IEC TS 61496-5:2023

IEC TS 61496-5 ®
Edition 1.0 2023-08
TECHNICAL
SPECIFICATION
colour
inside
Safety of machinery – Electro-sensitive protective equipment –
Part 5: Particular requirements for radar-based protective devices

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IEC TS 61496-5 ®
Edition 1.0 2023-08
TECHNICAL
SPECIFICATION
colour
inside
Safety of machinery – Electro-sensitive protective equipment –

Part 5: Particular requirements for radar-based protective devices

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS  13.110; 29.260.99 ISBN 978-2-8322-7299-2

– 2 – IEC TS 61496-5:2023 © IEC 2023
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 8
3 Terms and definitions . 8
4 Functional, design and environmental requirements . 10
4.1 Functional requirements . 10
4.1.1 Normal operation . 10
4.1.3 Types of ESPE . 10
4.1.6 Zone with limited position accuracy . 10
4.2 Design requirements . 11
4.2.2 Fault detection requirements . 11
4.2.12 Integrity of the RPD detection capability . 12
4.2.13 Test targets for type testing . 14
4.2.14 Radiation frequencies . 15
4.2.15 Radiation intensity . 15
4.2.16 Mechanical construction . 15
4.3 Environmental requirements . 15
4.3.5 Radio interference . 15
4.3.6 Pollution interference . 16
4.3.7 Interference by surrounding objects . 16
4.3.8 Manual interference . 16
4.3.9 Drift and ageing of components . 16
5 Testing . 16
5.1.2 Test conditions . 17
5.2 Functional tests . 18
5.2.1 Sensing function . 18
5.2.2 Response time . 20
5.2.3 Limited functional tests . 24
5.2.9 Test target for type testing . 25
5.2.10 Position accuracy . 25
5.2.11 Sensitivity . 25
5.2.12 Influences on detection . 26
5.2.13 Radiation frequencies . 26
5.2.14 Radiation intensity . 27
5.2.15 Mechanical construction . 27
5.3 Performance testing under fault conditions . 27
5.3.2 Type 1 ESPE . 27
5.3.3 Type 2 ESPE . 27
5.3.4 Type 3 ESPE . 27
5.3.5 Type 4 ESPE . 27
5.4 Environmental tests . 27
5.4.6 Radio frequency interference . 27
5.4.7 Interference by surrounding objects . 31
5.4.8 Manual interference . 40
6 Marking for identification and for safe use . 40

6.1 General . 40
7 Accompanying documents . 41
Annex A (normative) Optional functions of the ESPE . 42
Annex BB (informative) Relationship between resolution cell and probability of
detection . 44
Annex CC (informative) Corner reflector . 47
Bibliography . 49

Figure 1 – Definition of zones inside field of view of an RPD . 13
Figure 2 – Radial approaches . 21
Figure 3 – Picture illustrating a perpendicular approach (top view) . 22
Figure 4 – Overhead setup. 23
Figure 5 – Sensitivity test setup . 26
Figure 6 – Test setup for continuous wave interference . 29
Figure 7 – Example of placement of several additional RPDs . 30
Figure 8 – Examples of interfering by moving object setup . 32
Figure 9 – Typical installation for the static object interference test . 34
Figure 10 – Example of setup for interference in the zone with limited position
accuracy . 36
Figure 11 – Example of setup for occlusion . 38
Figure 12 – Example of detection with high RCS target test setup. 39
Figure BB.1 – Relationship between position accuracy and detection zone . 44
Figure BB.2 – Relationship between resolution cell and the probabilistic part of the
tolerance zone . 45
Figure BB.3 – Relationship between resolution cell and tolerance zone . 46
Figure CC.1 – Example of a trihedral corner reflector . 47
Figure CC.2 – Example values of σ for illuminating radars at 24 GHz and 80 GHz . 48

Table 51 – Minimum tests required for the verification of detection capability
requirements (see also 4.2.12). 19

– 4 – IEC TS 61496-5:2023 © IEC 2023
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SAFETY OF MACHINERY –
ELECTRO-SENSITIVE PROTECTIVE EQUIPMENT –

Part 5: Particular requirements for radar-based protective devices

FOREWORD
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