This application shows a corridor in which doors are often open and in which there are no concealed doors. The corridor is used very frequently during certain periods of day, i.e. when there are a lot of transits, thus a system using Dynamic lighting control has been installed.

Light sources

This application shows an example of fittings with dimmable HF operating devices.

Positioning of detectors

To achieve optimum detection and a high level of comfort it is important for detectors to be mounted in the correct position. This is particularly important with corridor solutions. Unfortunately one far too often sees detectors aimed at doors and entrances, thus adversely affecting detection.

The optimum direction of detection is when the fields of recognition are crossed at 90°, and the poorest detection is achieved with motion in line with the fields of recognition in either direction. Because of this, a detector using a lens with a 90° opening angle must be selected. It must be mounted in a corner in front of the door so that it is not obscured when the door opens, and must be at the correct height (1.6 – 1.9 m in corridors).

In corridors up to 40 m long a number 15 standard lens is suitable. Long corridors require a lens that combines a long field of view and a 90° angle of view, such as lens 41. In long corridors that have an entrance door at the far end, detection may be poor when people enter through this door. This is because there is little movement across the field of view. There are around 40 other lenses to choose from. See the lens archive in the handbook.

See also alternative ceiling mounting in application 2F!

Information for current budget

The dynamic system features fittings with dimmable HF operating devices, presence detection and a level selector. The Dynamic lighting control provides the following function:
During presence the lighting is activated at a level of about 80 per cent. One minute after presence has ceased the lighting is dimmed to about 2 per cent. Upon entry into the corridor the lighting is immediately increased back up to 80 per cent. After 2 hours without any presence the lighting is switched off completely.

The most important advantages attained using Dynamic Control are as follows:

• Evenly distributed basic light without extra fittings, operating at a level of 100 per cent.
• The possibility of saving 20 – 25 per cent during operation.
• Lower working temperature in the fittings, resulting in a lower life.
• Fewer activations and less power supplied, reducing wear on the fluorescent powder and resulting in a longer life of the light sources.
• The possibility of avoiding adherence to the light-source manufacturers’ recommendations regarding burning times, thus drastically reducing the operating times and increasing the saving.

NV-2T level selector is also available with DSI control (NV-2T DSI).Carefully study the application and the wiring diagram below, especially in connection with a new building or renovation.

Installation of the detectors should be using the simplest possible cable, Type EKKX 1 x 4 x 0.25 mm2. Correct adjustment is made far easier if the BL-1 field-indication diode (Order No. 13035) is used. This especially applies to long corridors.

Dynamic lighting control with NV-2T in corridor

The yellow area shows the energy consumption with lighting control according to the light source manufacturer’s recommendations.

The green area shows the energy consumption with lighting control installed.

A day in October compared with corridor/aisle with no lighting control at all (yellow area).
When there is adequate daylight the light sensor in PD-2200 prevents the lighting from switching on.