In addition light intensity, timers, daylight harvesting and proximity control, LED’s offer completely new options for controlling the colour of the light. The regulation of the dimming is managed using ballasts with pulse-width modulation.

Colour Change

65 000 colours

Colour shifting in red, green and blue is generally referred to as RGB control. About 65,000 colours can be obtained by mixing and combining these three colours at various strengths. Creating a specific colour requires some type of control unit or interface to a program that communicates via DALI or DMX 512.

DMX vs DALI

More differences than similarities

What type of lighting control should be chosen for a lighting system based on LED lights? There are more differences than similarities between DMX and DALI. DALI was developed with a focus on energy efficient fluorescent-tube lighting in public environments where people work and visit. It has been a very popular alternative considering its limitations, but its simplicity was the key. Multiple control units can control all or part of the electrical loads. In the not-too-distant future, the current DALI standard will be expanded with DALI Colour Control Command.