Lighting Control; Terminology Used In This Chapter - Philips EasySense Design Manual

Lighting control

Terminology used in this chapter

All parameters are stored in the sensor,
and most of the parameters can be configured
through NFC.
• Fade to switch on/off time
• Hold time
• Grace fading time
• Prolong time
• Switched-on level
• Background level
May 2016
Fade to switch-on time is the time (T1 to T2) from
the point at which occupancy is detected until the
lights dim up to the max light output. This timer is set
to 0.7 sec and is not configurable.
Hold time is the time (T3 to T4) from the point
at which the last movement has been detected
(e.g., occupant left the room) until grace time starts.
This timer is set to 15 minutes by default and can be
configured from to 1 – 120 minutes.
Grace fading time is the time from T4 to T5 during
which the lights are being dimmed down from the
current light level to the background level. By default,
grace fading time is 10 sec and can be configured to
0 – 25 seconds.
Prolong time is the time from T5 to T6 at which the
background level is maintained at a fixed level.
Default prolong time is 15 minutes and can be
configured from 0 – infinity.
Fade to switch-off time is the time (T6 to T7) for
the lights to fade from background level to off after
prolong time is expired. This timer is set to 0.7 sec
and is not configurable.
Field task level is used to configure the required light
level on the task plane, which is also the maximum
light level of the luminaire. It can be configured
through the app. (See Task tuning.)
Switch-on level is a predefined output level that will
be activated when occupancy is detected. The
switch-on level is not configurable and is set to
100%, or the field task level if set lower than 100%.
Background level is a light level lower than 100%,
used to save energy when space is not occupied.
Design-in Guide - Philips EasySense luminaire-mount sensors 9