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

IEC 60947-5-2:2019 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.
This fourth edition cancels and replaces the third edition published in 2007 and Amendment 1:2012. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
update of the scope;
adaptation and update of the construction requirements according to IEC Guide 116 (e.g. material requirements, artificial optical radiation, instruction requirements, hot surface, unattended operation, foreseeable misuse…);
modification of the specifications concerning the sensing range and operating distance;
new definitions for photoelectric proximity switch type D with background suppression;
integration of the requirements and test procedures of photoelectric proximity switch type D with background suppression;
update of EMC requirements in Table 9 and Table 10;
integration of environmental information requirements and environmental condition by referencing Annexes O, W and Q of IEC 60947-1:2007, IEC 60947-1:2007/AMD1:2010 and IEC 60947-1:2007/AMD2:2014;
modification of impulse withstand voltage test (5.3.1.3, 9.3.3.4.5);
modification of the references in the (normative) standard body to the (informative) Annex A;
major update of Annex A (definitions update, new dimensions and shapes);
update of C.9.1.1;
update of Annex D in order to consider new connector types and normative references;
update of Annex F (additional symbols for photoelectric proximity switches).

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

L’IEC 60947-5-2:2019 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 réfléchissant 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.
Cette quatrième édition annule et remplace la troisième édition parue en 2007 et l'Amendement 1:2012. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
mise à jour du domaine d’application;
adaptation et mise à jour des exigences relatives à la construction, conformément à l’IEC Guide 116 (par exemple les exigences relatives aux matériaux, le rayonnement optique artificiel, les exigences relatives aux instructions, les surfaces chaudes, le fonctionnement sans surveillance, les cas prévisibles d’usage inapproprié…);
modification des spécifications concernant le domaine de détection et la portée;
nouvelles définitions pour le détecteur de proximité photoélectrique de type D à effacement d’arrière-plan;
intégration des exigences et des modes opératoires d’essai relatifs au détecteur de proximité photoélectrique de type D à effacement d’arrière-plan;
mise à jour des exigences de CEM dans le Tableau 9 et le Tableau 10;
intégration des exigences relatives aux données d’environnement et aux conditions d’environnement, en faisant référence aux Annexes O, W et Q de l’IEC 60947-1:2007, l’IEC 60947-1:2007/AMD1:2010 et l’IEC 60947-1:2007/AMD2:2014;
modification de l’essai de tension assignée de tenue aux chocs (5.3.1.3, 9.3.3.4.5);
modification du statut normatif des références données dans l’Annexe A, devenant une annexe informative;
mise à jour majeure de l’Annexe A (mise à jour des définitions, nouvelles dimensions et formes);
mise à jour de C.9.1.1;
mise à jour de l’Annexe D afin de tenir compte des nouveaux types de connecteurs et des nouvelles références normatives;
mise à jour de l’Annexe F (ajout de symboles pour les détecteurs de proximité photoélectriques).

General Information

Status
Published
Publication Date
17-Oct-2019
Current Stage
PPUB - Publication issued
Completion Date
18-Oct-2019
Ref Project

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IEC 60947-5-2
Edition 4.0 2019-10
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
IEC 60947-5-2:2019-10(en-fr)
---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
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---------------------- Page: 2 ----------------------
IEC 60947-5-2
Edition 4.0 2019-10
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
INTERNATIONALE
ICS 29.120.40; 29.130.20 ISBN 978-2-8322-7445-3

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 60947-5-2:2019 © IEC 2019
CONTENTS

FOREWORD ........................................................................................................................... 9

1 Scope ............................................................................................................................ 12

2 Normative references .................................................................................................... 13

3 Terms and definitions .................................................................................................... 14

3.1 Basic terms and definitions ................................................................................... 17

3.2 Parts of a proximity switch .................................................................................... 18

3.3 Operation of a proximity switch ............................................................................. 20

3.4 Switching element characteristics ......................................................................... 22

4 Classification ................................................................................................................. 24

4.1 General ................................................................................................................. 24

4.2 Classification according to sensing means ............................................................ 26

4.3 Classification according to the mechanical installation .......................................... 26

4.4 Classification according to the construction form and size ..................................... 26

4.5 Classification according to switching element function .......................................... 26

4.6 Classification according to type of output .............................................................. 26

4.7 Classification according to method of connection .................................................. 26

5 Characteristics .............................................................................................................. 26

5.1 General ................................................................................................................. 26

5.1.1 Summary of characteristics ............................................................................ 26

5.1.2 Operation of an inductive or capacitive proximity switch ................................ 26

5.1.3 Operation of an ultrasonic proximity switch .................................................... 27

5.1.4 Operation of a photoelectric proximity switch ................................................. 27

5.1.5 Operation of a magnetic proximity switch ....................................................... 27

5.2 Operating conditions ............................................................................................. 27

5.2.1 Operating conditions of inductive and capacitive proximity switches .............. 27

5.2.2 Operating distance (s) of an ultrasonic proximity switch ................................. 28

5.2.3 Operating distance (s) of a photoelectric proximity switch .............................. 29

5.3 Rated and limiting values for the proximity switch and switching element(s) .......... 31

5.3.1 Voltages ........................................................................................................ 31

5.3.2 Currents ........................................................................................................ 31

5.3.3 Rated supply frequency ................................................................................. 32

5.3.4 Frequency of operating cycles (f) ................................................................... 32

5.3.5 Normal load and abnormal load characteristics .............................................. 32

5.3.6 Short-circuit characteristics ........................................................................... 32

5.4 Utilization categories for the switching element ..................................................... 32

6 Product information ....................................................................................................... 33

6.1 Nature of information – Identification ..................................................................... 33

6.2 Marking ................................................................................................................. 34

6.2.1 General ......................................................................................................... 34

6.2.2 Terminal identification and marking ............................................................... 34

6.2.3 Functional markings....................................................................................... 34

6.3 Instructions for installation, operation and maintenance ........................................ 34

6.4 Environmental information .................................................................................... 35

6.4.1 Environmentally conscious design process (ECD process) ............................ 35

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IEC 60947-5-2:2019 © IEC 2019 – 3 –

6.4.2 Procedure to establish material declaration ................................................... 35

7 Normal service, mounting and transport conditions ........................................................ 35

7.1 Normal service conditions ..................................................................................... 35

7.1.1 General ......................................................................................................... 35

7.1.2 Ambient air temperature ................................................................................ 35

7.1.3 Altitude .......................................................................................................... 36

7.1.4 Climatic conditions ........................................................................................ 36

7.2 Conditions during transport and storage ................................................................ 36

7.3 Mounting ............................................................................................................... 36

8 Constructional and performance requirements ............................................................... 36

8.1 Constructional requirements ................................................................................. 36

8.1.1 Materials ....................................................................................................... 36

8.1.2 Current-carrying parts and their connections ................................................. 37

8.1.3 Clearances and creepage distances .............................................................. 38

8.1.4 Actuation ....................................................................................................... 38

8.1.5 Void ............................................................................................................... 38

8.1.6 Void ............................................................................................................... 38

8.1.7 Terminals ...................................................................................................... 38

8.1.8 Void ............................................................................................................... 40

8.1.9 Provisions for protective earthing ................................................................... 40

8.1.10 Degree of protection ...................................................................................... 40

8.1.11 Requirements for proximity switches with integrally connected cables ........... 40

8.1.12 Class II proximity switches ............................................................................. 41

8.1.13 Chemical stress ............................................................................................. 41

8.1.14 Equipment design .......................................................................................... 41

8.1.15 Protection against artificial optical radiation ................................................... 41

8.1.16 Biological and chemical effects ...................................................................... 42

8.1.17 Unattended operation .................................................................................... 42

8.1.18 Safety related security ................................................................................... 42

8.1.19 Requirements for embedded software ............................................................ 42

8.2 Performance requirements .................................................................................... 42

8.2.1 Operating conditions ...................................................................................... 42

8.2.2 Temperature-rise ........................................................................................... 46

8.2.3 Dielectric properties ....................................................................................... 47

8.2.4 Ability to make and break under normal load and abnormal load

conditions ...................................................................................................... 48

8.2.5 Conditional short-circuit current ..................................................................... 49

8.2.6 Electromagnetic compatibility (EMC) ............................................................. 49

8.3 Physical dimensions ............................................................................................. 53

8.4 Shock and vibration and special environmental conditions .................................... 53

8.4.1 Shock ............................................................................................................ 53

8.4.2 Vibration ........................................................................................................ 53

8.4.3 Results to be obtained ................................................................................... 53

8.4.4 Special environmental conditions – damp heat, salt mist, vibration and

shock ............................................................................................................. 54

9 Tests ............................................................................................................................. 54

9.1 Kinds of tests ........................................................................................................ 54

9.1.1 General ......................................................................................................... 54

9.1.2 Type tests ...................................................................................................... 54

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– 4 – IEC 60947-5-2:2019 © IEC 2019

9.1.3 Routine tests ................................................................................................. 54

9.1.4 Sampling tests ............................................................................................... 54

9.1.5 Special tests .................................................................................................. 54

9.2 Compliance with constructional requirements ........................................................ 55

9.2.1 General ......................................................................................................... 55

9.2.2 Materials ....................................................................................................... 55

9.3 Performances ....................................................................................................... 55

9.3.1 Test sequences ............................................................................................. 55

9.3.2 General test conditions .................................................................................. 56

9.3.3 Performance under no load, normal load and abnormal load condition ........... 58

9.3.4 Performance under short-circuit current conditions ........................................ 64

9.4 Testing of operating distances .............................................................................. 65

9.4.1 Inductive, capacitive, non-mechanical magnetic and ultrasonic proximity

switches ........................................................................................................ 65

9.4.2 Photoelectric proximity switches .................................................................... 66

9.5 Testing for the frequency of operating cycles ........................................................ 69

9.5.1 General ......................................................................................................... 69

9.5.2 Method for measuring the frequency of operating cycles ................................ 70

9.5.3 Results to be obtained ................................................................................... 72

9.5.4 Photoelectric proximity switches .................................................................... 72

9.6 Verification of the electromagnetic compatibility .................................................... 74

9.6.1 General ......................................................................................................... 74

9.6.2 Immunity ........................................................................................................ 74

9.6.3 Emission ........................................................................................................ 75

9.7 Test results and test report ................................................................................... 75

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

switches................................................................................................................................ 76

A.1 MODEL IA, IB – INDUCTIVE CYLINDRICAL PROXIMITY SWITCHES WITH
THREADED BARREL (IA) OR SMOOTH BARREL (IB) WITH CABLE OR

CONNECTOR ....................................................................................................... 76

A.1.1 (IA, IB) Dimensions ....................................................................................... 76

A.1.2 (IA, IB) Rated operating distances ................................................................ 79

A.1.3 (IA, IB) Installation (mounting) threaded barrel (IA) and smooth barrel

(IB) ................................................................................................................ 80

A.1.4 (IA, IB) Frequency of operating cycles (f) ....................................................... 80

A.2 MODEL IC – INDUCTIVE RECTANGULAR PROXIMITY SWITCHES WITH

SQUARE CROSS-SECTION ................................................................................. 81

A.2.1 (IC) Dimensions ............................................................................................. 81

A.2.2 (IC) Rated operating distance ....................................................................... 83

A.2.3 (IC) Installation (mounting) ............................................................................ 84

A.2.4 (IC) Frequency of operating cycles (f) ............................................................ 85

A.3 MODEL ID – INDUCTIVE RECTANGULAR PROXIMITY SWITCHES WITH

RECTANGULAR CROSS-SECTION ...................................................................... 86

A.3.1 (ID) Dimensions ............................................................................................ 86

A.3.2 (ID) Installation (mounting) ............................................................................ 87

A.3.3 (IC) Frequency of operating cycles (f) ............................................................ 88

A.4 MODEL IX (IN, IS, FLATPACK, CUBICAL INDUCTIVE RECTANGULAR AND

CUBICAL PROXIMITY SWITCHES WITH SMALL SIZES) ..................................... 88

---------------------- Page: 6 ----------------------
IEC 60947-5-2:2019 © IEC 2019 – 5 –

A.4.1 (IX) Dimensions ............................................................................................. 88

A.4.2 (Flatpack) Dimensions ................................................................................... 89

A.4.3 (Cubical) Dimensions ..................................................................................... 90

A.4.4 (IX) Rated operating distance ........................................................................ 92

A.4.5 (IX) Installation (mounting) ............................................................................ 92

A.4.6 (IX) Frequency of operating cycles (f) ............................................................ 92

A.5 MODEL CA – CAPACITIVE CYLINDRICAL PROXIMITY SWITCHES WITH

THREADED BARREL ............................................................................................ 93

A.5.1 (CA) Dimensions ........................................................................................... 93

A.5.2 (CA) Rated operating distance (s ) ................................................................ 94

A.5.3 (CA) Installation (mounting) ........................................................................... 94

A.5.4 (CA) Frequency of operating cycles (f) ........................................................... 95

A.6 MODEL CB – CAPACITIVE PROXIMITY SWITCHES WITH SMOOTH

BARREL ............................................................................................................... 95

A.7 MODEL CC – CAPACITIVE RECTANGULAR PROXIMITY SWITCHES WITH

SQUARE CROSS-SECTION ................................................................................. 95

A.7.1 (CC) Dimensions ........................................................................................... 95

A.7.2 (CC) Rated operating distances (s ) ............................................................. 96

A.7.3 (CC) Installation (mounting) .......................................................................... 97

A.7.4 (CC) Frequency of operating cycles (f) .......................................................... 97

A.8 MODEL CD – CAPACITIVE RECTANGULAR PROXIMITY SWITCHES WITH

RECTANGULAR CROSS-SECTION ...................................................................... 98

A.8.1 (CD) Dimensions ........................................................................................... 98

A.8.2 (CD) Rated operating distance (s ) ............................................................... 98

A.8.3 (CD) Installation (mounting) ........................................................................... 98

A.8.4 (CD) Frequency of operating cycles (f) .......................................................... 99

A.9 MODEL CX – CAPACITIVE PROXIMITY SWITCHES WITH OTHER FORMS,

DIMENSIONS AND SMALL SIZES ........................................................................ 99

A.10 MODEL UA – THREADED BARREL ULTRASONIC CYLINDRICAL

PROXIMITY SWITCHES ....................................................................................... 99

A.10.1 (UA) Dimensions ........................................................................................... 99

A.10.2 (UA) Sensing range .................................................................................... 100

A.10.3 (UA) Installation (mounting) ........................................................................ 100

A.10.4 (UA) Frequency of operating cycles (f) ........................................................ 100

A.11 MODEL UD – ULTRASONIC RECTANGULAR PROXIMITY SWITCHES

WITH RECTANGULAR CROSS-SECTION .......................................................... 101

A.11.1 (UD) Dimensions ......................................................................................... 101

A.11.2 (UD) Sensing range .................................................................................... 101

A.11.3 (UD) Installation (mounting) ........................................................................ 101

A.11.4 (UD) Frequency of operating cycles (f) ........................................................ 101

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

Requirements and tests ...................................................................................................... 102

B.1 General ............................................................................................................... 102

B.2 Terms and definitions .......................................................................................... 102

B.6 Marking ............................................................................................................... 102

B.8 Constructional and functional requirements ......................................................... 103

B.9 Tests .................................................................................................................. 103

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

connected cables ................................................................................................................ 106

C.1 General ............................................................................................................... 106

---------------------- Page: 7 ----------------------
– 6 – IEC 60947-5-2:2019 © IEC 2019

C.2 Terms and definitions .......................................................................................... 106

C.8 Constructional and performance requirements .................................................... 106

C.9 Tests .................................................................................................................. 107

Annex D (normative) Integral connectors for plug-in proximity switches ............................. 111

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

strong magnetic fields ......................................................................................................... 119

E.1 Preamble ............................................................................................................ 119

E.3 Terms and definitions .......................................................................................... 119

E.4 Classification ...................................................................................................... 119

E.8 Construction and performance requirements ....................................................... 120

E.9 Tests .................................................................................................................. 121

Annex F (informative) Symbols for proximity switches ........................................................ 124

F.1 General ............................................................................................................... 124

F.2 Standard symbols for proximity switches ............................................................. 124

F.3 Additional symbols for photoelectric proximity switches ....................................... 126

F.3.1 Sensor principles ......................................................................................... 126

F.3.2 Optical actuation means ............................................................................

...

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