TRE C ceilings with intelligent lighting
TRE C metal ceilings can incorporate LED luminaires into the ceiling layout. The position of each luminaire and the rhythm of the ceiling modules can be planned together, taking ventilation, sensors and access for maintenance into account.
DALI control lets each lighting zone respond to how the space is used. In an office, for example, the row next to the windows can dim when daylight is available, while the inner row maintains its set level. In a meeting room, users can switch from a working light level to a presentation scene.
DALI dimming is available across the TRE C lighting range. During design, TRE C can help coordinate the ceiling system, luminaire selection and control functions required for the project.
How DALI lighting control works
DALI (Digital Addressable Lighting Interface) is the digital lighting control protocol covered by the IEC 62386 series. A controller can adjust one luminaire, a group or all luminaires on the same line.
DALI bus and LED drivers
The controller sends commands over a two-wire bus with a dedicated or integrated bus power supply. The drivers adjust light output. A DALI-2 line can address up to 64 control gear units and up to 64 control devices in separate address spaces.
DALI simulator
Select all luminaires or one zone, change the level and recall a scene. The percentages are illustrative. This demo runs locally in the browser.
Twelve diagrams explaining DALI
The controller communicates with the drivers over a shared bus.
Each driver can have a short address for individual control.
Drivers can belong to multiple groups. Control gear supports 16 groups.
Each driver can store 16 scene settings. A shared recall command activates the settings programmed into each driver.
Light output can change gradually. The driver helps determine the response curve and the usable minimum level.
The controller can use occupancy sensor events to adapt the lighting.
A light sensor can provide measurements for the controller to adjust the contribution of electric lighting.
DT8 Tc control can adjust colour temperature with suitable drivers and LED modules.
The controller can query gear for supported status information.
DALI uses addressable digital commands. With analogue 0–10 V, luminaires on the same dimming circuit share a signal.
Identify the luminaires, assign addresses and groups, then programme and test scenes and sensors.
DALI dimming is available across the TRE C lighting range. Specify the configuration and functions required for the project.
DALI-2 and component selection
DALI-2 certification applies to specific products. Confirm the driver model, controller and required functions with TRE C for your project.