Intelligent lighting control with DALI

In an era where energy efficiency, comfort, and digitalization are key requirements for modern buildings, intelligent lighting control plays a vital role. DALI is a proven standard that is gaining popularity.

What is DALI?

DALI – the Digital Addressable Lighting Interface – is an internationally standardized communication protocol (IEC 62386) developed specifically for the control of lighting systems. It enables digital control and monitoring of individual or groups of luminaires within a lighting system. Unlike traditional analog systems such as 1-10 V or phase-cut dimming, DALI offers bidirectional communication: Luminaires can be controlled as well as actively monitored.

Where is DALI used?

DALI is used wherever lighting must be controlled precisely, efficiently, and flexibly – especially in:

  • Office buildings: for daylight-responsive control, personalized workspace lighting, and energy optimization.
  • Industrial facilities: for automated lighting control in production halls, with a focus on safety and efficiency.
  • Schools and hospitals: with varying use cases and high demands for comfort and reliability.
  • Hotels and event venues: for flexible lighting scenes that can be activated at the push of a button.

 

Components of a DALI system

A functional DALI system has several core components:

1. DALI control device:

Sends digital commands to connected luminaires. It can be a standalone DALI controller or integrated into other control devices – such as the SLK 8, a compact control unit with an integrated DALI interface for up to six DALI connections.

2. DALI power supply:

Supplies the DALI bus with 16 V DC. In many control devices like the SLK 8, the power supply is already integrated.

3. DALI luminaires/control gear (LED drivers):

These receive the control commands. Each luminaire has its own address in the DALI system and can be controlled individually or in groups.

4. Sensors and control elements:

Motion sensors, daylight sensors, or DALI-compatible switches expand system functionality. They provide feedback and enable automated processes.

5. Bus wiring:

The DALI bus consists of two wires (typically part of a 5×1.5 mm² installation cable, with two wires used for DALI) and connects all devices. There are no restrictions on topology – line, star, or tree structures are all possible.

How to set up a DALI lighting system

A DALI system is implemented in a few structured steps:

1. Planning

Define the number of luminaires, groups, and control points. A DALI line can accommodate up to 64 addresses (luminaires or devices).

2. Wiring

All devices are connected in parallel to the DALI bus line. The bus line can be up to 300 meters long (with a 1.5 mm² cross-section).

3. Commissioning

With a software or a DALI configuration device (e.g., the SLK 8 or a USB interface), addresses are assigned, groups defined, and scenes programmed.

4. Integration and automation

Motion and light sensors are integrated, automation rules are created (e.g., light only when motion is detected, daylight control), and the system can be connected to a building management system if desired.

SLK 8 – Easy DALI integration

One of the easiest ways to integrate DALI into your lighting systems is to use our SLK 8. This is a modular control unit with an integrated DALI interface for up to six connections. It enables you to:

  • Directly control multiple DALI lighting groups.
  • Eliminate separate DALI controllers or power supplies.
  • Seamlessly integrate into existing automation systems.
  • Simplify commissioning with preconfigured DALI parameters.

This makes the SLK 8 an ideal solution for projects where comfort, efficiency, and reliability are top priorities.

Takeaway

DALI is more than just an intelligent lighting control – it is a powerful system for modern, energy-efficient, and flexible lighting. The combination of standardized components, open architecture, and easy scalability makes it the ideal choice for future-proof building projects.

Planning a project with DALI or want to learn more about the SLK 8?

We are happy to support you with selection, planning, and integration – get in touch with us!