Installation procedure
1. Please read these notes carefully before commencing work.
In case of doubt please consult a qualified electrician.
2. POSITIONING: The CESRA PIR 10VDC should be installed to achieve correct
coverage of the area, see diagram A. Avoid locating this product where it is
exposed to drafty conditions (exposed lobbies, open ceiling voids or near
fans) or near heat sources.
3. Make sure the power is isolated from the circuit.
The PIR should be connected as shown in diagram D:
SL
Switched Line out
L
Live in
N
Neutral in
DA -
- control line (Polarity dependant)
DA +
+ control line (Polarity dependant)
SW
1
Switch input
4. Knockout or drill the appropriate holes on the mounting plate for attaching
the plate to the ceiling or back box (if applicable). Feed cables through
the appropriate (side or rear) entry hole (see diagram E). Screw the back
mounting plate to the ceiling or back box via the mounting holes. Wire the
cables into the sensor head block terminal. Push the sensor head onto the
mounting plate and align the side clips with the slots on the sensor heads.
Start-up mode
When the PIR is powered up, it will switch on the load for 1 minute, the load
will then switch off and the PIR will enter its Operating Mode.
Time / Run-on / Lux set up
The LUX adjuster spindle on the side of the PIR is used to regulate the automatic
daylight linked dimming function lux level (see diagram C opposite). This should
be adjusted in situ by rotating the LUX adjuster slowly anticlockwise (+ to -)
so that the desired level of brightness is achieved under the luminarie(s) being
controlled.
Once the correct level is achieved and there has been no further adjustment to
the LUX spindle, CESRA PIR 10VDC will go through a 30 second delay before
the automatic closed loop control will start.
CESRA PIR 10VDC incorporates a fixed 90 second fade rate from maximum
to the set back level.
Sensitivity
CESRA PIR 10VDC incorporates a sensitivity adjuster, labelled ‘SENS’, to
reduce the range of detection from 100% to 50% in 9 steps (see diagram
B opposite).
L
N
Ballast
1 10
CEFLA PIR 10VDC
Control Lines
Optional
other load
230 VAC
SL
L
N
Ballast
1 10
Mains rated retractive
wall switch or rocker
wall switch (toggled)
SW
1
CESRA PIR 10VDC
up to 5m
up to 7m
Strong detection zone
i.e. person moving arm
or walking towards PIR
Secondary detection zone
i.e. person walking
perpendicular to PIR
For optimum coverage
recommended mounting
height: 2.4 to 5m
D: Wiring diagram,
CESRA PIR 10VDC controlling several 10VDC dimmable ballasts
RUN ON
min
max
LUX
min
max
Typical settings
INFINITE
30m
20m
15m
10m
5m
0s
1m
2m
C: Adjusting LUX and RUN-ON
TIME
min
max
SENS
min
max
Typical settings
40m
20m
10m
5m
2.5m
80s
10s
20s
40s
50%
100%
B: Adjusting SENSITIVITY and TIME
A: Detection diagram
Knock out mounting
holes or pre-drill
pilot holes.
For cable entry
from above -
knock out central
mounting hole
For side entry -
knock out side
mounting hole
from mounting
plate and device
Connect wires to
terminal block on
the device
Join device to
mounting plate via
mounting clips
E: Mounting plate fixing
