4.11.
Special cases (applicable only to modes 3 and 4)
Special case 1
Description
Threshold 1 is set without a physical target (the target being the “Background”), and the
Threshold 2 button is set with a target too close to the background distance
.
Outcome
The software shall decode the condition as a single zone and automatically activate
Operating Mode 1: as soon as an object or a person enters the Field of View of the set
threshold area, a switching output is triggered. The sensor is activated as long as an object
or a person is in the trigger zone. Both LED indicators, Th1 and Th2 will stay continuously
ON (RED) as long as the object is in the Field of View.
Special case 2
Description
Threshold 1 is set with a target (not the “Background”) and Threshold 2 is set without
moving the target or with a slightly moved target with regards to Threshold 1.
Outcome
The software shall decode the situation as a mode with: 1 Background Threshold and 1
distance threshold. As Figure 23 illustrates only 2 detection zones are created in this case:
●
From min. Sensor distance (50 cm) to Threshold 1/2 (referred to as “close” zone)
●
From Threshold 1/2 to Background Threshold (referred to as “far” zone)
By default, the active trigger zone (referred to as “Fly Zone”) is set to the close zone. By
accessing the “Fly Zone Select” parameter, the user can change the active trigger zone to
the far zone. Please refer to
“FLY ZONE SELECT” for more details.
The NO/NC switching output will be activated
as soon as an object or a person completely
leaves the
light beam of the selected “Fly Zone”
(the measured distance corresponds to the
background threshold distance)
.
The NO/NC switching output duration time by default is set to 250 ms, but can be modified
using the for “NO/NC on time” parameter (see
A detection in the “No-Fly Zone” will blink both LED indicators, Th1 and Th2, once (RED).
A detection in the “Fly Zone” will blink both LED indicators, Th1 and Th2, once (GREEN).
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