KEYENCE BL-600 Series - Manual (Page 82)

Chapter 5 Installation
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5
5.1 Installation of the BL-600 Series
This section describes situations to check for before installing the BL-600 Series,
and the installation procedure.
5.1.1 Situations to check for before installing the BL-600 Series
Check the following points before installing the BL-600 Series.
Avoid extraneous light from entering the transmitter/receiver of the BL-600 Series.
Otherwise, the reading may fail or be unreliable.
If something interrupts the emitted or reflected laser beam, the reading may be
unreliable.
If the laser beam reflects the bar code at a right angle (specular reflection), the
reading may fail or be unreliable.
* Since the BL-650HA/651HA emits a laser beam at an angle of 17 °, tilting the
unit is unnecessary.
Photoelectric sensor
;;
;;
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;;
;
;
;
;
Cut off the
extraneous light. Change the position
of the sensor.
Remedy
Remedy
Light-shielding
object
Remedy
Emitted
laser beam
Change the position of the light-
shielding object to ensure passage
of the laser beam. Reflected
beam
Bar code
Be sure to apply the laser beam at
some angle.
Reflected
laser beam
15 °