anderson controls presents baumer motion control
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Baumer Group Motion Control Confidential and proprietary information. All rights, especially the right to apply for and/or acquire copyright, patent, utility model, design and/or trade mark protection are reserved and remain with Baumer Holding AG. Notice of this information neither constitutes nor induces any right for further use. P.O. Box, Hummelstrasse 17 CH-8501 Frauenfeld © Baumer Group 2008 Baumer Group April 2008 Motion Control EN Page: 2TRANSCRIPT
Motion ControlBaumer Group
Baumer Group April 2008
Motion Control EN
Page: 2
Title: DLR Motion Control Author: Alex Gasser
Address: Baumer Holding AGP.O. Box, Hummelstrasse 17CH-8501 Frauenfeldwww.baumergroup.com
Geheim zu haltende Information. Alle Rechte an dieser Information, wie Urheber-, Patent-, Gebrauchsmuster-, Design- und/oder Markenrechte verbleiben bei der Baumer Holding AG. Kenntnis von dieser Information lässt Weiterbenutzungsrechte nicht entstehen.
Confidential and proprietary information. All rights, especially the right to apply for and/or acquire copyright, patent, utility model, design and/or trade mark protection are reserved and remain with Baumer Holding AG. Notice of this information neither constitutes nor induces any right for further use.
© Baumer Group 2008
Baumer Group April 2008
Motion Control EN
Page: 3
Motion Controlthe broadest product portfolio worldwide
© Baumer Group 2008
Baumer Group April 2008
Motion Control EN
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Motion Controlthe broadest product portfolio worldwide
• Incremental and absolute encoders• Magnetic sensors• Tachogenerators• Speed switches• Resolver• Signal processing and
accessories
© Baumer Group 2008
Baumer Group April 2008
Motion Control EN
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Motion Controlthe right product for each application
Incremental encoders – manifold and precise• From miniature to HeavyDuty
versions• Hollow shaft and shaft versions• Magnetic or optical sensing• Rectangular- or sine-wave
signals
© Baumer Group 2008
Baumer Group April 2008
Motion Control EN
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Motion Controlthe right product for each application
Absolute encoders – innovative and flexible• All common interfaces• Touchless Multiturn or Multiturn
Generator• Magnetic or optical sensing• Miniature, kit and HeavyDuty
versions
© Baumer Group 2008
Baumer Group April 2008
Motion Control EN
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Motion ControlIncremental and absolute encoders
Baumer can offer you two different technologies:
Optical andMagnetic
Baumer Group April 2008
Motion Control EN
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Motion ControlIncremental and absolute encoders• How does a optical encoder works:
Optical readoutIR-light, transmitted through the pulse disc and the diaphragm, generates digital signals in the Opto-ASIC according to the movement
ElectricalinterfaceDifferent output circuits prepare the encoder signals for the control unit (PLC)
ShaftThe shaft mounted in pre-strained bearings transfers the rotary movement to the pulse disc
Baumer Group April 2008
Motion Control EN
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Motion ControlIncremental and absolute encoders• The heart of the encoders is the diskIncremental
Indicates speed and direction of rotation Indicates angular position (after homing) Resolution is measured in pulses per revolution (ppr) In case of power failure, all position information is lost
Absolute Transmits unique signal for each angular position from 0…360°
(see pulse disk below) Position information is available – always and immediately – even
after power off or power failure No homing (zero reference) needed! No counter in PLC necessary
Baumer Group April 2008
Motion Control EN
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Motion ControlIncremental and absolute encoders
How does the optical readout principle work ?
LED
diodeoutput signal
diaphragm
Baumer Group April 2008
Motion Control EN
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Motion ControlIncremental and absolute encoders
• Incremental output sequenceup to 10’000 pprchannel A / B / Zero and inverted
• Zero pulse reference (I>100 / 42 mm disk)
• Disk and diaphragm material:Glas for maximum precision,nickel or plastics for medium performance
I100
I>100
A
A B
B
N
What are the designs of pulse disk and diaphragm ?
zero pulse (disk and diaphragm)
diaphragm
Baumer Group April 2008
Motion Control EN
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Motion ControlIncremental and absolute encoders• What are the features of the optical encoders?
• Resolution up to 22 bits singleturn and 18 bits multiturn• Temperature range –20…+100°C• Repeatability 0.05°• Error limit ±0.01°• Protection class up to IP 67• Vibration 100 m/s2
Shock 2000 m/s2
Baumer Group April 2008
Motion Control EN
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Motion ControlIncremental and absolute encoders• What are the main features of the magnetic Encoders?• Leading edge technology...
• Magnetic• Singleturn sensing by Hall sensor• Multiturn sensing by reed contact
• Compact and robust...• Simple and space-saving construction• Contact less sensing, no moving parts• Insensitive against shock, vibrations, dirt, moisture• Flexible digital signal processing
Baumer Group April 2008
Motion Control EN
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Motion ControlIncremental and absolute encodersHow does the singleturn sensing work?
• Hall sensor• Electrical current through a plate in a magnetic field
leads to an electrical voltage (Lorentz force)
Baumer Group April 2008
Motion Control EN
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Motion ControlIncremental and absolute encoders
• Digital signal processing and filtering of Hall voltages (DSP)• Functions based on standard hardware and software• Flexible adaption to customer applications possible
How does the singleturn sensing work?
Cross Hall sensor
Baumer Group April 2008
Motion Control EN
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Motion ControlIncremental and absolute encoders
• One permanent magnet for actuation ofHall sensor AND reed contacts
• Electronics buffered by Lithium cell in case of power failure• Permanent monitoring of Lithium cell voltage
How does the multiturn sensing work?
Baumer Group April 2008
Motion Control EN
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Motion ControlIncremental and absolute encoders
• What are the features of the magnetic encoders?• Resolution up to 14 bits singleturn and 18 bits multiturn• Temperature range –20…+85°C• Repeatability 0.3°• Error limit ±0.3°• Protection class up to IP 69k• Vibration 300 m/s2
Shock 1000 m/s2
Baumer Group April 2008
Motion Control EN
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Motion ControlIncremental and absolute encoders
Baumer magnetic multiturn Mechanical multiturn (Competition)
Speed up to 10’000 rpm
Shock resistant up to 200 g
Data storage in EEPROMbuffered by Lithium cell
Alarm signal before breakdown
Speed only up to 6’000 rpm
Shock resistant max. 100 g
Mechanical data storage
Alarm signal not possible
Baumer Group April 2008
Motion Control EN
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Motion ControlIncremental and absolute encoders
Mechanical multiturn (Competition)
Baumer Group April 2008
Motion Control EN
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Motion Control Highest fieldbus competence
© Baumer Group 2008
Baumer Group April 2008
Motion Control EN
Page: 21
Motion Controlthe right product for each application
Magnetic sensors – robust and modular• For linear or rotational movements• Wear-free measurement• Incremental versions with
rectangular- or sine-wave signal output
• Absolute versions with analog, SSI, fieldbus or Ethernet interfaces
© Baumer Group 2008
Baumer Group April 2008
Motion Control EN
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Motion ControlMagneto resistive Sensors• Magnetic encoders for rotary applications
Baumer Group April 2008
Motion Control EN
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Motion ControlMagneto resistive Sensors
Ring magnets
FerritePlasticized ferriteFront or side magnetized
Baumer Group April 2008
Motion Control EN
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Motion ControlMagneto resistive Sensors
• Rotating ring magnet facing the sensor generates output signals
• Provides a full sine and cosine signal per pole
The working principle of rotary magnet encoders
N
N
N
S
S
Baumer Group April 2008
Motion Control EN
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Motion ControlMagneto resistive Sensors• What are the features of the magneto resistive Sensors?
• Resolution up to 4096 imp. Respectively 16384 steps• Temperature range –20…+85°C• Non contact • Repeatability 0.3°• Error limit ±1°• Protection class up to IP 67