This example shows a sports hall used for many different types of activity, ranging from keep-fit to TV-broadcast indoor-bandy league matches. The hall has one entrance and there is no folding partition for subdivision of the hall. So that the lighting can be adapted to the various activities, an installation with four lighting levels has been installed:

0 per cent – completely switched off
approx. 1 per cent – basic lighting (0-2 hrs)
approx. 20 per cent – exercise lighting (automatic activation)
approx. 70 per cent – game lighting (push-button)
100 per cent – match lighting (e.g. code lock)

The required lighting levels are set in two NV-2 DSI level selectors with digital control of the fittings.

Light sources

The fittings in the hall have dimmable HF operating devices with digital control in accordance with the DSI standard.

Positioning of detector

Positioning of the detector is crucial to the function! The example below shows how the detector should be positioned. With this positioning optimum detection is achieved upon entry, and the detector does not look out through the entrance, which means the lighting does not remain switched on when someone passes by outside. The detector is positioned in the corner furthest away from the entrance at a height of 2 – 2.5 m. The mounting height is very important to reliable detection. Mounting too high up can result in relatively large areas with poor detection.
A protective grating is used for corner mounting to protect the detector against balls etc.

Information for current budget

The control system in this installation works in accordance with the ‘Dynamic lighting control’ principle. The technology can be used both for acoustic control and for control using IR detectors. The wiring diagram for dynamic lighting control using IR detectors is shown on the following page.

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.

The installation in the example is based on two NV-2 DSI level selectors and the EX-13 logic module. Presence in the hall is detected by a PD-2200 IR detector with Lens No. 15.

Upon entry into the hall the exercise lighting (20 per cent) is activated by the IR detector. If the activity in the hall requires more light, the lighting can be activated in two further stages. The game lighting is switched on by a pulse-emitting high/low push-button. Renewed pressure on the button reconnects the basic lighting. It must not be possible for just anyone to switch on the match lighting, thus this is done using a code lock, a key switch or a switch in a locked cabinet.

When the presence ceases the lighting is switched down to basic lighting following the delay (5 – 7 minutes) set in the IR detector. The exercise, game and match lighting can also be switched off manually using the ‘Off’ push-button, going into dynamic rest mode. The basic lighting stays on at approx. 1 per cent light strength for about an hour a time set on the ‘Off’ potentiometer in the EX-13. If no presence is detected during this time the lighting is then completely switched off by the EX-13 breaking the feed to the contactor.
If presence is detected in dynamic rest mode, exercise lighting is activated.

See wiring example below!
Note jumper settings!

Four-level lighting control in a sports hall

0% – Switched off completely.
approx. 1% – Base lighting (0 – 2 hours).
approx. 20% – Training lighting (switched on automatically).
approx. 70% – Game lighting (pushbutton).
100% – Match lighting (e.g. code lock).

1. The teacher arrives and prepares the hall for the first class: lighting is switched automatically to 20 per cent level.
2. The first class starts at 8.00am: an exercise class, for which 20 per cent lighting is sufficient.
3. Break: lighting is reduced to one per cent base lighting five minutes after the last person leaves the hall.
4. Lighting is switched manually to 70 per cent level when the second class starts (basketball).
5. Break: lighting is reduced to one per cent base lighting five minutes after the last person leaves the hall.
6. The third class begins with warm-up and the lighting set at 20 per cent, followed by football, during which lighting is increased to 70 per cent level.
7. Lunch break: lighting is switched automatically to one per cent level.
8. One hour after presence is last detected, the lighting is switched off completely.

9. Gymnastics class: lighting is switched on automatically at 20 per cent level.
10. Teaching is finished for the day: lighting is reduced to one per cent base lighting five minutes after the last person leaves the hall.
11. Indoor bandy team has a training session.
12. Aerobics class.
13. Basketball league game. During warm-up, lighting is set to 70 per cent, then increased to 100 per cent at start of match.
14. Match lighting is switched off manually at end of match.
15. Everyone leaves and the lighting is reduced to one per cent base lighting five minutes after the last person leaves the hall.
16. One hour after presence is last detected, the lighting is switched off automatically.