ensto PXA53.1 Notice D'installation page 16

The detection distance may vary according to the ambient temperature. It may also vary if the
distance between the lens attached to the diffuser and the sensor in the light fi tting has altered.
The detection area can be restricted to a desired direction by partially covering off the lens with the
non-transparent tape supplied in the kit.
4. OPERATION
After connection to the power supply, or after a power failure, the PIR sensor will be func-
tional approx. 5 seconds after its automatic self-test. If movement is detected by the PIR
sensor after it is functional, it will turn on the light fi tting if conditions are dusk enough (see
LUX adjustment). The light fi tting will switch off when the movement stops and the delay
time set on the TIME potentiometer has been reached.
The PIR sensor's green LED glows dimly when the sensor is ready to operate but has not been
triggered. When the sensor is triggered by movement the red LED comes on. If the device detects
a fault during the self-test, after connection to the power supply, the red LED fl ashes alternately
brightly and dimly.
5. ADJUSTMENTS
Before any adjustments can be made the diffuser must be removed. Adjustments should be
made using a small screwdriver, the appropriate potentiometer being gently turned. The
marked settings are only an approximate guide and are not precise (see pic. 3). The settings
made at the factory are the TIME horizontal setting (approx. 3 minutes), the LUX medium
setting (approx. 100 lx) and the SENS horizontal setting (set to the max. side).
L, N: 220-240VAC 50/60Hz
A, B: 220-240VAC
2A
0-50VAC/SELV
LUX: 1lx -
TIME: 3-30 min
LUX SENS
TEST
PXA 53.2
L, N: 220-240VAC 50/60Hz
A, B: 220-240VAC
2A
0-50VAC/SELV
LUX: 1lx -
TIME: 3-30 min
SENS
LUX
TEST
PXA 53.2
16
SENS The SENS potentiometer permits adjustment of the sensitivity
of the sensor to movement. Note that also the sensor's detection area
may be altered.
TEST Turning the SENS potentiometer moves the sensor in the test
mode. This test mode lasts for 3 minutes from the last adjustment
of the SENS potentiometer. In the test mode the green and red LEDs
fl ash alternately. In the test mode the detection area can be tested by
walking across in front of the sensor, causing the light fi tting to switch
on in response to the movement for approx. 5 seconds. The sensitivity
during a test will be at the level indicated on the SENS potentiometer.
After switch off there is a delay of approx. 2 seconds before switching
on again.
LUX The PIR sensor always reacts if the illumination is lower than
the operating threshold set on the potentiometer (LUX setting). If the
LUX potentiometer is turned so that a dim LED (red or green) becomes
brighter, the sensor goes into the illumination level setting mode.
In the setting mode the sensor switch the light fi tting off and it will
not come on for approx. 5 seconds. The ambient illumination level
is indicated by the LEDs at the point where the green and red LEDs
changeover. If the LUX level set is higher than the ambient illumina-
tion, the red LED will glow brightly and if it is lower the green LED will
glow brightly.