Related Manuals for Magtrol TM Series
Summary of Contents for Magtrol TM Series
- Page 1 SERIES IN-LINE TORQUE TRANSDUCERS USER MANUAL Via Paolo Uccello 4 - 20148 Milano Tel +39 02 48 009 757 Fax +39 02 48 002 070 info@dspmindustria.it www.dspmindustria.it...
- Page 2 While every precaution has been exercised in the compilation of this document to ensure the accuracy of its contents, MAGTROL assumes no responsibility for errors or omissions. Additionally, no liability is assumed for any damages that may result from the use of the information contained within this publication.
- Page 3 6. Never stand too close or bend over the rotating drive chain. QUALIFIED PERSONNEL Persons in charge of installing and operating the TM Series In-Line Torque Transducer must have read and understood this user manual, paying extra close attention to all safety-related information.
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Page 5: Table Of Contents
2.6 ELECTRONIC SIGNAL PROCESSING 2.6.1 MODEL 3411 - Torque Display 2.6.2 DSP 7000 - High-speed Programmable Dynamometer Controller 2.7 ELECTRICAL CONNECTIONS 2.7.1 Grounding 2.7.2 Connecting Cable 2.7.3 Cable Assembly ER107 (Pigtail Wires) 2.7.4 Cable Assembly ER113 (14-pin Connector) 2.7.5 Connection to Non-Magtrol Electronics... - Page 6 3.2 SPEED CONDITIONING CHAIN 3.3 BUILT-IN SELF-TEST CIRCUIT (B.I.T.E.) 4. MAINTENANCE, REPAIR & CALIBRATION 4.1 MAINTENANCE 4.2 REPAIR 4.3 CALIBRATION 4.4 PACKAGING SERVICES INFORMATION RETURNING EQUIPMENT TO MAGTROL INC. (UNITED STATES) RETURNING EQUIPMENT TO MAGTROL S.A. (SWITZERLAND) REVISIONS TO THIS MANUAL...
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Page 7: Preface
SEMANTICS In this manual, different terminologies may be used to speak about the «TM Series In-Line Torques Trans- ducer». The primary purpose is to make this user manual useful and easy to read. Below you will find different terminology used such as: «In-Line Torque Sensor», «Torque Sensor», «Sensor», «In-Line Torque Transducer», «Transducer»... - Page 8 PREFACE series CONVENTIONS USED IN THIS MANUAL The following symbols and type styles may be used in this manual to highlight certain parts of the text: Indicates information considered important but not hazard related. NOTICE This is intended to draw the operator’s attention to complementary information or advice relating to the subject being treated.
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Page 9: Introduction
The upper part of the unit contains the built-in electronics. This part is sealed according to the IP44 stan- dard and offers protection against splashed water. A Souriau connector allows the torque transducer to be connected to an external signal processing unit - such as the Magtrol MODEL 3411 Torque Display - via a special cable assembly. -
Page 10: Datasheet
Magtrol offers three torque transducer models: basic model (TMB Series), high accuracy (TM Series) and high speed with high accuracy (TMHS). Page 1 / 11 © 2020 MAGTROL | Due to continual product development, Magtrol reserves the right to modify specifications without forewarning. agtrol.co DATASHEET www.magtrol.com... - Page 11 Torque Transducer Fig. 2: TM connected with MODEL 3411 Torque Display and a computer with TORQUE Software Page 2 / 11 © 2020 MAGTROL | Due to continual product development, Magtrol reserves the right to modify specifications without forewarning. DATASHEET www.magtrol.com...
- Page 12 For 20 Nm, Model TM 309 is recommended end) of TM. Effective weight depending on the model is available on request. Page 3 / 11 © 2020 MAGTROL | Due to continual product development, Magtrol reserves the right to modify specifications without forewarning. DATASHEET www.magtrol.com...
- Page 13 Wiring diagram GND Ground BITE (high impedance) Speed signal (open collector) Cable shield Case / Shield Page 4 / 11 © 2020 MAGTROL | Due to continual product development, Magtrol reserves the right to modify specifications without forewarning. DATASHEET www.magtrol.com...
- Page 14 1.3740 a) Center according to DIN 6411-A or DIN 332-D NOTE: 3D STEP files of most of our products are available on our website: www.magtrol.com ; other files are available on request. Page 5 / 11 © 2020 MAGTROL | Due to continual product development, Magtrol reserves the right to modify specifications without forewarning.
- Page 15 2.9508 a) Center according to DIN 332-D NOTE: 3D STEP files of most of our products are available on our website: www.magtrol.com ; other files are available on request. Page 6 / 11 © 2020 MAGTROL | Due to continual product development, Magtrol reserves the right to modify specifications without forewarning.
- Page 16 Splines according to DIN 5481 b) Center according to DIN 332-D NOTE: 3D STEP files of most of our products are available on our website: www.magtrol.com ; other files are available on request. Page 7 / 11 © 2020 MAGTROL | Due to continual product development, Magtrol reserves the right to modify specifications without forewarning.
- Page 17 Center according to DIN 332-D b) Keyway according to DIN 6885-A NOTE: 3D STEP files of most of our products are available on our website: www.magtrol.com ; other files are available on request. Page 8 / 11 © 2020 MAGTROL | Due to continual product development, Magtrol reserves the right to modify specifications without forewarning.
- Page 18 Splines according to DIN 5481 b) Center according to DIN 332-D NOTE: 3D STEP files of most of our products are available on our website: www.magtrol.com ; other files are available on request. Page 9 / 11 © 2020 MAGTROL | Due to continual product development, Magtrol reserves the right to modify specifications without forewarning.
- Page 19 Old housing New housing (fastening from top and bottom) (fastening from bottom only) Page 10 / 11 © 2020 MAGTROL | Due to continual product development, Magtrol reserves the right to modify specifications without forewarning. DATASHEET www.magtrol.com...
- Page 20 Example: TM 312 In-line Torque Transducer high speed version with splined shaft would be ordered as : TMHS 312/X2X. Page 11 / 11 © 2020 MAGTROL | Due to continual product development, Magtrol reserves the right to modify specifications without forewarning. DATASHEET www.magtrol.com...
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Page 21: Installation / Configuration
2. INSTALLATION / CONFIGURATION 2.1 MOUNTING POSSIBILITIES Magtrol TM Series Torque In-Line Torque Transducers must, above all, be considered precision measuring instruments and not torque transmission components. The transducer model and the alignment precision highly influence the measuring precision as well as the operating life of the transducer, especially of the bearings and couplings. -
Page 22: Supported Installation
INSTALLATION / CONFIGURATION series 2.1.2 SUPPORTED INSTALLATION The measuring shaft is supported by the torque sensor housing, which itself is fixed to the test bench frame by means of a support unit ( ). Here, couplings with two degrees of freedom must be used in or- see Fig.2-2 der to avoid hyperstatic mountings. -
Page 23: Parasitic Forces
INSTALLATION / CONFIGURATION series 2.2 PARASITIC FORCES Incorrectly mounted torque transducers can generate parasitic forces on the measuring shaft in radial (F and axial direction (F see Fig.2-4 Suspended installation Supported installation Fig.2-4 Parasitic Forces 2.2.1 RADIAL FORCES (BENDING) Radial forces (F ) generate a bending momentum in the measuring shaft resulting in displace- see Fig.2-4 ment of its center of gravity. -
Page 24: Axial Forces (Thrust)
INSTALLATION / CONFIGURATION series 2.2.2 AXIAL FORCES (THRUST) In suspended installations, pure thrust forces (F ) have practically no effect on the measurement see Fig.2-4 results, as they do not provoke any deformation of the shaft that could influence the measurement. In supported installations, axial thrust forces produce a strain on the bearings. -
Page 25: Measuring Shaft Vibrations
INSTALLATION / CONFIGURATION series 2.3 MEASURING SHAFT VIBRATIONS The presence of radial misalignment in the configuration will give rise to periodic radial displacement of the torque measuring shaft. This, in turn, will induce parasitic vibrations influencing the torque measuring signal. Fig.2-5 Radial displacement 2.3.1 PERMITTED VIBRATIONS ON MEASURING SHAFT The periodic displacement of the measuring shaft generates vibrations. - Page 26 36000 Speed n [rpm] Fig.2-6 Vibratory Acceleration (as a result of radial displacement and rotational speed) Magtrol TM Series Torque Transducers have been tested by under the following conditions: 2.3.1.1 RANDOM VIBRATION ▪ Power spectral density of 0.05 g² / Hz between 20 Hz and 500 Hz ▪...
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Page 27: Torque Signal Conditioning Electronic Circuit
2.3.2 TORQUE SIGNAL CONDITIONING ELECTRONIC CIRCUIT The TM Series Torque Transducer is fitted with a measuring signal conditioning electronic circuit. This con- ditioning chain is based on a carrier frequency system containing a synchronous demodulator and a second-order Butterworth-type low-pass filter. The filter’s cut-off frequency is adjusted by micro-switches (SW1 to SW12) that are accessible by removing the cover of the transducer’s builtin electronics (... -
Page 28: Mounting Limits
2.4 MOUNTING LIMITS Magtrol torque sensors have been designed to accept a decent reserve for measurement over the nomi- nal torque. They can measure up to 200% of their rated torque. It is however important not to overpassed this limit to avoid plastic deformation and permanent deterioration of the sensor’s performances. - Page 29 INSTALLATION / CONFIGURATION series The natural torsional frequency of the drive train is lower due to the presence of the TM NOTICE Torque Transducer. The system’s own natural frequency must then be recalculated to de- termine the influence of the TM Transducer. The torsional spring consists only of the deformation zone of the measuring shaft.
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Page 30: Natural Measuring Shaft Torsional Frequency
INSTALLATION / CONFIGURATION series 2.4.3 NATURAL MEASURING SHAFT TORSIONAL FREQUENCY The natural torsional frequency of the measuring shaft corresponds to the frequency at which a torsional resonance may occur. The following table lists the natural frequency of each TM Torque Transducer. Natural Torsional Frequency MODEL TM 301... -
Page 31: Protective Systems
INSTALLATION / CONFIGURATION series 2.5 PROTECTIVE SYSTEMS ALL ROTATING PARTS MUST BE FITTED WITH A PROTECTIVE SYSTEM TO ENSURE THAT WARNING THE USER, AS WELL AS ALL OTHER SURROUNDING PEOPLE AND OBJECTS, WILL NOT BE INJURED OR DAMAGED AS A RESULT OF THE DRIVE ELEMENT BECOMING BLOCKED, A TORQUE OVERLOAD, OR ANY OTHER POTENTIAL PROBLEM. -
Page 32: Electronic Signal Processing
2.6 ELECTRONIC SIGNAL PROCESSING Magtrol offers electronic processing units that collect signals from its transducers and displays them on an LCD screen. These units have also been designed for digital processing of the measured values. 2.6.1 MODEL 3411 - TORQUE DISPLAY The MODEL 3411 - Torque Display processes the torque and speed signals, displays the measured torque and speed values, and displays the calculated power value. -
Page 33: Dsp 7000 - High-Speed Programmable Dynamometer Controller
Below is an example of a system configuration in which a Magtrol HD Series Dynamometer and TM Series Torque Transducer are used in conjunction with a DSP 7000 Programmable Dynamometer Controller... -
Page 34: Electrical Connections
INSTALLATION / CONFIGURATION series 2.7 ELECTRICAL CONNECTIONS The connecting cable assembly (ER 113-0X) consists of a cable with 4 shielded twisted NOTICE pairs of wires to connect the torque transducer to its signal processing electronic unit. This assembly must be ordered separately. Connecting the TM In-Line Torque Transducer is extremely simple. -
Page 35: Connecting Cable
INSTALLATION / CONFIGURATION series 2.7.2 CONNECTING CABLE The connecting cable to the selected signal processing unit is fitted with a 6-pin connector on the trans- ducer side and a 14-pin connector on the side of the signal processing unit or pigtail wires for cutomized connection ( see Fig.2-19 and Fig.2-20 14 Pin connector... -
Page 36: Connection To Non-Magtrol Electronics
INSTALLATION / CONFIGURATION series 2.7.5 CONNECTION TO NON-MAGTROL ELECTRONICS To connect the Torque Transducer to electronic devices not manufactured by Magtrol, refer to the connec- tion diagram below ( see Fig.2-21 A Differential Amplifier is required for elimination of potential DC voltage developing in the 0 V leg (0 V If there is no Differential Amplifier, a zero shift of the torque signal will occur depending on the resistance and the length of the cable. - Page 37 2.7.5.2 TACHOMETER SIGNAL CONTAINMENT SHIELD Magtrol recommends isolating the «Tacho» signal from other signals by using a separate shielded wire to minimize the noise of the «Tacho» signal that can be injected on the «Torque» signal. Alternatively, Magtrol recommends using ER107 or ER113 cable ( voir Fig.2-22...
- Page 38 INSTALLATION / CONFIGURATION series...
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Page 39: Operating Principles
OPERATING PRINCIPLES series 3. OPERATING PRINCIPLES The TM Series In-Line Torque Transducer can be defined as an inductive transducer operating on the basis of a differential voltage transformer having a variable coupling factor. 3.1 TORQUE TRANSDUCER ARCHITECTURE The part of the transducer effectively measuring the torque is composed of three elements: a shaft with a deformation zone, a pair of coils and two metallic cylinders. -
Page 40: Speed Conditioning Chain
OPERATING PRINCIPLES series 3.2 SPEED CONDITIONING CHAIN A speed transducer is incorporated into the torque transducer housing in order to measure the rotational speed of the measuring shaft. This optical transducer is mounted facing a toothed part of the rotor and produces 60 pulses per revolution. -
Page 41: Maintenance, Repair & Calibration
However, it may be necessary to change the bearings after extended use. The theoretical lifetime of the bearings is 5 000 hours and Magtrol recommends that the bearings be replaced after this time. Bearings should be replaced as soon as they start showing signs of wear. Higher wear occurs when the transducer is operated outside its optimal working conditions. -
Page 42: Repair
The TM 301 to TM 308 are delivered with specific packaging designed to store the sensor while not in use as well as to return the sensor to Magtrol for annual calibration. For this one, please keep the packaging ! -
Page 43: Returning Equipment To Magtrol Inc. (United States)
The table of revisions below lists the significant updates that have been made. REVISION DATES DATE EDITION CHANGE SECTION(S) Updated all informations concerning the new TM Series; Dec. 2020 2nd Edition - rev. A Global update regarding the continuous updates; Global reorganization and new design for the manual May 2017 1st Edition - rev. -
Page 44: Returning Equipment To Magtrol S.a. (Switzerland)
© 2020 MAGTROL | Due to continual product development, Magtrol reserves the right to modify specifications and user manual without forewarning. Via Paolo Uccello 4 - 20148 Milano Tel +39 02 48 009 757 Fax +39 02 48 002 070...