Overview
Amber LED
(Output Indicator)
Green LED
(Power Indicator)
Push Button
The Banner QS18 sensor is a high performance clear object detection
sensor. The polarized coaxial optical design ensures reliable detection of
transparent, translucent, and opaque targets at any distance between the
sensor and the reflector. Low contrast sensing applications include PET
bottles, glass containers, and shrink wrap. The sensor can also be used to
detect optical surfaces such as: LCD panels with built in polarizing films,
solar panels, and semiconductor wafers.
Indicators (Two LEDs: One Green, One Amber)
Sensor Condition (Run Mode)
Green LED
Amber LED
Output OFF
ON
OFF
Output ON
ON
ON
Notification — Sensor needs to be reconfigured
for reliable detection
Flashing at 5 Hz
ON/OFF
Notification — Push button has been locked out
Flashes 4 times and
returns to solid on
ON/OFF
Installing and Mounting the Sensor for Low Contrast Applications
Reliable transparent object detection depends on the sensor always detecting the object as "dark state" and the reflector as the
"light state". Using a recommended reflector, and proper orientation of the sensor to the reflector, is key to good clear object
detection. Optimize the reliable detection of transparent and clear objects by applying the following steps when mounting the
sensor and selecting a retroreflective target.
1. If a bracket is needed, mount the sensor onto the bracket.
2. Mount the sensor (or the sensor and the bracket) to the equipment at the desired location. Do not tighten at this time.
3. Align the sensor's light spot to the middle of the retroreflector.
4. Mount the retroreflector perpendicular to the sensor optical axis (± 5°).
5. Tighten the screws to secure the sensor (or the sensor and the bracket) to the aligned position.
Mounting Considerations for Opaque Objects with Mirror Like Surfaces
To minimize the potential for reflections from mirror like objects affecting the sensor, it is best to side mount the sensor.
Wiring Diagrams
NPN
Load
10-30V dc
Remote
Programming
(N.O.)
1
3
4
2
PNP
Load
10–30 V dc
Input Wire
Key
1. Brown
2. White
3. Blue
4. Black
Sensor Configuration
Sensor configuration can be implemented with the push button or the remote program wire. Configuration options include two
sensing modes: Light Set and Dark Set. Configuration options include the features shown in Push Button Input Flowchart and
Remote Input Flowchart.
WORLD-BEAM QS18E Clear Object Detection
2
www.bannerengineering.com - Tel: +1-763-544-3164
P/N 194469 Rev. C
