Keyence FS-N10 Series Bedienungsanleitung Seite 62

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4-3 Detection Settings (Func)
4
Settings for Advanced Functions
4-16
- Digital Fiber Sensor FS-N10 Series User's Manual -
Edge detection mode
In the edge detection mode, the sensor amplifier detects changes of received light
intensity over a fixed period.
This mode is used to turn on the output only when a workpiece is moving into or out of
the detection range of the fiber unit.
Turning the output ON when the received light intensity attenuates.
Select "~L_d" (Falling edge detect mode)
To turn the output ON when the received light intensity increases:
Select "_|~d" (Rising edge detect mode)
Timing chart
Combining the edge detection mode and any of the functions below
makes it more difficult to detect gradual changes in light intensity.
If the interference prevention is "dobL" (double):
"Interference Prevention" (page 4-33)
If the eco mode is "FuLL" (Full):
"Power Save" (page 4-31)
Sensitivity setting
1
Press the [SET] button with no workpiece present.
The amplifier is now configured to ignore
changes in received light intensity for the dura-
tion that the [SET] button is pressed.
Calibration is complete after the setting value
flashes momentarily, and then stops (lights up).
When detecting workpieces run-
ning on a conveyor, the [SET] button can be pressed for a longer period
to ignore the fluctuations of received light intensity due to conveyor vibra-
tion.
If the setting value is so low that objects other than the workpiece of interest
are also detected, fine adjustments can be made with the button.
Refer to page 4-2 "Detection Settings (Func)" for setting methods.
When the falling edge detection mode is selected with a thrubeam model:
(1), (3):
The output is OFF because the
received light intensity is not
changing.
(2) :
The output is ON because the
received light intensity is decreasing.
(4) :
The output remains OFF because
the received light intensity is
changing but is increasing.
Operation example
(1) (2) (3) (4)
OFF
ON
Control output
Received light intensity
Point
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