Dynalite DUS804C-DALI Installation Manual

DUS804C-DALI

Ceiling Mount Universal Sensor Installation Manual

The DUS804C-DALI is a low profile recessed flush mount 360º ceiling mount sensors that combines
motion detection (PIR) and ambient light level detection (PE) in one device. The sensor is powered directly
by the DALI network that is running between the DALI fittings, eliminating the need for additional network
field wiring or network power cables. The sensor can only be used when connected to the DALI port of the
DDBC120-DALI unit.

In applications such as office buildings, lecture theatres, and homes, the DUS804C-DALI multi function
sensor can be utilised to detect different levels of motion and switch on the lights. The sensor can detect
movements over a 7.42m x 5.66m area with a mounting height of 2.4m. When an area is unoccupied the
sensor can detect this and the lights can be automatically dimmed or switched off to provide energy
savings. The unit also incorporates a segmented click-up bezel surrounding the motion sensor element.
This enables a portion of the sensing field to be readily masked to prevent nuisance detection from
adjacent doorways or corridors. In situations where it is critical to maintain precise lighting control for
individual workspaces, such as an office workstation or even air traffic control centers, the DUS804C-DALI
facilitates light compensation. The DUS804C-DALI can also be placed in an automatic “Daylight
Regulation” mode for additional energy savings.

instructions

2 DUS804C-DALI Installation Manual Rev B.docx

This unit is for indoor use only. This unit is designed for installation in a 64mm diameter hole where the
ceiling void is at least 40mm deep. Select an appropriate indoor mounting location, as detailed in the location
guidelines on the following pages. Note that the product has two functions, and the optimum mounting
location for each individual function may conflict with each other, and may require use of multiple sensors.

DUS804C-DALI network connections

Motion detection mounting location

• Power down & isolate DALI bus prior to wiring the device

• Fix the sensor to a firm section of ceiling

• Position the sensor so it is between 2.1 and 4.0m from the floor. Optimum height is 2.4m

• Position the sensor so it is at least 1m away from electrical lighting such as neon and fluorescent lights

• Position the sensor as to avoid exposing it to direct sunlight, glare and heating/cooling sources

• Position the sensor where pedestrian traffic is likely to walk across the detection zones (see motion

detection coverage diagram)

• Note that for the DUS804C-DALI coverage area is rectangular (see Motion Detector coverage diagram)

• For programming instructions refer to Dynalite Tech Note - Setting up Motion Detector function

DALI cable connected to sensor.

The sensor has been designed for the DALI network to loop through and then loop out to the next device.
The different DALI network devices can be connected in any order along the network. The sensor does not
need to be directly connected to the lighting groups that is to be controlled.

PIR sensor

DALI network
sign on button

Light level sensor

Click-up bezel for
motion shield