QS18VN6AF100Q5 BANNER ENGINEERING, QS18VN6AF100Q5 Datasheet - Page 3

• Manufacturer Part Number: QS18VN6AF100Q5
• Description: Photoelectric Sensor
• Manufacturer: BANNER ENGINEERING
• Series: QS18 Adjustable-Fieldr

Specifications of QS18VN6AF100Q5

• Output Current: 100mA
• Sensor Output: NPN
• Supply Voltage Range Dc: 10V To 30V
• Sensor Housing: Rectangular
• Sensing Range Min: 0mm
• Sensor Input: Optical
• Supply Voltage Max: 30VDC

Figure 4. Set cutoff distance approximately
Banner Engineering Corp. • Minneapolis, MN U.S.A
www.bannerengineering.com • Tel: [phone]
R1
R2
midway between the farthest target
and the closest background
E
Target
Distance
Cutoff
Background
WORLD-BEAM
Background Reflectivity and Placement
Avoid mirror-like backgrounds that produce specular reflections. False sensor re sponse will
occur if a back ground surface reflects the sensor’s light more strongly to the near detector
(R1) than to the far detector (R2). The result is a false ON condition (Figure 5). Use of a
diffusely-reflective (matte) background will cure this problem. Other possible solutions are to
angle either the sensor or the background (in any plane) so that the back ground does not
reflect light back to the sensor (see Figure 6). Position the background as far beyond the
cutoff distance as possible.
An object beyond the cutoff distance, either stationary (when po si tioned as shown in Figure
7) or if it moves past the face of the sensor in a direction perpendicular to the sensing axis,
can cause unwanted triggering of the sensor if it reflects more light to the near detector than
to the far detector. The problem is easily rem e died by rotating the sensor 90° (Figure 8).
The object then reflects the R1 and R2 fields equally, resulting in no false triggering. A better
solution, if possible, may be to reposition the object or the sensor.
Figure 5. Reflective background – problem
Figure 7. Object beyond cutoff – problem
A reflective background object in this position or
moving across the sensor face in this axis and
direction may cause false sensor response.
R1, R2,E
E
R1 = Near Detector
R2 = Far Detector
R2
R1
E
= Emitter
R2
R1
E
Core of
Emitted
Beam
Sensing
Field
Strong
Direct
Sensing
Reflection
to R1
Sensing
Field
Field
®
QS18 Adjustable-Field Sensors
Cutoff
Distance
Distance
Cutoff
Reflective
Background
R2
R1
E
Figure 8. Object beyond cutoff – solution
Figure 6. Reflective background – solution
A reflective background object in this position
or moving across the sensor face in this axis
will be ignored.
R1, R2,E
E
R1 = Near Detector
R2 = Far Detector
= Emitter
R2
R1
R2
R1
E
E
Core of
Emitted
Beam
Sensing
Sensing
Sensing
Field
Field
Strong
Direct
Reflection
Away From
Sensor
P/N 66981 rev. G
Distance
Cutoff
Cutoff
Distance
Reflective
Background
3