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5
Primary Device Functions (continued)
5.8
Automatic Switching Threshold Adaption
5.8.1 Description
Cleaning cycles can be extended with the help of
automatic switching threshold adaptation. The relative
sensor measurement value is continuously and
automatically adapted in proportion to the detected soiling
of the front lens or reflector. This function can be especially
helpful when detecting highly transparent objects to make
the detection more stable with respect to soiling and to
keep it stable for a longer time.
Fig. 5-14:
Light
energy
Teach-in 100% reference
Sensor no longer switches due to soiling
Sensor continues to switch despite soiling
100% reference
Adapted energy signal
Output switching
threshold
Alarm Threshold
Current Receiver Level
Switching
signal
without
adaptation
Switching
signal with
adaptation
Alarm
Con-
tamination
Decreasing light energy signal
– Sensor soiled
Automatic Switching Threshold Adaption – Description
5.8.2 Process Data
Object ID
Name
Description
Direction
0x002E (46)
Switching Threshold Adaption Alarm
The
Current Receiver Level
referenced
against the 100% reference falls below
the
Alarm Threshold
Input
0x0035 (53)
Current Receiver Level
The currently available reception level
referenced against the 100% reference
Input
Tab. 5-28: Automatic Switching Threshold Adaptation – Process Data
BOS R254K-UUI-LK10-S4
Photoelectric Sensors
Содержание BOS R254K-UUI-LK10-S4
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