Chapter 9 Additional Information; Dual (Intensity + Distance) Mode - Banner Q5Z Instruction Manual

Q5Z Global Laser Measurement Sensor With IO-Link Instruction Manual
Chapter Contents

9.1 Dual (Intensity + Distance) Mode ................................................................................................................................................................ 31

9.2 Dual Mode Reference Surface Considerations........................................................................................................................................... 32
9.3 Dual Mode Considerations for Clear and Transparent Object Detection .................................................................................................... 32
Chapter 9
Dual (Intensity + Distance) Mode
9.1
Dual TEACH mode, dual intensity + distance window, expands the applications the Q5Z Global can solve by combining dis­
tance­based detection with light intensity thresholds.
In background suppression (DYN, 1­pt, 2­pt) and foreground suppression (FGS) TEACH modes, the Q5Z Global sensor com­
pares changes in the measured distance between the sensor and target to control the output state. In dual TEACH mode, the
user teaches the Q5Z Global a fixed reference surface, and the sensor compares intensity and distance readings against the
reference surface it was taught. After teaching the reference target, the displayed value is calibrated to 100P, or a 100%
match. When an object enters the sensor's field of view, the degree of consistency with the reference surface becomes lower
and causes a change in sensor output.
In dual mode, you can detect when the target is present at the right distance and when it returns the right amount of light.
This is useful in error-proofing applications where you need to know not only that the part is present (distance), but also that it
is the correct part (intensity).
In dual mode, the Q5Z Global requires a reference surface (far left). Once taught, the distance and intensity of the reference
surface are recorded and used as a baseline. A user­adjustable switching threshold is set, and changes in distance and/or in­
tensity outside the switching threshold creates a sensor output change. The example uses a 90% (90P) match condition with
a 10% change in intensity and/or distance from the reference surface required to change the output state. The default­switch­
ing threshold is a 50% match to the reference condition (50P); this sets the threshold 50% from the distance and intensity of
the reference surface. A transparent object can be detected either by a change in intensity, distance, or by a double peak re­
flection (far right).
Dual Mode Example
Figure 24.
Reference Condition
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The Q5Z Global sensor can be taught non­ideal reference surfaces, such as surfaces outside of the sensor's range, very
dark surfaces, or even empty space. These situations may enable applications requiring a long range detection but are sub­
ject to typical diffuse mode detection challenges.
June 23, 2023
Additional Information
Change in Intensity Change in Distance
Output switches with intensity change Output switches with distance change
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© Banner Engineering Corp.
Reduced Intensity and/or Second Peak
Output switches with intensity and distance change Output switches with intensity and/or second peak (Clear Object Detection)
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