The architecture of light: architectural lighting design concepts and techniques. A textbook of procedures and practices for the architect, interior designer and lighting designer pdfdrive com

Figure 23.4 A typical Scene Controller or “Keypad”
employed, power is delivered from the distribution panel to a nearby intelligent lighting control panel (we will call it the “lighting panel”).
Electricity then flows directly
from the “lighting panel” to the luminaires. This means that the primary control of electricity flowing to a luminaire is the intelligent lighting panel itself. In the set- up shown in Figure 23.5, individual control devices like multi-button keypads send a
signal to the lighting panel telling it to deliver electricity to the luminaire (or not to). The biggest benefit of this type of design is that control devices can send a signal to the lighting panel to tell it to operate any luminaire that is connected to the lighting panel: A button on a keypad in the kitchen can tell the lighting panel to activate the lights in the laundry room; a keypad next to the bed can tell the lighting panel to turn on every luminaire in the house. This type of lighting control scenario can be identified as three parts:

• The intelligent lighting control panel (usually only one per project);
• The control devices like multi-button keypads that replace common light switches;
• The groups of luminaires that we want to control together (called “lighting loads” or “lighting zones”).

The function and design of the system branches out from this basic concept. The lighting loads get specific names (or more likely address numbers), and we program the lighting panel to recognize these names or addresses. We then program the individual control devices to send the appropriate signal to the lighting panel.

Figure 23.5 Elevation diagram of electrical delivery for an intelligent “whole-project” lighting control system.
In a set-up like Figure 23.5, we would program the top button of a keypad to send a signal to the lighting panel to send power to a load in the room. In this fashion, we can program the buttons on a keypad to control different lighting loads to different intensities to create “scenes.” When this type of control synchronization is distributed throughout an entire project, we call it a “whole building” lighting control system.