What is a DALI line?

What is a DALI Line?

A DALI Line is a network of up to 64 DALI light sources (ballasts, transformers, emergency fittings etc.), addressed from 0 to 63. DALI ballasts are controlled by commands that can be sent to individual ballasts, to groups of ballasts or broadcast to all ballasts on the line

A DALI ballast is an intelligent device that can be configured to remember its power-on level, maximum level, minimum level, system failure level, fade rate and fade time. A ballast can belong to up to 16 groups and store up to 16 preset scene levels.

A true DALI lighting system can report the level of every ballast and the status of every ballast and lamp. It can automatically test emergency fittings and report their status. True DALI systems also enable controllers from multiple vendors to be used on the DALI Line.

What are the components of a DALI Line?

A DALI Line consists of the following components:

  • One or more DALI Power Supplies to a maximum current of 250mA
  • From one to sixty-four DALI ECGs ie. ballasts, transformers, inverters, relay modules, EXIT signs etc.
  • One or more DALI ECDs ie. Line controller, group controller, sensor, switchplate etc.

Refer to Clipsal’s schematic diagrams for more information.