na difuzni odboj (AOPDDR)

General Information

• Status: Not Published
• Publication Date: 13-Jul-2025
• ICS: 13.110 - Safety of machinery
• ICS: 31.260 - Optoelectronics. Laser equipment
• Technical Committee: CLC/TC 44X - Safety of machinery: electrotchnical aspects
• Current Stage: 4060 - Enquiry results established and sent to TC, SR, BTTF - Enquiry
• Start Date: 15-Mar-2024
• Completion Date: 15-Mar-2024
• Ref Project: oSIST prEN IEC 61496-3:2024 - Safety of machinery - Electro-sensitive protective equipment - Part 3: Particular requirements for active opto-electronic protective devices responsive to diffuse reflection (AOPDDR)

Relations

• Revises: EN IEC 61496-3:2019 - Safety of machinery - Electro-sensitive protective equipment - Part 3: Particular requirements for active opto-electronic protective devices responsive to diffuse Reflection (AOPDDR)
• Effective Date: 21-Mar-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-februar-2024
Varnost strojev - Električno občutljiva zaščitna oprema - 3. del: Posebne zahteve
za aktivne optoelektronske zaščitne elemente, ki se odzivajo na difuzni odboj
(AOPDDR)
Safety of machinery - Electro-sensitive protective equipment - Part 3: Particular
requirements for active opto-electronic protective devices responsive to diffuse reflection
(AOPDDR)
Sicherheit von Maschinen - Berührungslos wirkende Schutzeinrichtungen - Teil 3:
Besondere Anforderungen an aktive optoelektronische diffuse Reflexion nutzende
Schutzeinrichtungen (AOPDDR)
Sécurité des machines - équipements de protection électrosensibles - Partie 3:
Exigences particulières pour les équipements utilisant des dispositifs protecteurs
optoélectroniques actifs sensibles aux réflexions diffuses (AOPDDR)
Ta slovenski standard je istoveten z: prEN IEC 61496-3:2023
ICS:
13.110 Varnost strojev Safety of machinery
31.260 Optoelektronika, laserska Optoelectronics. Laser
oprema equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

44/1016/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 61496-3 ED4
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2023-12-22 2024-03-15
SUPERSEDES DOCUMENTS:
44/998/CD, 44/1013/CC
IEC TC 44 : SAFETY OF MACHINERY - ELECTROTECHNICAL ASPECTS
SECRETARIAT: SECRETARY:
United Kingdom Mrs Nyomee Hla-Shwe Tun
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:

Other TC/SCs are requested to indicate their interest, if any, in
this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft for Vote
(CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
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This document is still under study and subject to change. It should not be used for reference purposes.
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aware and to provide supporting documentation.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some Countries” clau ses to
be included should this proposal proceed. Recipients are reminded that the CDV stage is the final stage for submitting ISC c lauses.
(SEE AC/22/2007 OR NEW GUIDANCE DOC).

TITLE:
Safety of machinery - Electro-sensitive protective equipment - Part 3: Particular requirements for active
opto-electronic protective devices responsive to diffuse Reflection (AOPDDR)

PROPOSED STABILITY DATE: 2028
NOTE FROM TC/SC OFFICERS:
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 of the document, or any part of it, for any other purpose without permis sion in
writing from IEC.
44/1016/CDV – 2 – IEC CDV 61496-3 © IEC 2023
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 9
3 Terms and definitions . 9
4 Functional, design and environmental requirements . 11
4.1 Functional requirements. 11
4.2 Design requirements . 12
4.3 Environmental requirements . 21
5 Testing . 25
5.1 General . 25
5.2 Functional tests . 25
5.3 Performance testing under fault conditions . 36
5.4 Environmental tests . 37
6 Marking for identification and for safe use . 53
6.1 General . 54
7 Accompanying documents . 54
Annex A (normative) Optional functions of the ESPE . 56
Annex B (normative) Catalogue of single faults affecting the electrical equipment of
the ESPE, to be applied as specified in 5.3 . 63
Annex AA (informative) Examples of the use of an AOPDDR in different applications . 64
AA.1 Positioning of AOPDDR-3D in respect of parts of the human body and
calculation of distances . 64
AA.1.1 General . 64
AA.1.2 Calculation of the overall minimum distance S . 64
o
AA.1.3 AOPDDR-3D with a minimum detectable object size > 40 mm and
≤ 55 mm . 65
AA.1.4 AOPDDR-3D with a minimum detectable object size > 55 mm and
≤ 200 mm . 66
AA.1.5 Examples of detection zone and tolerance zone . 66
AA.1.6 Application examples for body detection of an AOPDDR-3D . 71
AA.2 Examples of the use of an AOPDDR . 73
AA.2.1 General . 73
AA.2.2 Limited distance . 73
AA.2.3 Overlap by the tolerance zone . 74
AA.2.4 Reference boundary monitoring . 75
AA.3 Detection zone angled to the direction of approach – orthogonal approach . 76
AA.4 Example for the calculation of the response time of an AOPDDR-2D . 78
Annex BB (informative) Relationship between position accuracy and probability of
detection for a Type 3 AOPDDR . 79
Bibliography . 85

Figure 1 – Detection zone of an AOPDDR-2D . 16
Figure 2 – Detection zone of an AOPDDR-3D . 17

IEC CDV 61496-3 © IEC 2023 – 3 – 44/1016/CDV
Figure 3 – Shape of test pieces for AOPDDR-3D . 19
Figure 4 – Minimum diffuse reflectivity of materials . 20
Figure 5 – Test piece intrusion into the detection zone for test . 27
Figure 6 – Influence on detection capability by incandescent light – Example 1 . 31
Figure 7 – Influence on detection capability by incandescent light – Example 2 . 32
Figure 8 – Influence on detection capability by light reflected by the background . 33
Figure 9 – Configuration for the endurance test – Example 1 . 34
Figure 10 – Configuration for the endurance test – Example 2 . 35
Figure 11 – Interference between two AOPDDR-3D of identical design (opposite
arrangement) . 44
Figure 12 – Interference between two AOPDDR-3D of identical design (parallel
arrangement) . 45
Figure 13 – Example of an emitting element of an AOPDDR . 47
Figure 14 – Example of a receiver of an AOPDDR . 48
Figure 15 – Influence on detection capability by background . 49
Figure 16 – Multi-path reflection test (top view) . 50
Figure 17 – Multi-path reflection test (side view) . 50
Figure A.1 – Reference boundary monitoring – Distribution of measurement values . 58
Figure A.2 – Use of an AOPDDR with reference boundary monitoring . 59
Figure A.3 – Use of an AOPDDR as parts of a body trip device. 60
Figure A.4 – AOPDDR used as a trip device with orthogonal approach (150 mm
minimum detectable object size) . 61
Figure A.5 – AOPDDR used as a trip device with orthogonal approach (200 mm
minimum detectable object size) . 62
Figure AA.1 – Minimum distance S – Example 1 . 66
Figure AA.2 – Overall minimum distance S without tolerance zone – Example 1 . 67
o
Figure AA.3 – Overall minimum distance S including tolerance zone – Example 1 . 68
o
Figure AA.4 – Minimum distance S – Example 2 . 69
Figure AA.5 – Overall minimum distance S without tolerance zone – Example 2 . 70
o
Figure AA.6 – Overall minimum distance S including tolerance zone – Example 2 . 71
o
Figure AA.7 – Application example for body detection of an AOPDDR-3D . 72
Figure AA.8 – Limited distance . 74
Figure AA.9 – Overlap . 75
Figure AA.10 – Reference boundary monitoring – Distribution of measurement values . 76
Figure AA.11 – AOPDDR-2D detection zone angled to the direction of approach –
Orthogonal approach . 77
Figure AA.12 – AOPDDR-3D detection zone angled to the direction of approach –
Orthogonal approach . 77
Figure BB.1 – Relationship between position accuracy and detection zone . 79
Figure BB.2 – Relationship between position accuracy, detection zone and the
probabilistic part of the tolerance zone – Example 1 . 80
Figure BB.3 – Relationship between position accuracy, detection zone and the
probabilistic part of the tolerance zone – Example 2 . 81
Figure BB.4 – Relationship between position accuracy, detection zone and tolerance
zone – Example 1 . 82

44/1016/CDV – 4 – IEC CDV 61496-3 © IEC 2023
Figure BB.5 – Relationship between position accuracy, detection zone and tolerance
zone – Example 2 . 83
Figure BB.6 – POD of a single measurement (logarithmic) for a MooM-evaluation with
1 ≤ M ≤ 50 . 84
Figure BB.7 – POD of a single measurement for a MooM-evaluation with 1 ≤ M ≤ 50 in
relation to  in the case of a normal distribution . 84

Table 1 – Minimum tests required for the verification of detection capability
requirements (see also 4.2.12.1) . 28
Table 2 – Overview of light interference tests . 40

IEC CDV 61496-3 © IEC 2023 – 5 – 44/1016/CDV
1 INTERNATIONAL ELECTROTECHNICAL COMMISSION
2 ____________
4 SAFETY OF MACHINERY –
5 ELECTRO-SENSITIVE PROTECTIVE EQUIPMENT –
7 Part 3: Particular requirements
...