PIR occupancy switches with daylight linked dimming
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Ceiling surface-mounted PIR occupancy switches with closed loop control for DALI ballasts CESR PIR DALIP and CESRA PIR DALIP can be used to control up to 12 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. These products are hard wired and can be mounted directly onto solid ceilings or onto a range of different mounting boxes. Product code: CESR PIR DALIP and CESRA PIR DALIP |
CESR PIR DALIP (Presence detection)
CESR PIR DALIP 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.
CESRA PIR DALIP (Absence detection - momentary switch required)
CESRA PIR DALIP 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). These controls have an integral DALI Power Supply Unit suitable for use with up to 12 DALI ballasts, assuming each ballast has a constant current output of 1mA. 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: | 91mm diameter x 45mm |
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
91 x 91 x 45mm 
- 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 CESR PIR DALIP (or CESRA PIR DALIP) to dim and and a few CEFL PIR to switch
- Wiring DiagramsOpen or Close
CESR PIR DALIP controlling several DALI dimmable ballasts 
CESRA PIR DALIP controlling several DALI dimmable ballasts 
