DALI-2: Standardized, Interoperable Components and Smart Luminaires
DALI-2 is extending and enhancing the strengths of DALI as a dedicated, standardized protocol for digital lighting control. For many years, the lighting community has installed DALI systems that are robust, scalable, cost-effective, reliable and flexible. But now, for the first time, DALI-2 has brought standardization to products such as sensors and other input devices, as well as application controllers, which are the “brains” of a DALI system. DALI-2 now extends to all devices in a lighting-control system. Furthermore, with its rigorous testing and verification procedures, the DALI-2 certification program from DiiA brings the promise of significantly-improved interoperability of products from different vendors.
This presentation will describe the latest updates to the international DALI standard, IEC 62386, and the ongoing development of the DALI-2 certification program. At the time of writing, over 160 DALI-2 certified products are listed in the DiiA online Product Database, from a wide range of DiiA member companies. We will explain how DiiA is creating new test sequences to allow companies to verify product compliance with the different parts of IEC 62386, which cover different product types and features. These include, for example, control gear for self-contained emergency lighting; control gear enabling colour control; and various input devices such as sliders, push-buttons and occupancy and light-level sensors.
The presentation will also address some of the common misconceptions about DALI and DALI-2. We will look at the advantages of using DALI in different lighting scenarios, backed by a range of project case studies. We will also look ahead to new parts of the DALI standard that are in progress, including DALI wireless.
DiiA is also actively developing new specifications. One example is for smart, connected LED luminaires that use an internal DALI bus to facilitate the incorporation of sensors and/or wireless communication modules. The internal LED driver used in this application can provide power to some devices on the DALI bus. Also, the LED driver uses a new data model to provide information – such as energy metering and operational diagnostics – in a standardized format that builds on the DALI protocol. This enables reporting of luminaire-specific data, via the wireless link, to a centralized server. Also, where the sensor/transceiver is attached to the luminaire using a standardized socket, the modules can be exchanged in the field, so that the luminaire can be upgraded as new technologies emerge, offering flexibility and future-proofing.