What is a rheostatic light control

Advantages and functions of a light management system

A professionally planned and correctly installed light management system is flexible, offers a high level of operating convenience, saves energy and is optimally tailored to the required visual tasks.


According to the International Energy Agency (IEA), 15 percent of the world's electrical energy is used for lighting. According to the Federal Environment Agency, the share of energy consumption in Germany in 2015 for lighting in the commercial, retail and service sectors was 14 percent. The contribution that intelligently used light can make to saving energy is correspondingly high.

Light management reduces energy costs

Savings can be achieved above all if efficient light sources are used and these are also dimmed or even switched off according to need, presence and time of day. Alternatively, the lighting level can be dimmed down significantly at safety-relevant points where switching off may not be permitted. For this purpose, presence sensors with switches and integrated dimmers that match the light source are used and programmed accordingly, possibly combined with a time control. For example, the system can be operated fully automatically with daylight-dependent control.

In this way, power consumption can be reduced significantly without the user forfeiting the quality of light. Controlled lighting with LED lights saves up to 80 percent energy and electricity costs compared to an old system with metal halide lamps. Additional initial costs compared to an uncontrolled lighting system therefore often pay off after a short time.

With the help of recorded operating data, e.g. For example, through energy monitoring or logging of measured values, further optimization and savings potential are opened up.

Light management gives security

Safety can be increased through central control and possible remote monitoring of the lighting. These include B.

  • the storage of the maintenance plan in the program,
  • the feedback of errors in the case of defective light sources or cables in the system as well as
  • Protection against break-ins - the security service can, for example, simply switch on the light via the light management system.

The safety lighting can be integrated directly into the light management system (LMS) and special requirements for dangerous workplaces, such as B. when milling or turning, are taken into account. If the LMS is planned at the same time as other electrical systems, it can be integrated into the overall building management.

Light management creates ambience

Modern lighting technology can control the color impression and brightness in such a way that different moods are generated or certain light scenes, e.g. B. in the office or conference room, are easily retrievable again and again. Intelligent lighting control can now also be implemented with very little effort, e.g. B. via radio solutions. Operation, programming and control of individual lights or entire groups of lights can be carried out using a smartphone or tablet, for example.

Light management supports people

In areas with little daylight, light management systems can simulate the brightness and color of artificial light based on natural daylight. These lighting concepts with dynamically controlled illuminance levels and color temperatures support the biological rhythm of humans in a natural way and have a positive effect on wellbeing and performance during the day.

Light management offers flexibility

A relevant criterion for choosing the right light management solution is flexibility, e.g. B. in the case of rededication of industrial areas or new decorations in the shop window. Various light colors, different lights and direct and indirect light in different combinations allow a wide range of uses for a wide variety of situations and activities. Light scenes and lighting effects can be easily configured according to the respective requirements. The addressable DALI interface is often used for this.

Controlling light - what is influenced?

  • Luminaires in groups or individually
  • Light intensity / brightness (dimming)
  • Light colors / spectra (hue, saturation and mixture)
  • Direction of light (movement in space, light distribution)
  • Radiation characteristics (focus)
  • Change over time (speed of changes)
  • Use of daylight (sun protection and daylight redirection in buildings)

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