8.3.1.2
Edge height change
The edge height change function supplies a switching signal at the set device output as
soon as there is a change in value between two measured values. A typical application
for this function is counting shingles in printing applications. The device takes on the
complex evaluation tasks carried out by the control system.
The following settings must be configured on the device in order to use the edge height
change function:
•
Select the function on the switching output,
see "Edge height change", page 43
•
Set a fixed cycle time (recommended),
•
Set the minimum and maximum height change,
•
Set the hysteresis (if necessary),
see "Edge height change", page 29
•
Set the change direction (if necessary),
see "Edge height change", page 29
•
Set the cycle offset (if necessary),
Min. / max. height change
The min. / max. height change values define the smallest and largest difference in mm
by which the two measured values must differ in order for there to be an edge height
change. The function only takes into account the difference between two measured val‐
ues and is independent of the absolute distance of the object.
>
Measurement
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>
Application settings
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>
Edge height change
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>
Min. height change
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>
Measurement
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>
Application settings
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>
Edge height change
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Max. height change
>
Parameter
Factory setting
Min. height change:
-9,999.9 mm ... +9,999.9 mm
10 mm
Max. height change:
-9,999.9 mm ... +9,999.9 mm
100 mm
Hysteresis
Hysteresis is the difference in distance between the switch-on and switch-off points.
This is necessary for stable switching when the measured distance fluctuates around
the switching point that has been set. Hysteresis can be configured freely with most dis‐
tance sensors and is stated in mm. More precise logic can be achieved by setting a
lower value. Choose a higher value to ensure more stable switching or reduce the prob‐
ability of a faulty switch.
>
Measurement
>
>
Application settings
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>
Edge height change
>
>
Hysteresis
>
OPERATION VIA DISPLAY
8
8019642/ZJW1/2017-04-03 | SICK
O P E R A T I N G I N S T R U C T I O N S | OD1000
29
Subject to change without notice
