EN 50491-4-1:2012

General requirements for Home and Building Electronic Systems (HBES) and Building Automation and Control Systems (BACS) - Part 4-1: General functional safety requirements for products intended to be integrated in Building Electronic Systems (HBES) and Building Automation and Control Systems (BACS)

This European Standard sets the requirements for functional safety for HBES/BACS products and systems, a multi-application bus system where the functions are decentralised, distributed and linked through a common communication process. The requirements may also apply to the distributed functions of any equipment connected in a home or building control system if no specific functional safety standard exists for this equipment or system. The functional safety requirements of this European Standard apply together with the relevant product standard for the device if any. This European Standard is part of the EN 50491 series of standards. This European Standard does not provide functional safety requirements for safety-related systems.

Allgemeine Anforderungen an die Elektrische Systemtechnik für Heim und Gebäude (ESHG) und an Systeme der Gebäudeautomation (GA) - Teil 4-1: Anforderungen an die funktionale Sicherheit für Produkte, die für den Einbau in ESHG /GA vorgesehen sind

Exigences générales relatives aux systèmes électroniques pour les foyers domestiques et les bâtiments (HBES) et aux Systèmes de Gestion Technique du Bâtiment (SGTB) - Partie 4-1: Exigences générales de sécurité fonctionnelle pour les produits destinés à être intégrés dans les systèmes HBES/SGTB

La présente norme européenne détermine les exigences de sécurité fonctionnelle pour les produits et les systèmes HBES/SGTB, un système de bus multi-application où les fonctions sont décentralisées, distribuées et reliées par l'intermédiaire d'un processus commun de communication. Ces exigences peuvent également s'appliquer aux fonctions distribuées de tout matériel connecté dans un système de contrôle pour foyer domestique ou bâtiment, si aucune norme de sécurité fonctionnelle spécifique n'existe pour ce matériel ou système. Les exigences de sécurité fonctionnelle de la présente norme européenne s'appliquent conjointement avec la norme de produit correspondante du dispositif s'il y a lieu. La présente norme européenne fait partie de la série de norme EN 50491.. La présente norme européenne ne fournit pas d'exigences de sécurité fonctionnelle pour les systèmes relatifs à la sécurité.

Splošne zahteve za stanovanjske in stavbne elektronske sisteme (HBES) in stavbne sisteme avtomatizacije in nadzora (BACS) - 4-1. del: Zahteve splošne funkcionalne varnosti za proizvode, ki so namenjeni za vgradnjo v HBES in BACS

Ta evropski standard določa zahteve funkcionalne varnosti za stanovanjske in stavbne elektronske sisteme (HBES)/stavbne sisteme avtomatizacije in nadzora (BACS) ter z njimi povezane proizvode, tj. večaplikacijski sistem vodil, v katerem so funkcije decentralizirane, distribuirane in povezane prek skupnega komunikacijskega procesa. Zahteve se lahko uporabljajo tudi za porazdeljene funkcije katere koli opreme, priključene na stanovanjski ali stavbni sistem nadzora, če za to opremo ali sistem ne obstaja poseben standard za funkcionalno varnost. Zahteve funkcionalne varnosti iz tega evropskega standarda se uporabljajo skupaj z ustreznim standardom za napravo, če obstaja. Ta evropski standard je del skupine standardov EN 50491. Ta evropski standard ne določa zahtev funkcionalne varnosti za sisteme, povezane z varnostjo.

General Information

• Status: Withdrawn
• Publication Date: 08-Mar-2012
• Withdrawal Date: 19-Feb-2015
• ICS: 97.120 - Automatic controls for household use
• Technical Committee: CLC/TC 205 - Home and Building Electronic Systems (HBES)
• Drafting Committee: ISO/IEC/JTC 1/SC25 - ISO/IEC_JTC_1/SC25
• Directive: 2006/95/EC - Directive 2006/95/EC of the European Parliament and of the Council of 12 December 2006 on the harmonisation of the laws of Member States relating to electrical equipment designed for use within certain voltage limits (codified version)
• Directive: 2014/35/EU - Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits
• Directive: 2014/53/EU - Directive 2014/53/EU of The European Parliament and of the Council of 16 April 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of radio equipment and repealing Directive 1999/5/EC
• Ref Project: SIST EN 50491-4-1:2012 - General requirements for Home and Building Electronic Systems, HBES and Building Automation and Control Systems (BACS) - Part 4-1: General functional safety requirements for products intended to be integrated in Building Electronic Systems (HBES) and Building Automation and Control Systems (BACS)

Relations

• Replaces: EN 50090-2-3:2005 - Home and Building Electronic Systems (HBES) - Part 2-3: System overview - General functional safety requirements for products intended to be integrated in HBES
• Effective Date: 29-Jan-2023
• Replaced By: EN IEC 63044-4:2021 - Home and building electronic systems (HBES) and building automation and control systems (BACS) - Part 4: General functional safety requirements for products intended to be integrated in HBES and BACS
• Effective Date: 02-May-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2012
1DGRPHãþD
SIST EN 50090-2-3:2005
Splošne zahteve za stanovanjske in stavbne elektronske sisteme (HBES) in
stavbne sisteme avtomatizacije in nadzora (BACS) - 4-1. del: Zahteve splošne
funkcionalne varnosti za proizvode, ki so namenjeni za vgradnjo v HBES in BACS
General requirements for Home and Building Electronic Systems, HBES and Building
Automation and Control Systems (BACS) - Part 4-1: General functional safety
requirements for products intended to be integrated in Building Electronic Systems
(HBES) and Building Automation and Control Systems (BACS)
Allgemeine Anforderungen an die Elektrische Systemtechnik für Heim und Gebäude
(ESHG) und an Systeme der Gebäudeautomation (GA) - Teil 4-1: Anforderungen an die
funktionale Sicherheit für Produkte, die für den Einbau in ESHG / GA vorgesehen sind
Exigences générales relatives aux systèmes électroniques pour les foyers domestiques
et les bâtiments (HBES) et aux Systèmes de Gestion Technique du Bâtiment (SGTB) -
Partie 4-1: Exigences générales de sécurité fonctionnelle pour les produits destinés à
être intégrés dans les systèmes HBES/SGTB
Ta slovenski standard je istoveten z: EN 50491-4-1:2012
ICS:
97.120 Avtomatske krmilne naprave Automatic controls for
za dom household use
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 50491-4-1
NORME EUROPÉENNE
March 2012
EUROPÄISCHE NORM
ICS 97.120 Supersedes EN 50090-2-3:2005

English version
General requirements for Home and Building Electronic Systems (HBES)
and Building Automation and Control Systems (BACS) -
Part 4-1: General functional safety requirements for products intended to
be integrated in Building Electronic Systems (HBES) and Building
Automation and Control Systems (BACS)

Exigences générales relatives aux Allgemeine Anforderungen an die
systèmes électroniques pour les foyers Elektrische Systemtechnik für Heim und
domestiques et les bâtiments (HBES) et Gebäude (ESHG) und an Systeme der
aux Systèmes de Gestion Technique du Gebäudeautomation (GA) -
Bâtiment (SGTB) - Teil 4-1: Anforderungen an die funktionale
Partie 4-1: Exigences générales de Sicherheit für Produkte, die für den Einbau
sécurité fonctionnelle pour les produits in ESHG / GA vorgesehen sind
destinés à être intégrés dans les
systèmes HBES/SGTB
This European Standard was approved by CENELEC on 2012-02-20. 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 CEN-CENELEC Management Centre or to any CENELEC member.

This European Standard exists in three official versions (English, French, 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 CEN-CENELEC Management Centre has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia,
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, Turkey and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2012 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50491-4-1:2012 E
Contents
Foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references. 5
3 Terms and definitions. 5
4 General requirements . 8
4.1 General . 8
4.2 Method of establishment for the requirements . 8
5 Requirements for functional safety . 10
5.1 General . 10
5.2 Power feeding . 10
5.3 Environment . 11
5.4 Life time . 11
5.5 Reasonably foreseeable misuse . 11
5.6 Software and communication . 12
5.7 Remote operations . 13
Annex A (informative) Example of a method for the determination of safety integrity levels . 15
Annex B (informative) Hazards and development of necessary functional safety requirements . 17
Annex C (informative) Some examples of non safety related HBES /BACS applications . 23
Bibliography . 25
Figure
Figure A.1  Risk reduction - General concept . 15
Tables
Table 1  Requirements for avoiding inadvertent operations and possible ways to achieve them . 14
Table A.1  Example of risk classification of accidents . 16
Table A.2  Interpretation of risk classes . 16
Table B.1 . 17

– 3 – EN 50491-4-1:2012
Foreword
This document (EN 50491-4-1:2012) has been prepared by CLC/TC 205, "Home and Building Electronic
Systems (HBES)".
The following dates are fixed:
• latest date by which this document has to be
(dop) 2013-02-20
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards
(dow) 2015-02-20
conflicting with this document have to
be withdrawn
This document supersedes EN 50090-2-3:2005.
EN 50090-2-3:2005:
- 3 Definitions
- 5.6 Software and communication
EN 50491-4-1 is part of the EN 50491 series, which comprises the following parts under the generic title
General requirements for Home and Building Electronic Systems (HBES) and Building Automation and
Control Systems (BACS):
- Part 1: General requirements
- Part 2: Environmental conditions
- Part 3: Electrical safety requirements
- Part 4-1: General functional safety requirements for products intended to be integrated in Building
Electronic Systems (HBES) and Building Automation and Control Systems (BACS)
- Part 5-1: EMC requirements, conditions and test set-up
- Part 5-2: EMC requirements for HBES/BACS used in residential, commercial and light industry
environment
- Part 5-3: EMC requirements for HBES/BACS used in industry environment
- Part 6-1: HBES installations  Installation and planning
- Part 6-3 HBES installations  Assessment and definition of levels [Technical Report]
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent rights.
This standard covers the Principle Elements of the Safety Objectives for Electrical Equipment Designed for
Use within Certain Voltage Limits (LVD - 2006/95/EC)

Introduction
Homes buildings and similar environments require various electronic devices for several application. These
devices when linked via a digital transmission network are called Home and Building Electronic System
(HBES) or Building Automation and Control System (BACS).
Examples of HBES/BACS applications are the management, of lighting, heating, energy water, fire alarms,
blinds, different forms of security, etc.
A HBES/BACS network may be based on different communication media as power line, twisted pair, coax
cable, radio frequency or infrared and may be connected to external networks like telephone, broad band,
television, power supply networks and alarm networks.
Several standards of this series serve to implement public interest matters, primarily as reflected in European
Commission Directives.
HBES/BACS products integrated in a HBES/BACS should be safe for the use in intended applications.
This European Standard specifies the general functional safety requirements for HBES/BACS following the
principles of the basic standard for functional safety EN 61508.
This European Standard identifies functional safety issues related to products and their installation. The
requirements are based on a risk analysis in accordance with EN 61508.
The intention of this European Standard is to allocate, as far as possible, all safety requirements for
HBES/BACS products in there life cycle.
This European Standard only addresses HBES/BACS products.
This European Standard is addressed to committees that develop or modify HBES /BACS product/system
standards or, where no suitable HBES/BACS product standards addressing functional safety exist, to
product manufacturers.
HBES/BACS products in this European Standard are for non-safety related applications. Additional
requirements for safety related HBES/BACS according to EN 61508 will be defined in part 4-2 of the
EN 50491 series.
– 5 – EN 50491-4-1:2012
1 Scope
This European Standard sets the requirements for functional safety for HBES/BACS products and systems,
a multi-application bus system where the functions are decentralised, distributed and linked through a
common communication process. The requirements may also apply to the distributed functions of any
equipment connected in a home or building control system if no specific functional safety standard exists for
this equipment or system.
The functional safety requirements of this European Standard apply together with the relevant product
standard for the device if any.
This European Standard is part of the EN 50491 series of standards.
This European Standard does not provide functional safety requirements for safety-related systems.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
EN 50491-2 General requirements for Home and Building Electronic Systems (HBES) and
Building Automation and Control Systems (BACS)  Part 2: Environmental
conditions
EN 50491-3 General requirements for Home and Building Electronic Systems (HBES) and
Building Automation and Control Systems (BACS)  Part 3: Electrical safety
requirements
EN 50491-5 (all parts) General requirements for Home and Building Electronic Systems (HBES) and
Building Automation and Control Systems (BACS)
EN 61508 (all parts) Functional safety of electrical/electronic/programmable electronic safety-related
systems
EN 61709:1998 Electronic components  Reliability  Reference conditions for failure rates and
stress models for conversion (IEC 61709:1996)
EN ISO 9000 Quality management systems  Fundamentals and vocabulary (ISO 9000)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
architecture
specific configuration of hardware and software elements in a system
[SOURCE: EN 61508-4:2010, definition 3.3.4]
3.2
authentication
means for certifying that the entity sending a message is what or who it purports to be and confirmation that
the message is identical to that which was sent
3.3
authorisation
mechanism to ensure that the entity or person accessing information, functions or services has the authority
to do so
3.4
disturbed communication
communication in which for any reason a message being communicated is incomplete, truncated, contains
errors or has the correct format but delivers information which is outside the range of e
...