Rockwell Automation 42QA ColorSight Series 9000 Photoelectric Sensors - Manual (Page 11)

ColorSight Series 9000 PHOTOSWITCH R Photoelectric Sensor 11
75027--031--01(A), November 1999
2. Color Plus Intensity which measures the absolute RGB values.
The selection of one of these modes is made by toggling dip switch
S4. For most applications, the Color Only mode will be suitable. When
minute changes in target color must be recognized the Color Plus
Intensity mode should be used.
4. Set the sampling rate, S5
ColorSight can be configured to operate at one of two fixed sampling
rates. The factory default setting is (AV), or, averaging mode. In this
mode the sensor will take multiple samples of the target and average
the results for further processing. This type of operation is ideal for
textured targets such as lumber and fabric. For smooth targets such as
plastic, metal, or glass, selection of the (SG), or single sample,
operating mode will yield acceptable results.
5. Set gating or remote learn operation, S6
A fifth lead (white) is provided on the sensor for use as either a gating
input or remote learn input. The function of this lead is determined by
the position of dip-switch S6. The factory default setting for S6 is LRN
which will set this function for remote learn. In this mode, the sensor’s
self-teach will be activated whenever a momentary (at least 120ms)
signal is applied to this lead. Acknowledgement of a successful learn,
will be indicated by an active output on the orange fault lead. This lead
may be tied to a PLC or pilot light for visual indication. In the event that
the learn was not successful, this output will be inactive.
With dip-switch S6 in the (GT) position, the white lead will serve as a
gating input. In this mode, the sensor output will be enabled only when
this input is active (logical AND).
6. Congratulations, the sensor is now ready to learn the target color.
7. Apply power to the sensor.
8. Position the target 27mm from and perpendicular to the fiber optic
head. Ensure that the target color fill the entire spot size provided by
the sensor.
9. For local self--teach operation follow step 10, otherwise, follow step 11.
10. Momentarily depress the LRN pushbutton. The yellow LED will flash
indicating that the sensor is “learning” the target. With the pushbutton
released, the yellow and red LED will turn OFF indicating a successful
learn. If the yellow LED turns OFF, but the red LED turns ON then the
learn was unsuccessful.
11. Applying a momentary (at least 120ms) signal of to the white lead of
the sensor has the same effect as depressing the LRN pushbutton.
Acknowledgement of a successful learn will be indicated both locally
and via the orange diagnostic lead. Note that the fault output remains
active with the exception of an unsuccessful learn and during the learn
process.