Taking control

Lighting at 1 Bligh Street in Sydney is being controlled with the help of EBDSPIR DD and MWS5 detectors manufactured by CP Electronics. The building is the next generation in high-performance sustainable office space and has been awarded a 6 Green Star Office Design v2 certification by the Building Council of Australia.

Combining leading-edge design, technology and sustainability, 1 Bligh Street is located at a premier site in Sydney’s financial hub. Co-owned by DEXUS Property Group, DEXUS Wholesale Property Fund and Cbus Property, the flagship office tower provides 28 levels of office space within a double-skin facade, a 135-metre-high naturally ventilated glass atrium and incorporates blackwater recycling that saves 100,000 litres of water a day.

CP’s MWS5 compact microwave detectors have been installed in over 350 perimeter offices.  Chosen for their flexibility and compact dimensions, the MWS5 allows lighting designers to easily incorporate presence and absence detection into their lighting designs. The use of the MWS5 at 1 Bligh Street allows for absence detection and daylight harvesting, so when there is sufficient natural light the lighting dims to keep a constant lux level.

CP’s MWS5 DD was also used within suspended, extruded light fittings throughout the offices, while the detectors were used in conjunction with a momentary press switch for each of the channels of the detector. The relay channel controlled a remote LED task light over the desk and the dimming channel controlled the fluorescent light in the extrusion. The dimming channel also provided daylight harvesting to provide ultimate energy savings throughout the day. Each channel was also utilising absence detection for added control by the user in each of the 350 plus cellular offices on the perimeter of the building.

Internal offices providing absence detection are being controlled with CP’s EBDSPIR DD detectors. The EBDSPIR-DD PIR (passive infrared) presence detector provides automatic control of lighting loads with optional manual control. Output channel one comprises a mains voltage relay capable of simple on/off switching, while output channel two provides dimmable control of either DALI- or DSI-type ballasts. Functioning as a presence detector, the unit can turn lights on when a room is occupied and off when the room is empty. Optional settings allow lights to be turned off in response to ambient daylight, or to implement a maintained daylight harvesting system.

The EBDSPIR DD allows for simple plug-in connection and can be flush mounted into a ceiling tile or used with a surface mounting box. The low-profile design allows units to be mounted within narrow ceiling voids, with no external control boxes required as the unit is self-contained.

1 Bligh Street has also been constructed to achieve a 5 star NABERS energy rating, the national rating system which measures the environmental performance of Australian buildings with respect to energy efficiency, water usage, waste management and indoor environmental quality.