Application Note
Magnetic Encoder System (MES)
for Linear Motors AL2xxx
Features
MES consists of a read head with integrated analog hall effects. These hall effects will
analyze the magnetic field of magnet plate and supply an analog output signal.
Signal Period: 24 mm pole pitch
Output Signal: 1 Vpp, Sine-Cosine
Termination: R = 120 Ohm
Accuracy: < 100 µm
Pre-conditions are precise assembly of magnet plates within
± 20 µm and offset-, phase- and amplitude compensation
within the drive.
Repeatability: < 50 µm
Resolution: 5 - 10 µm
Power supply: 5 VDC
Connection cable: 8-wire, twisted pair, PUR, UL
diameter 3.2 mm, length 3 m
Color code: green SIN +
yellow SIN –
blue COS +
red COS –
brown + 5VDC
white GND
pink + 5V sense
grey GND sense
shield PE / GND
Titel Magnetisches Encoder System
MES für Linearmotoren
Nummer Baugruppe
Verfasser Christian Mische Firmware
Datum 01. September 2005 Funktion
Baureihe AL2xxx
Magnetic Encoder System (MES) Page 2
for Linear Motors AL2xxx
Wiring for AX2000 / AX2500 and AX5000:
MES
Signal color
SIN + green
SIN - yellow
COS + blue
COS - red
+ 5 VDC brown
+ 5 V sense pink
GND white
GND sense grey
Link between 4 - 12 and 2 - 10!
Necessary coupling connector: ZS4000-2051 (Service Pack). By using this standard
encoder cable for AM2000 / AM3000 can be used.
AX2000 / AX2500 AX5000 (X11 / X21)
Pin Pin
11 1
3 9
9 3
1 11
4 4
12 12
2 2
10 10
Connection
AX2000 to X1 and AX2500 to X2.
Dimension
Front view Side view
Dimension:
Length (direction of move): 55 mm
Width: 50 mm
Hight: 30 mm
Direction of move
Magnetic Encoder System (MES) Page 3
for Linear Motors AL2xxx
Assembly
Magnetic Encoder System (MES) Page 4
for Linear Motors AL2xxx
Feedback setup
BECKHOFF servo drives will be delivered with pre configured settings. To adapt it to
your application and your equipment BECKHOFF Software Tool Drive can be used.
Settings for MES:
• Encoder feedback to function 7 SinCos W&S
Commutation of the motor will be done by small moves / vibrations (Wake &
Shake) of the motor shaft. This happens after first enable (Enable).
• Enclines to "1"
This is one sine period per electrical turn.
• Band width: default 600
With higher band width drive will react faster to offset => smaller lag distance at
acceleration. A higher band width only makes sense for small inertia, small KP
and very high acceleration. Smaller band width will be like a filter, Speed and
position offset will be more smooth.
"Graphica" Setup:
Magnetic Encoder System (MES) Page 5
for Linear Motors AL2xxx
Appendix
BECKHOFF Support & Service
Beckhoff and their partners around the world offer comprehensive support and service,
guaranteeing fast and competent assistance with all questions related to Beckhoff
products and system solutions.
Beckhoff support and service is available to you wherever you are in the world, and can
be reached by telephone, fax or e-mail. The contact addresses for your country may be
found in the list of Beckhoff branches and partner companies.
BECKHOFF Support
Hotline: + 49 (0) 5246/963-157
Fax: + 49 (0) 5246/963-9157
E-Mail: support@beckhoff.com
BECKHOFF Service
Hotline: + 49 (0) 5246/963-460
Fax: + 49 (0) 5246/963-479
E-Mail: service@beckhoff.com
BECKHOFF Headquarters
BECKHOFF Industrie Elektronik
Eiserstr. 5
33415 Verl
Germany
Phone: + 49 (0) 5246/963-0
Fax: + 49 (0) 5246/963-198
E-Mail: info@beckhoff.de
Web: www.beckhoff.de
For international support & service in your area please look on http://www.beckhoff.de
Support.
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