Magtrol TM 300 Series User Manual

In-line torque transducers
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TM 300 Series
In-Line Torque Transducers
User's 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

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Summary of Contents for Magtrol TM 300 Series

  • Page 1 TM 300 Series In-Line Torque Transducers User’s 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, Inc./Magtrol SA 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: Safety Precautions

    When planning, configuring and operating the torque measurement drive train. 1. Make sure that all Magtrol electronic products are earth-grounded, to ensure personal safety and proper operation. 2. Check line voltage before operating electronic equipment. 3. Make sure that all rotating parts are equipped with appropriate safety guards.
  • Page 4: Revisions To This Manual

    1st Edition - rev. C Updated: Figure 2–3 Parastic Forces 1.3.2, 2.2.1, 2.2.2 12.18.07 1st Edition - rev. B New transducer model: TM 309 and 2.4.3 01.10.07 1st Edition - rev. A Added information regarding connection to non-Magtrol electronics. 2.7.3...
  • Page 5: Table Of Contents

    Model 6400 Torque Transducer Display ....................... 30 2.6.3 Model DSP6001 Programmable Dynamometer Controller ................31 2.7 ELECTRICAL CoNNECTIoNS ..........................32 2.7.1 Grounding ..............................32 2.7.2 Connecting Cable ............................33 2.7.3 Connection to Non-Magtrol Electronics ....................... 34 3. operating prinCiples .......................36 3.1 ToRqUE TRANSDUCER ARChITECTURE ......................36...
  • Page 6: Table Of Figures

    Figure 2–17 Common Grounding ..........................32 Figure 2–18 6-pin Souriau Connector Configuration ....................33 Figure 2–19 14-pin Centronics Connector Configuration ..................33 Figure 2–20 Wiring Diagram for Connection to Non-Magtrol Electronics ..............34 Figure 2-21 ER 107 Pin Configuration ........................35 3. operating prinCiples Figure 3–1 TM Torque Transducer Principal Elements ....................36...
  • Page 7: Preface

    Preface purpose of this manual This manual contains information required for the installation and general use of Magtrol’s TM Series In-Line Torque Transducers. To achieve maximum capability and ensure proper use, please read this manual in its entirety before operating the unit. Keep the manual in a safe place for quick reference whenever a question should arise.
  • Page 8 Preface Magtrol TM Series In-Line Torque Transducers Conventions used in this manual The following symbols and type styles may be used in this manual to highlight certain parts of the text: Note: This is intended to draw the operator’s attention to complementary information or advice relating to the subject being treated.
  • Page 9: Introduction

    TM for high-precision applications and TMhS for high-speed applications. The TM 300 Series includes transducers with the following torque ratings: 0.1 N·m, 0.2 N·m, 0.5 N·m, 1 N·m, 2 N·m, 5 N·m, 10 N·m, 20 N·m, 50 N·m, 100 N·m, 200 N·m, 500 N·m, 1 000 N·m, 2 000 N·m, 5 000 N·m and 10 000 N·m.
  • Page 10: Data Sheets

    Chapter 1 – Introduction Magtrol TM Series In-Line Torque Transducers data sheets TM 301 – TM 308 Data Sheet 1.3.1 TM 301 – TM 308 TM 301 – TM 308 In-Line Torque Transducers Features • Integrated Torque and Speed Conditioning • Torque Range: 0.1 N·m to 20 N·m (0.07 lb·ft to 15 lb·ft) • Accuracy: < 0.1% •...
  • Page 11 Magtrol TM Series In-Line Torque Transducers Chapter 1 – Introduction Specifications TM 301 – TM 308 moDel ratings The ratings in the following table apply to all Torque Transducer series (TM, TMHS and TMB). Nominal Rated Torque Torsional Stiffness Moment of Inertia Weight Model N·m lb·ft N·m/rad lb·ft/rad kg·m² lb·ft·s² 301 * 0.07 2.50 × 10 1.84 ×...
  • Page 12: Introduction

    Chapter 1 – Introduction Magtrol TM Series In-Line Torque Transducers Specifications TM 301 – TM 308 operating principles The measuring system, based on the principle of a variable, overlap. Thus a torque-proportional voltage is on the secondary torque-proportional transformer coupling, consists of two coil. The conditioning electronic circuit incorporated in the concentric cylinders shrunk on the shaft on each side of the transducer converts the voltage to a nominal torque signal shaft’s deformation zone, and two concentric coils attached of 0 to ±5 VDC. A low-pass filter (Butterworth/2nd order), to the housing.
  • Page 13 • Auxiliary analog input selecting the coupling and assembling (alignment and balancing) the drive train configuration. Your Magtrol sales representative Torque 1.0 Software can assist you in choosing the right coupling for your transducer. ® Magtrol’s Torque 1.0 Software is an easy-to-use Windows executable program, used to automatically collect torque, speed Torque Speed Box and mechanical power data. The data can be printed, displayed Magtrol’s TSB Torque Speed Box allows data acquisition graphically or quickly saved as a Microsoft ® Excel spreadsheet. from two torque transducers simultaneously and provides the Standard features of Torque 1.0 include: peak torque capture, torque’s analog signal output and speed’s TTL signal output. multi-axes graphing, measured parameter vs. time, adjustable sampling rates and polynomial curve fitting. Accessories Model # Torque Transducer Connector Cable (5/10/20...
  • Page 14: Tm 309 - Tm 313

    Chapter 1 – Introduction Magtrol TM Series In-Line Torque Transducers TM 309 – TM 313 Data Sheet 1.3.2 TM 309 – TM 313 TM 309 – TM 313 In-Line Torque Transducers Features • Integrated Torque and Speed Conditioning • Torque Rating: 20 N·m to 500 N·m (37 lb·ft to 369 lb·ft) • Accuracy: < 0.1% • Overload Capacity: 200% •...
  • Page 15 Magtrol TM Series In-Line Torque Transducers Chapter 1 – Introduction Specifications TM 309 – TM 313 moDel ratings The ratings in the following table apply to all Torque Transducer series (TM, TMHS and TMB). Nominal Rated Torque Torsional Stiffness Moment of Inertia Weight * Model N·m lb·ft N·m/rad lb·ft/rad kg·m² lb·ft·s² 2.4 × 10 1.770 × 10 1.49 ×...
  • Page 16 Chapter 1 – Introduction Magtrol TM Series In-Line Torque Transducers Dimensions TM 309 – TM 313 operating principles The measuring system, based on the principle of a variable, torque- Thus a torque-proportional voltage is on the secondary coil. The proportional transformer coupling, consists of two concentric conditioning electronic circuit incorporated in the transducer cylinders shrunk on the shaft on each side of the shaft’s deformation converts the voltage to a nominal torque signal of 0 to ±5 VDC. A zone, and two concentric coils attached to the housing. low-pass filter (Butterworth/2nd order), adjustable from 5 kHz to 1 Hz, allows tuning of the torque signal frequency limitation. Both cylinders have a circularly disposed coinciding row of slots and rotate with the shaft inside the coils. An alternating...
  • Page 17 Magtrol TM Series In-Line Torque Transducers Chapter 1 – Introduction Dimensions TM 309 – TM 313 transDucers with splineD shaFt QQ - Splines according to DIN 5481 January 1952 * Centering Seat * Centering Seat CAUTION! ROTATING PARTS IN OPERATION.
  • Page 18 Chapter 1 – Introduction Magtrol TM Series In-Line Torque Transducers Dimensions TM 309 – TM 313 tmB transDucers with Keywa y * Centering Seat CAUTION! ROTATING PARTS IN OPERATION. STOP SYSTEM BEFORE PERFORMING MAINTENANCE. 60° Permitted Axial Thrust NOTE: Original dimensions are in Metric units. Dimensions converted to English have been rounded up to 3 or 4 decimal places.
  • Page 19 The Model 6400 Display has the following additional features: the drive train configuration. Your Magtrol sales representative • Pass/fail torque-speed-power testing capabilities can assist you in choosing the right coupling for your transducer. • RS-232 and IEEE-488 interface • Auxiliary analog input Torque Speed Box Torque 1.0 Software Magtrol’s TSB Torque Speed Box allows data acquisition from two torque transducers simultaneously and provides the Magtrol’s Torque 1.0 Software is an easy-to-use Windows ® torque’s analog signal output and speed’s TTL signal output. executable program, used to automatically collect torque, speed and mechanical power data. The data can be printed, displayed ® graphically or quickly saved as a Microsoft Excel spreadsheet. Standard features of Torque 1.0 include: peak torque capture, multi-axes graphing, measured parameter vs. time, adjustable sampling rates and polynomial curve fitting.
  • Page 20: Tm 314 - Tm 317

    Chapter 1 – Introduction Magtrol TM Series In-Line Torque Transducers TM 314 – TM 317 Data Sheet 1.3.3 TM 314 – TM 317 TM 314 – TM 317 In-Line Torque Transducers Features • Integrated Torque and Speed Conditioning • Torque Rating: 1000 to 10,000 N·m (737 to 7375 lb·ft) • Accuracy: < 0.1% (depending on model) • Overload Capacity: 200% •...
  • Page 21 Magtrol TM Series In-Line Torque Transducers Chapter 1 – Introduction Specifications TM 314 – TM 317 moDel ratings The ratings in the following table apply to both Torque Transducer series (TM and TMHS). Nominal Rated Torque Torsional Stiffness Moment of inertia Weight Model N·m lb·ft N·m/rad lb·ft/rad kg·m² lb·ft·s² 314 / X21 20.3 1,000 3.28 ×...
  • Page 22 Chapter 1 – Introduction Magtrol TM Series In-Line Torque Transducers Dimensions TM 314 – TM 317 operating principles The measuring system, based on the principle of a variable, torque- Thus a torque-proportional voltage is on the secondary coil. The proportional transformer coupling, consists of two concentric conditioning electronic circuit incorporated in the transducer cylinders shrunk on the shaft on each side of the shaft’s deformation converts the voltage to a nominal torque signal of 0 to ±5 VDC. A zone, and two concentric coils attached to the housing. low-pass filter (Butterworth/2nd order), adjustable from 5 kHz to 1 Hz, allows tuning of the torque signal frequency limitation. Both cylinders have a circularly disposed coinciding row of slots and rotate with the shaft inside the coils. An alternating...
  • Page 23 Magtrol TM Series In-Line Torque Transducers Chapter 1 – Introduction Dimensions TM 314 – TM 317 tm anD tmHs transDucers witH splineD sHaFt QQ - Splines according to DIN 5481 January 1952 * Centering Seat * Centering Seat CAUTION! ROTATING PARTS IN OPERATION.
  • Page 24 The Model 6400 Display has the following additional features: selecting the coupling and assembling (alignment and balancing) • Pass/fail torque-speed-power testing capabilities the drive train configuration. Your Magtrol sales representative • RS-232 and IEEE-488 interface can assist you in choosing the right coupling for your transducer. • Auxiliary analog input Torque Speed Box Torque 1.0 Software Magtrol’s TSB Torque Speed Box allows data acquisition ® Magtrol’s Torque 1.0 Software is an easy-to-use Windows from two torque transducers simultaneously and provides the executable program, used to automatically collect torque, speed torque’s analog signal output and speed’s TTL signal output. and mechanical power data. The data can be printed, displayed graphically or quickly saved as a Microsoft ® Excel spreadsheet. Standard features of Torque 1.0 include: peak torque capture, multi-axes graphing, measured parameter vs. time, adjustable sampling rates and polynomial curve fitting.
  • Page 25: Installation / Configuration

    2. Installation / Configuration 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 26: Tm/Tmb In Vertical Installation

    Chapter 2 – Installation / Configuration Magtrol TM Series In-Line Torque Transducers CAUTION! ROTATING PARTS IN OPERATION. STOP SYSTEM BEFORE PERFORMING MAINTENANCE. Figure 2–2 Supported Installation 2.1.2.1 Advantages • Increased critical speed due to less shaft bending. 2.1.2.2 Disadvantages •...
  • Page 27: Radial Forces (Bending)

    Magtrol TM Series In-Line Torque Transducers Chapter 2 – Installation / Configuration 2.2.1 adIal orceS endIng Radial forces (F in Figure 2–3) generate a bending momentum in the measuring shaft resulting in displacement of its center of gravity. This disequilibrium will load the shaft periodically with a frequency proportional to the speed of rotation.
  • Page 28: Axial Forces (Thrust)

    Chapter 2 – Installation / Configuration Magtrol TM Series In-Line Torque Transducers 2.2.2 xIal orceS hruST In suspended installations, pure thrust forces (F in figure 2–3) have practically no effect on the measurement results, as they do not provoke any deformation of the shaft that could influence the measurement.
  • Page 29: Measuring Shaft Vibrations

    Magtrol TM Series In-Line Torque Transducers Chapter 2 – Installation / Configuration 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.
  • Page 30: Figure 2-5 Vibratory Acceleration

    36000 Speed n [rpm] Figure 2–5 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 •...
  • Page 31: Torque Signal Conditioning Electronic Circuit

    Magtrol TM Series In-Line Torque Transducers Chapter 2 – Installation / Configuration 2.3.2 orque Ignal ondITIonIng lecTronIc IrcuIT The TM Series Torque Transducer is fitted with a measuring signal conditioning electronic circuit. This conditioning chain is based on a carrier frequency system containing a synchronous demodulator and a second-order butterworth-type low-pass filter.
  • Page 32: Mounting Limits

    Static and dynamic measurements differ from one another by the evolution of torque over time. A constant torque produces static measurements, whereas varying torques can only be determined by dynamic measurement. Magtrol TM Series Torque Transducers are designed for the measurement of both static and dynamic torque, without the need for recalibration. 2.4.2...
  • Page 33: Figure 2-8 Frequency Response Graph

    Magtrol TM Series In-Line Torque Transducers Chapter 2 – Installation / Configuration Note: The natural torsional frequency of the drive train is lower due to the presence of the TM Torque Transducer. The system's own natural frequency must then be recalculated to determine the influence of the TM Transducer.
  • Page 34: Natural Measuring Shaft Torsional Frequency

    Chapter 2 – Installation / Configuration Magtrol TM Series In-Line Torque Transducers 2.4.3 aTural eaSurIng haFT orSIonal requency 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.
  • Page 35: Maximum Dynamic Amplitude

    Magtrol TM Series In-Line Torque Transducers Chapter 2 – Installation / Configuration 2.4.4 axIMuM ynaMIc MplITude The dynamic peak-to-peak amplitude must not exceed 200% of the nominal torque of the TM Transducer. This is even true with alternating loads. This amplitude must remain within a range of...
  • Page 36: Figure 2-10 Example Of Protective System

    Chapter 2 – Installation / Configuration Magtrol TM Series In-Line Torque Transducers Figure 2–10 Example of Protective System...
  • Page 37: Electronic Signal Processing

    Chapter 2 – Installation / Configuration 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.
  • Page 38: Model 6400 Torque Transducer Display

    Chapter 2 – Installation / Configuration Magtrol TM Series In-Line Torque Transducers 2.6.2 6400 T odel orque ranSducer ISplay This unit has the same characteristics as the Model 3410 Torque Display but with the addition of an analog auxiliary input and fully configurable PASS/FAIL testing capabilities (for conformity tests on the production line).
  • Page 39: Model Dsp6001 Programmable Dynamometer Controller

    Signal Processing technology to provide superior testing capabilities. The DSP6001 is compatible with all TM Series In-Line Torque Transducers and is also designed to work with any Magtrol hD, Wb or Pb Dynamometer. Therefore, any Magtrol dynamometer can be used in conjunction with any TM Transducer with both testing devices being controlled by the same unit.
  • Page 40: Electrical Connections

    Chapter 2 – Installation / Configuration Magtrol TM Series In-Line Torque Transducers eleCtriCal ConneCtions Note: The connecting cable assembly (ER 113-0X) consists of a cable with 4 shielded twisted pairs of wires to connect the torque transducer to its signal processing electronic unit. This assembly must be ordered separately.
  • Page 41: Connecting Cable

    Magtrol TM Series In-Line Torque Transducers Chapter 2 – Installation / Configuration 2.7.2 onnecTIng aBle The connecting cable to the selected signal processing unit is fitted with a 6-pin Souriau connector on the transducer side and a 14-pin Centronics connector on the side of the signal processing unit.
  • Page 42: Connection To Non-Magtrol Electronics

    Chapter 2 – Installation / Configuration Magtrol TM Series In-Line Torque Transducers 2.7.3 onnecTIon To agTrol lecTronIcS To connect the torque transducer to electronic devices not manufactured by Magtrol, refer to the following connection diagram. Shield (Supply 20 to 32 VDC) (+15V) Torque O/P...
  • Page 43: Figure 2-21 Er 107 Pin Configuration

    Magtrol TM Series In-Line Torque Transducers Chapter 2 – Installation / Configuration gray Tacho O/P : yellow : red : blue Torque O/P : white : green D : shield BITE : brown Shield : yellow/black Figure 2-21 ER 107 Pin Configuration...
  • Page 44: Operating Principles

    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. 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 45: Differential Transformer

    Magtrol TM Series In-Line Torque Transducers Chapter 3 – Operating Principles 3.1.1 IFFerenTIal ranSForMer The primary coil of the transformer consists of two equal windings mounted in series. It is excited by an alternative current having a frequency of 20 khz which is generated by the transducer's built-in electronics.
  • Page 46: Maintenance / Repair

    The theoretical lifetime of the bearings is 5000 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 47: Repair

    In case of a defect, please refer to both the Warranty and Service Information located at the back of this manual. Whether you are directed to ship your equipment back to Magtrol, Inc. in the United States or Magtrol SA in Switzerland, it is very important to include the following information with your return shipment: •...
  • Page 48: Service Information

    Testing, Measurement and Control of Torque-Speed-Power • Load-Force-Weight • Tension • Displacement Via Paolo Uccello 4 - 20148 Milano Tel +39 02 48 009 757 Fax +39 02 48 002 070 info@dspmindustria.it www.dspmindustria.it...

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