EN 50491

EN 50491

Subject: 
Home
Sub-subject: 
Domotics and home automation
Reference: 
EN 50491
Title: 
General requirements for Home and Building Electronic Systems (HBES) and Building Automation and Control Systems (BACS)
Kind of resource: 
Standard
Description: 
The standard consists of 11 documents that provide requirements for Home and Building Electronic Systems (HBES) and Building Automation and Control Systems (BACS) regarding general requirements, eEnvironmental conditions, electrical safety, general functional safety for products intended to be integrated in Building Electronic Systems (HBES) and Building Automation and Control Systems (BACS), EMC requirements, HBES installations -and Smart Metering. The EN 50491 series of standards is entitled “General requirements for Home and Building Electronic Systems (HBES) and Building Automation and Control Systems (BACS)” and contains requirements for HBES devices including environmental performance, safety, functional safety, EMC, and desing, planning and installation. The EN 50491 series is in the process of replacing the existing EN 50090 series of standards entitled “Home and Building Electronic Systems (HBES)” covering the areas system overview, aspects of application, media independent layers, media and media dependent layers, interfaces, system management, conformity assessment of products and installation requirements. EN 50491-3:2009 provides the electrical safety requirements for all devices connected to HBES/BACS. This European Standard is applicable to – operator stations and other human system interface devices, – devices for management functions, – control devices, automation stations and application specific controllers, – field devices, – cabling and interconnection of devices. This European Standard covers the following requirements and compliance criteria: – protection from hazards in the device; – protection from overvoltages on the network; – protection from touch current; – protection from hazards caused by different type of circuits; – protection of the communication wiring from overheating caused by excessive current. EN 50491-4-1:2012 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. EN 50491-5-1:2010 sets the minimum level of EMC performance for HBES/BACS products intended to be connected to an HBES/BACS system. A set of devices connected to perform a stand alone application is not considered to be an HBES/BACS system and therefore are outside the scope of this European Standard. This European Standard provides the general performance requirements and test setups for EMC for all products connected to HBES/BACS. This connection can be wired (e.g. communication cable, power line) or wireless (e.g. radiofrequency, infrared). This European Standard is applicable (but not limited) to – operator stations and other human system interface devices, – devices for management functions, – control devices, automation stations and application specific controllers, – field devices and their interfaces, – cabling and interconnection of devices, – dedicated devices for engineering and commissioning tools for HBES/BACS CLC/TR 50491-6-3:2011 establishes the general rules for assessing HBES installations, according to its complexity and energy performance. This Technical Report applies to – household HBES installation, from and up to the connection point with the utility (i.e. electricity, telecommunications, tele-service, water, gas, security and similar), – HBES installations that include applications related to automation and integrated control of electrical and/or electronic devices, – the networks used for the HBES interconnection regardless of the transmission media used for their communications, – new HBES installations, retrofitting and enlargement of existing installations.
Keywords: 
building, home, automation, systems, BACS, HBES
Organisation: 
CENELEC