IEC 62733:2015
(Main)Programmable components in electronic lamp controlgear - General and safety requirements
Programmable components in electronic lamp controlgear - General and safety requirements
IEC 62733:2015 provides general and safety requirements for programmable components used in products covered by IEC 61347. The requirements of this standard are only applicable to the programmable components (including its embedded software) in the electronic lamp controlgear. For other electric/electronic circuits and their components in the electronic lamp controlgear, the requirements of IEC 61347 series apply.
The contents of the corrigendum of August 2017 have been included in this copy.
Composants programmables dans les appareillages électroniques de lampes - Exigences générales et exigences de sécurité
L'IEC 62733:2015 définit les exigences générales et les exigences de sécurité des composants programmables utilisés dans les produits couverts par l'IEC 61347. Les exigences de la présente norme s'appliquent uniquement aux composants programmables (et leurs logiciels intégrés) des appareillages électroniques de lampes. Pour les autres circuits électriques/électroniques et leurs composants dans les appareillages électroniques de lampes, les exigences de la série IEC 61347 s'appliquent.
Le contenu du corrigendum d'août 2017 a été pris en considération dans cet exemplaire.
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IEC 62733 ®
Edition 1.0 2015-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Programmable components in electronic lamp controlgear – General and safety
requirements
Composants programmables dans les appareillages électroniques de lampes –
Exigences générales et exigences de sécurité
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IEC 62733 ®
Edition 1.0 2015-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Programmable components in electronic lamp controlgear – General and safety
requirements
Composants programmables dans les appareillages électroniques de lampes –
Exigences générales et exigences de sécurité
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.140.99 ISBN 978-2-8322-2668-1
– 2 – IEC 62733:2015 © IEC 2015
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 General requirements . 10
5 Risk assessment . 11
5.1 General . 11
5.2 Specification of tolerable risk . 11
5.3 Documentation . 11
6 Requirements for abnormal operating and fault conditions . 12
6.1 Abnormal operating and fault conditions in the application of the electronic
lamp controlgear . 12
6.2 Fault conditions for the programmable component . 12
7 Requirements for software . 13
8 Requirements for EMC immunity. 13
Annex A (normative) Software evaluation . 15
A.1 General . 15
A.2 Protective programmable components using software . 15
A.3 Terms and definitions . 15
A.4 Requirements for the architecture . 22
A.5 Measures to avoid errors . 30
Annex B (informative) FTA and FMEA analysis . 34
B.1 FTA results . 34
B.2 FMEA results . 35
Annex C (informative) Guidance on the identification of a protective programmable
component . 37
Annex D (normative) Risk classification . 38
D.1 General . 38
D.2 Frequency of occurrence. 38
D.3 Risk severity . 38
D.4 Classification of risks . 39
Bibliography . 40
Figure B.1 – Example of a fault tree diagram . 35
Table A.1 – General fault/error conditions . 24
Table A.2 – Specific fault/error conditions . 26
Table A.3 – Semi-formal methods . 31
Table A.4 – Software architecture specification . 31
Table A.5 – Module design specification . 32
Table A.6 – Design and coding standards . 33
Table A.7 – Software safety validation . 33
Table D.1 – Frequency definition and categorization (from IEC 61508-5:2010 Annex C) . 38
Table D.2 – Risk severity definitions (from IEC 61508-5:2010, Annex C) . 38
Table D.3 – Safety risk classification . 39
– 4 – IEC 62733:2015 © IEC 2015
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
PROGRAMMABLE COMPONENTS
IN ELECTRONIC LAMP CONTROLGEAR –
GENERAL AND SAFETY REQUIREMENTS
FOREWORD
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