Product category:
Heating Systems, Controls and Management
News Release from: KNX UK | Subject: Advanced lighting controls
Edited by the Buildingtalk Editorial
Team on 14 January 2008
KNX provides the platform at Terminal 5
KNX technology (formerly EIB) is helping to bring advanced lighting controls to Heathrow's Terminal 5.
Supplied by intelligent buildings controls systems integrator Andromeda Telematics (ATL), KNX equipment is helping to manage the lighting system and will provide passengers with a well-lit and safe environment In designing the lighting system, the requirement was to develop a fully automated solution that could be used efficiently and that would guide and assist passengers whilst being controlled and monitored from building management systems
This article was originally published on Buildingtalk on 22 Aug 2008 at 8.00am (UK)
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The lighting system had to comply with Building Regulation Part L requirements for energy efficiency.
A KNX system is providing the lighting system for the rail terminus, the main concourse building and the TTS passenger link providing access between the main concourse building and the two other buildings used for boarding.
It is also providing the lighting system to other areas of T5, including the multi-storey car park and the energy centre, which supplies heating and chilled water to T5.
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Lighting is also being supplied to the air traffic control tower.
To provide the level of control required by BAA, a DALI (Digital Addressable Lighting Interface) lighting control system was designed and installed.
Whilst DALI can provide scene setting and fault reporting functions, it had not been developed to communicate directly with building management systems.
However it has been successfully integrated with KNX, enabling the two systems to communicate freely.
KNX's open platform technology then allowed it to be incorporated it into the building management system being used on T5.
As a result of developing this gateway, staff can now monitor the lighting system throughout the terminal and can quickly identify any faults through a central building management system, including the precise location of a fault.
This will help ensure that all areas of the terminal are constantly well lit and easy to maintain.
As well as the mains lighting, monitoring capabilities have also been provided for the terminal's escalators, travelators, low-voltage supplies, life-safety equipment and toilets for the disabled.
The remit for the rail station was to reduce the level of energy required for lighting, whilst ensuring sufficient illumination for passengers.
The KNX and DALI lighting control system had to be integrated into the rail station's Supervisory Control And Data Acquisition (SCADA) building management system, which provides reporting for station staff.
DALI is being used to light all back-of-house areas of the station, including the staff room and ticket offices.
As the system is fully automated, lights will turn off as staff exit rooms, helping to reduce energy consumption and costs.
The system can also monitor emergency lighting circuits.
As the train station has been designed to let in as much natural light as possible, it was important that the system had daylight-saving capabilities.
This meant the lighting system had to be able to respond to external weather conditions so that the required amount of artificial light would be adjusted, according to the amount of natural light entering the station and the interchange.
In all over 400 of KNX actuators to control the lighting in the terminal have been installed, push-button interfaces, which enable localised manual control of the lighting system in some areas.
One of the more innovative ways the push button interfaces are used in as an override to the automated lighting controls in the concourse area.
During late nights and early mornings, when the airport is used less, often, the lighting system will automatically reduce illumination levels.
If passengers arrive from a night flight, for example, the lighting system, can be over-ridden to illuminate the concourse area, switching on only the lighting required to guide passengers to baggage and customs areas.
KNX is the new designation of EIB (European Installation Bus).
The KNX standard is a system for building and home control and automation which is fully compliant to EN 50090, the European Standard for building and home Electronic Systems.
The KNX registration mark is the guarantee of conformance of any product to EN 50090.
KNX UK promotes KNX products and services available from its member companies in the UK.
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