Safety of machinery - Electrical equipment of machines - Part 1: General requirements

³⁾ EN 60664-1 includes A1:2000 + A2:2002 to IEC 60664-1 (mod).

control systems

Part 1: General principles for design

Annex ZZ
(informative)

Coverage of Essential Requirements of EC Directives

This European Standard has been prepared under a mandate given to CENELEC by the European Commission and the European Free Trade Association and within its scope the standard covers only the following essential requirements out of those given in annex I of the EC Directive 2006/42/EC:

• 1.2.1

• 1.2.2

• 1.2.3

• 1.2.4.1

• 1.2.4.3

• 1.2.4.4

• 1.2.6

• 1.5.1

• 1.5.4

• 1.6.3 (for isolation of electrical supplies of machinery)

• 1.6.4 (for access to electrical equipment)

• 1.7.0

• 1.7.1

• 1.7.1.1

• 1.7.1.2

• 1.7.2 (for residual risks of an electrical nature)

• 1.7.4.2(e)

Compliance with this standard provides one means of conformity with the specified essential requirements of the Directive concerned.

WARNING: Other requirements and other EC Directives may be applicable to the products falling within the scope of this standard.E

EN 60204-1/А 1

February 2009

NORME EUROPEENNE EUROPAISCHE NORM

ICS 29.020

English version

Safety of machinery -
Electrical equipment of machines -
Part 1: General requirements
(IEC 60204-1:2005/A1:2008)

Securite des machines -

Equipement electrique des machines - Partie 1: Regies generates (CEI 60204-1:2005/A1:2008)

Sicherheit von Maschinen -

Elektrische AusrQstung von Maschinen

Teil 1: Allgemeine Anforderungen (IEC 60204-1:2005/A1:2008)

This amendment A1 modifies the European Standard EN 60204-1:2006; it was approved by CENELEC on 2009-02-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this amendment the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member.

This amendment exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.

CENELEC

European Committee for Electrotechnical Standardization
Comite Europeen de Normalisation Electrotechnique
Europaisches Komitee fur Elektrotechnische Normung

Central Secretariat: avenue Marnix 17, В -1000 Brussels

© 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Foreword

The text of document 44/575/CDV, future amendment 1 to IEC 60204-1:2005, prepared by IECTC44, Safety of machinery - Electrotechnical aspects, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as amendment A1 to EN 60204-1:2006 on 2009-02-01.

The following dates were fixed:

• latest date by which the amendment has to be implemented at national level by publication of

an identical national standard or by endorsement (dop) 2009-11-01

• latest date by which the national standards conflicting

with the amendment have to be withdrawn (dow) 2012-02-01

Annex ZA has been added by CENELEC.

Endorsement notice

The text of amendment 1:2008 to the International Standard IEC 60204-1:2005 was approved by CENELEC as an amendment to the European Standard without any modification.Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications

Replace IEC 60364-4-41:2001, ISO 13849-1:1999 and ISO 13850:1996 by the following references:

Emergency stop - Principles for designI

IEC 60204-1

Edition 5.1 2009-02

■■■в®.

INTERNATIONAL STANDARD

NORME

INTERNATIONALE

Safety of machinery - Electrical equipment of machines -

Part 1: General requirements

Securite des machines - Equipement electrique des machines -

Partie 1: Regies generates

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I EC

INTERNATIONAL STANDARD

NORME

INTERNATIONALE

Edition 5.1 2009-02

Safety of machinery - Electrical equipment of machines -

Part 1: General requirements

Securite des machines - Equipement electrique des machines -

Partie 1: Regies generales

INTERNATIONAL

* ELECTROTECHNICAL COMMISSION

COMMISSION ELECTROTECHNIQUE INTERNATIONALE

PRICE CODE

code prix vzVat

ICS 29.020

ISBN 2-8318-1024-3

ІЕС 60204-1

® Registered trademark of the International Electrotechnical Commission Marque deposee de la Commission Electrotechnique Internationale

CONTENTS

FOREWORD 6

INTRODUCTION 9

1. Scope 11

2. Normative references 12

3. Definitions 14

4. General requirements 21

   1. General considerations 21

   2. Selection of equipment 22

   3. Electrical supply 23

   4. Physical environment and operating conditions 24

   5. Transportation and storage 26

   6. Provisions for handling 26

   7. Installation 26

5. Incoming supply conductor terminations and devices for disconnecting and

switching off 26

1. 1. Incoming supply conductor terminations 26

   2. Terminal for connection to the external protective earthing system 27

   3. Supply disconnecting (isolating) device 27

   4. Devices for switching off for prevention of unexpected start-up 30

   5. Devices for disconnecting electrical equipment 30

   6. Protection against unauthorized, inadvertent and/or mistaken connection 31

2. Protection against electric shock 31

   1. General 31

   2. Protection against direct contact 31

   3. Protection against indirect contact 34

   4. Protection by the use of PELV 35

3. Protection of equipment 36

   1. General 36

   2. Overcurrent protection 36

   3. Protection of motors against overheating 39

   4. Abnormal temperature protection 40

   5. Protection against supply interruption or voltage reduction and subsequent restoration 40

   6. Motor overspeed protection 41

   7. Earth fault/residual current protection 41

   8. Phase sequence protection 41

   9. Protection against overvoltages due to lightning and to switching surges 41

4. Equipotential bonding 41

   1. General 41

   2. Protective bonding circuit 44

   3. Functional bonding 47

   4. Measures to limit the effects of high leakage current 47

5. Control circuits and control functions 47

   1. Control circuits 47

   2. Control functions 48

   3. Protective interlocks 53

   4. Control functions in the event of failure 54

6. Operator interface and machine-mounted control devices 58

   1. General 58

   2. Push-buttons 59

   3. Indicator lights and displays 61

   4. Illuminated push-buttons 62

   5. Rotary control devices 62

   6. Start devices 62

   7. Emergency stop devices 62

   8. Emergency switching off devices 63

   9. Enabling control device 64

7. Controlgear: location, mounting, and enclosures 64

   1. General requirements 64

   2. Location and mounting 64

   3. Degrees of protection 66

   4. Enclosures, doors and openings 66

   5. Access to controlgear 67

8. Conductors and cables 68

   1. General requirements 68

   2. Conductors 68

   3. Insulation 69

   4. Current-carrying capacity in normal service 69

   5. Conductor and cable voltage drop 70

   6. Flexible cables 71

   7. Conductor wires, conductor bars and slip-ring assemblies 72

9. Wiring practices 74

   1. Connections and routing 74

   2. Identification of conductors 75

   3. Wiring inside enclosures 77

   4. Wiring outside enclosures 77

   5. Ducts, connection boxes and other boxes 80

10. Electric motors and associated equipment 82

    1. General requirements 82

    2. Motor enclosures 83

    3. Motor dimensions 83

    4. Motor mounting and compartments 83

    5. Criteria for motor selection 83

    6. Protective devices for mechanical brakes 84

11. Accessories and lighting 84

    1. Accessories 84

    2. Local lighting of the machine and equipment 84

12. Marking, warning signs and reference designations 85

    1. General 85

    2. Warning signs 86

    3. Functional identification 86

    4. Marking of equipment 86

    5. Reference designations 87

13. Technical documentation 87

    1. General 87

    2. Information to be provided 87

    3. Requirements applicable to all documentation 88

    4. Installation documents 88

    5. Overview diagrams and function diagrams 89

    6. Circuit diagrams 89

    7. Operating manual 90

    8. Maintenance manual 90

    9. Parts list 90

14. Verification 90

    1. General 90

    2. Verification of conditions for protection by automatic disconnection of supply 91

    3. Insulation resistance tests 94

    4. Voltage tests 95

    5. Protection against residual voltages 95

    6. Functional tests 95

    7. Retesting 95

1. (normative) Protection against indirect contact in TN-systems 96

2. (informative) Enquiry form for the electrical equipment of machines 100

Annex C (informative) Examples of machines covered by this part of IEC 60204 104

Annex D (informative) Current-carrying capacity and overcurrent protection of conductors and cables in the electrical equipment of machines 106

Annex E (informative) Explanation of emergency operation functions 112

Annex F (informative) Guide for the use of this part of IEC 60204 113

Annex G (informative) Comparison of typical conductor cross-sectional areas 115

Bibliography 117

Index 119

1. - Block diagram of a typical machine 10

2. - Example of equipotential bonding for electrical equipment of a machine 43

3. - Method a) 57

4. - Method b) 57

Figure A.1 - Typical arrangement for fault loop impedance measurement 99