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Design-in Guide - Philips EasySense luminaire-mount sensors
May 2016
System startup behavior
and auto-calibration
System startup behavior
When the sensor is powered (mains of driver is
switched on or a momentary power dip is detected
by the sensor), the sensor performs an auto-
calibration routine.
Auto-calibration routine
Below describes the calibration routine.
• Light is switched on at maximum light level set by
max of AOC (adjustable output current).
• Light dims down to minimum dimming level.
• Sensor stores the value detected by the light
sensor.
• Light dims up to maximum light level which is set by
the field task level.
• Sensor stores the value detected by the light
sensor.
• A calculation is executed, and calibration set point
will be determined.
• Light dims down to the task level that meets the set
point.
Warning:
Make sure no objects are blocking the sensor’s
view and no surface reflectance changes occur
in the sensor’s view during auto calibration.
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