Control options added to DALI-2 certification
Wednesday, 20 October 2021
colour-control-options-added-to-dali-2-certification-programDALI-2 certification requires the product to pass a comprehensive set of tests
USA - Additional methods to control the colour output of light sources have been added to the DALI-2 certification programme, which is operated by the DALI Alliance. DALI-2 certification is built on open, international standards and is focused on device interoperability, backed by independent verification of test results.
The DALI Alliance has added DALI-2 tests for LED drivers and other control gear that use two colour types, known as RGBWAF and xy. These DALI-2 options are now available alongside colour type Tc (widely known as tunable white).
Colour type RGBWAF allows simple control of up to six individual channels of colour (red, green, blue, white, amber and free colour). For more sophisticated control, colour type xy allows precise and repeatable selection of the colour coordinates from the CIE colour space chromaticity diagram. Colour type Tc allows control of the correlated colour temperature (CCT) along the black-body line, from warm white to cool white. Colour types Tc and xy allow calibration of the light-source and control-gear combination, enabling higher colour accuracy.
“The combination of colour control and the standardized DALI dimming curve provide a powerful tool for lighting designers and other users. DALI scenes allow recall and smooth fading of colour as well as brightness,” says Paul Drosihn, DALI Alliance general manager. “The new options for colour control are an important addition to the DALI-2 programme and strengthen market confidence in the interoperable behaviour of DALI lighting-control devices.”
DALI-2 certification requires the product to successfully pass a rigorous and comprehensive set of tests based on the international standard IEC 62386. The DALI Alliance independently verifies the test results, and then lists each certified product in its online product database, providing public traceability.

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