Setting the label sensor
2
A Aligning the label sensor
The label sensor evaluates the signal difference between a free glass surface
(specular reflection) and a surface with a label (diffuse reflection). For optimum
adaptation to the conditions, the sensitivity of the label sensor can be adjusted via
the operational control.
Application (typical)
Clear signal difference
between the free glass
surface and the label sur-
face, e.g., paper label
Small signal difference
between the free glass
surface and the label sur-
face, e.g., foil label.
Adjustment via opera-
tional control
Gently turn the operational control (multiturn poten-
tiometer) on the device until the yellow LED no longer
illuminates.
Observation
After adjustment, the label sensor is in a stable OFF
state and shows no faulty switching on the bare glass
surface without label.
If the label is turned into the detection range of the la-
bel sensor, the label sensor detects the label over the
entire length of the label.
NOTICE
Procedure in the event of faulty switching on the glass surface!
Ä
Repeat the adjustment.
Ä
Check whether a stable switching behavior is achieved with a
slightly changed inclination.
4
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