The e-magazine for KNX home & building control

Siemens Facilitates Implementation of Human Centric Lighting

  • New DALI-2 certification for Siemens Desigo PXC3 and KNX gateway N 141 as well as switch/dim actuator N525D11
  • Certification ensures interoperability in multi-vendor environments
  • Lighting based on circadian rhythm helps improve health conditions in indoor environments

Siemens Smart Infrastructure’s building products KNX/DALI gateway N 141 and the switch/dim actuator 2x DALI Broadcast N 525D11 as well as the Desigo PXC3 controller were recently certified under the new DALI-2 communication protocol standard for lighting in buildings. DALI-2 is an update to the original “Digital Addressable Lighting Interface (DALI)” protocol and facilitates interoperability and control for LED drivers. The newly certified Siemens products will help implement state-of-the-art human centric lighting (HCL) applications also in multi-vendor environments in order to increase concentration, productivity, and well-being indoors.  

Moreover, such lighting applications seamlessly integrate into holistic building automation systems provided by Siemens which combine heating, ventilation, air conditioning, and shading. Customers can choose between solutions based on either Desigo or KNX, according to their individual installation requirements. 

‘Tunable white’  functionality to imitate natural daylight

Dynamic colour temperatures create a pleasant room atmosphere and contribute to the occupants’ well-being. Designed to promote this goal, the HCL concept for interior spaces specifies using the correct colour temperature and illumination at the right time. Following this approach, the KNX building automation products from Siemens provide infinitely variable colour temperature control thanks to the ‘tunable white’ functionality. This makes it possible to create any shade of white light, from warm to cold, and allows easy implementation of daylight simulations. In technical terms, the colour temperature of the light emitted by the luminaires is adjusted from approximately 2700K in the morning to approximately 6500K at midday and then lowered again to 2700K in the evening. By reducing the blue component of the light in the evening, the body is prepared for the night ahead.

www.siemens.com/smart-infrastructure

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