What is a Dali Control System and How does it work?

What is a DALI control system?

Dali is a worldwide standard in lighting control. DALI stands for Digital Addressable Lighting Interface. It is an International Standard (IEC 62386) lighting control system, providing a single interface for all electronic control gear (light sources) and electronic control devices (lighting controllers).

How does DALI control work?

The big difference: With DALI, ballasts can be linked to a central computer, allowing each one to be controlled independently. DALI systems are currently available for electronic ballasts, transformers, LED's, emergency lights and exit signs in an easy to manage digital lighting control system. 

Each unit is given an address in the DALI system, and the loop is connected to a DALI control device.

What is the Dali voltage?

Ideally the measured voltage should be between 16 and 22.5 V DC. Maximum DALI current per system or subnet is 250 mA and load interface maximum current is 2 mA per unit. The network cable must be mains-rated, with 600 V isolation with a maximum drop of 2 volts along the cable (max 300 metres).