Lightmoves Install Freeway Urban Art Project
The Southbank Interchange is a complex interchange that handles traffic travelling between Melbourne's Westgate Freeway and the two City Link tunnels. A sculpture, a smaller version of the infamous yellow sculpture at the beginning of the Tullamarine Freeway, is situated on one of the Southbank Interchange traffic islands. The sculpture was designed to advertise the entrance to one of the tunnels.
Lighting designers Barry Webb & Associates, and their client TransUrban, decided to bring the sculpture to life at night by bathing it in colour changing light. Lightmoves, suppliers of lighting systems and solutions, were contracted to design and install suitable out of doors lighting equipment.
After an extensive investigation into suitable light fixtures, Lightmoves chose three Martin Exterior 600 fixtures believing they were the most suitable for the job in hand.
"We needed a light that was punchy and that could produce a narrow beam," said Haydn Brennan, Lightmove's project manager. "The Martin Exterior was definitely the most suitable. It's reliable and robust. We're using the longer life HSD575 lamp that runs at 7,200°K for 3000 hours."
The Martin fixtures are situated on the traffic island in vandal-proof enclosures. The colour remains static with a simple colour chase activated every fifteen minutes.
A distribution board is built into the side of the sculpture. Control is by a Dynalite DTK932M DMX512 converter and a DTK934T time clock that has relays onboard to switch contactors and turn the power onto the fittings. The 934T time clock then tells the 932M to output DMX to drive the colour change of the Exteriors. An eight push-button panel allows manual over ride.
"The control installation was fairly cheap and compact," said Haydn. "We gained built in time clock ability without having to do anything terribly complicated."
The time clock has a PE Cell connected to know when it is sunset and it then triggers the Martin Exterior 600s to run until midnight.
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