Banner Q5X - Additional Information; Dual (Intensity + Distance) Mode; Dual Mode Reference Surface Considerations

July 25, 2023
Q5X With Dual Discrete Outputs And IO-Link Instruction Manual
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Chapter Contents
Dual (Intensity + Distance) Mode ...................................................................................................................................................................... 49
Dual Mode Reference Surface Considerations................................................................................................................................................. 49
Dual Mode Considerations for Clear and Transparent Object Detection .......................................................................................................... 50
Abbreviations.................................................................................................................................................................................................... 51
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Dual (Intensity + Distance) Mode
DualTEACHmode,dualintensity+distancewindow,expandstheapplicationstheQ5Xcansolvebycombiningdistance
baseddetectionwithlightintensitythresholds.
Inbackgroundsuppression(DYN,1pt,2pt)andforegroundsuppression(FGS)TEACHmodes,theQ5Xsensorcompares
changes in the measured distance between the sensor and target to control the output state. In dual TEACH mode, the user
teachestheQ5X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Q5Xrequiresareferencesurface(farleft).Oncetaught,thedistanceandintensityofthereferencesurface
are recorded and used as a baseline. A user-adjustable switching threshold is set, and changes in distance and/or intensity
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 default-switching
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reflec
tion(farright).
Dual Mode Example
Reference Condition
0
0
Change in Intensity
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0
Output switches with intensity change
Change in Distance
0
0
Output switches with distance change
0
0
Output switches with intensity and distance change
Reduced Intensity and/or Second Peak
0
0
Output switches with intensity and/or second peak (Clear Object Detection)
TheQ5Xsensorcanbetaughtnonidealreferencesurfaces,suchassurfacesoutsideofthesensor’srange,verydarksur
faces,orevenemptyspace.Thesesituationsmayenableapplicationsrequiringalongrangedetectionbutaresubjecttotyp
icaldiffusemodedetectionchallenges.
Dual Mode Reference Surface Considerations
Optimizereliabledetectionbyapplyingtheseprincipleswhenselectingyourreferencesurface,positioningyoursensorrela
tivetothereferencesurface,andpresentingyourtarget.
TherobustdetectioncapabilitiesoftheQ5Xallowssuccessfuldetectionevenundernonidealconditionsinmanycases.Typ
icalreferencesurfacesaremetalmachineframes,conveyorsiderails,ormountedplastictargets.ContactBannerEngineer
ingifyourequireassistancesettingupastablereferencesurfaceinyourapplication.
Additional Information
Chapter 6
Selectareferencesurfacewiththesecharacteristicswherepossible:
1.
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