Rockwell Automation 42QA ColorSight Series 9000 Photoelectric Sensors - Manual (Page 15)

ColorSight Series 9000 PHOTOSWITCH R Photoelectric Sensor 15
75027--031--01(A), November 1999
Troubleshooting
Green LED does not
illuminate Ensure power is connected to the sensor.
Target cannot be
learned Ensure fiber optic cables are securely
seated in sensor cavity.
Ensure emitter (blue) side of fiber optic
cable is inserted in the emitter cavity
(blue).
Ensure the fiber optic head is 27mm (plus
tolerance) over and perpendicular to the
target.
Ensure fiber optic cable is not damaged
by checking the spot size for intensity.
Ensure the target being sensed is not
directly over high-frequency fluorescent
lighting.
Targets with glossy surfaces may require
positioning the fiber optic cable head at an
angle to prevent interference from
reflections.
Target is learned but
color discrimination is
not consistent over time Ensure target color, shape, and distance
to fiber optic LED are consistent. If target
surface is textured such as textiles or
lumber, ensure that the Average mode is
being used. Single operating mode is best
used for smooth surfaces such as metal
or glass.
Ensure the proper operating mode is
activated. Color only mode is intended for
targets with large contrast, i.e., blue vs.
red. Color Plus Intensity mode is best for
targets with little contrast, i.e., light red vs.
medium red. Ensure ambient temperature
is within operating temperature and
tolerance of the sensor.