LIGHTING & CONTROLS The DALI systems enhance sustainability
through energy-efficient digital dimming, presence/absence detection and photocell control in day-lit areas, coupled with operational efficiencies gained through real-time management and monitoring of the lighting network. DALI provides individually addressable
control and monitoring of around 35,500 assets, including lamps, sensors and switches, managed by over 1,000 networked lighting- control modules.
FUTURE-PROOFING THE SYSTEM A further significant advantage of DALI is that many buildings and projects demand open protocol technologies to provide future- proofing, an outcome further supported by using the latest standardized sensors and application controllers. DALI is inherently flexible and future-proof, as any changes to the design of the premises or usage can be dealt with by software reprogramming, rather than rewiring. D4i, a recent DALI extension, also has a
role to play here. The target for D4i is intra-luminaire use, where it facilitates the simple addition or upgrading of sensors and communication nodes to light fixtures. As a result of this luminaire future-proofing, keeping pace with fast-moving developments in digital networking and sensing technologies has never been more straightforward.
THE WIRELESS TREND Although wired systems offer network stability and reliable connectivity, there is growing demand for wireless capabilities. For example, DALI+ is a new brand that denotes DALI over wireless and IP-based networks, and it opens the door to even greater choice and flexibility. Also, standardized gateways can enable wired DALI networks and luminaires to be incorporated into wireless ecosystems such as Zigbee and Bluetooth mesh. Wireless lighting control offers the same basic
functionality as wired systems, providing benefits such as energy cost savings, and comfortable and safe lighting levels. However, specific advantages include greater flexibility, as it becomes possible to locate wireless control devices without the limitation of communications wires (although power wires are, of course, still required for devices such as luminaires). Labour and material
cost savings are further advantages, along with less damage to walls and ceilings. Furthermore, it is
easy to scale wireless lighting-control systems. Ultimately, taking advantage of a state-of-
the-art wired or wireless lighting-control protocol will reduce annual energy usage, particularly where a project leverages occupancy sensor and/or daylighting opportunities. In turn, a building’s carbon footprint will diminish, while maintenance costs will be lower thanks to the close monitoring and control of lighting operation times.
DALI Alliance
www.dali-alliance.org
DALI Lighting Awards entrant Delmatic highlights its use of DALI on CrossRail – Elizabeth Line (
www.dali-alliance.org/awards/winners.html).
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