DALI-2 Protocol-Based Intelligent Dimming Power Supply: Giving Every Light An "ID"

In previous articles, we briefly introduced mainstream dimming technologies such as TRIAC, 0-10V, and DALI-2. This issue will delve into the DALI-2 dimming protocol and explore why it is favored in high-end applications like commercial complexes, luxury hotels, and smart buildings.

I. Understanding the DALI-2 Protocol

DALI-2 is an upgraded version of the DALI (Digital Addressable Lighting Interface) protocol. Developed by the DiiA Alliance based on the IEC 62386 international standard, it enhances interoperability, scalability, and standardization in lighting systems.

II. Intelligent Advancements of DALI-2

Unique Address for Each Fixture

The DALI-2 protocol assigns a unique digital address to every connected fixture, enabling individual addressing and control. For example, users can adjust the brightness of a fixture with address "15" without affecting others. This precision is ideal for commercial spaces, hotels, and offices.

Standardization & Interoperability

DALI-2 mandates certification to ensure compatibility between devices from different manufacturers. This reduces integration complexity and improves system stability—critical for high-end hotels and smart buildings that rely on multi-vendor ecosystems.

Group Control

DALI-2 supports flexible grouping and scene settings, allowing fixtures to be assigned to up to 16 logical groups. This simplifies centralized management for diverse scenarios in commercial complexes or luxury hotels.

Two-Way Communication: Status Feedback & Fault Alerts

DALI-2 enables fixtures to report real-time data (brightness, energy consumption, fault codes) to controllers. For instance, a faulty fixture triggers an alert with its exact address, streamlining maintenance and enhancing reliability.

III. Suretron DALI-2 Intelligent Dimming Power Supply

Leveraging DALI-2’s strengths, Suretron introduces its DALI-2 Intelligent Dimming Power Supply, which combines advanced protocol features with enhanced performance. It has been deployed in prestigious projects like the Marina Bay Sands Hotel (Singapore) and Zhongguancun International Innovation Center.

High-Precision Dimming

The Suretron DALI-2 power supply achieves smooth dimming from 0.1% to 100% with flicker-free and jitter-free performance, dynamically adjusting brightness based on needs.

Group Control Capability

Users can assign fixtures to logical groups for centralized control. Preset scenes (e.g., office mode, conference mode) can be activated instantly for optimal lighting environments.

NFC Intelligent Programming

The Suretron DALI-2 power supply supports NFC-based address configuration. Its constant-voltage series also features adjustable output voltage to eliminate brightness drop at the end of LED strips.

Real-Time Status Monitoring & Fault Alerts

With two-way communication, the power supply reports real-time data (brightness, energy use, fault codes). Faults trigger instant alerts for rapid maintenance, boosting system uptime.

Broad Compatibility

Compliant with DALI-2 standards and DiiA-certified, the Suretron power supply ensures seamless interoperability with devices from all DALI-2-certified manufacturers.

Efficient Cooling & Extended Lifespan

Advanced thermal management ensures stable operation under heavy loads. Premium components and materials extend lifespan while reducing maintenance costs.