4
Choosing a Suitable Location
The EBDHS-DD-LT30 is designed to be ceiling mounted and must satisfy the following criteria:
Avoid positioning the unit where direct sunlight may enter the sensor element.
Do not site the sensor within 1m of any lighting, forced air heating or ventilation.
Do not fix the sensor to an unstable or vibrating surface.
Installation
Detection Mode
The Detection Mode for both output Channels 1 and 2 can be set to behave in Presence or Absence mode:
Presence
When movement is detected the load will automatically turn on. When the area is no longer occupied the
load will automatically switch off after an adjustable time period.
Absence
The load is manually switched on. When the area is no longer occupied the load will automatically switch
off after the adjustable time period has elapsed.
In either case, sensitivity to movement of the PIR sensor can be adjusted using the Sensitivity parameter.
HINT: To assist in setting the Sensitivity, turn on the Walk Test LED which will flash red when movement is detected.
Switch Level On/Off
Occupancy detection can be made dependant on the ambient light level using the Lux On Level and Lux Off Level
parameters.
Maintained Illuminance
The detector measures the overall light level in the detection area and calculates the correct output for the luminaires, to
achieve a preset lux level (maintained illuminance).
Sensor functionality
The UNLCDHS has the ability to read back the settings stored in a device.
To read back individual parameters
Navigate to the parameter and press the ‘R’ (Read) button whilst pointing at the device. The handset will click
when the parameter has been read back, the device will flash its LED, and the value will be shown against the
parameter in the menu.
To read back all of the parameters in a menu
Press and hold the ‘R’ (Read) button for more than 1 second.
The handset will click every time a parameter is received
The device will show multiple flashes of its LED
All of the values will be shown against the parameters in the menu.
The individual parameters may be edited and then saved as a ‘Macro’.
Notes
If a parameter(s) has been missed because of a communication error, the missing value(s) is replaced by dashes.
When reading back, the Channel 1 relay (where fitted) will temporarily be switched off, and will return to it’s
normal state 2 seconds after the read back has been completed.
Readback function
(UNLCDHS handset only)
