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Topics

DALI-2

Lighting control with DALI — the Digital Addressable Lighting Interface (DALI) is a communication protocol for building lighting applications. It enables communication between lighting control devices such as electronic control gear, brightness sensors, or motion detectors.

DALI system features:

  • Easy reconfiguration when changing room usage
  • Digital data transmission via two-wire line
  • Supports up to 64 single units, 16 groups, and 16 scenes per DALI line
  • Status confirmation of individual lights

  • Configuration data (e.g., group assignments, light scene values, fading times, emergency lighting/system failure level, power-on level) stored in the electronic control gear (ECG)

  • Flexible bus topologies: line, tree, star, or any combination
  • Cable lengths up to 300 meters (depending on cable cross-section)

DALI Explained Simply

The manufacturer-independent DALI standard is defined in IEC 62386 and ensures the interoperability of control gear in digitally controllable lighting systems, such as transformers and power dimmers. This standard replaces the commonly used analog 1–10 V dimmer interface.

The DALI-2 standard is published under IEC 62386. In addition to defining control gear, it also specifies the requirements for control devices — including our DALI Multi-Master Module.

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Building Lighting Control: DALI-2 Applications

The DALI protocol is used in building automation to control individual lights and lighting groups. Assigning individual lights to operating elements and grouping is performed using short addresses. A DALI master can control a line with up to 64 devices. Each device can be assigned to 16 individual groups and 16 individual scenes. Thanks to bidirectional data exchange, not only switching and dimming but also status messages can be transmitted from the operating unit back to the controller.

DALI maximizes flexibility by enabling lighting control to be adapted to new conditions — such as changes in room layout or usage — via software, without requiring hardware modifications. Lighting assignments and groupings can also be adjusted after installation without rewiring. In addition, advanced DALI controllers can be integrated into higher-level controllers and connected to a complete building automation system via bus systems such as KNX®, BACnet, or Modbus®.

Key Benefits:

  • Quick and easy installation of DALI lights using WINSTA® Pluggable Connection System from WAGO

  • Freely programmable applications for maximum project flexibility

  • Connection of digital/analog sensors and actuators, as well as subsystems (e.g., DALI, EnOcean®)

  • Certified to the DALI-2 standard (EN 62386)

  • “Easy mode” for lighting functions without complex programming

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DALI-2 System Graphics