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Why total light management holds the greatest opportunity for energy savings in commercial buildings
DALI is the only recognized open standard mentioned I can see from this article.
Why is it lumped in some nefarious category "Two-wire, low-voltage digital control for fluorescent dimming (DALI specifications or similar designs)." ? Please let me know what other free topology two wire open protocol systems are out there to compare?
Compared to (three wire) EIA-485 based proprietary or open (article leaves undefined) DALI is a free topology system and is significantly better than 0-10v. It shouldn't even be compared with 0-10v systems because the only comparison is that both provide dimming. Additionally, the free topology and powered multi-sensors make it a superior installation to EIA-485 and 0-10v systems by far. No contest.
"A number of lighting equipment manufacturers offer a digital dimming system with the same general capabilities as a DALI system; however, they may use their own communication protocols and associated hardware to deliver a complete lighting system. " --- A serious understatement. These other "similar" systems deliver the goal with locked down single vendor solutions. Therefore, not really close to the "same general capabilities" because there is no ability for an open procurement and design of your lighting system.
US HVAC systems seem years ahead of lighting control systems delivered in the US market in regards to use of open protocols. The US is even years behind the world adopting DALI.
What I'd like to see is better comparisons made because equating something like DALI to proprietary and 0-10v systems at the same level is maddening.
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