768
Positioning Systems
5
Positioning Systems,
Inductive Positioning Systems
5
.1
Positioning Systems,
Distance Measurement Devices
5
.2
Positioning Systems,
Position Encoding System
WCS
5
.3
Positioning Systems,
Data Matrix Positioning System
PCV
5
.4
Positioning Systems,
Electronic CAM-Switch Controller
PAX
5
.5
Positioning Systems,
Accessories
5
.6
Germany: +49 621 776-4411
Consider the General Notes on the Information in the Pepperl+Fuchs Product Catalogs
Pepperl+Fuchs Group
fa-info@de.pepperl-fuchs.com
USA: +1 330 486 0001
fa-info@us.pepperl-fuchs.com
Singapore: +65 6779 9091
fa-info@sg.pepperl-fuchs.com
Copyright Pepperl+Fuchs
Optical Position Encoding Systems WCS and PCV
Position encoding systemWCS
The automation of material handling systems requires information about
the moving vehicle or forklift truck that is accurate to the millimeter. The
position encoding systemWCS by Pepperl+Fuchs provides the operator
with a reliable and proven positioning system. The WCS combines two
important characteristics: noncontact technology and absolute position-
ing. You need just two components for positioning within your applica-
tion–the read head and the code rail.
The read head
The U-shaped read head is used for noncontact optical scanning of the
code rail. This enables the position encoding system to detect a new po-
sition value every 0.8 mm. Position values are determined regardless of
temperature fluctuations and in real time, even at high travel speeds. The
read heads have an internal light intensity regulation function.This allows
the position value to be determined accurately even in harsh ambient
conditions.
The mounting base is a special mechanical head support that enables
the read head to be installed quickly. No adjustments are necessary.
The data is transferred directly from the read head to the control unit via a
serial RS485, SSI, or CANopen interface. A wide range of interface mod-
ules are available for connecting to bus systems, such as PROFIBUS DP,
PROFINET RT, MODBUS/RTU, DeviceNet, or Interbus S.
The code rail
The code rail–which carries absolute path information–is positioned par-
allel to the travel path and assigns a clear and exactly reproducible posi-
tion at each point of the travel path. In addition to branches and curves, it
is also possible to install the code rail only where positioning is required.
Bracketry is available for quickly mounting the code rail, which is supplied
in stainless steel or laminated plastic.
Intelligence on rails: precise, flexible, noncontact, and absolute position
feedback!
Outstanding features ...
•
Absolute measuring type
•
No reference points
•
Variable path lengths up to 325 m
•
Noncontact
•
Resolution = 0.8 mm
...
proven in many applications
•
Automatic cranes
•
Elevators
•
Moving vehicles
•
Rotating cranes
•
Lifters
Data Matrix positioning system PCV
The Data Matrix positioning system uses individual Data Matrix codes
arranged beside and above one another in the form of a code reel that
serves as an information carrier. The PCV read head uses modern cam-
era technology to detect codes two-dimensionally, which are then decod-
ed and finally output as an exact position in an X and Y direction.
The data bits of the Data Matrix code are divided into two dimensions and
provide a high degree of data density over a small surface area.
The PCV read head and the Data Matrix code reel together are suitable
for a wide range of positioning tasks in all applications. The unique code
reel is available in lengths of up to 10 km and is ideal for use in material
handling, the automotive industry, elevator technology, and general ma-
chine construction. Several Data Matrix code lines on the reel can also
be used to evaluate the vertical position. Benefit from the many years of
practical experience that Pepperl+Fuchs has acquired in the area of Data
Matrix technology and position detection.
Always in focus: the read head unit with power illumination and two-row
Data Matrix code reel
Benefits
•
Positioning along two axes
•
High mechanical robustness, no moving parts
•
Long service life as no laser diodes are used
•
Insensitive to dirt and damage to the code reel
•
Consistent laying of the code reel
•
Extremely narrow code reel
•
Small read field enables the smallest curve radii and inclines
•
Event markers for generating control signals
•
DC output and input signals can be activated at freely
selectable positions
•
Camera parameterization using a PC or code cards
Application examples
Monorail conveyor
The Data Matrix code reel is affixed directly above the power rails and
the PCV read head attached to the hanger. Each hanger is optimally po-
sitioned.
Skid conveyor
The simple attachment of the code reel and its insensitivity mean that
the PCV system is ideal for positioning skids, in shell constructions for
example.
High-bay warehouse
The Data Matrix positioning system is always the best choice for moving
and positioning in an X or Y-direction.
•
Suitable for curved paths
•
Protected against power
failure
•
Speed up to 12 m/s
•
Easy to maintain
•
Monorail conveyors
•
Stock feeders
•
Galvanic plants
•
Vehicle detection
Positioning Systems
