IEC 61800-5-2:2007

Adjustable speed electrical power drive systems - Part 5-2: Safety requirements - Functional

IEC 61800-5-2:2007 specifies requirements and makes recommendations for the design and development, integration and validation of PDS(SR)s in terms of their functional safety considerations. It applies to adjustable speed electric drive systems covered by the other parts of the IEC 61800 series of standards. IEC 61800-5-2, which is a product standard, sets out safety-related considerations of PDS(SR)s in terms of the framework of IEC 61508, and introduces requirements for PDS(SR)s as subsystems of a safety-related system. It is intended to facilitate the realisation of the electrical/electronic/programmable electronic (E/E/PE) elements of a PDS(SR) in relation to the safety performance of safety function(s) of a PDS.

Entraînements électriques de puissance à vitesse variable - Partie 5-2: Exigences de sécurité - Fonctionnelle

La CEI 61800-5-2:2007 spécifie des exigences et donne des recommandations pour la conception et le développement, l'intégration et la validation des PDS(SR), en considération de leur sécurité fonctionnelle. Elle s'applique aux entraînements électriques de puissance à vitesse variable couverts par les autres parties de la série CEI 61800. La CEI 61800-5-2, qui est une norme de produit, expose des considérations relatives à la sécurité des PDS(SR) prises dans le cadre de la CEI 61508 et présente des exigences pour les PDS(SR) en tant que sous-systèmes d'un système relatif à la sécurité. Elle est destinée à faciliter la réalisation des éléments électriques/électroniques/électroniques programmables (E/E/PE) d'un PDS(SR) en liaison avec la performance de sécurité d'une ou des fonctions de sécurité d'un PDS.

General Information

• Status: Published
• Publication Date: 15-Jul-2007
• ICS: 13.110 - Safety of machinery
• ICS: 29.130.99 - Other switchgear and controlgear
• ICS: 29.200 - Rectifiers. Convertors. Stabilized power supply
• Technical Committee: SC 22G - Adjustable speed electric power drive systems (PDS)
• Drafting Committee: WG 6 - TC 22/SC 22G/WG 6
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 18-Apr-2016

Relations

• Revised: IEC 61800-5-2:2016 - Adjustable speed electrical power drive systems - Part 5-2: Safety requirements - Functional
• Effective Date: 05-Sep-2023

Standards Content (Sample)

INTERNATIONAL IEC
STANDARD 61800-5-2
First edition
2007-07
Adjustable speed electrical power drive systems –
Part 5-2:
Safety requirements –
Functional
Reference number
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
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INTERNATIONAL IEC
STANDARD 61800-5-2
First edition
2007-07
Adjustable speed electrical power drive systems –
Part 5-2:
Safety requirements –
Functional
PRICE CODE
Commission Electrotechnique Internationale XB
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue

– 2 – 61800-5-2 © IEC:2007(E)
CONTENTS
FOREWORD.5
INTRODUCTION.7

1 Scope and object.8
2 Normative references .9
3 Terms and definitions .10
4 Designated safety functions.15
4.1 General .15
4.2 Safety functions .16
4.2.1 Limit values .16
4.2.2 Stopping functions.16
4.2.3 Other safety functions.17
5 Management of functional safety .18
5.1 Objective.18
5.2 PDS(SR) development lifecycle .18
5.3 Functional safety planning.19
5.4 Safety requirements specification (SRS) for a PDS(SR) .21
5.4.1 General .21
5.4.2 Safety functionality requirements specification .21
5.4.3 Safety integrity requirements specification.22
6 Requirements for design and development of a PDS(SR) .22
6.1 General requirements.22
6.1.1 Change in operational status .22
6.1.2 Design standards.22
6.1.3 Realisation .23
6.1.4 Safety integrity and fault detection.23
6.1.5 Safety and non-safety functions.23
6.1.6 SIL to be used .23
6.1.7 Software requirements.23
6.1.8 Review of requirements .23
6.1.9 Design documentation .24
6.2 PDS(SR) design requirements.24
6.2.1 Requirements for probability of dangerous random hardware failures
per hour (PFH) .24
6.2.2 Architectural constraints .26
6.2.3 Estimation of safe failure fraction (SFF).28
6.2.4 Requirements for systematic safety integrity of a PDS(SR) and
PDS(SR) subsystems .28
6.2.5 Electromagnetic (EM) immunity requirement of a PDS(SR).31
6.3 Behaviour on detection of fault .31
6.3.1 Fault detection.31
6.3.2 Fault tolerance greater than zero.32
6.3.3 Fault tolerance zero.32
6.4 Additional requirements for data communications.32
6.5 PDS(SR) integration and testing requirements .33
6.5.1 Hardware integration .33

61800-5-2 © IEC:2007(E) – 3 –
6.5.2 Software integration .33
6.5.3 Modifications during integration .33
6.5.4 Applicable integration tests.33
6.5.5 Test documentation .34
7 Information for use .34
7.1 Information and instructions for safe application of a PDS(SR) .34
8 Verification and validation .35
8.1 General .35
8.2 Verification .36
8.3 Validation .36
8.4 Documentation .36
9 Test requirements .36
9.1 Planning of tests .36
9.2 Test documentation.36
10 Modification.37
10.1 Objective.37
10.2 Requirements.37
10.2.1 Modification request .37
10.2.2 Impact analysis.37
10.2.3 Authorization .37
10.2.4 Documentation .37

Annex A (informative) Sequential task table.38
Annex B (informative) Example for determination of PFH .41
Annex C (informative) Available failure rate databases .52
Annex D (informative) Fault lists and fault exclusions .54

Bibliography.64

Figure 1 – Functional elements of a PDS(SR) .9
Figure 2 – PDS(SR) development lifecycle.19
Figure 3 – Architectures for data communication ( a) White channel; b) Black channel) .33
Figure B.1 – Example PDS(SR) .41
Figure B.2 – Subsystems of the PDS(SR) .42
Figure B.3 – Function blocks of subsystem A/B.43
Figure B.4 – Reliability model (Markov) of subsystem A/B.46
Figure B.5 – Function blocks of subsystem PS/VM.48
Figure B.6 – Reliability model (Markov) of subsystem PS/VM .50

Table 1 – Alphabetical list of definitions .11
Table 2 – Safety integrity levels: target failure measures for a PDS(SR) safety function .24
Table 3 – Hardware safety integrity: architectural constraints on type A safety-related
subsystems.27
Table 4 – Hardware safety integrity: architectural constraints on type B safety-related
subsystems.28

– 4 – 61800-5-2 © IEC:2007(E)
Table B.1 – Determination of DC factor of subsystem A/B.45
Table B.2 – PFH value calculation results for subsystem A/B.47
Table B.3 – Determination of DC factor of subsystem A/B.48
Table B.4 – PFH value calculation results for subsystem PS/VM.51
Table D.1 – Conductors/cables .55
Table D.2 – Printed wiring boards/assemblies.55
Table D.3 – Terminal block .56
Table D.4 – Multi-pin connector .56
Table D.5 – Electromechanical devices (for example relay, contactor relays).57
Table D.6 – Transformers .57
Table D.7 – Inductances .58
Table D.8 – Resistors .58
Table D.9 – Resistor networks .58
Table D.10 – Potentiometers.59
Table D.11 – Capacitors .59
Table D.12 – Discrete semiconductors (for example diodes, Zener diodes, transistors,
triacs, GTO thyristors, IGBTs, voltage regulators, quartz crystal, phototransistors, light-
emitting diodes [LEDs]).59
Table D.13 – Optocouplers .
...

IEC 61800-5-2 ®
Edition 1.0 2007-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Adjustable speed electrical power drive systems –
Part 5-2: Safety requirements – Functional

Entraînements électriques de puissance à vitesse variable –
Partie 5-2: Exigences de sécurité – Fonctionnelle

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
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IEC 61800-5-2 ®
Edition 1.0 2007-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Adjustable speed electrical power drive systems –

Part 5-2: Safety requirements – Functional

Entraînements électriques de puissance à vitesse variable –

Partie 5-2: Exigences de sécurité – Fonctionnelle

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XB
ICS 13.110; 29.200 ISBN 978-2-83220-595-2

– 2 – 61800-5-2  IEC:2007
CONTENTS
FOREWORD . 5
INTRODUCTION . 7

1 Scope and object . 8
2 Normative references . 9
3 Terms and definitions . 10
4 Designated safety functions . 15
4.1 General . 15
4.2 Safety functions . 16
4.2.1 Limit values . 16
4.2.2 Stopping functions . 16
4.2.3 Other safety functions. 17
5 Management of functional safety . 18
5.1 Objective . 18
5.2 PDS(SR) development lifecycle . 18
5.3 Functional safety planning . 19
5.4 Safety requirements specification (SRS) for a PDS(SR) . 21
5.4.1 General . 21
5.4.2 Safety functionality requirements specification . 21
5.4.3 Safety integrity requirements specification . 22
6 Requirements for design and development of a PDS(SR) . 22
6.1 General requirements . 22
6.1.1 Change in operational status . 22
6.1.2 Design standards. 22
6.1.3 Realisation . 23
6.1.4 Safety integrity and fault detection . 23
6.1.5 Safety and non-safety functions . 23
6.1.6 SIL to be used . 23
6.1.7 Software requirements . 23
6.1.8 Review of requirements . 23
6.1.9 Design documentation . 24
6.2 PDS(SR) design requirements . 24
6.2.1 Requirements for probability of dangerous random hardware failures
per hour (PFH) . 24
6.2.2 Architectural constraints . 26
6.2.3 Estimation of safe failure fraction (SFF) . 28
6.2.4 Requirements for systematic safety integrity of a PDS(SR) and
PDS(SR) subsystems . 28
6.2.5 Electromagnetic (EM) immunity requirement of a PDS(SR) . 31
6.3 Behaviour on detection of fault . 31
6.3.1 Fault detection . 31
6.3.2 Fault tolerance greater than zero . 32
6.3.3 Fault tolerance zero . 32
6.4 Additional requirements for data communications . 32
6.5 PDS(SR) integration and testing requirements . 33
6.5.1 Hardware integration . 33

61800-5-2  IEC:2007 – 3 –
6.5.2 Software integration . 33
6.5.3 Modifications during integration . 33
6.5.4 Applicable integration tests . 33
6.5.5 Test documentation . 34
7 Information for use . 34
7.1 Information and instructions for safe application of a PDS(SR) . 34
8 Verification and validation . 35
8.1 General . 35
8.2 Verification . 36
8.3 Validation . 36
8.4 Documentation . 36
9 Test requirements . 36
9.1 Planning of tests . 36
9.2 Test documentation . 36
10 Modification . 37
10.1 Objective . 37
10.2 Requirements . 37
10.2.1 Modification request . 37
10.2.2 Impact analysis. 37
10.2.3 Authorization . 37
10.2.4 Documentation . 37

Annex A (informative) Sequential task table . 38
Annex B (informative) Example for determination of PFH . 41
Annex C (informative) Available failure rate databases . 52
Annex D (informative) Fault lists and fault exclusions . 54

Bibliography . 64

Figure 1 – Functional elements of a PDS(SR) . 9
Figure 2 – PDS(SR) development lifecycle . 19
Figure 3 – Architectures for data communication ( a) White channel; b) Black channel) . 33
Figure B.1 – Example PDS(SR) . 41
Figure B.2 – Subsystems of the PDS(SR) . 42
Figure B.3 – Function blocks of subsystem A/B . 43
Figure B.4 – Reliability model (Markov) of subsystem A/B . 46
...