Banner WORLD-BEAM QS30 Clear Object Sensor - Manual (Page 2)

Banner Engineering Corp. • Minneapolis, MN U.S.A
www.bannerengineering.com • Tel: 763.544.3164 2
P/N 139760 rev. A
WORLD-BEAM
®
QS30ELVC Series
Overview
The QS30ELVC is an easy-to-use, high-performance retroreflective sensor optimized for
detection of clear, translucent, or opaque objects. The optical design of the sensor ensures
reliable detection of PET bottles, glass containers, and optically engineered surfaces such
as mirrors, LCD glass with polarizing films, or semi-conductor wafers. The sensor will not be
tricked by specular reflections from the object under normal operating conditions.
The compact housing has a large, easy-to-see bargraph display for easy configuration
and status monitoring during operation. The sensor housing can be side-mounted, using
integral mounting holes, or front-mounted, via the 30 mm threaded barrel. A wide assortment
of mounting brackets are also available for applications requiring adjustability or robust
mechanical protection.
The QS30ELVC is configured for operation using the Light SET procedure described on page
4. The sensor is simply aligned to the included retroreflective target and the Light SET is
initiated either via the push button or the remote wire input. A reliable detection is assured
when the appropriate threshold for clear, translucent or dark object is selected.
Continued reliable operation is maintained as the thresholds adapt to changing signal levels
over time using Banner Engineering’s auto compensation tracking algorithm. The sensor
tracks the amount of light returned at every opportunity and makes fine adjustments to the
switching threshold as required due to dust or contamination in the environment building up
on the lens window or reflector. If the retroreflector is cleaned, returning the light to its original
level, the sensor quickly adapts and continues operating with no need to perform another
Light SET procedure.
The sensor can recover from a cold power-up by re-using the stored threshold values from the
last Light SET procedure. You only need to perform the Light SET procedure if the sensor is
moved or the sensor to reflector separation distance is changed.
The sensor ships from the factory as a DARK OPERATE (DO), non-polarized retroreflective
sensor with auto compensation enabled for easy set-up and reliable operation. The automatic
compensation tracking algorithm can be disabled if required through the user SETUP buttons
or the remote teach wire.
Indicators
The sensor’s compact housing has a large, easy-to-see bargraph display plus bright
LEDs for easy configuration and status monitoring during operation. Sensor power and
output state are indicated by the green and amber LEDs located at the top of the sensor.
Sensor configuration is indicated by the 5-segment amber display. Signal strength relative
to the switchpoint is indicated by the 3-segment red Signal bargraph (see Figure 2).
Figure 1. Features
Green Power ON LED
Amber Output LED
Switching
Threshold
Bargraph Display (Red)
Configuration
Push Buttons
Configuration Display
(Amber)
Clear Medium Dark
Received light level is greater
than switching threshold
8-16% of light SET level is being blocked
> 16% of light SET level is being blocked
Figure 2. Signal strength relative to the switchpoint
16-32% of light SET level is being blocked
> 32% of light SET level is being blocked
32-64% of light SET level is being blocked
> 64% of light SET level is being blocked
Received light level is greater
than switching threshold
Received light level is greater
than switching threshold