QS30VR3FF200 BANNER ENGINEERING, QS30VR3FF200 Datasheet - Page 3

• Manufacturer Part Number: QS30VR3FF200
• Description: QS30VR3FF200 AC
• Manufacturer: BANNER ENGINEERING
• Type: Fixed Fieldr

Specifications of QS30VR3FF200

• Brand/series: QS30
• Current, Switching: 5 A
• Function: Proximity
• Ip Rating: IP67
• Mounting Type: Threaded
• Output: Relay, SPDT
• Primary Type: Photoelectric
• Range, Measurement: 200 mm
• Sensing Mode: Fixed Field
• Technology: Photoelectric
• Termination: 5-Wire Cable
• Voltage, Supply: 250 VAC/VDC
• Voltage, Switching: 250/125 VAC/VDC

Banner Engineering Corp. • Minneapolis, MN U.S.A.
www.bannerengineering.com • Tel: [phone]
Color Sensitivity
The effects of object reflectivity on cutoff distance, though small, may be important for
some applications. It is expected that at any given cutoff setting, the actual cutoff distance
for lower reflectance targets will be slightly shorter than for higher reflectance targets.
This behavior is known as color sensitivity.
For example, an excess gain of 1 (see page 5) for an object that reflects 1/10 as much
light as the 90% white card is represented by the horizontal graph line at excess gain
= 10. This line intersects the curve at approximately 190 mm. Thus, an object of this
reflectivity results in a far limit cutoff of approximately 190 mm (7.5") for the 200 mm
cutoff model, for example; and 190 mm represents the cutoff for this sensor and target.
The excess gain curves on page 5 were generated using a white test card of 90%
reflectance. Objects with reflectivity of less than 90% reflect less light back to the sensor,
and thus require proportionately more excess gain in order to be sensed with the same
reliability as more reflective objects. When sensing an object of very low reflectivity, it
may be especially important to sense it at or near the distance of maximum excess gain.
Figure 3. Reflective background – problem
Figure 5. Object beyond cutoff – problem
QS30FF
R1 = Near Detector
R2 = Far Detector
E
A reflective background object in this position or
moving across the sensor face in this axis and
direction may cause false sensor response.
QS30FF
R1 = Near Detector
R2 = Far Detector
E
= Emitter
= Emitter
R1
R2
R1
R2
E
E
WORLD-BEAM
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Sensing
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Fixed
Field
Cutoff
Distance
Distance
Cutoff
Moving Object
Reflective
Background
Background
Reflective
or
®
QS30 – Universal Voltage
Figure 4. Reflective background – solution
Figure 6. Object beyond cutoff – solution
A reflective background object in this position or
moving across the sensor face in this axis will be
ignored.
QS30FF
R1 = Near Detector
R2 = Far Detector
E
QS30FF
E
R2 = Far Detector
R1 = Near Detector
= Emitter
= Emitter
E, R2, R1
R1
R2
E
Core of
Emitted
Beam
Fixed Sensing
Field
Sensing
Fixed
Field
Cutoff
Distance
P/N 119166 rev. B
Strong
Direct
Reflection
Away
From Sensor
Cutoff
Distance
Reflective
Background
Moving Object
Background
Reflective
or
3