5
- 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:
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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
t
