Control Systems
Constant Light Output (CLO)
This system compensates for the depreciation of luminous flux to avoid excess lighting at the beginning of the installation s service life. Luminous depreciation over time must be taken into account to ensure a predefined lighting level during the luminaire s useful life.
Without a CLO feature, this simply means increasing the initial power upon installation in order to make up for luminous depreciation. By precisely controlling the luminous flux, the energy needed to reach the required level can be maintained throughout the luminaire s life.
Daylight Sensor / Photocell
Photocell or daylight sensors switch the luminaire on as soon natural light falls to a certain level. It can be programmed to switch on during a storm, on a cloudy day (in critical areas) or only at nightfall so as to provide safety and comfort in public spaces.
1. Standard lighting level | 2. LED lighting consumption with CLO | 3. Energy savings
A. Dimming level | B. Time
Custom Dimming Profile
Intelligent luminaire drivers can be programmed with complex dimming profiles. Up to five combinations of time intervals and light levels are possible. This feature does not require any extra wiring.
The period between switching on and switching off is used to activate the preset dimming profile. The customised dimming system generates maximum energy savings while respecting the required lighting levels and uniformity throughout the night.
PIR Sensor: Motion Detection
In places with little nocturnal activity, lighting can be dimmed to a minimum most of the time. By using passive infrared (PIR) sensors, the level of light can be raised as soon as a pedestrian or a slow vehicle is detected in the area.
Each luminaire level can be configured individually with several parametres such as minimum and maximum light output, delay period and ON/OFF duration time. PIR sensors can be used in an autonomous or interoperable network.
A
LM
B
100 %
80 %
60%
17 21 23 01 03 05 07
40 %
20 %
100,000 h
KWH
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3
2
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