EN 61918:2008

SLOVENSKI STANDARD
01-januar-2010
Industrijska komunikacijska omrežja - Inštalacija komunikacijskih omrežij v
industrijskih okoljih (IEC 61918:2007, spremenjen)
Industrial communication networks - Installation of communication networks in industrial
premises
Industrielle Kommunikationsnetze - Installation von Kommunikationsnetzen in
Industrieanlagen
Réseaux de communication industriels - Installation des réseaux de communication dans
les locaux industriels
Ta slovenski standard je istoveten z: EN 61918:2008
ICS:
25.040.40 Merjenje in krmiljenje Industrial process
industrijskih postopkov measurement and control
35.110 Omreževanje Networking
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 61918
NORME EUROPÉENNE
May 2008
EUROPÄISCHE NORM
ICS 35.110; 25.040.40; 33.180; 22.060

English version
Industrial communication networks -
Installation of communication networks in industrial premises
(IEC 61918:2007, modified)
Réseaux de communication industriels -  Industrielle Kommunikationsnetze -
Installation des réseaux Installation von Kommunikationsnetzen
de communication in Industrieanlagen
dans les locaux industriels (IEC 61918:2007, modifiziert)
(CEI 61918:2007, modifiée)
This European Standard was approved by CENELEC on 2008-03-01. CENELEC members are bound to comply
with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
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 European Standard exists in two official versions (English and 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
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61918:2008 E
Foreword
The text of the International Standard IEC 61918:2007, prepared by SC 65C, Industrial networks, of
IEC TC 65, Industrial-process measurement, control and automation, together with common modifications
agreed between the Technical Committees CENELEC TC 65CX, Fieldbus, and CENELEC TC 215,
Electrotechnical aspects of telecommunication equipment, was submitted to the Unique Acceptance
Procedure and was approved by CENELEC as EN 61918 on 2008-03-01.
This standard is to be used in conjunction with EN 61784-5 series with regard to the installation of
communication profiles (CPs) and with series EN 50174 with regard to the installation of generic cabling
in accordance with EN 50173-3.
IEC 61918 was developed in cooperation with ISO/IEC JTC1/SC 25 which is responsible for
ISO/IEC 24702.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
(dop) 2009-03-01
national standard or by endorsement
– latest date by which the national standards conflicting
(dow) 2011-03-01
with the EN have to be withdrawn
Annex ZA has been added by CENELEC.
__________
EENN 501 5017474-3-3
EENN 501 5017474-2-2
EENN 501 5017474-1-1
- 3 - EN 61918:2008
Endorsement notice
The text of the International Standard IEC 61918:2007 was approved by CENELEC as a European
Standard with agreed common modifications as given below.
COMMON MODIFICATIONS
Introduction
Replace the last paragraph, including Figure 2, by:
For the installation of generic cabling this standard is to be used in conjunction with series
EN 50174 (see Figure 2).
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CACABBLLIINNGG
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HOHOMMES ES EENN 5 50170173-3-44
clclauausese
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DDAATTAA CEN CENTTRESRES EENN 5 50170173-3-55
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BEBETTWWEEEENN
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AUTAUTOMOMAATTIIOONN EENN 5 50170173-3-33
clclauausese
ISISLLAANDSNDS
BEBETTWWEEEENN
EENN 61 61784784-5-5
AUTAUTOMOMAATTIIOONN
INDINDUUSTSTRIRIAALL PREM PREMISEISESS EENN 611 61158 58
seserieriess EENN  6619119188
ISISLLAANDSNDS
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andand (Co(Commmmoonn
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EENN 617 61784-84-1,1, -2 -2 ((SSeellececttiionon + +
AUTAUTOMOMAATTIIOONN
AAdd/Redd/Replpl/M/Mod)od)
ISISLLAANDSNDS
Common sCommon sttrruuccttuurree
AAPPPLPLICICAATTIONION--SPSPEECCIFIFICIC
CACABBLLIINNGG
In IEC 61918 the generic cabling is intended as ‘in accordance with ISO/IEC 24702’.
In EN 61918 the generic cabling shall be intended as ‘in accordance with EN 50173-3’.
Figure 2 - Network installation: Standards relationships at European level

Bibliography
The following notes have to be added for the standards indicated:
IEC 60079-11 NOTE  Harmonized as EN 60079-11:2007 (not modified).
IEC 60079-27 NOTE  Harmonized as EN 60079-27:2008 (not modified).
IEC 60332-1 NOTE  Harmonized in EN 60332-1 series (not modified).
IEC 60512-4 NOTE  Harmonized in EN 60512-4 series (not modified).
IEC 60664-1 NOTE  Harmonized as EN 60664-1:2007 (not modified).
IEC 60670-1 NOTE  Harmonized as EN 60670-1:2005 (modified).
IEC 60950-21 NOTE  Harmonized as EN 60950-21:2003 (not modified).
IEC 61000-4 NOTE  Harmonized in EN 61000-4 series (not modified).
IEC 61000-6-2 NOTE  Harmonized as EN 61000-6-2:2005 (not modified).
IEC 61000-6-4 NOTE  Harmonized as EN 61000-6-4:2007 (not modified).
IEC 61010-1 NOTE  Harmonized as EN 61010-1:2001 (not modified).
IEC 61131-2 NOTE  Harmonized as EN 61131-2:2003 (not modified).
EN 61131-2:2003 is superseded by EN 61131-2:2007 which is based on IEC 61131-2:2007
IEC/TR 61158-1 NOTE  Harmonized as CLC/TR 61158-1:2004 (not modified).
IEC 61326-1 NOTE  Harmonized as EN 61326-1:2006 (not modified).
IEC 61984 NOTE  Harmonized as EN 61984:2001 (not modified).
ISO/IEC 9314-3 NOTE  Harmonized as EN ISO/IEC 9314-3:1995 (not modified).
__________
- 5 - EN 61918:2008
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.

NOTE 1  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
NOTE 2  Where a standard cited below belongs to the EN 50000 series, the European Standard applies instead of the relevant
International Standard.
Publication Year Title EN/HD Year

1)
- - Connector sets and interconnect components EN 50377-6-1 -
to be used in optical fibre communication
systems - Product specifications -
Part 6-1: Type SC-RJ terminated on
IEC 60793-2 category A1a and A1b
multimode fibre
1)
- - Sectional specification: Radio frequency EN 122120 -
coaxial connectors - Series BNC

1) 2)
IEC 60079-14 - Explosive atmospheres - EN 60079-14 200X
Part 14: Electrical installations design,
selection and erection
IEC 60364-1 (mod) 2005 Low-voltage electrical installations - HD 60364-1 2008
Part 1: Fundamental principles, assessment of
general characteristics, definitions

1) 3)
IEC 60364-4-41 - Low-voltage electrical installations - HD 60364-4-41 2007
(mod) Part 4-41: Protection for safety - Protection + corr. July 2007
against electric shock
1)
IEC 60364-4-44 - Low-voltage electrical installations - - -
Part 4-44: Protection for safety - Protection
against voltage disturbances and
electromagnetic disturbances
1) 3)
IEC 60364-5-54 - Electrical installations of buildings - HD 60364-5-54 2007
(mod) Part 5-54: Selection and erection of electrical
equipment - Earthing arrangements,
protective conductors and protective bonding
conductors
IEC 60603-7 Series Connectors for electronic equipment - EN 60603-7 Series
Part 7: Detail specification for 8-way, shielded
free and fixed connectors with common
mating features, with assessed quality

1) 3)
IEC 60757 - Code for designation of colours HD 457 S1 1985

IEC 60793 Series Optical fibres EN 60793 Series

IEC 60794 Series Optical fibre cables EN 60794 Series

1)
Undated reference.
2)
To be published.
3)
Valid edition at date of issue.

Publication Year Title EN/HD Year

1)
IEC 60807-2 - Rectangular connectors for frequencies below - -
3 MHz -
Part 2: Detail specification for a range of
connectors, with assesed quality, with
trapezoidal shaped metal shells and round
contacts - Fixed solder contact types

1)
IEC 60807-3 - Rectangular connectors for frequencies below - -
3 MHz -
Part 3: Detail specification for a range of
connectors with trapezoidal shaped metal
shells and round contacts - Removable crimp
types with closed crimp barrels, rear
insertion/rear extraction
1) 3)
IEC 60825-2 - Safety of laser products - EN 60825-2 2004
Part 2: Safety of optical fibre communication
systems (OFCS)
IEC 60874-10 Series Connectors for optical fibres and cables - - -
Part 10: Detail specification for fibre optic
connector type BFOC/2,5 terminated to
multimode fibre type A1
IEC 60874-14 Series Connectors for optical fibres and cables - - -
Part 14: Detail specification for fibre optic
connector type SC/PC standard terminated to
multimode fibre type A1a, A1b
1) 3)
IEC 60947-5-2 - Low-voltage switchgear and controlgear - EN 60947-5-2 2007
Part 5-2: Control circuit devices and switching
elements - Proximity switches
IEC 60950-1 (mod) 2005 Information technology equipment - Safety - EN 60950-1 2006
Part 1: General requirements
2)
IEC 61076-2-101 200X Connectors for electronic equipment - Product - -
requirements -
Part 2-101: Circular connectors - Detail
specification for M12 connectors with screw-
locking
1) 3)
IEC 61076-3-106 - Connectors for electronic equipment - Product EN 61076-3-106 2006
requirements -
Part 3-106: Rectangular connectors - Detail
specification for protective housings for use
with 8-way shielded and unshielded
connectors for industrial environments
incorporating the IEC 60603-7 series interface

2)
IEC 61076-3-117 200X Connectors for electronic equipment - Product - -
requirements -
Part 3-117: Rectangular connectors - Detail
specification for protective housings for use
with 8-way shielded and unshielded
connectors for industrial environments
incorporating the IEC 60603-7 series
interface - Variant 14 related to
IEC 61076-3-106 - Push pull coupling

1) 3)
IEC 61158-2 - Industrial communication networks - Fieldbus EN 61158-2 2008
specifications -
Part 2: Physical layer specification and service
definition
- 7 - EN 61918:2008
Publication Year Title EN/HD Year

1) 3)
IEC 61754-2 - Fibre optic connector interfaces - EN 61754-2 1997
Part 2: Type BFOC/2,5 connector family

1) 3)
IEC 61754-4 - Fibre optic connector interfaces - EN 61754-4 1997
Part 4: Type SC connector family

1) 3)
IEC 61754-20 - Fibre optic connector interfaces - EN 61754-20 2002
Part 20: Type LC connector family

1) 3)
IEC 61754-22 - Fibre optic connector interfaces - EN 61754-22 2005
Part 22: Type F-SMA connector family

1) 3)
IEC 61784-1 - Industrial communication networks - Profiles - EN 61784-1 2008
Part 1: Fieldbus profiles
1) 3)
IEC 61784-2 - Industrial communication networks - Profiles - EN 61784-2 2008
Part 2: Additional fieldbus profiles for real-time
networks based on ISO/IEC 8802-3

1) 3)
IEC 61784-3 - Industrial communication networks - Profiles - EN 61784-3 2008
Part 3: Functional safety fieldbuses - General
rules and profile definitions
4)
IEC 61784-4 200X Industrial communication networks - Profiles - - -
Part 4: Profiles for secure communications in
industrial networks
1) 3)
IEC 61784-5-2 - Industrial communication networks - Profiles - EN 61784-5-2 2008
Part 5-2: Installation of fieldbuses - Installation
profiles for CPF 2
1) 3)
IEC 61784-5-3 - Industrial communication networks - Profiles - EN 61784-5-3 2008
Part 5-3: Installation of fieldbuses - Installation
profiles for CPF 3
1) 3)
IEC 61784-5-6 - Industrial communication networks - Profiles - EN 61784-5-6 2008
Part 5-6: Installation of fieldbuses - Installation
profiles for CPF 6
1) 3)
IEC 61784-5-10 - Industrial communication networks - Profiles - EN 61784-5-10 2008
Part 5-10: Installation of fieldbuses -
Installation profiles for CPF 10

1) 3)
IEC 61784-5-11 - Industrial communication networks - Profiles - EN 61784-5-11 2008
Part 5-11: Installation of fieldbuses -
Installation profiles for CPF 11

IEC 61935-1 (mod) 2005 Testing of balanced communication cabling in EN 61935-1 2005
accordance with ISO/IEC 11801 -
5)
Part 1: Installed cabling
2)
IEC 62439 200X High availability automation networks - -

4)
IEC 62443 200X Security for industrial process measurement - -
and control - Network and system security

1)
ISO/IEC 8802-3 - Information technology - Telecommunications - -
and information exchange between systems -
Local and metropolitan area networks -
Specific requirements -
Part 3: Carrier sense multiple access with
collision detection (CSMA/CD) access method
and physical layer specifications

4)
In preparation.
5)
The title of EN 61935-1 is: Testing of balanced communication cabling in accordance with standards series EN 50173 - Part 1:
Installed cabling.
Publication Year Title EN/HD Year

6)
ISO/IEC 11801 2002 Information technology - Generic cabling for EN 50173-1 and 2007
7)
customer premises EN 50173-2 2007

1)
ISO/IEC 14763-1 - Information technology - Implementation and -
operation of customer premises cabling -
Part 1: Administration
1) 8) 1)
ISO/IEC/TR 14763-2 - Information technology - Implementation and EN 50174-2 -
operation of customer premises cabling -
Part 2: Planning and installation

1)
ISO/IEC 14763-3 - Information technology - Implementation and - -
operation of customer premises cabling -
Part 3: Testing of optical fibre cabling

1) 9) 1)
ISO/IEC 18010 - Information technology - Pathways and EN 50174-1 and -
spaces for customer premises cabling EN 50174-2

ISO/IEC 24702 2006 Information technology - Generic cabling- EN 50173-1 and 2007
10)
Industrial premises EN 50173-3 2007

ANSI/NFPA 2003 Fluid power systems and components - - -
T3.5.29 R1 Electrically-controlled industrial valves -
Interface dimensions for electrical connectors

6)
The title of EN 50173-1 is: Information technology - Generic cabling systems – Part 1: General requirements.
7)
The title of EN 50173-2 is: Information technology - Generic cabling systems – Part 2: Office premises.
8)
The title of EN 50174-2 is: Information technology - Cabling installation - Part 2: Installation planning and practices inside
buildings.
9)
The title of EN 50174-1 is: Information technology - Cabling installation - Part 1: Installation specification and quality assurance.
10)
The title of EN 50173-3 is: Information technology - Generic cabling systems - Part 3: Industrial premises.

IEC 61918
Edition 1.0 2007-12
INTERNATIONAL
STANDARD
Industrial communication networks – Installation of communication networks in
industrial premises
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XG
ICS 35.110  25.040.40  33.180  22.060 ISBN 2-8318-9385-2

– 2 – 61918 © IEC:2007(E)
CONTENTS
FOREWORD.10
INTRODUCTION.12
1 Scope.15
2 Normative references .15
3 Terms, definitions, and abbreviated terms .18
3.1 Terms and definitions .18
3.2 Abbreviated terms .26
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.41
4.4.3 Connections within a channel/permanent link .43
4.4.4 Terminators .48
4.4.5 Device location and connection .48
4.4.6 Coding and labelling .49
4.4.7 Earthing and bonding of equipment and devices and shielded cabling .49
4.4.8 Storage and transportation of cables .57
4.4.9 Routing of cables.58
4.4.10 Separation of circuits.59
4.4.11 Mechanical protection of cabling components .60
4.4.12 Installation in special areas .61
4.5 Cabling planning documentation.61
4.5.1 Common description.61
4.5.2 Cabling planning documentation for CPs .61
4.5.3 Network certification documentation .62
4.5.4 Cabling planning documentation for generic cabling in accordance
with ISO/IEC 24702 .62
4.6 Verification of cabling planning specification .62
5 Installation implementation .62
5.1 General requirements.62

61918 © IEC:2007(E) – 3 –
5.1.1 Common description.62
5.1.2 Installation of CPs .62
5.1.3 Installation of generic cabling in industrial premises .62
5.2 Cable installation.62
5.2.1 General requirements for all cabling types.62
5.2.2 Installation and routing .68
5.2.3 Specific requirements for CPs .70
5.2.4 Specific requirements for wireless installation.70
5.2.5 Specific requirements for generic cabling in accordance with
ISO/IEC 24702 .70
5.3 Connector installation.70
5.3.1 Common description.70
5.3.2 Shielded connectors .70
5.3.3 Unshielded connectors .71
5.3.4 Specific requirements for CPs .71
5.3.5 Specific requirements for wireless installation.71
5.3.6 Specific requirements for generic cabling in accordance with
ISO/IEC 24702 .71
5.4 Terminator installation.71
5.4.1 Common description.71
5.4.2 Specific requirements for CPs .71
5.5 Device installation .71
5.5.1 Common description.71
5.5.2 Specific requirements for CPs .72
5.6 Coding and labelling.72
5.6.1 Common description.72
5.6.2 Specific requirements for CPs .72
5.7 Earthing and bonding of equipment and devices and shield cabling.72
5.7.1 Common description.72
5.7.2 Bonding and earthing of enclosures and pathways .72
5.7.3 Earthing methods .74
5.7.4 Shield earthing methods .75
5.7.5 Specific requirements for CPs .77
5.7.6 Specific requirements for generic cabling in accordance with
ISO/IEC 24702 .77
5.8 As-implemented cabling documentation.77
6 Installation verification and installation acceptance test.78
6.1 Introduction .78
6.2 Installation verification.78
6.2.1 General .78
6.2.2 Verification according to cabling planning documentation .78
6.2.3 Verification of earthing and bonding .80
6.2.4 Verification of shield earthing .81
6.2.5 Verification of cabling system .81
6.2.6 Cable selection verification.81
6.2.7 Connector verification.81
6.2.8 Connection verification .82
6.2.9 Terminators verification .83
6.2.10 Coding and labelling verification .84

– 4 – 61918 © IEC:2007(E)
6.2.11 Verification report .84
6.3 Installation acceptance test .84
6.3.1 General .84
6.3.2 Acceptance test of Ethernet based cabling .86
6.3.3 Acceptance test of non Ethernet based cabling .88
6.3.4 Specific requirements for wireless installation.89
6.3.5 Acceptance test report.89
7 Installation administration.89
7.1 General .89
7.2 Fields covered by the administration .89
7.3 Basic principles for the administration system .90
7.4 Working procedures .90
7.5 Device location labelling.90
7.6 Component cabling labelling.91
7.7 Documentation .91
7.8 Specific requirements for administration .92
8 Installation maintenance and installation troubleshooting .92
8.1 General .92
8.2 Maintenance.93
8.2.1 Scheduled maintenance .93
8.2.2 Condition-based maintenance .94
8.2.3 Corrective maintenance.95
8.3 Troubleshooting .95
8.3.1 General description .95
8.3.2 Evaluation of the problem .95
8.3.3 Typical problems .96
8.3.4 Troubleshooting procedure .98
8.3.5 Simplified troubleshooting procedure .99
8.4 Specific requirements for maintenance and troubleshooting . 100
Annex A (informative) Introduction to generic cabling for industrial premises . 101
Annex B (informative) MICE description methodology .102
B.1 General .102
B.2 Introduction to MICE.102
B.3 Examples of use of the MICE concept .103
B.3.1 Common description .103
B.3.2 Examples of mitigation.104
B.4 Determining E classification .105
B.5 The MICE table .107
Annex C (informative) Network topologies.110
C.1 Common description.110
C.2 Total cable demand .110
C.3 Maximum cable segment length.110
C.4 Maximum network length .110
C.5 Fault tolerance .110
C.5.1 General .110
C.5.2 Use of redundancy.110
C.5.3 Failure analysis for networks with redundancy .110

61918 © IEC:2007(E) – 5 –
C.6 Network access for diagnosis convenience.111
C.7 Maintainability and on-line additions .111
Annex D (informative) Connector table.112
Annex E (informative) Power networks with respect to electromagnetic interference –
TN-C and TN-S approaches .117
Annex F (informative) Conversion table mm to AWG.119
Annex G (informative) Installed cabling verification checklists. 120
G.1 Introduction .120
G.2 Copper cabling verification checklist.120
G.3 Optical fibre cabling verification checklist .123
Annex H (informative) Connector/cable pinning.124
H.1 Introduction .124
H.2 Constructing cord sets.124
H.2.1 Straight through cord sets with M12-4 D-coding connectors.124
H.2.2 Crossover cord sets with M12-4 D-coding connectors.124
H.2.3 Straight through cord sets with 8-way modular connectors.125
H.2.4 Crossover cord sets with 8-way modular connector.126
H.2.5 Straight conversion from one connector family to another . 126
H.2.6 Crossover conversion from one connector family to another .127
Annex I (informative) Guidance for terminating cable ends . 128
I.1 Introduction .128
I.2 Guidance for terminating shielded twisted pair cable ends for 8-way modular plugs.128
I.3 Guidance for terminating unshielded twisted pair cable ends for 8-way modular
plugs .130
I.4 Guidance for M12-4 D-coding connector installation . 131
I.5 Guidance for terminating optical fibre cable ends .134
Annex J (informative) Recommendations for bulkhead connection performance and
channel performance with more than 4 connections in the channel.135
J.1 Introduction .135
J.2 Recommendations.135
Annex K (informative) Fieldbus data transfer testing .136
K.1 Background .136
K.2 Allowable error rates for control systems .136
K.2.1 Bit errors .136
K.2.2 Burst errors .136
K.3 Testing channel performance .137
K.4 Testing cable parameters .137
K.4.1 General .137
K.4.2 Generic cable testing.137
K.4.3 Fieldbus cable testing.137
K.5 Testing fieldbus data rate performance.138
K.5.1 General .138
K.5.2 Fieldbus test.138
K.5.3 Planning for fieldbus data rate testing.138
K.5.4 Fieldbus data rate test reporting template.139
K.5.5 Values for acceptable fieldbus performance.139

– 6 – 61918 © IEC:2007(E)
Annex L (informative) Communication network installation work responsibility . 140
L.1 Introduction .140
L.2 Installation work responsibility.140
L.3 Installation work responsibility table .140
Annex M (informative) Trade names of communication profiles . 141
Annex N (informative) Validation measurements . 143
N.1 General .143
N.2 DCR measurements .143
N.2.1 Purpose of test .143
N.2.2 Assumptions .143
N.2.3 Measurements .143
N.2.4 Calculations.145
N.2.5 Measurement results .145

Bibliography.149

Figure 1 – Industrial network installation life cycle .13
Figure 2 – Standards relationships.14
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 .44
Figure 13 – Enhanced reference implementation model .45
Figure 14 – Selection of the earthing and bonding systems.52
Figure 15 – Wiring for bonding and earthing in a mesh equipotential configuration .54
Figure 16 – Wiring of the earths in a star earth configuration .55
Figure 17 – Schematic diagram of a field device with direct earthing.56
Figure 18 – Schematic diagram of a field device with parallel RC circuit earthing.56
Figure 19 – Insert edge protector .64
Figure 20 – Use an uncoiling device and avoid forming loop .64
Figure 21 – Avoid torsion .65
Figure 22 – Maintain minimum bending radius .65
Figure 23 – Do not pull by the individual wires .66
Figure 24 – Use cable clamps with a large (wide) surface.66
Figure 25 – Cable gland with bending protection.66
Figure 26 – Spiral tube .67
Figure 27 – Separate cable pathways .69
Figure 28 – Surface preparation for electromechanical earth and bonding connections.73

61918 © IEC:2007(E) – 7 –
Figure 29 – Use of flexible bonding straps at movable metallic pathways.73
Figure 30 – Example of isolated bus bar .74
Figure 31 – Example of isolator for mounting DIN rails.74
Figure 32 – Parallel RC shield earthing.
...