Sensitivity setting
Diffuse reflection sensors are usually operated in the light-on mode. An
object reflects the light beam to the diffuse reflection sensor and
switches the output. In most applications maximum sensitivity can be
used for operation. The settings described below will only become nec-
essary if an object is to be detected against a highly reflective back-
ground.
• Set the sensitivity to its minimum by turning the "Range" poten-
tiometer "counter-clockwise until you hear a click. Place the object
to be detected in front of the sensor.
• Turn the potentiometer for the sensitivity setting clockwise until the
yellow LED (output) is just lit.
• Remove the object to be detected.
• Turn the potentiometer for the sensitivity setting clockwise until the
yellow LED (output) is just lit and count the number of revolutions.
• Turn the potentiometer for the sensitivity setting back counter-
clockwise by half of the revolutions counted before.
• For selecting the light-on or dark-on mode, set the slide switch to
the requested operating mode.
If the yellow LED does not go out, the contrast in the application is not
sufficient. Proceed as follows:
• Change the angle of the diffuse reflection sensors by a few degrees.
• Darken the background to reduce interfering reflections.
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