© 2008 Schneider Electric
● Brightness evaluation
Brightness evaluation of a movement detector:
The movement detector changes to non-brightness-
dependent mode once the start of movement action
(sending an ON telegram) has been carried out. Here
freshly detected movements can retrigger the
staircase timer. The movement detector cannot
process the brightness jump and there is not even any
setting of a hysteresis.
Brightness
The brightness threshold can be parametrised
separately for each of the five movement blocks. Each
block has its own "Brightness" tab. A staircase timer be
started (depending on parametrisation of the device)
and an ON telegram transmitted to the bus only after
the value is below the parametrised brightness
threshold and the movement detector detects a
movement. The brightness threshold can be set
between 3 and 1000 lux.
Via the "Brightness threshold object" "Enabled" or
"Disabled" you can select whether the brightness
threshold should be changed via the bus. This can be
useful when several movement detectors are installed
in a building. The brightness threshold can be changed
using the "Brightness threshold - Block X" object via
the ETS or an IP touch panel, for example. The
brightness threshold is set to the same level in all parts
of the building.
Brightness object 1 bit
The brightness object sends a 1-bit value on the bus. If
the parametrised brightness threshold is not reached,
an ON telegram can be transmitted. If the
parametrised brightness threshold is exceeded, an
OFF telegram can be transmitted. Inverted
transmission can also be set.
Always-dark object
In the case of an enabled "always-dark object",
darkness can be simulated internally in the movement
detector depending on the object value. The "always-
dark object" is used with master/slave circuits.
Planning master/slave circuits is described further
below.
Communication objects
You can select the following communication objects:
Block X, general brightness:
|
Note:
The parameter settings include various
functions which depend on other functions.
Depending on the parameter setting, some
functions or objects may or may not be
displayed in the ETS.
Block X, general movement
sensors sector X
Parameter Setting
Sensitivity High
Medium
Low
Range adjustable Via parameters
Via Potentiometer
Overwrite range during download Enabled
Disabled
Range 10% - 100% (in 10% steps)
preconfiguration: 100%
Change range via object Disabled
Enabled
Staircase timer
ON
OFF
Switch object
Movement
Time
Time
Time
Brightness
Staircase timer
Staircase timer
Staircase timer
Staircase timer
Brightness
threshold
Function Object name Type Prio Flags Behaviour
Block X Brightness
threshold
2
bytes
Low WC Receive
Block X Brightness object 1 bit Low CT Transmit
Block X Always-dark
object
1 bit Low WC Receive
ON
ON
OFF
Brightness
Brightness
object
Brightness threshold
Too bright
Too dark
t
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