International Standards and Conformity Assessment for all electrical, electronic and related technologies



Reference EN 50491-4-1:2012
Title 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)
Project Number 23184
Abstract/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.


Current Stage code 6060
Current Stage code date 2012-03-09
Current Stage code deadline 2013-02-20
Deadline date for vote 2012-10-31


Directive(s) LVD (2006/95/EC)
Order Voucher  


IEC Technical Body ISO/IEC/JTC 1/SC25
Reference Document  
ICS 97.120 - Automatic controls for household use
Keywords HBES; Building; Automation; Control; BACS
Note 2012-01-18 - Publication editing allocated to * Supersedes EN 50090-2-3:2005
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2012-03-09 2013-02-20 export to doc file  EN  DE
5099 2012-02-20 2012-03-19  
5060 2012-01-16 2012-02-06 export to doc file  EN
5020 2011-11-11 2012-01-13 export to doc file  EN
4099 2011-09-02    
4060 2011-07-25 2011-12-08 export to doc file  EN
4020 2011-02-18 2011-07-22 export to doc file  EN  DE
3099 2010-12-01 2011-01-28  
1099 2010-12-01    
1000 2010-10-28 2010-11-30  

Implementation Dates

date of Ratification (DOR) (1) 2012-02-20
date of Availability (DAV) (2) 2012-03-09
date of Announcement (DOA) (3) 2012-08-20
date of Publication (DOP) (4) 2013-02-20
date of Withdrawal (DOW) (5) 2015-02-20


Supersedes EN 50090-2-3:2005
Superseded by  
Normative reference (6)  

(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved

(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat

(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level

(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement

(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn

(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.