IEC 61918:2010
(Main)Industrial communication networks - Installation of communication networks in industrial premises
Industrial communication networks - Installation of communication networks in industrial premises
IEC 61918:2010 specifies basic requirements for the installation of media for communication networks in industrial premises and within and between the automation islands, of industrial sites. It covers balanced and optical fibre cabling and the cabling infrastructure for wireless media, but not the wireless media itself. Additional media are covered in the IEC 61784-5 series. It also covers:
- the installation of generic telecommunication cabling for industrial premises as specified in ISO/IEC 24702;
- the connection between the generic telecommunications cabling specified in ISO/IEC 24702
- and the specific communication cabling of an automation island, where an automation outlet (AO) replaces the telecommunication outlet (TO) of ISO/IEC 24702.
This second edition cancels and replaces the first edition published in 2007 and Corrigendum 1 (2009). It constitutes a technical revision. This edition includes the following technical changes with respect to the previous edition:
- 4.4.7.2.1 is updated;
- 4.4.7.3.4 is updated;
- 5.7.4.3 is updated as result of the revision of the installation profiles;
- 6.2.3.1 is updated;
- Figure 2, Figure 15, Table 14 and Table B.3 are updated;
- a new Figure 35 is added;
- a new Table 10 is added;
- Annex D is extended to cover additional communication profile families;
- Annex F is extended to cover conductor sizes in electrical cables;
- Annex H is made normative;
- some common requirements are extended as result of the revision of the installation profiles. This bilingual version (2012-05) corresponds to the monolingual English version, published in 2010-07.
This publication is to be read in conjunction with the IEC 61784-5 series and ISO/IEC 14763-2:2012.
Réseaux de communication industriels - Installation de réseaux de communication dans des locaux industriels
La CEI 61918:2010 spécifie les exigences de base pour l'installation d'un support de réseaux de communication dans des locaux industriels et à l'intérieur et entre des îlots d'automatisation de sites industriels. La présente norme couvre le câblage symétrique et à fibres optiques. Elle couvre également l'infrastructure de câblage des supports sans fil, mais pas le support sans fil lui-même. D'autres supports sont couverts par la série CEI 61784-5. Elle couvre aussi:
- l'installation de câblage de télécommunication générique pour les locaux industriels (voir ISO/CEI 24702);
- et la connexion entre le câblage de télécommunication générique spécifié dans l'ISO/CEI 24702;
- et le câblage de communication spécifique d'un îlot d'automatisation, dans laquelle une prise d'automatisation (AO) remplace la prise de télécommunication (TO) de l'ISO/CEI 24702. Cette deuxième édition annule et remplace la première édition publiée en 2007 et le Corrigendum 1 et constitue une révision technique. Elle inclut les modifications techniques suivantes par rapport à l'édition précédente:
- 4.4.7.2.1 mis à jour;
- 4.4.7.3.4 mis à jour;
- 5.7.4.3 mis à jour suite à la révision des profils d'installation;
- 6.2.3.1 mis à jour;
- Figure 2, Figure 15, Tableau 14 et Tableau B.3 mis à jour;
- une nouvelle Figure 35 a été ajoutée;
- un nouveau Tableau 10 a été ajouté;
- l'Annexe D a été étendue pour couvrir des familles de profil de communication supplémentaires;
- l'Annexe F a été étendue pour couvrir les tailles de conducteur dans les câbles électriques;
- l'Annexe H est devenue normative. Certaines exigences communes sont étendues suite à la révision des profils d'installation. La présente version bilingue (2012-05) correspond à la version anglaise monolingue publiée en 2010-07.
Cette publication doit être lue conjointement avec la série CEI 61784-5 et l' ISO/IEC 14763-2:2012
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IEC 61918
®
Edition 2.0 2010-07
INTERNATIONAL
STANDARD
colour
inside
Industrial communication networks –
Installation of communication networks in industrial premises
IEC 61918:2010(E)
---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
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International Standards for all electrical, electronic and related technologies.
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IEC 61918
®
Edition 2.0 2010-07
INTERNATIONAL
STANDARD
colour
inside
Industrial communication networks –
Installation of communication networks in industrial premises
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XH
ICS 25.040.40, 33.180, 35.110 ISBN 978-2-88912-052-9
® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 3 ----------------------
– 2 – 61918 © IEC:2010(E)
CONTENTS
FOREWORD.9
INTRODUCTION.11
1 Scope.14
2 Normative references .14
3 Terms, definitions, and abbreviated terms .17
3.1 Terms and definitions .17
3.2 Abbreviated terms .25
3.3 Conventions for installation profiles .27
4 Installation planning .27
4.1 Introduction .27
4.1.1 Objective .27
4.1.2 Cabling in industrial premises.27
4.1.3 The planning process .30
4.1.4 Specific requirements for CPs .31
4.1.5 Specific requirements for generic cabling in accordance with
ISO/IEC 24702 .31
4.2 Planning requirements.31
4.2.1 Safety.31
4.2.2 Security.31
4.2.3 Environmental considerations and EMC.32
4.2.4 Specific requirements for generic cabling in accordance with
ISO/IEC 24702 .33
4.3 Network capabilities .33
4.3.1 Network topology.33
4.3.2 Network characteristics .35
4.4 Selection and use of cabling components .38
4.4.1 Cable selection.38
4.4.2 Connecting hardware selection.42
4.4.3 Connections within a channel/permanent link .45
4.4.4 Terminators .50
4.4.5 Device location and connection .51
4.4.6 Coding and labelling .51
4.4.7 Earthing and bonding of equipment and devices and shielded cabling .51
4.4.8 Storage and transportation of cables .60
4.4.9 Routing of cables.60
4.4.10 Separation of circuits.62
4.4.11 Mechanical protection of cabling components .63
4.4.12 Installation in special areas .63
4.5 Cabling planning documentation.63
4.5.1 Common description.63
4.5.2 Cabling planning documentation for CPs .63
4.5.3 Network certification documentation .64
4.5.4 Cabling planning documentation for generic cabling in accordance
with ISO/IEC 24702 .64
4.6 Verification of cabling planning specification .64
5 Installation implementation .64
5.1 General requirements.64
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61918 © IEC:2010(E) – 3 –
5.1.1 Common description.64
5.1.2 Installation of CPs .65
5.1.3 Installation of generic cabling in industrial premises .65
5.2 Cable installation.65
5.2.1 General requirements for all cabling types.65
5.2.2 Installation and routing .71
5.2.3 Specific requirements for CPs .73
5.2.4 Specific requirements for wireless installation.73
5.2.5 Specific requirements for generic cabling in accordance with
ISO/IEC 24702 .73
5.3 Connector installation.73
5.3.1 Common description.73
5.3.2 Shielded connectors .74
5.3.3 Unshielded connectors .74
5.3.4 Specific requirements for CPs .74
5.3.5 Specific requirements for wireless installation.74
5.3.6 Specific requirements for generic cabling in accordance with
ISO/IEC 24702 .74
5.4 Terminator installation.74
5.4.1 Common description.74
5.4.2 Specific requirements for CPs .75
5.5 Device installation .75
5.5.1 Common description.75
5.5.2 Specific requirements for CPs .75
5.6 Coding and labelling.75
5.6.1 Common description.75
5.6.2 Specific requirements for CPs .75
5.7 Earthing and bonding of equipment and devices and shield cabling.75
5.7.1 Common description.75
5.7.2 Bonding and earthing of enclosures and pathways .76
5.7.3 Earthing methods .77
5.7.4 Shield earthing methods .78
5.7.5 Specific requirements for CPs .81
5.7.6 Specific requirements for generic cabling in accordance with
ISO/IEC 24702 .81
5.8 As-implemented cabling documentation.81
6 Installation verification and installation acceptance test.81
6.1 Introduction .81
6.2 Installation verification.82
6.2.1 General .82
6.2.2 Verification according to cabling planning documentation .82
6.2.3 Verification of earthing and bonding .84
6.2.4 Verification of shield earthing .85
6.2.5 Verification of cabling system .85
6.2.6 Cable selection verification.85
6.2.7 Connector verification.86
6.2.8 Connection verification .86
6.2.9 Terminators verification .87
6.2.10 Coding and labelling verification .88
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– 4 – 61918 © IEC:2010(E)
6.2.11 Verification report .88
6.3 Installation acceptance test .88
6.3.1 General .88
6.3.2 Acceptance test of Ethernet based cabling .90
6.3.3 Acceptance test of non Ethernet based cabling .92
6.3.4 Specific requirements for wireless installation.93
6.3.5 Acceptance test report.93
7 Installation administration.93
7.1 General .93
7.2 Fields covered by the administration .94
7.3 Basic principles for the administration system .94
7.4 Working procedures .94
7.5 Device location labelling.95
7.6 Component cabling labelling.95
7.7 Documentation .96
7.8 Specific requirements for administration .96
8 Installation maintenance and installation troubleshooting .96
8.1 General .96
8.2 Maintenance.97
8.2.1 Scheduled maintenance .97
8.2.2 Condition-based maintenance .98
8.2.3 Corrective maintenance.99
8.3 Troubleshooting .99
8.3.1 General description .99
8.3.2 Evaluation of the problem .99
8.3.3 Typical problems .100
8.3.4 Troubleshooting procedure .102
8.3.5 Simplified troubleshooting procedure .103
8.4 Specific requirements for maintenance and troubleshooting . 104
Annex A (informative) Introduction to generic cabling for industrial premises . 105
Annex B (informative) MICE description methodology .106
Annex C (informative) Network topologies.114
Annex D (informative) Connector table.116
Annex E (informative) Power networks with respect to electromagnetic interference –
TN-C and TN-S approaches.129
Annex F (informative) Conductor sizes in electrical cables. 131
Annex G (informative) Installed cabling verification checklists. 133
Annex H (normative) Cord sets .137
Annex I (informative) Guidance for terminating cable ends . 142
Annex J (informative) Recommendations for bulkhead connection performance and
channel performance with more than 4 connections in the channel .149
Annex K (informative) Fieldbus data transfer testing .151
Annex L (informative) Communication network installation work responsibility . 155
Annex M (informative) Trade names of communication profiles . 156
Annex N (informative) Validation measurements . 158
Bibliography.164
---------------------- Page: 6 ----------------------
61918 © IEC:2010(E) – 5 –
Figure 1 – Industrial network installation life cycle .12
Figure 2 – Standards relationships.13
Figure 3 – Structure of generic cabling connected to an automation island .28
Figure 4 – Automation island cabling attached to elements of generic cabling.28
Figure 5 – Automation islands.29
Figure 6 – Automation island network external connections .29
Figure 7 – How to meet environmental conditions. .33
Figure 8 – How enhancement, isolation and separation work together .33
Figure 9 – Basic physical topologies for passive networks .34
Figure 10 – Basic physical topologies for active networks .34
Figure 11 – Example of combination of basic topologies .35
Figure 12 – Basic reference implementation model .46
Figure 13 – Enhanced reference implementation model .47
Figure 14 – Selection of the earthing and bonding systems.54
Figure 15 – Wiring for bonding and earthing in a mesh equipotential configuration .56
Figure 16 – Wiring of the earths in a star earth configuration .57
Figure 17 – Schematic diagram of a field device with direct earthing.58
Figure 18 – Schematic diagram of a field device with parallel RC circuit earthing.58
Figure 19 – Insert edge protector .67
Figure 20 – Use an uncoiling device and avoid forming loop .67
Figure 21 – Avoid torsion .67
Figure 22 – Maintain minimum bending radius .68
Figure 23 – Do not pull by the individual wires .69
Figure 24 – Use cable clamps with a large (wide) surface.69
Figure 25 – Cable gland with bending protection.70
Figure 26 – Spiral tube .70
Figure 27 – Separate cable pathways .73
Figure 28 – Use of flexible bonding straps at movable metallic pathways.76
Figure 29 – Surface preparation for electromechanical earth and bonding connections.77
Figure 30 – Example of isolated bus bar .78
Figure 31 – Example of isolator for mounting DIN rails.78
Figure 32 – Parallel RC shield earthing.79
Figure 33 – Direct shield earthing .79
Figure 34 – Examples for shielding application .80
Figure 35 – Voltage offset mitigation.80
Figure 36 – First example of derivatives of shield earthing.80
Figure 37 – Second example of derivatives of shield earthing .81
Figure 38 – Installation verification process .83
Figure 39 – Test of earthing connections .84
Figure 40 – Pin and pair grouping assignments for two eight position IEC 60603-7
subparts and four position IEC 60603 series to IEC 61076-2-101 connectors.87
Figure 41 – Two pair 8-way modular connector .87
Figure 42 – Transposed pairs, split pairs and reversed pair .87
---------------------- Page: 7 ----------------------
– 6 – 61918 © IEC:2010(E)
Figure 43 – Validation process.89
Figure 44 – Schematic representation of the channel.90
Figure 45 – Schematic representation of the permanent link .90
Figure 46 – Communication network maintenance .98
Figure 47 – Troubleshooting procedure.103
Figure 48 – Fault detection without special tools.104
Figure B.1 – MICE classifications.106
Figure B.2 – Example MICE classifications within a facility . 107
Figure B.3 – Enhancement, isolation and separation. 107
Figure B.4 – Example 1 of mitigation.108
Figure B.5 – Example 2 of mitigation.109
Figure B.6 – Frequency range of electromagnetic disturbance from common industrial
devices .109
Figure B.7 – Example of a general guidance for separation versus EFT value .111
Figure E.1 – Four-wire power network (TN-C) .129
Figure E.2 – Five wire power network (TN-S).130
Figure H.1 – Straight through cord sets with M12-4 D-coding connectors.137
Figure H.2 – Straight through cord sets with 8-way modular connectors, 8 poles . 138
Figure H.3 – Straight through cord sets with 8-way modular connectors, 4 poles . 139
Figure I.1 – Stripping the cable jacket.142
Figure I.2 – Example of wire preparation for type A cables. 143
Figure I.3 – 8-way modular plug.143
Figure I.4 – Inserting the cable into the connector body .144
Figure I.5 – Crimping the connector .144
Figure I.6 – Example of a cable preparation for type A wiring. 145
Figure I.7 – Connector components .146
Figure I.8 – Cable preparation .146
Figure I.9 – Connector wire gland, nut and shell on the cable .146
Figure I.10 – Conductors preparation.146
Figure I.11 – Jacket removal.147
Figure I.12 – Shield preparation.147
Figure I.13 – Conductors preparation.147
Figure I.14 – Installing conductors in connector .147
Figure I.15 – Assembling the body of the connector.148
Figure I.16 – Final assembling .148
Figure N.1 – Loop resistance measurement wire to wire .159
Figure N.2 – Loop resistance measurement wire 1 to shield. 159
Figure N.3 – Loop resistance measurement wire 2 to shield. 159
Figure N.4 – Resistance measurement for detecting wire shorts . 159
Figure N.5 – Resistance measurement between wire 1 and wire 2 .160
Figure N.6 – Validation of the cable DCR.161
Figure N.7 – Conclusions for cable open or shorts .162
Figure N.8 – Determination of proper cable terminator value. 163
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61918 © IEC:2010(E) – 7 –
Table 1 – Basic network characteristics for balanced cabling not based on Ethernet.36
Table 2 – Network characteristics for balanced cabling based on Ethernet .36
Table 3 – Network characteristics for optical fibre cabling.37
Table 4 – Information relevant to copper cable: fixed cables .39
Table 5 – Information relevant to copper cable: cords .40
Table 6 – Information relevant to optical fibre cables .41
Table 7 – Connectors for balanced cabling CPs based on Ethernet .43
Table 8 – Connectors for copper cabling CPs not based on Ethernet .44
Table 9 – Optical fib
...
IEC 61918
®
Edition 2.0 2010-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Industrial communication networks – Installation of communication networks
in industrial premises
Réseaux de communication industriels – Installation de réseaux de
communication dans des locaux industriels
IEC 61918:2010
---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
Copyright © 2010 IEC, Geneva, Switzerland
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
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International Standards for all electrical, electronic and related technologies.
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IEC 61918
®
Edition 2.0 2010-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Industrial communication networks – Installation of communication networks
in industrial premises
Réseaux de communication industriels – Installation de réseaux de
communication dans des locaux industriels
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XH
ICS 25.040.40, 33.180, 35.110 ISBN 978-2-88912-941-6
Warning! Make sure that you obtained this publication from an authorized distributor.
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® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – 61918 IEC:2010
CONTENTS
FOREWORD . 9
INTRODUCTION . 11
1 Scope . 14
2 Normative references . 14
3 Terms, definitions, and abbreviated terms . 17
3.1 Terms and definitions . 17
3.2 Abbreviated terms . 25
3.3 Conventions for installation profiles . 27
4 Installation planning . 27
4.1 Introduction . 27
4.1.1 Objective . 27
4.1.2 Cabling in industrial premises . 27
4.1.3 The planning process . 30
4.1.4 Specific requirements for CPs . 31
4.1.5 Specific requirements for generic cabling in accordance with
ISO/IEC 24702 . 31
4.2 Planning requirements . 31
4.2.1 Safety . 31
4.2.2 Security . 31
4.2.3 Environmental considerations and EMC . 32
4.2.4 Specific requirements for generic cabling in accordance with
ISO/IEC 24702 . 33
4.3 Network capabilities . 33
4.3.1 Network topology . 33
4.3.2 Network characteristics . 35
4.4 Selection and use of cabling components . 38
4.4.1 Cable selection . 38
4.4.2 Connecting hardware selection . 42
4.4.3 Connections within a channel/permanent link . 44
4.4.4 Terminators . 49
4.4.5 Device location and connection . 50
4.4.6 Coding and labelling . 50
4.4.7 Earthing and bonding of equipment and devices and shielded cabling . 50
4.4.8 Storage and transportation of cables . 59
4.4.9 Routing of cables . 59
4.4.10 Separation of circuits . 61
4.4.11 Mechanical protection of cabling components . 62
4.4.12 Installation in special areas . 62
4.5 Cabling planning documentation . 62
4.5.1 Common description . 62
4.5.2 Cabling planning documentation for CPs . 62
4.5.3 Network certification documentation . 63
4.5.4 Cabling planning documentation for generic cabling in accordance
with ISO/IEC 24702 . 63
4.6 Verification of cabling planning specification . 63
5 Installation implementation . 63
5.1 General requirements . 63
---------------------- Page: 4 ----------------------
61918 IEC:2010 – 3 –
5.1.1 Common description . 63
5.1.2 Installation of CPs . 64
5.1.3 Installation of generic cabling in industrial premises . 64
5.2 Cable installation . 64
5.2.1 General requirements for all cabling types . 64
5.2.2 Installation and routing . 70
5.2.3 Specific requirements for CPs . 72
5.2.4 Specific requirements for wireless installation . 72
5.2.5 Specific requirements for generic cabling in accordance with
ISO/IEC 24702 . 72
5.3 Connector installation . 72
5.3.1 Common description . 72
5.3.2 Shielded connectors . 73
5.3.3 Unshielded connectors . 73
5.3.4 Specific requirements for CPs . 73
5.3.5 Specific requirements for wireless installation . 73
5.3.6 Specific requirements for generic cabling in accordance with
ISO/IEC 24702 . 73
5.4 Terminator installation . 73
5.4.1 Common description . 73
5.4.2 Specific requirements for CPs . 74
5.5 Device installation . 74
5.5.1 Common description . 74
5.5.2 Specific requirements for CPs . 74
5.6 Coding and labelling . 74
5.6.1 Common description . 74
5.6.2 Specific requirements for CPs . 74
5.7 Earthing and bonding of equipment and devices and shield cabling . 74
5.7.1 Common description . 74
5.7.2 Bonding and earthing of enclosures and pathways . 75
5.7.3 Earthing methods . 76
5.7.4 Shield earthing methods . 77
5.7.5 Specific requirements for CPs . 80
5.7.6 Specific requirements for generic cabling in accordance with
ISO/IEC 24702 . 80
5.8 As-implemented cabling documentation . 80
6 Installation verification and installation acceptance test . 80
6.1 Introduction . 80
6.2 Installation verification . 81
6.2.1 General . 81
6.2.2 Verification according to cabling planning documentation . 81
6.2.3 Verification of earthing and bonding . 83
6.2.4 Verification of shield earthing . 84
6.2.5 Verification of cabling system . 84
6.2.6 Cable selection verification . 84
6.2.7 Connector verification . 85
6.2.8 Connection verification . 85
6.2.9 Terminators verification . 86
6.2.10 Coding and labelling verification . 87
---------------------- Page: 5 ----------------------
– 4 – 61918 IEC:2010
6.2.11 Verification report . 87
6.3 Installation acceptance test . 87
6.3.1 General . 87
6.3.2 Acceptance test of Ethernet based cabling . 89
6.3.3 Acceptance test of non Ethernet based cabling . 91
6.3.4 Specific requirements for wireless installation . 92
6.3.5 Acceptance test report . 92
7 Installation administration . 92
7.1 General . 92
7.2 Fields covered by the administration . 93
7.3 Basic principles for the administration system . 93
7.4 Working procedures . 93
7.5 Device location labelling . 94
7.6 Component cabling labelling . 94
7.7 Documentation . 95
7.8 Specific requirements for administration . 95
8 Installation maintenance and installation troubleshooting . 95
8.1 General . 95
8.2 Maintenance . 96
8.2.1 Scheduled maintenance . 96
8.2.2 Condition based maintenance . 97
8.2.3 Corrective maintenance . 98
8.3 Troubleshooting . 98
8.3.1 General description . 98
8.3.2 Evaluation of the problem . 98
8.3.3 Typical problems . 99
8.3.4 Troubleshooting procedure . 101
8.3.5 Simplified troubleshooting procedure . 102
8.4 Specific requirements for maintenance and troubleshooting . 103
Annex A (informative) Introduction to generic cabling for industrial premises . 104
Annex B (informative) MICE description methodology . 105
Annex C (informative) Network topologies. 113
Annex D (informative) Connector table. 115
Annex E (informative) Power networks with respect to electromagnetic interference –
TN-C and TN-S approaches . 128
Annex F (informative) Conductor sizes in electrical cables . 130
Annex G (informative) Installed cabling verification checklists . 132
Annex H (normative) Cord sets . 136
Annex I (informative) Guidance for terminating cable ends . 141
Annex J (informative) Recommendations for bulkhead connection performance and
channel performance with more than 4 connections in the channel . 148
Annex K (informative) Fieldbus data transfer testing . 150
Annex L (informative) Communication network installation work responsibility . 154
Annex M (informative) Trade names of communication profiles . 155
Annex N (informative) Validation measurements . 157
Bibliography . 163
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61918 IEC:2010 – 5 –
Figure 1 – Industrial network installation life cycle . 12
Figure 2 – Standards relationships . 13
Figure 3 – Structure of generic cabling connected to an automation island . 28
Figure 4 – Automation island cabling attached to elements of generic cabling. 28
Figure 5 – Automation islands . 29
Figure 6 – Automation island network external connections . 29
Figure 7 – How to meet environmental conditions. . 33
Figure 8 – How enhancement, isolation and separation work together . 33
Figure 9 – Basic physical topologies for passive networks . 34
Figure 10 – Basic physical topologies for active networks . 34
Figure 11 – Example of combination of basic topologies . 35
Figure 12 – Basic reference implementation model . 45
Figure 13 – Enhanced reference implementation model . 46
Figure 14 – Selection of the earthing and bonding systems . 53
Figure 15 – Wiring for bonding and earthing in a mesh equipotential configuration . 55
Figure 16 – Wiring of the earths in a star earth configuration . 56
Figure 17 – Schematic diagram of a field device with direct earthing . 57
Figure 18 – Schematic diagram of a field device with parallel RC circuit earthing . 57
Figure 19 – Insert edge protector . 66
Figure 20 – Use an uncoiling device and avoid forming loop . 66
Figure 21 – Avoid torsion . 66
Figure 22 – Maintain minimum bending radius . 67
Figure 23 – Do not pull by the individual wires . 68
Figure 24 – Use cable clamps with a large (wide) surface . 68
Figure 25 – Cable gland with bending protection . 69
Figure 26 – Spiral tube . 69
Figure 27 – Separate cable pathways . 72
Figure 28 – Use of flexible bonding straps at movable metallic pathways . 75
Figure 29 – Surface preparation for electromechanical earth and bonding connections . 76
Figure 30 – Example of isolated bus bar . 77
Figure 31 – Example of isolator for mounting DIN rails . 77
Figure 32 – Parallel RC shield earthing . 78
Figure 33 – Direct shield earthing . 78
Figure 34 – Examples for shielding application . 79
Figure 35 – Voltage offset mitigation . 79
Figure 36 – First example of derivatives of shield earthing . 79
Figure 37 – Second example of derivatives of shield earthing . 80
Figure 38 – Installation verification process . 82
Figure 39 – Test of earthing connections . 83
Figure 40 – Pin and pair grouping assignments for two eight position IEC 60603-7
subparts and four position IEC 60603 series to IEC 61076-2-101 connectors . 86
Figure 41 – Two pair 8-way modular connector . 86
Figure 42 – Transposed pairs, split pairs and reversed pair . 86
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– 6 – 61918 IEC:2010
Figure 43 – Validation process . 88
Figure 44 – Schematic representation of the channel . 89
Figure 45 – Schematic representation of the permanent link . 89
Figure 46 – Communication network maintenance . 97
Figure 47 – Troubleshooting procedure . 102
Figure 48 – Fault detection without special tools . 103
Figure B.1 – MICE classifications . 105
Figure B.2 – Example MICE classifications within a facility . 106
Figure B.3 – Enhancement, isolation and separation . 106
Figure B.4 – Example 1 of mitigation. 107
Figure B.5 – Example 2 of mitigation. 108
Figure B.6 – Frequency range of electromagnetic disturbance from common industrial
devices . 108
Figure B.7 – Example of a general guidance for separation versus EFT value . 110
Figure E.1 – Four-wire power network (TN-C) . 128
Figure E.2 – Five wire power network (TN-S) . 129
Figure H.1 – Straight through cord sets with M12-4 D-coding connectors . 136
Figure H.2 – Straight through cord sets with 8-way modular connectors, 8 poles . 137
Figure H.3 – Straight through cord sets with 8-way modular connectors, 4 poles . 138
Figure I.1 – Stripping the cable jacket . 141
Figure I.2 – Example of wire preparation for type A cables . 142
Figure I.3 – 8-way modular plug . 142
Figure I.4 – Inserting the cable into the connector body . 143
Figure I.5 – Crimping the connector . 143
Figure I.6 – Example of a cable preparation for type A wiring . 144
Figure I.7 – Connector components .
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