Banner QL50 User Manual

QL50 Luminescence Sensor

LISTED

US

!

Compact, self-contained luminescence sensor

Features

• Compact, self-contained design

• Senses luminescent marks, even on luminescent backgrounds and on reflective
surfaces, such as ceramic, metal, or mirrored glass

• Easy-to-set programming options for sensing precision and fine detection

• Low cost

• 2 indicator LEDs show operating and output status

• Fast 250 microsecond sensing response time

• NPN or PNP discrete output, depending on model

• Output OFF-delay option for longer ON condition

• 3-position swivel QD connector

Models

Model Cable/Connector* Supply Voltage Output type Sensing Range

QL50AP6XD20BQ

QL50AN6XD20BQ

* Mating cable required; see page 8 for cable options.

WARNING . . .

Never use these products as sensing devices for personnel protection. Doing so could lead to serious injury or death.

These sensors do NOT include the self-checking redundant circuitry necessary to allow their use in personnel safety applications. A
sensor failure or malfunction can cause either an energized or de-energized sensor output condition. Consult your current Banner Safety Products
catalog for safety products which meet OSHA, ANSI and IEC standards for personnel protection.

4-pin Euro-style (M12)

QD connector with

3-position swivel

Not To Be Used for Personnel Protection

10 to 30V dc

PNP

NPN

0 to 40 mm

(0 to 1.57")

Printed in USA 03/05 P/N 112151 rev. C

QL50 Luminescence Sensor

SET

Yellow Output LED
ON: Output conducting

Bicolor Power LED
ON Green: Power ON
Flashing green: Fine Mode
Flashing Red/Green: Error

Push Button

Overview

The QL50 Series Sensor is an easy-to-use, compact luminescence sensor that emits
ultraviolet light from an LED and scans for luminescence in materials. The QL50
senses luminescence that is inherent in a material, or it can sense luminophores that
have been added to a material in process to make it luminescent.

The sensor’s compact size allows it to be mounted almost anywhere. Configuration
options include teachable sensing precision and fine-detection programming for
accurate sensing of a wide range of luminescence intensities and background
conditions.

The QL50 is available with either NPN or PNP output. The sensor has one push button
for easy programming. Two LEDs provide power, error, and output information for easy
monitoring during operation. See Figure 1.

Luminescence Sensing

Luminescence sensing detects a form of electromagnetic radiation, caused by the
shining of UV light (“black” light, invisible to the human eye) on a luminescent
substrate material, such as an adhesive. When the UV light shines on the adhesive,
the light “excites” electrons in the material (effecting a change of state), causing it
to reflect visible light. Thus an invisible light source can produce a visible reflection.
Because it emits UV light but detects visible waves, the sensor can distinguish between
the fluorescent material and other highly reflective materials.

Cost Factors

When comparing luminescence sensors to make a selection, it is important to consider
whether luminophores must be added to the product sensed, in order for the sensor
to detect luminescence. Generally speaking, the more sensitive the sensor, the lower
the level of luminescence required for detection. Less sensitive (and usually less
expensive) sensors may require an additional step in the production process, and a
substantial cost over time, to add luminophores. For information on additional, more
sensitive luminescence sensor models, refer to data sheet p/n 112153, Model QL55
Luminescence Sensor, or contact a Banner applications engineer for more information.

Sensor Programming

The QL50 Sensor is pre-set to power up in RUN mode and sense a luminescent target.
Applications with varying degrees of luminescence or with background luminescence
may require additional programming:

Figure 1. QL50 Luminescence Sensor

features

• The Quick-Set procedure programs the sensor to detect a luminescence intensity
brighter than the background (see page 3).

• The Fine-Detect procedure increases sensing precision and programs the sensor
to detect a luminescence intensity that is either more or less luminescent than the
background (see page 4).

Programming Errors

If a programming error occurs, the bicolor Power LED flashes red and green. To
correct a programming error, reset the sensor to the factory settings as follows:

1. Remove all luminescent objects from the sensing range.

2. Press and hold the push button (approx. 2 sec.) until the green Power LED turns

2 P/N 112151 rev. C

OFF.

Banner Engineering Corp. • Minneapolis, MN U.S.A.

www.bannerengineering.com • Tel: [phone]

QL50 Luminescence Sensor

Output OFF Output ON

Background

Condition

Target
Object

Condition

Least
Luminescent

Most

Luminescent

T

TTT

T T

T T T

T T

T T

T

T T

T T

T

≈10 seconds

≈10 seconds

≈ 4 seconds

≈ 4 seconds

≈ 2 seconds

≈ 2 seconds

T

SET

SET

SET

SET

Remote Programming and Push-Button Lockout

The remote line allows programming with a remote switch. It can also be used to lock
out the push button, preventing unwanted tampering with the push button. Connect
the white remote wire to 0V if not used.

• To disable the push button and the remote program wire, connect the white remote
wire to high supply potential (+V dc), then power the sensor ON.

• To program the sensor using the remote line, connect a normally open (N.O.) switch
between the white remote wire and high supply potential (+V dc), then power the
sensor ON. This enables remote programming.

• To enable the push button, turn the sensor power OFF, remove the white wire from
high supply, and then turn sensor power ON.

Quick-Set Programming

Quick-Set programming teaches the QL50 Sensor to respond to a specific
luminescence intensity and ignore less-intense luminescence conditions. The
programmed setting will be light operate; the sensor will respond to an equivalent or
more luminescent condition.

Sensing the luminescent target will close the normally-open output, turn the yellow

Figure 2. Quick-Set programming

Output LED ON, and cause the output to conduct current (see Figure 2).

Procedure

Push Button Remote Line

• Position luminescent target
for sensing.

Target

Position

• Press and hold push
button (approx. 2 sec.)

Program

LED turns OFF, then release.

until green Power

Sensor

*The Yellow LED may be ON or OFF, depending on target and range.

**The Green LED may go OFF if a target is presented at the sensor threshold.

• Position luminescent target for
sensing.

• Hold remote line (white wire)
high (approx. 2 sec.) until
green Power LED turns OFF,
then release.

Result

Yellow Output LED: ON (or OFF*)
Green Power LED: ON (or OFF**)

Yellow Output LED: OFF, then ON
Green Power LED: OFF, then ON

Sensor returns to RUN mode

Banner Engineering Corp. • Minneapolis, MN U.S.A.

www.bannerengineering.com • Tel: [phone]

P/N 112151 rev. C 3