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done properly, it will have no negative impact on business operation whatsoever.

Our recent project with Allianz Insurance demonstrated the additional savings that proper lighting controls offer in an LED installation. The Milton Keynes office had proved particularly problematic in terms of lighting maintenance and operational lighting efficiency. With approximately 100 people working in the office, each with their own lighting likes and dislikes, the whole space appeared gloomy in places and overlit in others.

With highly efficient LED panels replacing the recessed fluorescent modular fittings throughout the office, the introduction of an intelligent lighting control became a must. Using the DALI protocol to individually control each light fitting, our system has allowed Allianz to tailor light levels to suit individual workstations and maintain an operational load that is 65% of full power. The lights operate on a time profile that reflects working times, switching on and off with occupancy. They are also responsive to daylight levels and, in the meeting rooms, can be set to various scenes to match the activity of the room.

Overall, this has created a more consistent, calmer, more enjoyable working environment whilst delivering considerably reduced energy consumption. The LIGO

control system has reduced the energy consumption of the office lighting by an additional 35% on top of the 60% energy reduction achieved through the introduction of LEDs. Overall, the project achieved annual energy savings of 29,461 kWh and a reduction of £5,707 on energy bills.

“Lighting controls can remove the human error factor in high-risk situations by linking to other building systems.”

Taking people out of the equation can also mean further cost savings. For example, controls have the ability to test emergency lighting, which saves the need for hiring someone to attend the building to do so. They can also remove the human error factor in high-risk situations by linking the lighting controls to other building systems. If there is a fire alarm, for example, the lighting controls can automatically light all the corridors to the exits. Control systems can offer time control to match the lighting to building use, but also presence and absence controls ensure that lights are not left on needlessly, even when the space is in use.

Linking to existing building management systems (BMS), with remote access through a company’s network or the internet, allows FMs to remotely control the lighting within

a building, including the condition of emergency lighting and battery back- up systems. Lamp failure and ballast failure are, of course, reported.

At the more advanced end of the lighting controls spectrum, the installation of DALI controllers allows each individual luminaire to be addressed and controlled as an independent light source. In this way, pre-defined levels of light across a large open plan office can be established to suit the individual requirements of people working at various workstations. At its most advanced, we can tailor energy efficient lighting and personal preferences to a level that is truly customised.

As we look ahead to daunting energy challenges, it’s clear that delivering significant energy and carbon savings whilst continuing to grow, innovate and perform will be a key challenge for all businesses. Lighting is an obvious and rewarding area to start to make changes.

Control is the key to meeting these objectives. Specified alone, LED solutions are impressive. Coupled with intelligent control systems, they represent the future of highly efficient, highly functional lighting design.


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