PIR occupancy switches with daylight linked dimming
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Ceiling flush-mounted PIR occupancy switches with closed loop control for DALI ballasts CEFL PIR DALI and CEFLA PIR DALI can be used to control up to 20 high frequency DALI dimmable ballasts (broadcast). They incorporate a passive infra-red quad sensor to detect movement of a warm body within its detection zone and a photocell to monitor the ambient light level. The products can be flush mounted into suspended and plasterboard ceilings. Product code: CEFL PIR DALI and CEFLA PIR DALI |
CEFL PIR DALI (Presence detection)
CEFL PIR DALI operates by Presence Detection. The PIR switch will automatically switch the lights ON when a person enters the room. It will automatically switch the load OFF or to its reduced lux level (minimum) when no further movement is detected for its RUN-ON time.
CEFLA PIR DALI (Absence detection - momentary switch required)
CEFLA PIR DALI operates by Absence Detection. It requires a retractive (momentary) switch to be pressed when a person enters the room. This will switch the lights ON and enable the PIR switch to control the load. The load will automatically be switched OFF or to its reduced lux level (minimum) when no further movement is detected for its RUN-ON time.
Run-on timer - Step down illuminance
RUN-ON SET TO 0 SECONDS: When an area is no longer occupied the control will switch OFF from the maintained lux level after a pre-selected time lag (10 seconds to 40 minutes in 9 steps) if the RUN-ON timer is set a 0 seconds.
RUN-ON SET TO 1 MINUTE TO 30 MINUTES: When an area is no longer occupied the control will dim down to a minimum setting from the maintained lux level after a pre-selected time lag (10 seconds to 40 minutes in 9 steps) if the RUN-ON timer is set from 1-30 minutes.
The lights will stay ON at this reduced level for the pre-selected RUN-ON time then switch the lights OFF. If the PIR detects movement of a warm body while the RUN-ON is timing down the lights will switch ON to the maintained (maximum) lux level.
RUN-ON SET TO INFINITE: When an area is no longer occupied the control will dim down to a minimum setting from the maintained lux level after a pre-selected time lag (10 seconds to 40 minutes in 9 steps) if the RUN-ON timer is set at infinite.
The lights will stay ON at the reduced (minimum) lux level indefinitely until movement of a warm body is detected then the lights will switch ON at maximum and then to the maintained lux level.
Please note: Maximum and minimum levels could be set within the ballast NOT the DANLERS control.
Specification
| Detection Zone: | 360° |
| Time lag range: | 10 seconds to 40 minutes in 9 steps |
| Run-on time: | 0, 1, 2, 5, 10, 15, 20, 30 mins and infinite (always ON at minimum) |
| Photocell range: | 30 to 1000 lux, and inactive |
| Loading: | Daylight linked dimming with occupancy switching. For controlling DALI dimmable ballasts (broadcast only). The external DALI power supply provided can control up to 40mA, eg. 20 ballasts at 2mA (varies according to make and model of ballasts). For greater numbers of ballasts (64 max.)additional external DALI Power supplies can be purchased (DANLERS order code: DBPSU). These controls can also switch up to 6 amps (1500W) of dimmable fluorescent lamps. 2 amps (500W) of CFL, LED Drivers and LED lamps and fittings. |
| Dimensions: | 72mm diameter x 68mm |
Daylight linked dimmer functions
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| UNOCCUPIED DAY - LIGHTS OFF (Timed or zero run-on) |
OCCUPIED DAY - LIGHTS ON (MAXIMUM) (Maintained lux value) |
UNOCCUPIED - LIGHTS ON (MINIMUM) (Timed or infinite run-on) |
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| OCCUPIED NIGHT - LIGHTS ON (MAXIMUM) (Maintained lux value) |
UNOCCUPIED NIGHT - LIGHTS OFF (Timed or zero run-on) |
- DimensionsOpen or Close
Requires 63 or 64mm (2.5”) diameter hole in a false or plasterboard ceiling 
- Detection DiagramsOpen or Close
Strong detection zone
ie. person moving arm
Secondary detection zone
ie. person walking (less sensitive when walking straight towards PIR switch)PIR Quad detector gives 124 detection areas within the zone
Perspective view of detection zone
For optimum coverage recommended mounting height between 2.4 and 5m
Covering large areas
To cover large areas it is advisable to install one CEFL PIR DALI (or CEFLA PIR DALI) to dim and and a few CEFL PIR to switch
- Wiring DiagramsOpen or Close
CEFL PIR DALI controlling several DALI dimmable ballasts 
CEFLA PIR DALI controlling several DALI dimmable ballasts 
