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TECHNICAL SPECIFICATION CLC/TS 62046
SPECIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION June 2005

ICS 13.110


English version


Safety of machinery –
Application of protective equipment
to detect the presence of persons
(IEC 62046:2004)


 Sicherheit von Maschinen –
Anwendung von Schutzausrüstungen zur
Anwesenheitserkennung von Personen
(IEC 62046:2004)






This Technical Specification was approved by CENELEC on 2004-08-28.

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, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden,
Switzerland and 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


© 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. CLC/TS 62046:2005 E

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CLC/TS 62046:2005 - 2 -
Foreword
The text of the Technical Specification IEC/TS 62046:2004, prepared by IEC TC 44, Safety of
machinery, was submitted to the formal vote and was approved by CENELEC as CLC/TS 62046 on
2004-08-28.
The following date was fixed:
– latest date by which the existence of the CLC/TS
has to be announced at national level (doa) 2005-09-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the Technical Specification IEC/TS 62046:2004 was approved by CENELEC as a
Technical Specification without any modification.
__________

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- 3 - CLC/TS 62046:2005
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 Where an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
– – Safety of machinery - Electro-sensitive CLC/TS 50418 2004
protective equipment - Passive infra-red
protective devices (PIPDs)
IEC 60204-1 1997 Safety of machinery - Electrical equipment EN 60204-1 1997
of machines
Part 1: General requirements
IEC 61496-1 (mod) 2004 Safety of machinery - Electro-sensitive EN 61496-1 2004
protective equipment
Part 1: General requirements and tests
IEC 61496-2 1997 Part 2: Particular requirements for CLC/TS 61496-2 2003
equipment using active opto-electronic
protective devices (AOPD)
IEC 61496-3 2001 Part 3: Particular requirements for Active EN 61496-3 2001
Opto-electronic Protective Devices
responsive to Diffuse Reflection (AOPDDR)
IEC 62061 2005 Safety of machinery - Functional safety of EN 62061 2005
electrical, electronic and programmable
control systems
ISO 12100-1 2003 Safety of machinery EN ISO 12100-1 2003
Basic concepts, general principles for
design
Part 1: Basic terminology, methodology
ISO 12100-2 2003 Part 2: Technical principles EN ISO 12100-2 2003
ISO 13849-1 1999 Safety of machinery - Safety-related parts - -
of control systems
Part 1: General principles for design
ISO 13855 2002 Safety of machinery - -
Positioning of protective equipment with
respect to the approach speeds of parts of
the human body
ISO 13856-1 2001 Safety of machinery - -
Pressure-sensitive protective devices
Part 1: General principles for design and
testing of pressure-sensitive mats and
pressure-sensitive floors

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CLC/TS 62046:2005 - 4 -
Publication Year Title EN/HD Year
ISO 14118 2000 Safety of machinery - -
Prevention of unexpected start-up
ISO 14121 1999 Safety of machinery - -
Principles of risk assessment
_____________

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TECHNICAL IEC


SPECIFICATION TS 62046





First edition
2004-05


Safety of machinery –
Application of protective equipment
to detect the presence of persons :

 IEC 2004  Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or
mechanical, including photocopying and microfilm, without permission in writing from 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
PRICE CODE
Commission Electrotechnique Internationale XA

International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue

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– 2 – TS 62046  IEC:2004(E)
CONTENTS
FOREWORD.4
INTRODUCTION.6

1 Scope.8
2 Normative references .8
3 Terms, definitions and abbreviations .9
3.1 Terms and definitions .9
3.2 Abbreviations .15
4 Selection .16
4.1 Procedure (relationship with ISO 12100 (all parts)).16
4.2 Machine characteristics .18
4.2.1 Suitability of protective equipment .18
4.2.2 Suitability of protective equipment as a trip device .18
4.3 Environmental characteristics.18
4.4 Uses of protective equipment .20
4.5 Human characteristics .22
4.6 Protective equipment characteristics .23
4.7 Machine control system functions associated with the application of
protective equipment .24
5 General application requirements .26
5.1 Positioning and configuration of the protective equipment detection zone.26
5.2 Integration with the safety-related control system .26
5.3 Performance of protective equipment .26
5.4 Stopping performance monitoring .28
5.5 Muting .28
5.6 Reinitiation of cyclic operation by the protective equipment .30
5.7 Start interlock.31
5.8 Restart interlock .31
5.9 Blanking .31
6 Particular application requirements for specific protective equipment .31
6.1 AOPDs .32
6.2 AOPDDRs .34
6.3 PIPDs.35
6.4 Pressure-sensitive mats and floors.35
7 Commissioning.37
8 Information for safe use.38

Annex A (informative) Examples of interfacing ESPEs to a machine .39
Annex B (informative) Environmental parameters of protective equipment product
standards.40
Annex C (informative) Application examples .44
Annex D (informative)  Protective devices for the detection of the position of a person .50

Bibliography.53

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TS 62046 © IEC:2004(E) – 3 –
Figure 1 – Relationship of this Technical Specification to other standards .7
Figure 2 – Risk reduction process (Figure 2 of ISO 12100-1) .17
Figure 3 – Example of the effect of reflective surfaces .32
Figure 4 – Example of use of blanking .34
Figure A.1 – Integration with the control system.39
Figure A.2 – Integration with a safety-related control system .39
Figure C.1 – Protective equipment used as a trip device (example 1) .44
Figure C.2 – Protective equipment used as a trip device (example 2) .44
Figure C.3 – Protective equipment used as combined trip and presence sensing device.45
Figure C.4 – Protective equipment used as a combined trip and presence sensing
device (example 3) .45
Figure C.5 – Horizontal AOPD .46
Figure C.6 – Vertical AOPD .47
Figure C.7 – Increased separation distance .48
Figure C.8 – Additional mechanical protection .49
Figure C.9 – Use of a trip device.49

Table 1 – Beam heights for light beam devices .33
Table B.1 – List of environmental considerations to assist the selection of a protective
equipment.41

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– 4 – TS 62046  IEC:2004(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

SAFETY OF MACHINERY –
APPLICATION OF PROTECTIVE EQUIPMENT
TO DETECT THE PRESENCE OF PERSONS


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, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
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 IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
The main task of IEC technical committees is to prepare International Standards. In
exceptional circumstances, a technical committee may propose the publication of a Technical
Specification when
• the required support cannot be obtained for the publication of an International Standard,
despite repeated efforts, or
• the subject is still under technical development or where, for any other reason, there is the
future but no immediate possibility of an agreement on an International Standard.
Technical Specifications are subject to review within three years of publication to decide
whether they can be transformed into International Standards.
IEC TS 62046, which is a Technical Specification, has been prepared by IEC technical
committee 44: Safety of machinery – Electrotechnical aspects.

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TS 62046 © IEC:2004(E) – 5 –
The text of this Technical Specification is based on the following documents:
Enquiry Draft Report on voting
44/437/DTS 44/451/RVC

Full information on the voting for the approval of this Technical Specification can be found in
the report on voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until
2006. At this date, the publication will be
• transformed into an International Standard;
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
A bilingual edition of this Technical Specification may be issued at a later date.

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– 6 – TS 62046  IEC:2004(E)
INTRODUCTION
This Technical Specification addresses the application of protective equipment, which
employs a sensing device(s) to detect person(s) in or approaching an area, in order to reduce
or minimize a risk from hazardous parts of machinery, without providing a physical barrier.
This specification provides information on the manner in which the protective equipment
should be applied to the machine to achieve the targeted level of risk reduction.
The objective of this specification is to assist: standards writing committees responsible for
developing machine standards ("C" Standards), machine designers, manufacturers and
refurbishers, machine safety certification organizations, workplace authorities and others on
the proper application of protective equipment to machinery.
Figures 1 and 2 show the general context and the intended use of this specification.
Clauses 1 to 5, 7 and 8 of this specification apply to all protective equipment included in the
scope, Clause 6 contains guidance for the application of specific kinds of protective
equipment.

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TS 62046 © IEC:2004(E) – 7 –

From
ISO 12100-1
(see Figure 2)
Preliminary decision to use No
Use other protective
protective equipment?
measures
IEC 62046
Yes
General requirements for the safety
Environmental conditions
functions to be provided
Conditions for use

Functional requirements
For trip function or presence sensing
Human and machine properties
function see ISO 12100, ISO 13855;
For prevention of unexpected
start-up see ISO 14118
Standards giving general
Protective equipment Preliminary selection of a
requirements on the design of the
manufacturer’s specific kind of protective
safety related control system
information for use equipment - ISO 13849 (all parts)
IEC 62046 - IEC 62061
DETAILED DESIGN AND FINAL SELECTION
Integration into Dimensioning and
Specific machine
safety-related control positioning
(C-type) standards
system
giving specific
ISO 13849   IEC 62061 ISO 13855
requirements for the
(all parts)
application of
IEC 62046
sensitive protective
equipment
Verification,
validation and
commissioning
IEC 62046
To ISO 12100-1
(see Figure 2)

IEC  404/04
Figure 1 – Relationship of this Technical Specification to other standards
(see also Figure 2)

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– 8 – TS 62046  IEC:2004(E)
SAFETY OF MACHINERY –
APPLICATION OF PROTECTIVE EQUIPMENT
TO DETECT THE PRESENCE OF PERSONS



1 Scope
This Technical Specification specifies requirements for the selection, positioning,
configuration and commissioning, of protective equipment to detect the presence of persons
in order to protect those persons from dangerous part(s) of machinery in industrial
applications. This specification covers the application of electro-sensitive protective
equipment (ESPE) specified in IEC 61496 (all parts) and pressure sensitive mats and floors
specified in ISO 13856-1.
It takes into account the characteristics of the machinery, the protective equipment, the
environment and human interaction by persons of 14 years and older.
NOTE This Technical Specification may also be used for guidance in the application of other protective devices.
2 Normative references
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.
IEC 60204-1, Safety of machinery – Electrical equipment of machines – Part 1: General
requirements
IEC 61496-1:2004, Safety of Machinery – Electro-sensitive protective equipment – General
requirements and tests
IEC 61496-2:1997, Safety of machinery – Electro-sensitive protective equipment – Part 2:
Particular requirements for equipment using active opto-electronic protective devices
(AOPDs)
IEC 61496-3:2001, Safety of machinery – Electro-sensitive protective equipment – Particular
requirements for equipment for Active Opto-Electronic Protective Devices responsive to
Diffuse Reflection (AOPDDR)
IEC 62061, Safety of machinery – Functional safety of safety related electrical, electronic and
programmable control systems
ISO 12100-1: 2003, Safety of machinery – Basic concepts, general principles for design –
Part 1: Basic terminology, methodology
ISO 12100-2: 2003, Safety of machinery – Basic concepts, general principles for design –
Part 2: Technical principles
ISO 13849-1:1999, Safety of Machinery – Safety-related parts of control systems – Part 1:
General principles for design
ISO 13855:2002, Safety of machinery – Positioning of protective equipment with respect to
the approach speeds of parts of the human body
ISO 13856-1:2001, Safety of machinery – Pressure-sensitive protective devices – Part 1:
General principles for design and testing of pressure-sensitive mats and pressure-sensitive
floors
ISO 14118:2000, Safety of machinery – Prevention of unexpected start-up

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TS 62046 © IEC:2004(E) – 9 –
ISO 14121:1999, Safety of machinery – Principles of risk assessment
CLC/TS 50418: 2004, Safety of Machinery - Electro-sensitive protective equipment - Passive
infra-red protective devices (PIPDs)
3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this technical specification, the following terms and definitions apply.
3.1.1
blanking
optional function that permits an object of a size greater than the detection capability of the
ESPE to be located within the detection zone without causing an OFF state of the OSSD(s)
3.1.2
detection capability
sensing function parameter limit specified by the supplier that will cause actuation of the
protective equipment
NOTE Adapted from IEC 61496-1.
3.1.3
detection zone
zone within which a specified test piece will be detected by the electro-sensitive protective
equipment
NOTE 1 ISO 13856 uses the term “effective sensing area” when describing pressure-sensitive mats and floors. In
this document the terms “detection zone” and “effective sensing area” are used synonymously.
NOTE 2 Adapted from IEC 61496-1.
3.1.4
effective sensing area
part of the top surface area of the sensor or a combination of the pressure-sensitive mat or
pressure-sensitive floor within which a response to an actuating force will take place
NOTE IEC 61496-1 uses the term “detection zone” when describing electro-sensitive protective equipment. In this
document the terms “detection zone” and “effective sensing area” are used synonymously.
NOTE Adapted from ISO 13856-1.
3.1.5
failure (of equipment)
termination of the ability of an item to perform a required function
NOTE 1 After failure the item has a fault.
NOTE 2 "Failure" is an event, as distinguished from "fault", which is a state.
NOTE 3 This concept as defined does not apply to items consisting of software only.
[IEV-191-04-01]
3.1.6
failure to danger
failure which prevents or delays all output signal switching devices going to, and/or remaining
in the OFF-state in response to a condition which, in normal operation, would result in their so
doing
[IEC 61496-1, 3.8]

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– 10 – TS 62046  IEC:2004(E)
3.1.7
fault
state of an item characterized by its inability to perform a required function, excluding the
inability during preventive maintenance or other planned actions, or due to lack of external
resources
[IEV 191-05-01]
NOTE 1 A fault is often the result of a failure of the item itself, but may exist without prior failure.
NOTE 2 In the field of machinery, the English term `fault’ is commonly used in accordance with the definition in
IEV 191-05-01, whereas the French item “défaut” and the German term “fehler” are used rather than the term
“panne” and “fehlzustand” that appear with this definition.
NOTE 3 In practice, the terms “fault” and “failure” (see 3.1.5) are often used synonymously.
3.1.8
hazard
potential source of harm
[ISO 12100-1, 3.6]
NOTE The word "hazard" is generally used in conjunction with other words defining its origin or the nature of the
expected injury or damage to health: electrical shock hazard, crushing hazard, shearing hazard, toxic hazard, etc.
3.1.9
hazardous situation
circumstance in which a person is exposed to at least one hazard. The exposure can
immediately or over a period of time result in harm
[ISO 12100-1, 3.9]
3.1.10
hazard zone (danger zone)
any space within and/or around machinery in which a person can be exposed to a hazard
[ISO 12100-1, 3.10]
NOTE The hazard generating the risk envisaged in this definition:
– either is permanently present during the intended use of the machine (motion of hazardous moving elements,
electric arc during a welding phase);
– or can appear unexpectedly (unintended/unexpected start-up).
3.1.11
integrator
individual or group of individuals responsible for selecting, configuring, installing and/or
interfacing the protective equipment to achieve the safeguarding identified by the risk
assessment
3.1.12
lock-out condition
condition, initiated by a fault, preventing normal operation of the protective equipment which
is automatically attained when all output signal switching devices (OSSDs) and, where
applicable, all final switching devices (FSDs) and secondary switching devices (SSD) are
signalled to go to the OFF-state
[IEC 61496-1, 3.13 modified]

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TS 62046 © IEC:2004(E) – 11 –
3.1.13
muting
temporary automatic suspension of a safety function(s) by safety-related parts of the control
system
[IEC 61496-1, 3.16]
NOTE When muting is provided as part of the protective equipment and the protective equipment is muted, the
OSSD(s) remain in the `ON’ state upon activation of the protective equipment sensing function and safety is
maintained by other means.
3.1.14
overall system stopping performance
time interval resulting from the sum of the protective equipment response time and the time to
the cessation of hazardous machine operation
[IEC 61496-1, 3.20]
3.1.15
Passive Infrared Protective Device
PIPD
device whose sensing function is performed by a receiving element(s) detecting thermal
radiation emitted by an object placed in, or moving within, the specified detection zone
3.1.16
periodic test
technique which stimulates or simulates the input of the protective equipment sensing
device(s) to determine if the protective equipment OSSD(s) go to the off state when required to
do so
NOTE The test input signal is usually produced by an external machine test input and is performed at intervals,
determined by the risk assessment, which provide a reasonable degree of confidence that the intended risk
reduction will be achieved.
3.1.17
protective equipment
assembly of devices using non-contact (electro-sensitive) or contact (pressure sensitive)
sensing means for detection of the presence of person(s) or parts of person(s) for the purpose
of controlling hazards associated with machinery and comprising as a minimum:
– a sensing device;
– control and monitoring devices;
– output signal switching devices
NOTE The safety related control system associated with the protective equipment, or the protective equipment
itself, can include additional safety features such as secondary switching devices, muting function, stopping
performance monitoring, etc.
3.1.18
presence sensing function
detection of the presence of a person, or a part of a person, while in a hazardous zone to
enable prevention of hazardous situations such as unexpected/unintended start-up of the
machine

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