IEC 60947-5-2:2007

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
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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
...