IEC 60947-5-2:2007

Low-voltage switchgear and controlgear - Part 5-2: Control circuit devices and switching elements - Proximity switches

This part of IEC 60947 applies to inductive and capacitive proximity switches that sense the presence of metallic and/or non-metallic objects, ultrasonic proximity switches that sense the presence of sound reflecting objects, photoelectric proximity switches that sense the presence of objects and non-mechanical magnetic proximity switches that sense the presence of objects with a magnetic field. These proximity switches are self-contained, have semiconductor switching elements(s) and are intended to be connected to circuits, the rated voltage of which does not exceed 250 V 50 Hz/60 Hz a.c. or 300 V d.c. This Standard is not intended to cover proximity switches with analogue outputs. The main changes with respect to the previous edition are as follows:-modification of Table 3;-modifications of voltage dips and voltage interruptions immunity tests, in Table 8;-modification of status of Annex A, now informative.

Appareillage à basse tension - Partie 5-2: Appareils et éléments de commutation pour circuits de commande - Détecteurs de proximité

La présente partie de la CEI 60947 s'applique aux détecteurs de proximité inductifs et capacitifs qui détectent la présence d'objets métalliques et/ou non métalliques, aux détecteurs de proximité ultrasoniques qui détectent la présence d'objets réfléchissants les ultrasons, aux détecteurs de proximité photoélectriques qui détectent la présence d'objets et aux détecteurs de proximité magnétiques non mécaniques qui détectent la présence d'objets avec un champ magnétique. Ces détecteurs de proximité sont des appareils complets, comprennent des éléments de commutation à semi-conducteurs et sont destinés à être connectés à des circuits dont la tension nominale n'excède pas 250 V 50 Hz/60 Hz courant alternatif ou 300 V courant continu. La présente norme n'est pas prévue pour couvrir les détecteurs de proximité analogiques. Par rapport à l'édition précédente, les changements majeurs sont les suivants:-la modification du Tableau 3;-les modifications concernant les essais d'immunité aux creux de tension et aux interruptions de tension, au Tableau 8;-la modification du statut de l'Annexe A, désormais informative.

General Information

• Status: Published
• Publication Date: 08-Oct-2007
• ICS: 29.120.40 - Switches
• ICS: 29.130.20 - Low voltage switchgear and controlgear
• Technical Committee: SC 121A - Low-voltage switchgear and controlgear
• Drafting Committee: WG 3 - TC 121/SC 121A/WG 3
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 18-Oct-2019

Relations

• Amended By: IEC 60947-5-2:2007/AMD1:2012 - Amendment 1 - Low-voltage switchgear and controlgear - Part 5-2: Control circuit devices and switching elements - Proximity switches
• Effective Date: 05-Sep-2023
• Revises: IEC 60947-5-2:1997 - Low-voltage switchgear and controlgear - Part 5-2: Control circuit devices and switching elements - Proximity switches
• Effective Date: 05-Sep-2023
• Revises: IEC 60947-5-2:1997/AMD2:2003 - Amendment 2 - Low-voltage switchgear and controlgear - Part 5-2: Control circuit devices and switching elements - Proximity switches
• Effective Date: 05-Sep-2023
• Revised: IEC 60947-5-2:2019 - Low-voltage switchgear and controlgear - Part 5-2: Control circuit devices and switching elements - Proximity switches
• Effective Date: 05-Sep-2023
• Revises: IEC 60947-5-2:1997/AMD1:1999 - Amendment 1 - Low-voltage switchgear and controlgear - Part 5-2: Control circuit devices and switching elements - Proximity switches
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60947-5-2
Edition 3.0 2007-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Low-voltage switchgear and controlgear –
Part 5-2: Control circuit devices and switching elements – Proximity switches

Appareillage à basse tension –
Partie 5-2: Appareils et éléments de commutation pour circuits de commande –
Détecteurs de proximité
All rights reserved. Unless otherwise specified, 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 either IEC or

IEC's member National Committee in the country of the requester.
If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,
please contact the address below or your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de la CEI ou du Comité national de la CEI du pays du demandeur.

Si vous avez des questions sur le copyright de la CEI ou si vous désirez obtenir des droits supplémentaires sur cette

publication, utilisez les coordonnées ci-après ou contactez le Comité national de la CEI de votre pays de résidence.

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Switzerland
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About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

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IEC 60947-5-2
Edition 3.0 2007-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Low-voltage switchgear and controlgear –
Part 5-2: Control circuit devices and switching elements – Proximity switches

Appareillage à basse tension –
Partie 5-2: Appareils et éléments de commutation pour circuits de commande –
Détecteurs de proximité
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
XD
CODE PRIX
ICS 29.120.40; 29.130.20 ISBN 2-8318-9318-6

– 2 – 60947-5-2 © IEC:2007
CONTENTS
FOREWORD.6

1 General .8

1.1 Scope and object.8

1.2 Normative references .8

2 Definitions .10

2.1 Basic definitions .12

2.2 Parts of a proximity switch .13
2.3 Operation of a proximity switch .15
2.4 Switching element characteristics .17
3 Classification .20
3.1 Classification according to sensing means .20
3.2 Classification according to the mechanical installation.20
3.3 Classification according to the construction form and size .20
3.4 Classification according to switching element function.20
3.5 Classification according to type of output .20
3.6 Classification according to method of connection .20
4 Characteristics.20
4.1 Summary of characteristics.20
4.2 Operating conditions.21
4.3 Rated and limiting values for the proximity switch and switching element(s).23
4.4 Utilization categories for the switching element .24
5 Product information.25
5.1 Nature of information – Identificatoin.25
5.2 Marking .26
5.3 Instruction for installation, operation and maintenance .26
6 Normal service, mounting and transport conditions.26
6.1 Normal service conditions.26
6.2 Conditions during transport and storage.27
6.3 Mounting .27
7 Constructional and performance requirements .27
7.1 Constructional requirements .27

7.2 Performance requirements.30
7.3 Physical dimensions .40
7.4 Shock and vibration .40
8 Tests .40
8.1 Kinds of tests.41
8.2 Compliance with constructional requirements.41
8.3 Performances .41
8.4 Testing of operating distances .50
8.5 Testing for the frequency of operating cycles .54
8.6 Verification of the electromagnetic compatibility .58
8.7 Test results and test report .59

Annex A (informative) Typical dimensions and operating distances of proximity

60947-5-2 © IEC:2007 – 3 –
switches.

Annex B (normative) Class II proximity switches insulated by encapsulation –

Requirements and tests .86

Annex C (normative) Additional requirements for proximity switches with integrally

connected cables .90

Annex D (normative) Integral connectors for plug-in proximity switches.93

Annex E (normative) Additional requirements for proximity switches suitable for use in
strong magnetic fields .97

Annex F (informative) Symbols for proximity switches. 102

Figure 1 – Sensing range and operating range of photoelectric proximity switches (see
7.2.1.3 and 8.4).16
Figure 2 – Ultrasonic proximity switch operating distances.18
Figure 3 – Relationship between operating distances of inductive and capacitive
proximity switches (see 4.2.1, 7.2.1.3 and 8.4.1) .22
Figure 4 – Relationship between operating distances of ultrasonic proximity switches
(see 4.2.2, 7.2.1.3 and 8.4.1) .22
Figure 5 – Method of measuring the operating distance (8.3.2.1 and 8.4.1) .43
Figure 6 – Test circuit for the verification of time delay before availability (see 7.2.1.7
and 8.3.3.2.1).44
Figure 7 – Signal output across load in Figure 6 (see 8.3.3.2.1) .45
Figure 8 – Test circuit for the verification of minimum operational current OFF-state
current, voltage drop and independent snap action (see 8.3.3.2.2, 8.3.3.2.3, 8.3.3.2.4
and 8.3.3.2.5).46
Figure 9 – Test circuit for the verification of making and breaking capability (see 8.3.3.5) .49
Figure 10 – Short-circuit testing (see 8.3.4.2) .50
Figure 11 – Testing of the sensing range (see 8.4) .53
Figure 12 – Methods for measuring the operating frequency of inductive, capacitive and
non-mechanical magnetic proximity switches (if applicable) .54
Figure 13 – Methods for measuring the operating frequency f, ultrasonic proximity
switch .55
Figure 14 – Output signal of direct current proximity switch during the measurement of
operating frequency f .55
Figure 15 − Measurement means for turn-on time t and turn-off time t .56
on off
Figure 16 − Turn-on time t measurement.57
on
Figure 17 – Turn-off time t measurement .57
off
Figure A.1 (IA) – Dimensions.60
Figure A.2 (IA) – Installation (mounting) .62
Figure A.1 (IB) – Dim
...

IEC 60947-5-2 ®
Edition 3.1 2012-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Low-voltage switchgear and controlgear –
Part 5-2: Control circuit devices and switching elements – Proximity switches

Appareillage à basse tension –
Partie 5-2: Appareils et éléments de commutation pour circuits de commande –
Détecteurs de proximité
All rights reserved. Unless otherwise specified, 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
either IEC or IEC's member National Committee in the country of the requester.
If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,

please contact the address below or your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite ni
utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie et les

microfilms, sans l'accord écrit de la CEI ou du Comité national de la CEI du pays du demandeur.

Si vous avez des questions sur le copyright de la CEI ou si vous désirez obtenir des droits supplémentaires sur cette

publication, utilisez les coordonnées ci-après ou contactez le Comité national de la CEI de votre pays de résidence.

IEC Central Office Tel.: [phone]
3, rue de Varembé Fax: [phone]
CH-1211 Geneva 20 [e-mail]
Switzerland www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.

Useful links:
IEC publications search - www.iec.ch/searchpub Electropedia - www.electropedia.org
The advanced search enables you to find IEC publications The world's leading online dictionary of electronic and
by a variety of criteria (reference number, text, technical electrical terms containing more than 30 000 terms and
committee,…). definitions in English and French, with equivalent terms in
It also gives information on projects, replaced and additional languages. Also known as the International
withdrawn publications. Electrotechnical Vocabulary (IEV) on-line.

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also once a month by email. Customer Service Centre: [e-mail].

A propos de la CEI
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Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications CEI
Le contenu technique des publications de la CEI est constamment revu. Veuillez vous assurer que vous possédez
l’édition la plus récente, un corrigendum ou amendement peut avoir été publié.

Liens utiles:
Recherche de publications CEI - www.iec.ch/searchpub Electropedia - www.electropedia.org
La recherche avancée vous permet de trouver des Le premier dictionnaire en ligne au monde de termes
publications CEI en utilisant différents critères (numéro de électroniques et électriques. Il contient plus de 30 000
référence, texte, comité d’études,…). termes et définitions en anglais et en français, ainsi que
Elle donne aussi des informations sur les projets et les les termes équivalents dans les langues additionnelles.
publications remplacées ou retirées. Egalement appelé Vocabulaire Electrotechnique
International (VEI) en ligne.
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Disponible en ligne et aussi une fois par mois par email. cette publication ou si vous avez des questions
contactez-nous: [e-mail].
IEC 60947-5-2 ®
Edition 3.1 2012-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Low-voltage switchgear and controlgear –

Part 5-2: Control circuit devices and switching elements – Proximity switches

Appareillage à basse tension –

Partie 5-2: Appareils et éléments de commutation pour circuits de commande –

Détecteurs de proximité
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX CR
ICS 29.120.40; 29.130.20 ISBN 978-2-8322-0408-5

– 2 – 60947-5-2 © IEC:2007+A1:2012

CONTENTS
FOREWORD . 6

1 General . 8

1.1 Scope and object . 8

1.2 Normative references . 8

2 Definitions . 10

2.1 Basic definitions . 12

2.2 Parts of a proximity switch . 13
2.3 Operation of a proximity switch . 15
2.4 Switching element characteristics . 17
3 Classification . 20
3.1 Classification according to sensing means . 20
3.2 Classification according to the mechanical installation . 20
3.3 Classification according to the construction form and size . 20
3.4 Classification according to switching element function . 20
3.5 Classification according to type of output . 20
3.6 Classification according to method of connection . 20
4 Characteristics . 20
4.1 Summary of characteristics . 20
4.2 Operating conditions . 21
4.3 Rated and limiting values for the proximity switch and switching element(s) . 23
4.4 Utilization categories for the switching element . 24
5 Product information. 25
5.1 Nature of information – Identificatoin . 25
5.2 Marking . 26
5.3 Instructions for installation, operation and maintenance . 26
6 Normal service, mounting and transport conditions . 26
6.1 Normal service conditions . 26
6.2 Conditions during transport and storage . 27
6.3 Mounting . 27
7 Constructional and performance requirements . 27
7.1 Constructional requirements . 27

7.2 Performance requirements . 31
7.3 Physical dimensions . 40
7.4 Shock and vibration . 40
8 Tests . 41
8.1 Kinds of tests. 41
8.2 Compliance with constructional requirements . 41
8.3 Performances . 42
8.4 Testing of operating distances . 50
8.5 Testing for the frequency of operating cycles . 54
8.6 Verification of the electromagnetic compatibility . 58
8.7 Test results and test report . 59

60947-5-2 © IEC:2007+A1:2012 – 3 –

Annex A (informative) Typical dimensions and operating distances of proximity

switches . 60

Annex B (normative) Class II proximity switches insulated by encapsulation –

Requirements and tests . 86

Annex C (normative) Additional requirements for proximity switches with integrally

connected cables . 90

Annex D (normative) Integral connectors for plug-in proximity switches . 93

Annex E (normative) Additional requirements for proximity switches suitable for use in

strong magnetic fields . 98

Annex F (informative) Symbols for proximity switches . 103

Figure 1 – Sensing range and operating range of photoelectric proximity switches (see
7.2.1.3 and 8.4) . 16
Figure 2 – Ultrasonic proximity switch operating distances . 18
Figure 3 – Relationship between operating distances of inductive and capacitive
proximity switches (see 4.2.1, 7.2.1.3 and 8.4.1) . 22
Figure 4 – Relationship between operating distances of ultrasonic proximity switches
(see 4.2.2, 7.2.1.3 and 8.4.1) . 22
Figure 5 – Method of measuring the operating distance (8.3.2.1 and 8.4.1) . 43
Figure 6 – Test circuit for the verification of time delay before availability (see 7.2.1.7
and 8.3.3.2.1). 45
Figure 7 – Signal output across load in Figure 6 (see 8.3.3.2.1) . 45
Figure 8 – Test circuit for the verification of minimum operational current OFF-state
current, voltage drop and independent snap action (see 8.3.3.2.2, 8.3.3.2.3, 8.3.3.2.4
and 8.3.3.2.5). 46
Figure 9 – Test circuit for the verification of making and breaking capability (see 8.3.3.5) . 49
Figure 10 – Short-circuit testing (see 8.3.4.2) . 50
Figure 11 – Testing of the sensing range (see 8.4) . 53
Figure 12 – Methods for measuring the operating frequency of inductive, capacitive and
non-mechanical magnetic proximity switches (if applicable) . 54
Figure 13 – Methods for measuring the operating frequency f, ultrasonic proximity
switch . 55
Figure 14 – Output signal of direct current proximity switch during the measurement of
operating frequency f . 55
Figure 15 − Measurement means for turn-on time t and turn-off time t . 56
on off
Figure 16 − Turn-on time t measurement .
...