FEATURE: LIGHTING CONTROL
and fixture – and DALI is the best known standard within this area – those between systems, such as the intelligent building protocol BACnet, and those that provide RF communication in the building,” adds Guy Simmonds, UK sales director at Lutron. “When choosing a light control solution, it is vital to ensure that it is robust on all three levels. The area that is most vulnerable is the RF protocol, which is why Lutron developed its bespoke RF technology, Clear Connect.” “The most popular protocols
for white light/single colour LED dimmers that are generally trailing edge or leading edge are 1-10V or DALI,” claims Coles. “For RGB and colour mixing units, it’s typically DMX and we are seeing DMX being used for situations where low dimming curves in both directions are required on high-powered white light for applications such as cinemas and offices. DALI isn’t suitable for colour- changing products as it’s not fast enough, although it can be used for fixed colour.” “From an entertainment lighting perspective, the evolution has moved from
analogue control in the past via DMX512 to IP-based protocols,” adds Larsen. “For a couple of years, Art-Net kept the lead due to the lack of a global standard, but we now have a global standard in ACN (Architecture for Control Networks) taking over. ACN is mostly seen so far as the sub- part sACN (streaming) which includes the core control parts. DMX512 will still be widely used, as the protocol is much simpler and very suitable for smaller applications. It is still being improved, most recently with the addition of RDM (Remote Device Management) allowing users to configure/address devices remotely as well as receiving feedback.”
IT’S ABOUT THE APPLICATION It seems there are two key takeaways here. One is that there is no single, dominant- lighting control technology – there are many, and each is typically preferred for a given application. There are important differences between domestic/ consumer, commercial and entertainment. The second is that the world of lighting control is a dynamic one, as
FULL AVL INSTALLS 18-PIECE CUECORE SYSTEM AT JAARBEURS
Visual Productions' Dutch distributor Full AVL recently completed an 18-piece (36- universe) CueCore installation at the Jaarbeurs conference centre in Utrecht. Full AVL's customer,
Controllux, requested help from the distributor with finding a complete control solution for the new Supernova meeting hub at the Jaarbeurs, which comprises four conference rooms. Full AVL specified two Linux-based CueluxPro lighting control servers; 18 CueCores; two
IoCores; and seven B-Stations. All items are spread out
over the conference suites in order to be close to the DMX controlled lighting, and are connected and powered by centralised PoE switches. All light fixtures are controlled by DMX via the CueluxPro software suite. CueluxPro renders the two-dimensional pixel mapping effects for the large matrix wall in the foyer, which is made up of 240 x 8 RGB pixels. Other real-time matrix effects are generated for an array of 1,500 RGB
pixels inside one of the rooms. The LED lines, downlights, fluorescents and other fixtures in the venue are controlled by CueluxPro as well, bringing the total number of DMX channels to 6,270. The installation also
facilitates DMX override for live events. There are three areas with the option to plug in a DMX desk. CueluxPro manages the scenes and grouping of the fixtures and the DMX desk can control the levels of these groups or scenes.
www.installation-international.com
March 2014 37
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