Electrical equipment for measurement, control and laboratory use - EMC requirements – Part 3-1: Immunity requirements for safety-related systems and for equipment intended to perform safety-related functions (functional safety) – General industrial applications

IEC 61326-3-1:2017 is also available as IEC 61326-3-1:2017 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 61326-3-1:2017 covers all equipment within the scope of IEC 61326-1, but is limited to systems and equipment for industrial applications intended to perform safety functions as defined in IEC 61508 with SIL 1-3.
This second edition cancels and replaces the first edition published in 2008. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- extension of the frequency range up to 6 GHz for the radio-frequency electromagnetic field test according to IEC 61000-4-3,
- replacement of the performance criterion FS with DS according to the generic standard IEC 61000-6-7,
- adding Table 1 - Aspects to be considered during application of performance criterion DS,
- including immunity tests for devices with current consumption > 16 A according to IEC 61000-4-34,
- updating Table 8 - Frequency ranges of mobile transmitters and ISM equipment,
- updating Figure A.1 and Figure 1 for better readability.

Matériel électrique de mesure, de commande et de laboratoire -Exigences relatives à la CEM - Partie 3-1: Exigences d'immunité pour les systèmes relatifs à la sécurité et pour les matériels destinés à réaliser des fonctions relatives à la sécurité (sécurité fonctionnelle) - Applications industrielles générales

IEC 61326-3-1:2017 est disponible sous forme de IEC 61326-3-1:2017 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.
L’IEC 61326-3-1:2017 couvre tous les matériels qui relèvent du domaine d’application de l’IEC 61326-1, mais est limitée aux systèmes et matériels pour applications industrielles destinés à réaliser des fonctions de sécurité telles que définies dans l’IEC 61508, avec un niveau d’intégrité de sécurité (SIL) 1-3.
Cette deuxième édition annule et remplace la première édition parue en 2008. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- extension de la plage de fréquences jusqu’à 6 GHz pour l’essai de champ électromagnétique à fréquences radioélectriques, conformément à l’IEC 61000-4-3,
- remplacement du critère de performance FS par DS, conformément à la norme générique IEC 61000-6-7,
- ajout du Tableau 1 – aspects à prendre en considération lors de l'application du critère de performance DS,
- intégration d’essais d’immunité pour les dispositifs ayant une consommation de courant > 16 A, conformément à l’IEC 61000-4-34,
- mise à jour du Tableau 8 - Plages de fréquences des émetteurs mobiles et des matériels ISM,
- mise à jour de la Figure A.1 et de la Figure 1 pour une meilleure lisibilité.

General Information

Status
Published
Publication Date
15-May-2017
Technical Committee
Current Stage
PPUB - Publication issued
Start Date
16-May-2017
Completion Date
16-May-2017
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IEC 61326-3-1:2017 - Electrical equipment for measurement, control and laboratory use - EMC requirements – Part 3-1: Immunity requirements for safety-related systems and for equipment intended to perform safety-related functions (functional safety) – General industrial applications
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IEC 61326-3-1
Edition 2.0 2017-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electrical equipment for measurement, control and laboratory use – EMC
requirements –
Part 3-1: Immunity requirements for safety-related systems and for equipment
intended to perform safety-related functions (functional safety) – General
industrial applications
Matériel électrique de mesure, de commande et de laboratoire – Exigences
relatives à la CEM –
Partie 3-1: Exigences d'immunité pour les systèmes relatifs à la sécurité et
pour les matériels destinés à réaliser des fonctions relatives à la sécurité
(sécurité fonctionnelle) – Applications industrielles générales
IEC 61326-3-1:2017-05(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 61326-3-1
Edition 2.0 2017-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electrical equipment for measurement, control and laboratory use – EMC
requirements –
Part 3-1: Immunity requirements for safety-related systems and for equipment
intended to perform safety-related functions (functional safety) – General
industrial applications
Matériel électrique de mesure, de commande et de laboratoire – Exigences
relatives à la CEM –
Partie 3-1: Exigences d'immunité pour les systèmes relatifs à la sécurité et
pour les matériels destinés à réaliser des fonctions relatives à la sécurité
(sécurité fonctionnelle) – Applications industrielles générales
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.040.40; 33.100.20 ISBN 978-2-8322-4212-4

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 61326-3-1:2017 © IEC 2017
CONTENTS

FOREWORD ........................................................................................................................... 4

INTRODUCTION ..................................................................................................................... 6

1 Scope .............................................................................................................................. 8

2 Normative references ...................................................................................................... 8

3 Terms, definitions and abbreviations ............................................................................... 9

3.1 Terms and definitions .............................................................................................. 9

3.2 Abbreviations ........................................................................................................ 12

4 General ......................................................................................................................... 13

5 EMC test plan ................................................................................................................ 13

5.1 General ................................................................................................................. 13

5.2 Instruction for testing ............................................................................................ 13

5.3 Configuration of EUT during testing ...................................................................... 14

5.3.1 General ......................................................................................................... 14

5.3.2 Composition of EUT ....................................................................................... 14

5.3.3 Assembly of EUT ........................................................................................... 14

5.3.4 I/O ports ........................................................................................................ 14

5.3.5 Auxiliary equipment (AE) ............................................................................... 14

5.3.6 Cabling and earthing (grounding) ................................................................... 14

5.4 Operation conditions of EUT during testing ........................................................... 14

5.4.1 Operation modes ........................................................................................... 14

5.4.2 Environmental conditions ............................................................................... 15

5.4.3 EUT software during test ............................................................................... 15

5.5 Specification of performance criteria ..................................................................... 15

5.6 Test description .................................................................................................... 15

6 Performance criteria ...................................................................................................... 15

6.1 Performance criterion DS ...................................................................................... 15

6.2 Application of the performance criterion DS .......................................................... 16

6.3 Aspects to be considered during application of performance criterion DS .............. 16

7 Immunity requirements .................................................................................................. 17

8 Test set-up and test philosophy for EUTs with functions intended for safety

applications ................................................................................................................... 22

8.1 Testing of safety-related systems and equipment intended to be used in

safety-related systems .......................................................................................... 22

8.2 Test philosophy for equipment intended for use in safety-related systems ............ 22

8.3 Test philosophy for safety-related systems ........................................................... 23

8.4 Test configuration and test performance ............................................................... 23

8.5 Monitoring ............................................................................................................. 24

9 Test results and test report ............................................................................................ 24

Annex A (informative) Approaches on how to apply IEC 61326-3 series ............................... 27

Annex B (informative) Evaluation of electromagnetic phenomena ........................................ 30

Annex C (informative) Allowed effects during immunity tests ................................................ 34

Bibliography .......................................................................................................................... 39

Figure 1 – Typical test set-up for equipment intended for use in safety-related system,

tested as stand-alone equipment or entire system ................................................................ 25

---------------------- Page: 4 ----------------------
IEC 61326-3-1:2017 © IEC 2017 – 3 –

Figure 2 – Typical test set-up for equipment intended for use in a safety-related system

integrated into a representative safety-related system during test ......................................... 26

Figure A.1 – Correlation between the standards IEC 61326-1, IEC 61326-2-x,

IEC 61326-3-1 and IEC 61326-3-2 ........................................................................................ 29

Figure B.1 – Emission/immunity levels and compatibility level, with an example of

emission/immunity levels for a single emitter and susceptor, as a function of some

independent variables (see IEC TR 61000-1-1) ..................................................................... 31

Table 1 – Reaction of EUT during test .................................................................................. 16

Table 2 – Immunity test requirements – Enclosure port ......................................................... 17

Table 3 – Immunity test requirements – Input and output AC power ports ............................. 18

Table 4 – Immunity test requirements – Input and output DC power ports ............................. 19

Table 5 – Immunity test requirements – I/O signal/control ports ............................................ 19

Table 6 – Immunity test requirements – I/O signal/control ports connected direct to

power supply networks.......................................................................................................... 20

Table 7 – Immunity test requirements – Functional earth port ............................................... 20

Table 8 – Frequency ranges of mobile transmitters and ISM equipment for tests with

electromagnetic fields ........................................................................................................... 21

Table 9 – Frequency ranges of mobile transmitters and ISM equipment for the

conducted RF tests ............................................................................................................... 22

Table 10 – Applicable performance criteria and observed behaviour during test for

equipment intended for use in safety-related systems ........................................................... 23

Table B.1 – Exemplary considerations on electromagnetic phenomena and test levels

with regard to functional safety in industrial applications ....................................................... 33

Table C.1 – Allowed effects during immunity tests on functions of equipment ....................... 35

Table C.2 – Allowed effects during immunity tests on functions of a system .......................... 37

---------------------- Page: 5 ----------------------
– 4 – IEC 61326-3-1:2017 © IEC 2017
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRICAL EQUIPMENT FOR MEASUREMENT, CONTROL
AND LABORATORY USE – EMC REQUIREMENTS –
Part 3-1: Immunity requirements for safety-related systems and
for equipment intended to perform safety-related functions
(functional safety) – General industrial applications
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote

international co-operation on all questions concerning standardization in the electrical and electronic fields. To

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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 61326-3-1 has been prepared by subcommittee 65A: System

aspects, of IEC technical committee 65: Industrial-process measurement, control and

automation.

This second edition cancels and replaces the first edition published in 2008. This edition

constitutes a technical revision. This edition includes the following significant technical

changes with respect to the previous edition:

• extension of the frequency range up to 6 GHz for the radio-frequency electromagnetic field

test according to IEC 61000-4-3,

• replacement of the performance criterion FS with DS according to the generic standard

IEC 61000-6-7,

• adding Table 1 – Aspects to be considered during application of performance criterion DS,

---------------------- Page: 6 ----------------------
IEC 61326-3-1:2017 © IEC 2017 – 5 –

• including immunity tests for devices with current consumption > 16 A according to

IEC 61000-4-34,
• updating Table 8 – Frequency ranges of mobile transmitters and ISM equipment,
• updating Figure A.1 and Figure 1 for better readability.
IEC 61326-3-1 is to be read in conjunction with IEC 61326-1.
The text of this standard is based on the following documents:
FDIS Report on voting
65A/819/FDIS 65A/825/RVD

Full information on the voting for the approval of this standard can be found in the report on

voting indicated in the above table.

This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

A list of all the parts of the IEC 61326 series, under the general title Electrical equipment for

measurement, control and laboratory use – EMC requirements, can be found on the IEC

website.

The committee has decided that the contents of this publication will remain unchanged until

the stability date indicated on the IEC website under "http://webstore.iec.ch" in the data

related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates

that it contains colours which are considered to be useful for the correct

understanding of its contents. Users should therefore print this document using a

colour printer.
---------------------- Page: 7 ----------------------
– 6 – IEC 61326-3-1:2017 © IEC 2017
INTRODUCTION

Functional safety is that part of the overall safety relating to the equipment under control

(EUC) and the EUC control system which depends on the correct functioning of the electrical

safety-related systems. To achieve this, all items of equipment of the safety-related system

which are involved in the performance of the safety functions must behave in a specified

manner under all relevant conditions.

The IEC basic safety publication for functional safety of electrical/electronic/programmable

electronic safety-related systems is IEC 61508. It sets the overall requirements to achieve

functional safety. Sufficient immunity to electromagnetic disturbances is one of those

requirements.

The concept of IEC 61508 distinguishes between the consideration of the application and the

design of safety-related electrical and electronic systems. The overall safety requirements

specification specifies all relevant requirements of the intended application, as follows:

a) definition of the safety functions, based on a risk assessment of the intended application

(which functions are intended to reduce risk);

b) appropriate safety integrity level (SIL) for each safety-function based on a risk assessment

of the intended application;

c) definition of the environment in which the system is intended to work including the

electromagnetic environment as required by IEC 61508-2.

The requirements for each safety function are then specified in one or more system safety

requirements specifications (SSRS). Hence, with regard to immunity against electromagnetic

phenomena, the essential starting point is that the electromagnetic environment and its

phenomena are considered in the SSRS, as required by IEC 61508. The safety-related

system intended to implement the specified safety function has to fulfil the SSRS, and, from it,

corresponding immunity requirements have to be derived for the items of equipment, which

results in an equipment requirement specification. With respect to the electromagnetic

environment, the SSRS and the equipment requirement specification should be based on a

competent assessment of the foreseeable electromagnetic threats in the real environment

over the whole operational life of the equipment. Hence, immunity requirements for the

equipment depend on the characteristics of the electromagnetic environment in which the

equipment is intended to be used.

The equipment manufacturer, therefore, has to prove that the equipment fulfils the equipment

requirement specification and the system integrator must prove that the system fulfils the

SSRS. Evidence has to be produced by application of appropriate methods. They do not need

to consider any other aspects of the application, for example, risk of the application

associated to any failure of the safety-related system. The objective is for all equipment in the

system to comply with particular performance criteria taking into account functional safety

aspects (for example, the performance criterion DS) up to levels specified in the SSRS

independent of the required safety integrity level (SIL).
For approaches on how to apply IEC 61326-3 series, see Annex A.

There exists meanwhile the generic EMC standard IEC 61000-6-7 dealing with functional

safety aspects in industrial environments. Generic EMC standards are designed to apply for a

defined electromagnetic environment, to products for which no dedicated product family

EMC/product EMC standards exist. However, for the equipment in the scope of this document,

the information given in the generic EMC standard was considered not to be sufficient. More

detailed information and specifications were needed, for example specific test set-ups,

consideration of the functional earth port or the deliberate differentiation between types of

electromagnetic environments relevant for the equipment in the scope of this document.

---------------------- Page: 8 ----------------------
IEC 61326-3-1:2017 © IEC 2017 – 7 –

Though historically this product standard was developed several years before the generic

EMC standard, this 2 edition considers the information given in the generic EMC standard

and applies it where appropriate.
---------------------- Page: 9 ----------------------
– 8 – IEC 61326-3-1:2017 © IEC 2017
ELECTRICAL EQUIPMENT FOR MEASUREMENT, CONTROL
AND LABORATORY USE – EMC REQUIREMENTS –
Part 3-1: Immunity requirements for safety-related systems and
for equipment intended to perform safety-related functions
(functional safety) – General industrial applications
1 Scope

This part of IEC 61326 covers all equipment within the scope of IEC 61326-1, but is limited to

systems and equipment for industrial applications intended to perform safety functions as

defined in IEC 61508 with SIL 1-3.
The electromagnetic environments encompassed by this product family standard are

industrial, both indoor and outdoor, as described for industrial locations in IEC 61000-6-2 or

defined in 3.8 of IEC 61326-1. Equipment and systems intended for use in other

electromagnetic environments, for example, in the process industry or in environments with

potentially explosive atmospheres, are excluded from the scope of this document.

Equipment and systems considered as “proven-in-use” according to IEC 61508 or “prior use”

according to IEC 61511 are excluded from the scope of this document.

Fire alarm systems and security alarm systems intended for protection of buildings are

excluded from the scope of this document.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their

content constitutes requirements 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.

IEC 60050-161, International Electrotechnical Vocabulary – Part 161: Electromagnetic

compatibility (available at IEC 61000-4-2:2008, Electromagnetic compatibility (EMC) – Part 4-2: Testing and
measurement techniques – Electrostatic discharge immunity test
IEC 61000-4-3:2006, Electromagnetic compatibility (EMC) – Part 4-3: Testing and

measurement techniques – Radiated, radio-frequency, electromagnetic field immunity test

IEC 61000-4-3:2006/AMD1:2007
IEC 61000-4-3:2006/AMD2:2010
IEC 61000-4-4:2012, Electromagnetic compatibility (EMC) – Part 4-4: Testing and
measurement techniques – Electrical fast transient/burst immunity test
IEC 61000-4-5:2014, Electromagnetic compatibility (EMC) – Part 4-5: Testing and
measurement techniques – Surge immunity test
IEC 61000-4-6:2013, Electromagnetic compatibility (EMC) – Part 4-6: Testing and

measurement techniques – Immunity to conducted disturbances, induced by radio-frequency

fields
---------------------- Page: 10 ----------------------
IEC 61326-3-1:2017 © IEC 2017 – 9 –
IEC 61000-4-8:2009, Electromagnetic compatibility (EMC) – Part 4-8: Testing and
measurement techniques – Power frequency magnetic field immunity test

IEC 61000-4-11:2004, Electromagnetic compatibility (EMC) – Part 4-11: Testing and

measurement techniques – Voltage dips, short interruptions and voltage variations immunity

tests

IEC 61000-4-16:2015, Electromagnetic compatibility (EMC) – Part 4-16: Testing and

measurement techniques – Test for immunity to conducted, common mode disturbances in

the frequency range 0 Hz to 150 kHz

IEC 61000-4-29:2000, Electromagnetic compatibility (EMC) – Part 4-29: Testing and

measurement techniques – Voltage dips, short interruptions and voltage variations on d.c.

input power port immunity tests

IEC 61000-4-34:2005, Electromagnetic compatibility (EMC) – Part 4-34: Testing and

measurement techniques – Voltage dips, short interruptions and voltage variations immunity

tests for equipment with input current more than 16 A per phase
IEC 61000-4-34:2005/AMD1:2009

IEC 61000-6-2:2016, Electromagnetic compatibility (EMC) – Part 6-2: Generic standards –

Immunity for industrial environments

IEC 61326-1:2012, Electrical equipment for measurement, control and laboratory use – EMC

requirements – Part 1: General requirements

IEC 61326-3-2:___ , Electrical equipment for measurement, control and laboratory use –

EMC requirements – Part 3-2: Immunity requirements for safety-related systems and for

equipment
...

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