Page 650 - Sensors and Systems - North American Catalog
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Ultrasonic Sensors
3
Ultrasonic Sensors,
Thru-Beam Sensors,
cylindrical
3
.2
Ultrasonic Sensors,
Diffuse Mode Sensors,
cylindrical
3
.1
Ultrasonic Sensors,
Thru-Beam Sensors,
rectangular types
3
.2
Ultrasonic Sensors,
Diffuse Mode Sensors,
rectangular types
3
.1
3
.3
3
.3
Ultraschallsensoren,
Ultrasonic Sensor Accessories
3
.4
Ultrasonic Sensors,
Speciality Models,
cylindrical
Ultrasonic Sensors,
Speciality Models,
rectangular types
648
Germany: +49 621 776-4411
Refer to General Notes Relating to Product Information
Pepperl+Fuchs Group
USA: +1 330 486 0001
Singapore: +65 6779 9091
Copyright Pepperl+Fuchs
Ultrasonic Sensors
Introduction
Ultrasonic retroreflective sensor
The emitter and receiver are located in the same housing. The ultrasonic
beam is reflected by a fixed reflector. Objects entering the sensing range
are detected by changes in the measured distance.
Features:
•
Simple installation, just one sensing head
•
Reliable detection of problematic objects (sound-absorbing objects,
angled surfaces)
Ultrasonic thru-beam sensor
The emitter and receiver are separate and mounted facing each other. If
the ultrasonic beam is broken by an object, the switch output is activated.
Features:
•
Wide separation between emitter and receiver, up to 6 meters
•
Low susceptibility to interference, suitable for difficult operating
conditions
•
Fast response times
•
Two separate units to wire
Ultrasonic double sheet detection
Ultrasonic double sheet detection involves thru-beam sensors, consisting
of an ultrasonic emitter and receiver with integrated evaluation algorithms
optimized especially for these applications:
•
Double sheet control
•
Label detection
•
Adhesive strip detection
•
Double feed detection
Double sheet control can detect three different states:
•
No sheet
•
Single sheet
•
Double sheet
During detection of labels and splices, the system can distinguish the tag
material from the labels and the adhesive strip from the basic material.
Double feed detection is similar to double sheet control and distinguishes
between no, one, or two instances of a material (e.g., sheet metals, plastics,
and cardboards).
2. Output function
Analog distance measurement
The sensor determines the distance to an object by measuring the time
interval between sending an ultrasonic signal and the arrival of the reflected
echo. The sensors operate in diffuse mode. Depending on the model,
different analog outputs are available:
•
Analog voltage: 0 V ... 10 V
•
Analog current: 4 mA ... 20 mA
•
Serial: RS232
•
IO-Link
Switch point mode
On sensors with two independent switch points, the output is activated if the
object is located within the respective switching area.
This switch point can be set using Teach-in or a potentiometer.
Switching point 1
Object
Switching point 2
Sensor
Blind zone A1 active
A2 active
Window mode
The window mode monitors the beginning and ending points of an active
sensing window. The window limits are configurable.
Window limits A1
Object
Window limits A2
Sensor
Normally
open
Normally
closed
Blind zone
Output
passive
Output
passive
Output
active
Output
active
Output
active
Sensing range
Output
passive
