Magtrol TM 302, TMB Series, TM 303, TM 304, TM 305 User Manual

TM 300 Series

Via Paolo Uccello 4 - 20148 Milano Tel +39 02 48 009 757 Fax +39 02 48 002 070 info@dspmindustria.it www.dspmindustria.it

In-Line Torque Transducers

User’s Manual

Purchase Record

Please record all model numbers and serial numbers of your Magtrol equipment, along with the general purchase information. The model number and serial number can be found on either a silver identiﬁcation plate or white label afﬁxed to each unit. Refer to these numbers whenever you communicate with a Magtrol representative about this equipment.

Model Number: _____________________________

Serial Number: _____________________________

Purchase Date: _____________________________

Purchased From: _____________________________

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.

COPYRIGHT

TRADEMARKS

LabVIEW™ is a trademark of National Instruments Corporation. Microsoft® is a registered trademark of Microsoft Corporation. National Instruments™ is a trademark of National Instruments Corporation. Windows® is a registered trademark of Microsoft Corporation.

1st English Edition, rev. G– June 2011

Safety Precautions

Warning! in order to minimize risks, it is of utmost

importance to respect the current safety standards 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.

Note: Detailed information regarding safety guards can be found in Section

2.5 – Protective Systems.

4. Periodically check all connections and attachments.

5. Always wear protective glasses when working with rotating elements.

6. Never wear a necktie or baggy clothes when standing close to rotating elements.

7. Never stand too close or bend over the rotating drive chain.

i

Revisions to this Manual

The contents of this manual is subject to change without prior notice.

REVISION DATE

First English edition, revision G – June 2011

Date Edition Change Section(s)

20.06.11 1st Edition - rev. G Accuracy update for TMB 301 to 313

26.05.11 1st Edition - rev. F Overload limit updated

04.10.10 1st Edition - rev. E Added information regarding vertical installation of a TM/TMB 2.1.3

28.07.09 1st Edition - rev. D Added information regarding connection to an differential ampliﬁer 2.7.3

10.09.08 1st Edition - rev. C Updated: Figure 2–3 Parastic Forces 2.2

12.18.07 1st Edition - rev. B New transducer model: TM 309

01.10.07 1st Edition - rev. A Added information regarding connection to non-Magtrol electronics. 2.7.3

1.3.1, 1.3.2

1.3.1, 1.3.2, 1.3.3

1.3.2, 2.2.1, 2.2.2 and 2.4.3

ii

Table of Contents

SAFETY PRECAUTIONS .........................................................................................................................I

REVISIONS TO THIS MANUAL ...............................................................................................................II

REVISION DATE .................................................................................................................................................................II

TABLE OF REVISIONS ......................................................................................................................................................II

TABLE OF CONTENTS ..........................................................................................................................III

TABLE OF FIGURES ........................................................................................................................................................ IV

PREFACE ................................................................................................................................................ V

PURPOSE OF THIS MANUAL ......................................................................................................................................... V

WHO SHOULD USE THIS MANUAL .............................................................................................................................. V

MANUAL ORGANIZATION ............................................................................................................................................. V

1. INTRODUCTION .................................................................................................................................1

1.1 GENERAL INFORMATION ........................................................................................................................................ 1

1.2 DESCRIPTION ............................................................................................................................................................. 1

1.3 DATA SHEETS ............................................................................................................................................................. 2

1.3.1 TM 301 – TM 308 ........................................................................................................................................... 2

1.3.2 TM 309 – TM 313 ........................................................................................................................................... 6

1.3.3 TM 314 – TM 317 ......................................................................................................................................... 12

2. INSTALLATION / CONFIGURATION ................................................................................................17

2.1 MOUNTING POSSIBILITIES ................................................................................................................................... 17

2.1.1 Suspended Installation .................................................................................................................................. 17

2.1.2 Supported Installation ................................................................................................................................... 17

2.1.3 TM/TMB in Vertical Installation ................................................................................................................... 18

2.2 PARASITIC FORCES ................................................................................................................................................. 18

2.2.1 Radial Forces (Bending) ............................................................................................................................... 19

2.2.2 Axial Forces (Thrust) .................................................................................................................................... 20

2.3 MEASURING SHAFT VIBRATIONS .......................................................................................................................21

2.3.1 Permitted Vibrations on Measuring Shaft ..................................................................................................... 21

2.3.2 Torque Signal Conditioning Electronic Circuit ............................................................................................. 23

2.4 MOUNTING LIMITS ................................................................................................................................................. 24

2.4.1 Dynamic Torque ............................................................................................................................................ 24

2.4.2 Natural Frequency of Drive Train ................................................................................................................. 24

2.4.3 Natural Measuring Shaft Torsional Frequency ............................................................................................. 26

2.4.4 Maximum Dynamic Amplitude..................................................................................................................... 27

2.5 PROTECTIVE SYSTEMS .......................................................................................................................................... 27

2.6 ELECTRONIC SIGNAL PROCESSING .................................................................................................................... 29

2.6.1 Model 3410 Torque Display .......................................................................................................................... 29

2.6.2 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

iii

Table of Contents Magtrol TM Series In-Line Torque Transducers

3.1.1 Differential Transformer ............................................................................................................................... 37

3.2 SPEED CONDITIONING CHAIN ............................................................................................................................. 37

3.3 BUILT-IN SELF-TEST CIRCUIT .............................................................................................................................. 37

4. MAINTENANCE / REPAIR ................................................................................................................38

4.1 MAINTENANCE ........................................................................................................................................................ 38

4.2 REPAIR ....................................................................................................................................................................... 39

SERVICE INFORMATION ......................................................................................................................40

RETURNING MAGTROL EQUIPMENT FOR REPAIR AND/OR CALIBRATION ..................................................... 40

Returning Equipment to Magtrol, Inc. (United States) ............................................................................................... 40

Returning Equipment to Magtrol SA (Switzerland) .................................................................................................... 40

TABLE OF FIGURES

1. INTRODUCTION

Figure 1–1 TMB 313 In-Line Torque Transducer .......................................................................................................1

2. INSTALLATION / CONFIGURATION

Figure 2–1 Suspended Installation ...........................................................................................................................17

Figure 2–2 Supported Installation ............................................................................................................................18

Figure 2–3 Parasitic Forces ......................................................................................................................................18

Figure 2–4 Radial Displacement ..............................................................................................................................21

Figure 2–5 Vibratory Acceleration ............................................................................................................................22

Figure 2–6 SW1 – SW12 Micro-switches and Offset Adjustment Potentiometer ......................................................23

Figure 2–7 Simpliﬁed Drive Train Model .................................................................................................................24

Figure 2–8 Frequency Response Graph ....................................................................................................................25

Figure 2–9 Admissible Dynamic Load ......................................................................................................................27

Figure 2–10 Example of Protective System...............................................................................................................28

Figure 2–11 Model 3410 Torque Display .................................................................................................................29

Figure 2–12 PC-Based System Conﬁguration with Model 3410 Display .................................................................29

Figure 2–13 Model 6400 Torque Transducer Display ..............................................................................................30

Figure 2–14 PC-Based System Conﬁguration with Model 6400 Display .................................................................30

Figure 2–15 Model DSP6001 Programmable Dynamometer Controller .................................................................31

Figure 2–16 PC-Based System Conﬁguration with Model DSP6001 Controller .....................................................31

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

iv

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.

WHO SHOULD USE THIS MANUAL

This is written for operators installing a torque transducer as part of a test system that meausres the torque on transmission chains. The operator is assumed to have the necessary technical training in electronics and mechanical engineering enabling him to install the in-line torque transducer without risk.

MANUAL ORGANIZATION

This section gives an overview of the structure of the manual and the information contained therein. Some information has been deliberately repeated in different sections of the document to minimize cross-referencing and to facilitate understanding through reiteration.

Preface

The structure of the manual is as follows:

Chapter 1 : INTRODUCTION – Contains the technical data sheets for Magtrol’s TM In-Line

Torque Transducers, which describe the units and provide detailed technical characteristics.

Chapter 2 : INSTALLATION / CONFIGURATION – Provides information needed for the setup

of the TM Transducers in a test system, and their integration with Magtrol electronic control units.

Chapter 3 : OPERATING PRINCIPLES – Information pertaining to theory of operation

including details about the transducer's architecture, speed conditioning chain and built-in self-test circuit.

Chapter 4 : MAINTENANCE / REPAIR – Provides information on maintenance and repair

procedures, should the need arise.

v

Magtrol TM Series In-Line Torque TransducersPreface

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. It introduces information enabling the correct and optimal functioning of the product to be obtained.

Caution : this is used to draw the operator's attention to information,

direCtives, proCedures, etC. whiCh, if ignored, may result in damage being Caused to the material being used. the assoCiated text desCribes the neCessary preCautions to take and the ConsequenCes that may arise if the preCautions are ignored.

Warning! thi s in t roduces dire c t i ves, proced u r e s,

precautionary measures, etc. Which must Be eXecuted or folloWed With the utmost care and attention, otherWise the personal safety of the operator or third parties may Be put at risk. the reader must aBsolutely take note of the accompanying teXt, and act upon it, Before proceeding further.

vi

1. Introduction

1.1 GENERAL INFORMATION

The TM Series In-Line Torque Transducers represent the new generation of high-precision torque sensors with integrated electronic processing circuitry developed by Magtrol. The TM Series transducers are available in three versions: TMB, TM and TMHS. TMB for all standard applications, 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.

The TM Series In-Line Transducers, together with Magtrol's New TF Series Torque Flange Transducers, offer a wide range of torque measurement requirements for the most demanding applications.

1.2 DESCRIPTION

All TM Series In-Line Torque Transducers consist of a torque measuring shaft and built-in signal processing electronics. These elements, along with two sealed bearings having lifelong lubrication, are all contained in an aluminium housing which also supports the shaft.

The upper part of the unit contains the built-in electronics. This part is sealed according to the IP44 standard 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 3410 Torque Display—via a special cable assembly.

Figure 1–1 TMB 313 In-Line Torque Transducer

TM Torque Transducers perform the following main functions:

1. Measurement of static and dynamic torque and detection of torque direction.

2. Measurement of the shaft's rotational speed and detection of rotational direction.

3. Self-check.

The transducer's integrated electronic circuitry ﬁlters the torque signal and its built-in self-test function checks the operation of the measuring chain. Each transducer also has a built-in temperature compensation circuit. This assures that the accuracy of the measured torque is maintained regardless of operating temperature.

1

1.3 DATA SHEETS

TM 301 – TM 308

Data Sheet

1.3.1 TM 301 – TM 308

Magtrol TM Series In-Line Torque TransducersChapter 1 – Introduction

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%

• Overload Capacity: 200%

• Overload Limit: 400%

• High Speed Applications: up to 50,000 rpm

• Non-Contact (no sliprings)

• No Electronic Components in Rotation

• High Electrical Noise Immunity

• Single DC Power Supply: 20 VDC to 32 VDC

• Immediate Speed Detection

• Adjustable Torque Signal Frequency Limitation

• Built-in Test Function

• Stainless Steel Shaft

• EMC Susceptibility Conforms to European Standards

DESCRIPTION

Magtrol’s In-Line Torque Transducers provide extremely accurate torque and speed measurement over a very broad range. Each model has an integrated conditioning electronic module providing a 0 to ±10 VDC torque output and an open collector speed output. Magtrol Torque Transducers are very reliable, providing high overload protection, excellent long term stability and high noise immunity.

All transducer models employ our unique non-contact differential transformer torque measuring technology. This measuring technology offers many benefits, most notably that no electronic components rotate during operation.

To provide customers with several price/performance options, Magtrol offers three torque transducer models: basic accuracy (TMB series), high accuracy (TM series) and high speed with high accuracy (TMHS).

Each transducer consists of a hardened stainless steel shaft with smooth shaft ends, an anodized aluminium housing containing the guide bearings and

an electronic measurement conditioner.

Model TM 307 Torque Transducer

The integrated electronic circuit, supplied by single DC voltage, provides torque and speed signals without any additional amplifier. Connections are made by means of a 6-pole male connector mounted on the housing, and fixed mounting is enabled by mounting holes located on the transducer.

APPLICATIONS

TM, TMB and TMHS Series Torque Transducers provide dynamic torque and speed measurement of:

• Propellers - aerospace, marine and helicopter

• Windshield wipers, electrical windows, starters, generators and brakes in automobile industry

• Pumps - water and oil

• Reduction gears and gearboxes

• Clutches

• Motorized valves

• Drills, pneumatic tools and other machine tools

BASIC SYSTEM CONFIGURATION

TORQUE

TRANSDUCER

TM 301 – TM 308

Power Supply 20 to 32 VDC / 100 mA max.

Test

Torque 0 to ±10 VDC (max.)

Speed

2

Magtrol TM Series In-Line Torque Transducers

in series), max. 30 VDC, protected against short-circuits

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).

Model

301 * 0.1 0.07 29 21 2.50 × 10 302 * 0.2 0.15 29 21 2.50 × 10 303 0.5 0.37 66 48 2.55 × 10 304 1 0.7 145 107 2.82 × 10 305 2 1.5 290 214 2.91 × 10 306 5 3.7 725 535 3.08 × 10 307 10 7.4 1450 1069 2.63 × 10 308 20 15 2900 2139 2.66 × 10

* Models 301 and 302 available in TM Series only.

Nominal Rated Torque Torsional Stiffness Moment of Inertia Weight

N·m lb·ft N·m/rad lb·ft/rad kg·m² lb·ft·s² kg lb

-5

1.84 × 10

1.88 × 10

2.07 × 10

2.14 × 10

2.27 × 10

1.94 × 10

1.96 × 10

-5

1.1 2.43

1.2 2.65

series ratings

The ratings in the following table apply to all standard Torque Transducer models 301–308, unless otherwise noted.

Stand ard Ve rsi on TM Se ries TMHS Ser ies TMB S eries

TORQUE MEASUREMENT

Rated Torque (RT) 0 to ±100% of RT Maximum Dynamic Torque Peak Value

(Overload Capacity) Maximum Dynamic Torque Without Damage

(Overload Limit) Combined Error of Linearity and

Hysteresis to 100% of RT

Combined Error of Linearity and Hysteresis from 100% to 200% of RT

< ±0.1% of RT

(0.2% for TM 301)

< ±0.1% of

measured value

(0.2% for TM 301)

Temperature Influence on the Zero/ Sensitivity:

• In the Compensated Range +10 °C to +60 °C < ±0.1% of RT/10K < ±0.2% of RT/10K

• In the Compensated Range -25 °C to +80 °C < ±0.2% of RT/10K < ±0.4% of RT/10K Influence of Speed on the Zero Torque

Signal

< ±0.01% of RT/1000 rpm < ±0.02% of RT/1000 rpm

Long-term Stability of Sensitivity < ±0.05% of RT/year < ±0.1% of RT/year

SPEED MEASUREMENT

Rated Range of Use 1 to 20,000 rpm

TMHS 303: 1 to 40,000 rpm

TMHS 304-308: 1 to 50,000 rpm Number of Teeth 60 Z Minimum Speed Detection 1 rpm

ENVIRONMENT

Storage Temperature Range -40 °C to +100 °C Operating Temperature Range -40 °C to +85 °C Mechanical Shock according to IEC 68.2.27 / Class D3 Vibration according to IEC 68.2.6 / Class D3 Protection Class IP 44

MECHANICAL CHARACTERISTICS

Shaft Ends smooth

Balancing Quality G1 according to ISO 1940

INPUT AND OUTPUT SIGNALS

Power Supply (max. voltage / current) 20 to 32 VDC / 100 mA Torque Output (rated / max.) ±5 / ±10 VDC Filter Cutoff (frequency) 5000, 2500, 1000, 500, 200, 100, 40, 20, 10, 5, 2, 1 Hz Speed Output (frequency)

open collector (15 Ω

CONNECTORS

Counter Connector (female) optional (P/N 957.11.08.0081)

0 to ±200% of RT

0 to ±400% of RT

< ±0.1% of RT < ±0.1% of RT

< ±0.1% of

measured value

< ±0.15% of

measured value

1 to 6,000 rpm

G2.5 according to

ISO 1940

3

Magtrol TM Series In-Line Torque TransducersChapter 1 – Introduction

Specifications

operating principles

The measuring system, based on the principle of a variable, torque-proportional transformer coupling, consists of two concentric cylinders shrunk on the shaft on each side of the shaft’s deformation zone, and two concentric coils attached to the housing.

Both cylinders have a circularly disposed coinciding row of slots and rotate with the shaft inside the coils. An alternating current with the frequency of 20 kHz flows through the primary coil. When no torque is applied, the slots on the two cylinders fail to overlap. When torque is applied, the deformation zone undergoes an angular deformation and the slots begin to

Dimensions

M CC

60°

D

C

TM 301–303 Shaft Detail

F

J

H

G

F

L P

K

N

A

BCF

E

D

TM 301 – TM 308

overlap. Thus a torque-proportional voltage is on the secondary coil. The conditioning electronic circuit incorporated in the transducer converts the voltage to a nominal torque signal of 0 to ±5 VDC. A low-pass filter (Butterworth/2nd order), adjustable from 5 kHz to 1 Hz, allows tuning of the torque signal frequency limitation.

An optical sensor reads the speed on a toothed path machined directly on the measuring system. The electronic conditioner outputs a frequency signal proportional to the shaft rotational speed. An active circuit compensates the zero and sensitivity temperature drifts within a tolerance of 0.1% / 10 K.

N

R

Q

S

CAUTION!

C

E

B

A

D

60°

ROTATING PARTS

IN OPERATION.

STOP SYSTEM BEFORE

PERFORMING

MAINTENANCE.

U

V

W

Y GG

Permitted

X FF

Axial Thrust

AA

T

EE

NOTE:

Dimensions are the same for every series (TM, TMHS, TMB). Original dimensions are in Metric units. Dimensions converted to English have been rounded up to 3 or 4 decimal places.

Model units Ø A Ø B Ø C Ø D E F G H J K L M N P Q

60 42g6 2.12 0.1 --- 1.9 --- --- 13.2 7.8 5 114 60 5 9

2.362

1.6533

1.6526

0.083 0.004 --- 0.075 --- --- 0.520 0.307 0.197 4.488 2.362 0.197 0.354

60 42g6 6.7 4.3 M4 3.2 10 14 21.2 10.8 5 136 60 5 12

2.362

1.6533

1.6526

0.264 0.169 M4 0.126 0.394 0.551 0.835 0.425 0.197 5.354 2.362 0.197 0.472

301–303

304–308

mm

in

mm

in

Model units R S Ø T U V W X Y AA CC DD EE FF GG

0

(

-0.05

1.3779

1.3760

0

(

-0.05

1.3779

1.3760

)

30 7.5 45

1.181 0.295 1.772

)

30 ±0.02 7.5 45

1.1819

1.1803

0.295 1.772

301–303

304–308

mm

in

mm

in

14 12 6h6 15 10 M5 7.5 45 100 87 35

0.551 0.472

0.2362

0.2359

0.591 0.394 M5 0.295 1.772 3.937 3.425

22 20 10h6 15 10 M5 7.5 45 100 87 35

0.866 0.787

0.3937

0.3933

0.591 0.394 M5 0.295 1.772 3.937 3.425

DD

4

Magtrol TM Series In-Line Torque Transducers

Chapter 1 – Introduction

Specifications

system options anD accessories

TM SERIES

Unit Under Test

Mandatory for high speed applications.

Unit Under Test

For low speed applications only, uses single-element

couplings to create a shorter drive train.

TORQUE TRANSDUCER

A

B C F

E

D

CAUTION!

ROTATING PARTS

IN OPERATION.

STOP SYSTEM BEFORE

PERFORMING MAINTENANCE.

Coupling Coupling

Supported Installation

TM SERIES

TORQUE TRANSDUCER

MAINTENANCE. PERFORMING

STOP SYSTEM BEFORE IN OPERATION. ROTATING PARTS

CAUTION!

D

Coupling Coupling

E

BCF

A

Suspended Installation

TM 301 – TM 308

PC

Torque 1.0

Software

RS-232C

MAGTROL

Model 3410

Torque Display

PC-Based System Configuration

Torque Transducer with Model 3410 Display

and Torque 1.0 Software

Torque Transducer

SYSTEM

SELECT

TARE

TRANSDUCER

TM Series

SPEED TORQUE

Couplings

When Magtrol TMB, TM and TMHS Series Torque Transducers are to be mounted in a drive train, double-element miniature couplings are the ideal complement, although single-element couplings can be used for low speed applications. Several manufacturers provide adequate couplings for both supported and suspended drive train installations. The criteria for selecting appropriate couplings for torque measurement is as follows:

• High torsional spring rate: Ensures a high torsional stiffness and angular precision (should be greater than three times the torque transducer stiffness)

• Clamping quality (should be self-centering and of adequate strength)

• Speed range

• Balancing quality (according to speed range)

• Alignment capability

The higher the speed of the application, the more care is required in selecting the coupling and assembling (alignment and balancing) the drive train configuration. Your Magtrol sales representative can assist you in choosing the right coupling for your transducer.

Torque Speed Box

Magtrol’s TSB Torque Speed Box allows data acquisition from two torque transducers simultaneously and provides the torque’s analog signal output and speed’s TTL signal output.

Torque Transducer Displays

Magtrol offers two different Torque Displays (Models 3410 and

6400) which supply power to any TM/TMHS/TMB Transducer and display torque, speed and mechanical power. Features include:

• Adjustable English, metric and SI torque units

• Large, easy-to-read vacuum fluorescent display

• Built-in self-diagnostic tests

• Overload indication

• Tare function

• RS-232 interface

• Torque and speed outputs

• Closed-box calibration

• Includes Magtrol Torque 1.0 Software

The Model 6400 Display has the following additional features:

• Pass/fail torque-speed-power testing capabilities

• RS-232 and IEEE-488 interface

• Auxiliary analog input

Torque 1.0 Software

Magtrol’s Torque 1.0 Software is an easy-to-use Windows

®

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.

Accessories Model # Torque Transducer Connector Cable (5/10/20

m)

ER 113

5

1.3.2 TM 309 – TM 313

TM 309 – TM 313

Data Sheet

Magtrol TM Series In-Line Torque TransducersChapter 1 – Introduction

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%

• Overload Limit: 400%

• High Speed Applications: up to 32,000 rpm

• Non-Contact (no sliprings)

• No Electronic Components in Rotation

• High Electrical Noise Immunity

• Single DC Power Supply: 20 VDC to 32 VDC

• Immediate Speed Detection

• Adjustable Torque Signal Frequency Limitation

• Built-in Test Function

• Stainless Steel Shaft

• EMC Susceptibility Conforms to European Standards

DESCRIPTION

Magtrol’s In-Line Torque Transducers provide extremely accurate torque and speed measurement over a very broad range. Each model has an integrated conditioning electronic module providing a 0 to ±10 VDC torque output and an open collector speed output. Magtrol Torque Transducers are very reliable, providing high overload protection, excellent long term stability and high noise immunity.

All transducer models employ our unique non-contact differential transformer torque measuring technology. This measuring technology offers many benefits, most notably that no electronic components rotate during operation.

To provide customers with several price/performance options, Magtrol offers three torque transducer models: basic accuracy (TMB series), high accuracy (TM series) and high speed with high accuracy (TMHS).

Each transducer consists of a hardened stainless steel shaft with smooth or splined shaft ends, an anodized aluminium housing containing the guide bearings conditioner. The integrated electronic circuit, supplied by single

and an electronic measurement

Model TM 313 Torque Transducer

DC voltage, provides torque and speed signals without any additional amplifier. The transducer is a stand-alone measuring chain. Connections are made by means of a 6-pole male connector mounted on the housing. A removable aluminium base—delivered as standard with TM and TMHS models, and as an option for TMB transducers—allows fixed mounting of the transducer.

APPLICATIONS

TM, TMB and TMHS Series Torque Transducers provide dynamic torque and speed measurement of:

• Propellers - aerospace, marine and helicopter

• Windshield wipers, electrical windows, starters,

generators and brakes in automobile industry

• Pumps - water and oil

• Reduction gears and gearboxes

• Clutches

• Motorized valves

• Drills, pneumatic tools and other machine tools

BASIC SYSTEM CONFIGURATION

TORQUE

TRANSDUCER

TM 309 – TM 313

Power Supply 20 to 32 VDC / 100 mA max.

Test

Torque 0 to ±10 VDC (max.)

Speed

6

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).

Model

309 20 15 2.4 × 10 310 50 37 5.7 × 10 311 100 74 1.14 × 10 312 200 148 3.82 × 10 313 500 369 9.58 × 10

* The weight for TMB series transducers ordered without an optional foot mount is slightly lower.

Nominal Rated Torque Torsional Stiffness Moment of Inertia Weight *

N·m lb·ft N·m/rad lb·ft/rad kg·m² lb·ft·s² kg lb

3

1.770 × 1031.49 × 10-41.03 × 10

3

4.204 × 1031.52 × 10-41.12 × 10

4

8.408 × 1031.55 × 10-41.14 × 10

4

2.82 × 1044.85 × 10-43.57 × 10

4

7.07 × 1045.16 × 10-43.80 × 10

-4

2.5 5.51

4.1 9.04

4.4 9.70

series ratings

The ratings in the following table apply to all standard Torque Transducer models 309–313, except where specifically noted.

Stand ard Versi on TM S eri es TMHS Ser ies TMB S eri es

TORQUE MEASUREMENT

Rated Torque (RT) 0 to ±100% of RT Maximum Dynamic Torque Peak Value

(Overload Capacity) Maximum Dynamic Torque Without Damage

(Overload Limit) Combined Error of Linearity and Hysteresis

to 100% of RT Combined Error of Linearity and Hysteresis

from 100 to 200% of RT Temperature Influence on the Zero/

Sensitivity:

• In the Compensated Range +10 °C to +60 °C < ±0.1% of RT/10K < ±0.2% of RT/10K

• In the Compensated Range -25 °C to +80 °C < ±0.2% of RT/10K < ±0.4% of RT/10K Influence of Speed on the Zero Torque

Signal Long-term Stability of Sensitivity < ±0.05% of RT/year < ±0.1% of RT/year

SPEED MEASUREMENT

Rated Range of Use

Number of Teeth 60 Z Minimum Speed Detection 1 rpm

ENVIRONMENT

Storage Temperature Range -40 °C to +100 °C Operating Temperature Range -40 °C to +85 °C Mechanical Shock according to IEC 68.2.27 / Class D3 Vibration according to IEC 68.2.6 / Class D3 Protection Class IP 44

MECHANICAL CHARACTERISTICS

Shaft Ends

Balancing Quality G1 according to ISO 1940

Foot Support (Base Mount) included included optional

INPUT AND OUTPUT SIGNALS

Power Supply (max. voltage / current) 20 to 32 VDC / 100 mA Torque Output (rated / max.) ±5 / ±10 VDC Filter Cutoff (frequency) 5000, 2500, 1000, 500, 200, 100, 40, 20, 10, 5, 2, 1 Hz

Speed Output (frequency)

CONNECTORS

Counter Connector (female) optional (P/N 957.11.08.0081)

models 309–311 1 to 10,000 rpm 1 to 32,000 rpm 1 to 4,000 rpm models 312–313 1 to 10,000 rpm 1 to 24,000 rpm 1 to 4,000 rpm

model 309 smooth models 310–311 smooth smooth keyway models 312–313 smooth or splined smooth or splined keyway

< ±0.1% of RT < ±0.1% of RT < ±0.1% of RT

< ±0.1% of

measured value

< ±0.01% of RT/1000 rpm < ±0.02% of RT/1000 rpm

open collector (15 Ω in series), max. 30 VDC, protected against short-

0 to ±200% of RT

0 to ±400% of RT

< ±0.1% of

measured value

circuits

< ±0.15% of

measured value

G2.5 according to ISO

1940

7

Magtrol TM Series In-Line Torque TransducersChapter 1 – Introduction

M CC

Dimensions

TM 309 – TM 313

operating principles

The measuring system, based on the principle of a variable, torqueproportional transformer coupling, consists of two concentric cylinders shrunk on the shaft on each side of the shaft’s deformation zone, and two concentric coils attached to the housing.

Both cylinders have a circularly disposed coinciding row of slots and rotate with the shaft inside the coils. An alternating current with the frequency of 20 kHz flows through the primary coil. When no torque is applied, the slots on the two cylinders fail to overlap. When torque is applied, the deformation zone undergoes an angular deformation and the slots begin to overlap.

Thus a torque-proportional voltage is on the secondary coil. The conditioning electronic circuit incorporated in the transducer converts the voltage to a nominal torque signal of 0 to ±5 VDC. A low-pass filter (Butterworth/2nd order), adjustable from 5 kHz to 1 Hz, allows tuning of the torque signal frequency limitation.

An optical sensor reads the speed on a toothed path machined directly on the measuring system. The electronic conditioner outputs a frequency signal proportional to the shaft rotational speed. An active circuit compensates the zero and sensitivity temperature drifts within a tolerance of 0.1% / 10 K.

transDucers with smooth shaFt

N

AA

DD

KK

LL

GG HH

FF

EE

H

* Centering Seat

B

60°

A*

C

G

F

D

E

NOTE:

Original dimensions are in Metric units. Dimensions converted to English have been rounded up to 3 or 4 decimal places.

J

K

L

N

A

BCF

E

D

CAUTION!

ROTATING PARTS

IN OPERATION.

STOP SYSTEM BEFORE

PERFORMING

MAINTENANCE.

W

Y

Z

X

R

S

Q

T

Permitted

P

Axial Thrust

U

V

JJ

Model units Ø A Ø B Ø C Ø D E F G H J K L M N P Q R S Ø T

82g6 64 9.6 6.4 M6 5.0 16 21 26.2 16.8 86 170.4 60 20 15 26.4 25 20h6

309/X11

310/X11

311/X11

312/X11

313/X11

mm

in

mm

in

mm

in

mm

in

mm

in

3.2283

3.2270

3.2283

3.2270

3.2283

3.2270

3.7791

3.7782

3.7791

3.7782

2.52 0.378 0.252 M6 0.197 0.63 0.827 1.031 0.661 3.386 6.709 2.362 0.787 0.591 1.039 0.984

82g6 64 9.6 6.4 M6 5.0 16 21 36.2 16.8 86 190.4 60 20 15 36.4 35 20h6

2.52 0.378 0.252 M6 0.197 0.63 0.827 1.425 0.661 3.386 7.496 2.362 0.787 0.591 1.433 1.378

82g6 64 9.6 6.4 M6 5.0 16 21 41.2 16.8 86 200.4 60 20 15 41.4 40 20h6

2.52 0.378 0.252 M6 0.197 0.63 0.827 1.622 0.661 3.386 7.89 2.362 0.787 0.591 1.63 1.575

96g6 78 14.9 10.5 M10 7.5 22 30 46.4 22.8 91 228.0 60 25 21 46.8 45 30h6

3.071 0.587 0.413 M10 0.295 0.866 1.181 1.827 0.898 3.583 8.976 2.362 0.984 0.827 1.842 1.772

96g6 78 14.9 10.5 M10 7.5 22 30 56.4 22.8 91 248.0 60 25 21 56.8 55 30h6

3.071 0.587 0.413 M10 0.295 0.866 1.181 2.22 0.898 3.583 9.764 2.362 0.984 0.827 2.236 2.165

0.7874

0.7869

0.7874

0.7869

0.7874

0.7869

1.1811

1.1806

1.1811

1.1806

Model units U V W X Y Z AA CC DD EE FF GG HH Ø JJ KK LL

29.4 12 76 10 110 130 74 87

309/X11

310/X11

311/X11

312/X11

313/X11

mm

1.157 0.472 2.992 0.394 4.331 5.118 2.913 3.425

in

39.4 12 76 10 110 130 74 87

mm

in

mm

in

mm

in

mm

in

1.551 0.472 2.992 0.394 4.331 5.118 2.913 3.425

44.4 12 76 10 110 130 74 87

1.748 0.472 2.992 0.394 4.331 5.118 2.913 3.425

53.8 18 83 10 119 139 80 87

2.118 0.709 3.268 0.394 4.685 5.472 3.15 3.425

63.8 18 83 10 119 139 80 87

2.512 0.709 3.268 0.394 4.685 5.472 3.15 3.425

60

2.3622

2.3603

60

2.3622

2.3603

60

2.3622

2.3603

75

2.9527

2.9508

75

2.9527

2.9508

8

0

45±0.025 8 74 90±0.05 6.6 M5×10 20

(

)

-0.05

1.7726

0.315 2.913

1.7707

0

45±0.025 8 74 90±0.05 7 M5×10 20

(

)

-0.05

1.7726

0.315 2.913

1.7707

0

45±0.025 8 74 90±0.05 7 M5×10 20

(

)

-0.05

1.7726

0.315 2.913

1.7707

0

50±0.025 10 80 100±0.05 9 M6×8 26

(

)

-0.05

1.9695

0.394 3.15

1.9675

0

50±0.025 10 80 100±0.05 9 M6×8 26

(

)

-0.05

1.9695

0.394 3.15

1.9675

3.5453

0.260 M5×0.394 0.787

3.5413

3.5453

0.276 M5×0.394 0.787

3.5413

3.5453

0.276 M5×0.394 0.787

3.5413

3.9390

0.354 M6×0.315 1.024

3.9350

3.9390

0.354 M6×0.315 1.024

3.9350

Magtrol TM Series In-Line Torque Transducers

AA

DD

Chapter 1 – Introduction

Dimensions

TM 309 – TM 313

transDucers with splineD shaFt

M CC

KK

N

LL

GG HH

EE

H

G

* Centering Seat

B

60°

A*

F

C

D

E

NOTE:

Original dimensions are in Metric units. Dimensions converted to English have been rounded up to 3 or 4 decimal places.

J

K

L

N

A

B C F

E

D

CAUTION!

ROTATING PARTS

IN OPERATION.

STOP SYSTEM BEFORE

PERFORMING

MAINTENANCE.

W

Y

Z

Q

P

X

R

S

MM

NN

PP

Permitted

Axial Thrust

U

V

QQ - Splines according to DIN 5481 January 1952

* Centering

Seat

RR*

T*

QQ

JJ

Model units Ø A Ø B Ø C Ø D E F G H J K L M N

96g6 78 14.9 10.5 M10 7.5 22 30 40.4 22.8 91 216 60

312/X21

313/X21

mm

in

mm

in

3.7791

3.7782

3.7791

3.7782

3.071 0.587 0.413 M10 0.295 0.866 1.181 1.591 0.898 3.583 8.504 2.362

96g6 78 14.9 10.5 M10 7.5 22 30 52.4 22.8 91 240 60

3.071 0.587 0.413 M10 0.295 0.866 1.181 2.063 0.898 3.583 9.449 2.362

FF

Model units P Q R S Ø T U V W X Y Z AA CC

312/X21

313/X21

mm

in

mm

in

25 21 40.8 39 22h6 47.8 18 83 10 119 139 80 87

0.984 0.827 1.606 1.535

0.8661

0.8656

1.882 0.709 3.268 0.394 4.685 5.472 3.15 3.425

25 21 52.8 51 22h6 59.8 18 83 10 119 139 80 87

0.984 0.827 2.079 2.008

0.8661

0.8656

2.354 0.709 3.268 0.394 4.685 5.472 3.15 3.425

Model units DD EE FF GG HH Ø JJ KK LL MM NN PP QQ Ø RR

0

312/X21

313/X21

mm

in

mm

in

75

50±0.025 10 80 100±0.05 9 M6×8 26 35 24 4 26×30 31h6

(

)

-0.05

2.9527

2.9508

0

(

-0.05

2.9527

2.9508

1.9695

1.9675

50±0.025 10 80 100±0.05 9 M6×8 26 47 36 4 26×30 31h6

)

1.9695

1.9675

0.394 3.15

3.9390

3.9350

3.9390

3.9350

0.354 M6×0.315 1.024 1.378 0.945 0.157 26×30

0.354 M6×0.315 1.024 1.850 1.417 0.157 26×30

options

Flanges

Flanges are optional for torque transducers with splined shaft ends. Flange drawing is available on request.

Description Model P/N Flange for Model 312/X21 FTM 212 415-212-960-011 Flange for Model 313/X21 FTM 213 415-213-960-011

1.2205

1.2198

1.2205

1.2198

9

Magtrol TM Series In-Line Torque TransducersChapter 1 – Introduction

AA

Di mensions

TM 309 – TM 313

tmB transDucers with Keyway

M CC

N

UU

SS

KK

LL

* Centering Seat

A*

NOTE:

J

H

G

F

C

D

B

60°

E

K

L

N

A

BCF

E

D

CAUTION!

ROTATING PARTS

IN OPERATION.

STOP SYSTEM BEFORE

PERFORMING

MAINTENANCE.

W

Q

P

R

S

BB

Permitted

Axial Thrust

T

Original dimensions are in Metric units. Dimensions converted to English have been rounded up to 3 or 4 decimal places.

Model units Ø A Ø B Ø C Ø D E F G H J K L M P

82g6 64 9.6 6.4 M6 5.0 16 21 36.2 16.8 86 190.4 20

310/431

311/431

312/431

313/431

mm

3.2283

in

3.2270 82g6 64 9.6 6.4 M6 5.0 16 21 41.2 16.8 86 200.4 20

mm

3.2283

in

3.2270 96g6 78 14.9 10.5 M10 7.5 22 30 46.4 22.8 91 228.0 25

mm

3.7791

in

3.7782 96g6 78 14.9 10.5 M10 7.5 22 30 56.4 22.8 91 248.0 25

mm

3.7791

in

3.7782

2.52 0.378 0.252 M6 0.197 0.63 0.827 1.425 0.661 3.386 7.496 0.787

2.52 0.378 0.252 M6 0.197 0.63 0.827 1.622 0.661 3.386 7.89 0.787

3.071 0.587 0.413 M10 0.295 0.866 1.181 1.827 0.898 3.583 8.976 0.984

3.071 0.587 0.413 M10 0.295 0.866 1.181 2.22 0.898 3.583 9.764 0.984

Model units N Q R S Ø T W AA BB CC KK LL SS UU

310/431

311/431

312/431

313/431

mm

60 15 36.4 35 20h6 76 74 32 87 M5×10 20 25 6h9

2.362 0.591 1.433 1.378

in

0.7874

0.7869

2.992 2.913 1.26 3.425 M5×0.394 0.787 0.984

60 15 41.4 40 20h6 76 74 37 87 M5×10 20 25 6h9

2.362 0.591 1.63 1.575

in

0.7874

0.7869

2.992 2.913 1.457 3.425 M5×0.394 0.787 0.984

60 21 46.8 45 30h6 83 80 42 87 M6×8 26 36 8h9

2.362 0.827 1.842 1.772

in

1.1811

1.1806

3.268 3.15 1.653 3.425 M6×0.315 1.024 1.417

60 21 56.8 55 30h6 83 80 52 87 M6×8 26 36 8h9

2.362 0.827 2.236 2.165

in

1.1811

1.1806

3.268 3.15 2.047 3.425 M6×0.315 1.024 1.417

options

Foot Mount

For foot mount dimensions, ref er to U–Z and DD– JJ dimensions of the smooth shaft transducer.

5

Description Model P/N Foot mount for models 310–311 PTM 310 415-309-950-011 Foot mount for models 312–313 PTM 312 415-312-950-011

10

0.2362

0.2350

0.2362

0.2350

0.3150

0.3135

0.3150

0.3135

Magtrol TM Series In-Line Torque Transducers

TM SERIES

Chapter 1 – Introduction

System Options

system options anD accessories

Unit Under Test

Mandatory for high speed applications.

Unit Under Test

For low speed applications only, uses single-element

couplings to create a shorter drive train.

Couplings

When Magtrol TMB, TM and TMHS Series Torque Transducers

are to be mounted in a drive train, double-element miniature couplings are the ideal complement, although single-element couplings can be used for low speed applications. Several manufacturers provide adequate couplings for both supported and suspended drive train installations. The criteria for selecting appropriate couplings for torque measurement is as follows:

• High torsional spring rate: Ensures high torsional

stiffness & angular precision (should be > 3 times the torque transducer stiffness)

• Clamping quality (should be self-centering & of

adequate strength)

• Speed range

• Balancing quality (according to speed range)

• Alignment capability The higher the speed of the application, the more care is required in

selecting the coupling and assembling (alignment and balancing) the drive train configuration. Your Magtrol sales representative can assist you in choosing the right coupling for your transducer.

Torque Speed Box

Magtrol’s TSB Torque Speed Box allows data acquisition from two torque transducers simultaneously and provides the torque’s analog signal output and speed’s TTL signal output.

TORQUE TRANSDUCER

A B C F

E

D

CAUTION!

ROTATING PARTS

IN OPERATION.

STOP SYSTEM BEFORE

PERFORMING MAINTENANCE.

Coupling Coupling

Supported Installation

TM SERIES

TORQUE TRANSDUCER

MAINTENANCE. PERFORMING

STOP SYSTEM BEFORE IN OPERATION. ROTATING PARTS

CAUTION!

D

Coupling Coupling

E

BCF A

Suspended Installation

TM 309 – TM 313

PC

Torque 1.0

Software

TM Series

Torque Transducer

SPEED TORQUE

RS-232C

SYSTEM

SELECT

TARE

MAGTROL

Model 3410

Torque Display

PC-Based System Configuration

Torque Transducer with Model 3410 Display

and Torque 1.0 Software

Torque Transducer Displays

Magtrol offers two different Torque Displays (Models 3410 and

6400) which supply power to any TM/TMHS/TMB Transducer and display torque, speed and mechanical power. Features include:

• Adjustable English, metric and SI torque units

• Large, easy-to-read vacuum fluorescent display

• Built-in self-diagnostic tests

• Overload indication

• Tare function

• RS-232 interface

• Torque and speed outputs

• Closed-box calibration

• Includes Magtrol Torque 1.0 Software

The Model 6400 Display has the following additional features:

• Pass/fail torque-speed-power testing capabilities

• RS-232 and IEEE-488 interface

• Auxiliary analog input

Torque 1.0 Software

Magtrol’s Torque 1.0 Software is an easy-to-use Windows 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 Standard features of Torque 1.0 include: peak torque capture, multi-axes graphing, measured parameter vs. time, adjustable sampling rates and polynomial curve fitting.

TRANSDUCER

®

Excel spreadsheet.

®

Accessories Model # Torque Transducer Connector Cable (5/10/20

m)

11

ER 113

1.3.3 TM 314 – TM 317

TM 314 – TM 317

Data Sheet

Magtrol TM Series In-Line Torque TransducersChapter 1 – Introduction

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%

• Overload Limit: 400% (TM 317 up to 280%)

• High Speed Applications: up to 16,000 rpm

• Non-Contact (no sliprings)

• No Electronic Components in Rotation

• High Electrical Noise Immunity

• Single DC Power Supply: 20 VDC to 32 VDC

• Immediate Speed Detection

• Adjustable Torque Signal Frequency Limitation

• Built-in Test Function

• Stainless Steel Shaft

• EMC Susceptibility Conforms to European Standards

DESCRIPTION

Magtrol’s In-Line Torque Transducers provide extremely accurate torque and speed measurement over a very broad range. Each model has an integrated conditioning electronic module providing a 0 to ±10 VDC torque output and an open collector speed output. Magtrol Torque Transducers are very reliable, providing high overload protection, excellent long term stability and high noise immunity.

All transducer models employ our unique non-contact differential transformer torque measuring technology. This measuring technology offers many benefits, most notably that no electronic components rotate during operation.

To provide customers with several price/performance options, Magtrol offers two torque transducer models: high accuracy (TM series) and high speed with high accuracy (TMHS).

Each transducer consists of a hardened stainless steel shaft with smooth or splined shaft ends, an anodized aluminium housing containing the measurement conditioner. The integrated electronic circuit,

guide bearings and an electronic

Model TM 316 Torque Transducer

supplied by single DC voltage, provides torque and speed signals without any additional amplifier. The transducer is a stand-alone measuring chain. Connections are made by means of a 6-pole male connector mounted on the housing. A removable aluminium base, delivered as standard, allows fixed mounting of the transducer.

APPLICATIONS

TM and TMHS Series Torque Transducers provide dynamic torque and speed measurement of:

• Propellers - aerospace, marine and helicopter

• Windshield wipers, electrical windows, starters, generators and brakes in automobile industry

• Pumps - water and oil

• Reduction gears and gearboxes

• Clutches

• Motorized valves

• Drills, pneumatic tools and other machine tools

BASIC SYSTEM CONFIGURATION

TORQUE

TRANSDUCER

TM 314 – TM 317

Power Supply 20 to 32 VDC / 100 mA max.

Test

Torque 0 to ±10 VDC (max.)

Speed

12

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).

Model

314 / X21 314 / X31 315 / X21 315 / X31 316 / X21 317 / X21

Nominal Rated Torque Torsional Stiffness Moment of Inertia Weight

N·m lb·ft N·m/rad lb·ft/rad kg·m² lb·ft·s² kg lb

1,000 737 3.28 × 10

2,000 1,475 6.56 × 10

5,000 3,687 1.94 × 10

10,000 7,375 2.26 × 10

5

2.419 × 1063.01 × 10-32.21 × 10

5

4.838 × 1063.30 × 10-32.43 × 10

6

1.4 × 1079.95 × 10-37.32 × 10-320.0 44.1

6

1.7 × 1071.18 × 10-28.66 × 10-322.3 49.2

9.2 20.3

-3

9.9 21.8

10.1 22.3

-3

10.8 23.8

series ratings

The ratings in the following table apply to all standard Torque Transducer models 314–317.

Stand ard Ve rsi on Model TM Se ries TMHS Ser ies

TORQUE MEASUREMENT

Rated Torque (RT) 314–317 0 to ±100% of RT Maximum Dynamic Torque Peak Value

(Overload Capacity) Maximum Dynamic Torque Without Damage

(Overload Limit)

Combined Error of Linearity and Hysteresis to 100% of RT

Combined Error of Linearity and Hysteresis from 100 to 200% of RT

Temperature Influence on the Zero/Sensitivity:

• In the Compensated Range +10 °C to +60 °C 314–317 < ±0.1% of RT/10K

• In the Compensated Range -25 °C to +80 °C < ±0.2% of RT/10K Influence of Speed on the Zero Torque Signal 314–317 < ±0.01% of RT/1000 rpm Long-term Stability of Sensitivity 314–317 < ±0.05% of RT/year

SPEED MEASUREMENT

Rated Range of Use

Number of Teeth 314–317 60 Z Minimum Speed Detection 314–317 1 rpm

ENVIRONMENT

Storage Temperature Range 314–317 -40 °C to +100 °C Operating Temperature Range 314–317 -40 °C to +85 °C Mechanical Shock 314–317 according to IEC 68.2.27 / Class D3 Vibration 314–317 according to IEC 68.2.6 / Class D3 Protection Class 314–317 IP 44

MECHANICAL CHARACTERISTICS

Shaft Ends

Balancing Quality 314–317 G1 according to ISO 1940 Foot Support (Base Mount) 314–317 included

INPUT AND OUTPUT SIGNALS

Power Supply (max. voltage / current) 314–317 20 to 32 VDC / 100 mA Torque Output (rated / max.) 314–317 ±5 / ±10 VDC Filter Cutoff (frequency) 314–317 5000, 2500, 1000, 500, 200, 100, 40, 20, 10, 5, 2, 1 Hz

Speed Output (frequency) 314–317

CONNECTORS

Counter Connector (female) 314–317 optional (P/N 957.11.08.0081)

314–317 0 to ±200% of RT

314–316

317

314–316 < ±0.1% of RT

317 < ±0.15% of RT

314–316 < ±0.1% of measured value

317 < ±0.15% of measured value

314–315 1 to 7,000 rpm 1 to 16,000 rpm 316–317 1 to 5,000 rpm 1 to 12,000 rpm

314–315 splined or keyway 316–317 splined

open collector (15 Ω in series), max. 30 VDC,

0 to ±400% of RT 0 to ±280% of RT

protected against short-circuits

13

Magtrol TM Series In-Line Torque TransducersChapter 1 – Introduction

Dimensions

TM 314 – TM 317

operating principles

The measuring system, based on the principle of a variable, torqueproportional transformer coupling, consists of two concentric cylinders shrunk on the shaft on each side of the shaft’s deformation zone, and two concentric coils attached to the housing.

Both cylinders have a circularly disposed coinciding row of slots and rotate with the shaft inside the coils. An alternating current with the frequency of 20 kHz flows through the primary coil. When no torque is applied, the slots on the two cylinders fail to overlap. When torque is applied, the deformation zone undergoes an angular deformation and the slots begin to overlap.

Thus a torque-proportional voltage is on the secondary coil. The conditioning electronic circuit incorporated in the transducer converts the voltage to a nominal torque signal of 0 to ±5 VDC. A low-pass filter (Butterworth/2nd order), adjustable from 5 kHz to 1 Hz, allows tuning of the torque signal frequency limitation.

An optical sensor reads the speed on a toothed path machined directly on the measuring system. The electronic conditioner outputs a frequency signal proportional to the shaft rotational speed. An active circuit compensates the zero and sensitivity temperature drifts within a tolerance of 0.1% / 10 K.

tm anD tmHs transDucers witH Keyway sHaFt

M CC

* Centering Seat

B

60°

A*

J

H Q

G

F

C

D

E

K

L

N

A

BCF

E

D

CAUTION!

ROTATING PARTS

IN OPERATION.

STOP SYSTEM BEFORE

PERFORMING MAINTENANCE.

R

S

MM

UU

T

TT

N

AA

SS

U

NOTE:

Original dimensions are in Metric units. Dimensions converted to English have been rounded up to 3 or 4 decimal places.

Model units Ø A Ø B Ø C Ø D E F G H J K L M N Q R S Ø T U

125g6 106 23 17 M16 12 36 45 67.7 26.8 106 294 80 25 68.5 65 50h6 79.5

314/X31

315/X31

Model units V X Y Z AA CC DD EE FF GG HH Ø JJ MM SS TT UU

314/X31

315/X31

mm

4.9207

in

mm

in

mm

in

mm

in

4.173 0.906 0.669 M16 0.472 1.417 1.772 2.665 1.055 4.173 11.575 3.150 0.984 2.697 2.559

4.9197 125g6 106 23 17 M16 12 36 45 87.7 26.8 106 334 80 25 88.5 85 50h6 99.5

4.9207

4.173 0.906 0.669 M16 0.472 1.417 1.772 3.453 1.055 4.173 13.150 3.150 0.984 3.484 3.346

4.9197

18 10 134 154 98 93

0.709 0.394 5.276 6.063 3.858 3.661

18 10 134 154 98 93

0.709 0.394 5.276 6.063 3.858 3.661

Y

Z

90

(

3.5433

3.5414

90

(

3.5433

3.5414

0

-0.05

0

-0.05

)

X

V

JJ

60 ±0.025 10 100 120 ±0.05 11 60.0 9h11 57 14h9

2.3632

0.394 3.937

2.3612

60 ±0.025 10 100 120 ±0.05 11 59.7 9h11 57 14h9

2.3632

0.394 3.937

2.3612

4.7264

4.7224

4.7264

4.7224

0.433 2.362

0.433 2.350

GG HH

0.3543

0.3508

0.3543

0.3508

EE

1.9685

1.9679

1.9685

1.9679

2.244

DD

FF

3.130

3.917

0.5512

0.5495

0.5512

0.5495

14

Magtrol TM Series In-Line Torque Transducers

AA

DD

Chapter 1 – Introduction

Dimens ions

TM 314 – TM 317

tm anD tmHs transDucers witH splineD sHaFt

M CC

R

S

MM

NN

PP

U

X

V

QQ - Splines according to DIN 5481 January 1952

* Centering

T*

QQ

Seat

RR*

JJ

H Q

G

* Centering Seat

B

60°

A*

F

C

D

E

NOTE:

Original dimensions are in Metric units. Dimensions converted to English have been rounded up to 3 or 4 decimal places.

J

K

L

N

A

B C F

E

D

CAUTION!

ROTATING PARTS

IN OPERATION.

STOP SYSTEM BEFORE

PERFORMING

MAINTENANCE.

W

Y

Z

P

Model units Ø A Ø B Ø C Ø D E F G H J K L M N P Q R S Ø T U V

125g6 106 23 17 M16 12 36 45 50.7 26.8 106 260 80 32 25 51.5 48 44h6 62.5 18

314/X21

315/X21

316/X21

317/X21

mm

4.9207

in

mm

in

mm

in

mm

in

4.173 0.906 0.669 M16 0.472 1.417 1.772 1.996 1.055 4.173 10.236 3.150 1.260 0.984 2.028 1.890

4.9197 125g6 106 23 17 M16 12 36 45 70.7 26.8 106 300 80 32 25 71.5 68 44h6 82.5 18

4.9207

4.173 0.906 0.669 M16 0.472 1.417 1.772 2.784 1.055 4.173 11.811 3.150 1.260 0.984 2.815 2.677

4.9197 155g6 135 28.4 21 M20 15 42 53 82.7 25.8 124 340 80 33 24 83.5 80 55h6 94.5 18

6.1018

5.315 1.118 0.827 M20 0.591 1.654 2.087 3.256 1.016 4.882 13.386 3.150 1.299 0.945 3.287 3.150

6.1008 155g6 135 28.4 21 M20 15 42 53 107.7 25.8 124 390 80 33 24 108.5 105 60h6 119.5 18

6.1018

5.315 1.118 0.827 M20 0.591 1.654 2.087 4.240 1.016 4.882 15.354 3.150 1.299 0.945 4.272 4.134

6.1008

KK

LL

GG

HH

N

FF

EE

1.7323

2.461 0.709

1.7317

1.7323

3.248 0.709

1.7317

2.1654

3.721 0.709

2.1646

2.3622

4.705 0.709

2.3615

Model units W X Y Z AA CC DD EE FF GG HH Ø JJ KK LL MM NN PP QQ Ø RR

92 10 134 154 98 93

314/X21

315/X21

316/X21

317/X21

mm

3.622 0.394 5.276 6.063 3.858 3.661

in

92 10 134 154 98 93

mm

3.622 0.394 5.276 6.063 3.858 3.661

in

106 10 150 170 113.5 93

mm

4.173 0.394 5.905 6.693 4.468 3.661

in

106 10 150 170 113.5 93

mm

4.173 0.394 5.905 6.693 4.468 3.661

in

options

Flanges

Flanges are optional for torque transducers with splined shaft ends. Flange drawing is available on request.

90

105

0

60±0.025 10 100 120±0.05 11 M8×10 36 42 28 8 45×50 52h6

(

)

-0.05

3.5433

2.3632

3.5414

0

(

-0.05

3.5433

3.5414

0

(

-0.05

4.1338

4.1319

0

(

-0.05

4.1338

4.1319

)

0.394 3.937

2.3612

60±0.025 10 100 120±0.05 11 M8×10 36 62 48 8 45×50 52h6

2.3632

0.394 3.937

2.3612

80±0.025 10 140 160±0.05 11 M8×10 50 70 50 8 60×65 70h6

3.1506

0.394 5.512

3.1486

80±0.025 10 140 160±0.05 11 M8×10 50 95 80 8 65×70 72h6

3.1506

0.394 5.512

3.1486

4.7264

4.7224

4.7264

4.7224

6.3012

6.2972

6.3012

6.2972

0.433

M8×

1.417 1.654 1.102 0.315 45×50

0.394

M8×

1.417 2.441 1.890 0.315 45×50

0.394

M8×

1.968 2.756 1.968 0.315 60×65

0.394

M8×

1.968 3.740 3.150 0.315 65×70

0.394

Description Model P/N

Flange for Model 314/X 21 FTM 214 415-214-960-011 Flange for Model 315/X 21 FTM 215 415-215-960-011 Flange for Model 316/X 21 FTM 216 415-216-960-011 Flange for Model 317/X 21 FTM 217 415-217-960-011

15

2.0472

2.0465

2.0472

2.0465

2.7559

2.7552

2.8346

2.8339

Magtrol TM Series In-Line Torque TransducersChapter 1 – Introduction

TM SERIES

System Options

system options anD accessories

Unit Under Test

Mandatory for high speed applications.

Unit Under Test

For low speed applications only, uses single-element

couplings to create a shorter drive train.

Couplings

When Magtrol TMB, TM and TMHS Series Torque Transducers are to be mounted in a drive train, double-element miniature couplings are the ideal complement, although single-element couplings can be used for low speed applications. Several manufacturers provide adequate couplings for both supported and suspended drive train installations. The criteria for selecting appropriate couplings for torque measurement is as follows:

• High torsional spring rate: Ensures high torsional stiffness & angular precision (should be > 3 times the torque transducer stiffness)

• Clamping quality (should be self-centering & of adequate strength)

• Speed range

• Balancing quality (according to speed range)

• Alignment capability

The higher the speed of the application, the more care is required in selecting the coupling and assembling (alignment and balancing) the drive train configuration. Your Magtrol sales representative can assist you in choosing the right coupling for your transducer.

Torque Speed Box

Magtrol’s TSB Torque Speed Box allows data acquisition from two torque transducers simultaneously and provides the torque’s analog signal output and speed’s TTL signal output.

TORQUE TRANSDUCER

A B C F

E

D

CAUTION!

ROTATING PARTS IN OPERATION.

STOP SYSTEM BEFORE

PERFORMING MAINTENANCE.

Coupling Coupling

Supported Installation

TM SERIES

TORQUE TRANSDUCER

MAINTENANCE. PERFORMING

STOP SYSTEM BEFORE

IN OPERATION.

ROTATING PARTS

CAUTION!

D

Coupling Coupling

E

BCF

A

Suspended Installation

TM 314 – TM 317

PC

Torque 1.0

Software

TM Series

Torque Transducer

SPEED TORQUE

RS-232C

SYSTEM

SELECT

TARE

MAGTROL

Model 3410

Torque Display

PC-Based System Configuration

Torque Transducer with Model 3410 Display

and Torque 1.0 Software

Torque Transducer Displays

Magtrol offers two different Torque Displays (Models 3410 and

6400) which supply power to any TM/TMHS/TMB Transducer and display torque, speed and mechanical power. Features include:

• Adjustable English, metric and SI torque units

• Large, easy-to-read vacuum fluorescent display

• Built-in self-diagnostic tests

• Overload indication

• Tare function

• RS-232 interface

• Torque and speed outputs

• Closed-box calibration

• Includes Magtrol Torque 1.0 Software

The Model 6400 Display has the following additional features:

• Pass/fail torque-speed-power testing capabilities

• RS-232 and IEEE-488 interface

• Auxiliary analog input

Torque 1.0 Software

Magtrol’s Torque 1.0 Software is an easy-to-use Windows 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 Standard features of Torque 1.0 include: peak torque capture, multi-axes graphing, measured parameter vs. time, adjustable sampling rates and polynomial curve fitting.

TRANSDUCER

®

Excel spreadsheet.

®

Accessories Model #

Torque Transducer Connector Cable (5/10/20 m)

ER 113

16

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.

There are two different ways of mounting TM Torque Transducers: suspended and supported installation.

2.1.1 SuSpended InSTallaTIon

Both the measuring shaft and torque transducer housing are supported by the driving and driven machine shafts via couplings (see ﬁgure 2–1). In this conﬁguration, couplings offering only one degree of freedom are adequate to avoid a hyperstatic mounting.

STOP SYSTEM BEFORE

!

CAUTION!

ROTATING PARTS IN OPERATION.

PERFORMING

MAINTENANCE.

BAF

E

C

D

2.1.1.1 Advantages

• Single-element couplings are less expensive than double-element couplings.

• Shorter drive train leading to a higher torsional resonance frequency (as compared to doubleelement couplings).

2.1.1.2 Disadvantages

• Increase of radial play as the torque transducer is not directly ﬁxed to the test bench. Consequently, the critical speed is lower than with a supported installation.

Note: The low friction torque generated by the bearings, as well as the

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 (see Figure 2–2). Here, couplings with two degrees of freedom must be used in order to avoid hyperstatic mountings.

Figure 2–1 Suspended Installation

weight of the built-in electronic housing, results in only the shaft being driven by the rotating system.

17

CAUTION!

ROTATING PARTS

IN OPERATION.

STOP SYSTEM BEFORE

PERFORMING MAINTENANCE.

D

C

B

A F

E

!

2.1.2.1 Advantages

F

r

F

r

F

a

F

a

CAUTION!

ROTATING PARTS

IN OPERATION.

STOP SYSTEM BEFORE

PERFORMING

MAINTENANCE.

D

C

B

A

F

E

!

F

• Increased critical speed due to less shaft bending.

2.1.2.2 Disadvantages

• Longer overall length of the test bench due to the use of double-element couplings.

• Increased price due to the higher price of double-element couplings.

Magtrol TM Series In-Line Torque TransducersChapter 2 – Installation / Conﬁguration

Figure 2–2 Supported Installation

Note : Supported installations are required when larger misalignments

between the different elements of the system are a possibility, as well as with high rotational speeds.

High-performance couplings can be realized by mounting ﬂanges directly onto a splined torque transducer shaft. (Not available on all models.)

2.1.3 TM/TMB In VerTIcal InSTallaTIon

a

F

r

F

B C

A

D

PERFORMING

IN OPERATION.

MAINTENANCE.

F E

ROTATING PARTS

CAUTION!

STOP SYSTEM BEFORE

!

r

F

2.2 PARASITIC FORCES

Correct!

Electronic and connector left from shaft when looking into the connector!

Caution: Please refer to manuals for max. acceptable Fa force!

Wrong!

F

r

!

STOP SYSTEM BEFORE

CAUTION!

ROTATING PARTS

E

F

MAINTENANCE.

IN OPERATION.

PERFORMING

D

A

C

B

F

r

F

a

Incorrectly mounted torque transducers can generate parasitic forces on the measuring shaft in radial (F

and axial direction (Fa) (see Figure 2–3).

r )

F

a

r

Suspended Installation Supported Installation

STOP SYSTEM BEFORE

!

CAUTION!

ROTATING PARTS IN OPERATION.

PERFORMING

MAINTENANCE.

D

C

E

BAF

r

F

a

Figure 2–3 Parasitic Forces

18

STOP SYSTEM BEFORE

!

BAF

E

C

D

CAUTION!

ROTATING PARTS

IN OPERATION.

PERFORMING MAINTENANCE.

r

F

a

Magtrol TM Series In-Line Torque Transducers

2.2.1 radIal ForceS (BendIng)

Radial forces (Fr 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. This effect is particularly noticeable at high speeds.

Caution : in extreme Cases, a high bending forCe may Cause permanent

deformation of the measuring shaft, leading to false measuring results.

The following table lists the maximum radial forces Fr allowed for TMB, TM and TMHS Series torque transducer shafts in suspended and supported installations.

Model

TM 301 * 8 N/A

max.

F

r

(Suspended

installations)

(Supported installations) TM / TMB

(if available)

N N N

Chapter 2 – Installation / Conﬁguration

max.

F

r

TMHS

TM 302 * 16 N/A

TM 303 * 25 25

TM 304 20 50 50

TM 305 40 80 80

TM 306 70 120 120

TM 307 60 120 120

TM 308 80 160 120

TM 309 60 150 150

TM 310 120 300 280

TM 311 200 410 280

TM 312 300 570 420

TM 313 500 550 410

TM 314 800 900 680

TM 315 1100 850 640

TM 316 2200 1460 1090

TM 317 2200 1300 980

* Suspended installation is not recommended for these models.

19

2.2.2 axIal ForceS (ThruST)

In suspended installations, pure thrust forces (Fa 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.

In supported installations, axial thrust forces produce a strain on the bearings. This leads to premature wear of the bearings and an increase of the residual torque. In this case, the maximum allowed axial force for the transducer is lower than the allowed force in the case of suspended installation.

Magtrol TM Series In-Line Torque TransducersChapter 2 – Installation / Conﬁguration

Note: It is important to avoid the simultaneous application of radial and

axial forces on the measuring shaft of a transducer, especially with supported installations.

The following table lists the maximal axial forces F

allowed for TMB, TM and TMHS Series

a

transducer shafts in suspended and supported installations.

max.

F

a

Model

TM 301 600 35

TM 302 600 35

TM 303 1 000 35

TM 304 1 100 100

TM 305 1 500 100

TM 306 2 500 100

TM 307 3 500 100

TM 308 4 000 100

TM 309 4 500 120

(Suspended

installations)

N N

Fa max.

(Supported

installations)

TM 310 6 000 120

TM 311 10 000 120

TM 312 20 000 150

TM 313 30 000 150

TM 314 60 000 200

TM 315 80 000 200

TM 316 150 000 200

TM 317 150 000 200

20

Magtrol TM Series In-Line Torque Transducers

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.

Figure 2–4 Radial Displacement

Chapter 2 – Installation / Conﬁguration

x

2.3.1 perMITTed VIBraTIonS on MeaSurIng ShaFT

The periodic displacement of the measuring shaft generates vibrations. These vibrations express themselves in either speed (in m/s) or acceleration (in m/s² or g).

Note: "g" is normally used as a unit for acceleration. It represents the

Earth's acceleration of 9,81 m/s², often rounded up to 10 m/s².

Both of these parameters depend on the radial displacement and the speed of the shaft. The formulas used to calculate this speed and acceleration are as follows:

Speed: v = 2 · π · n · x [m/s] Acceleration: a = 4 · π² · n² · x [m/s²]

"x" represents radial displacement, expressed in meters (see Figure 2–4)

"n" represents rotational speed, in s

The vibratory acceleration of the above is illustrated with the graph in Figure 2–5.

-1

21

Magtrol TM Series In-Line Torque TransducersChapter 2 – Installation / Conﬁguration

Acceleration a [g]

x = 0.1 mm

10

9

8

7

6

5

4

3

2

1

0

x = 0.05 mm

x = 0.02 mm

x = 0.01 mm

36000 30000 24000 18000 12000 6000 0

Speed n [rpm]

Figure 2–5 Vibratory Acceleration

(as a result of radial displacement and rotational speed)

x = 0.005 mm

x = 0.002 mm

x = 0.001 mm

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

• 90 minutes of vibration applied along each of the 3 axes (x, y, z)

2.3.1.2 Sinusoidal Vibration

• Sweep between 10 Hz and 500 Hz at a rate of 1 octave / minute

• From 10 Hz to 60 Hz: 0.35 mm peak-to-peak amplitude

• From 60 Hz to 500 Hz: 5 g peak-to-peak amplitude

• Cycle performed for 90 minutes along each of the 3 axes (x, y, z).

Note: The vibratory level as defined in section 2.3.1.2– Sinusoidal

Vibration should not be exceeded on a regular basis.

22

Magtrol TM Series In-Line Torque Transducers

2.3.2 Torque SIgnal condITIonIng elecTronIc cIrcuIT

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. 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 (see Figure 2–6). The various setting possibilities are indicated on a label afﬁxed to the back of this cover.

Some applications may warrant ﬁne adjustment of the torque transducer zero point. To activate the offset adjustment potentiometer, simply positioning the SW12 micro-switch to ON. A full-scale zero adjustment of ±10% equivalent to ±0.5 V can then be carried out by the potentiometer. With the SW12 micro-switch to OFF, the default settings are used.

Chapter 2 – Installation / Conﬁguration

Note: There are no functions allocated to the SW11 micro-switch.

Label affixed to cover of

transducer's built-in electronics

Offset Adjustment

Potentiometer

ON

1 2 3 4 5 6 7 8 9 10 1211

ON

1

Hz

1 2 3 4 5 6 7 8 9 10 1211

ON

2

Hz

1 2 3 4 5 6 7 8 9 10 1211

ON

5

Hz

1 2 3 4 5 6 7 8 9 10 1211

ON

10 Hz

1 2 3 4 5 6 7 8 9 10 1211

ON

20 Hz

1 2 3 4 5 6 7 8 9 10 1211

ON

40 Hz

1 2 3 4 5 6 7 8 9 10 1211

SW11 : N/C SW12 : ENABLE POT.SW1 - SW10 : FILTER

ON

100

Hz

1 2 3 4 5 6 7 8 9 10 1211

ON

200

Hz

1 2 3 4 5 6 7 8 9 10 1211

ON

500

Hz

1 2 3 4 5 6 7 8 9 10 1211

ON

1000

Hz

1 2 3 4 5 6 7 8 9 10 1211

ON

2500

Hz

1 2 3 4 5 6 7 8 9 10 1211

ON

5000

Hz

1 2 3 4 5 6 7 8 9 10 1211

SW1 - SW12

Micro-switches

Figure 2–6 SW1 – SW12 Micro-switches and Offset Adjustment Potentiometer

23

2.4 MOUNTING LIMITS

J

During static measurements, the nominal torque may be surpassed in order to reach the plastic deformation torque limit. When exceeding the nominal torque, any extraneous loads such as axial, shearing and bending forces must be avoided.

2.4.1 dynaMIc Torque

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 naTural Frequency oF drIVe TraIn

In order to determine the dynamic torque and frequency response, and to prevent any damage to the system, it is necessary to calculate the natural frequency of the drive train torsional oscillations. In this system, however, the deformation area of the measuring ﬂange is the weakest link in the rotating measuring chain and is subject to torsional vibrations.

Magtrol TM Series In-Line Torque TransducersChapter 2 – Installation / Conﬁguration

In practice, this situation can generate rather complex relations which require demanding calculations. This may be, for instance, the case for the physical model in which the drive chain is a combination of torsion springs with intermediate ﬂywheel masses. chain (Figure 2–7) can often be used

Note: For a detailed analysis of dynamic response, publications on structural

.

However, the following simpliﬁed model of a drive

mechanics should be consulted.

2

J

1

Figure 2–7 Simpliﬁed Drive Train Model

C

t

JJ

1

=

0

π

2

+

Cf

t

21

JJ

⋅

21

With: f0 Natural frequency of system [Hz]

C

J

Measuring shaft torsional stiffness [Nm/rad]

t

Moment of inertia (driving machine + coupling + ½ of the measuring shaft) [kgm²]

1

Moment of inertia (driven machine + coupling + ½ of the measuring shaft) [kgm²]

2

24

Magtrol TM Series In-Line Torque Transducers

A(f)

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.

The torsional spring consists only of the deformation zone of the measuring shaft. The torsional stiffness values (C

) are indicated in the technical data sheets (see Section 1.3). J1 and J2 are the two

t

moments of inertia acting on each side of the deformation zone. They can be calculated by adding the moments of inertia of each individual element. The moment of inertia of the measuring shaft is also indicated in the data sheet. Consult with the suppliers of the couplings, driving element(s) and driven element(s) in order to obtain the inertia ratings of these drive train components.

The natural torsional frequency (f

) determines the following:

0

• the frequency response of the torque measuring system

• whether or not rapid variations in torque can be accurately sensed

• whether or not the torque signal is ampliﬁed or attenuated by the dynamics of the drive train

The transfer response is plotted in Figure 2–8 for various quality factor values (Q), which are dependent upon the amount of damping in the torsional system. The graph charts the factor by which the torque will be ampliﬁed, depending on the frequency of the torsional oscillations.

A

0

22

20

Q = 1

Q = 30

Q = 10

Q = 3

f

0

18

16

14

12

10

8

6

4

2

0

0,2 0,4 0,6 0,8 1,0 1,2 1,4 1,6 1,8 2,0

Figure 2–8 Frequency Response Graph

Note: The system should be conﬁgured and operated in a manner so that

the natural frequency is avoided in everyday operation. The transfer function should be as close to 1 as possible. Consequentially, the frequency of the drive train torsional oscillations should be less than ~0.5 f

.

0

25

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

Model

TM 301 *

TM 302 171

TM 303 255

TM 304 355

TM 305 476

TM 306 665

TM 307 903

TM 308 1058

TM 309 613

Magtrol TM Series In-Line Torque TransducersChapter 2 – Installation / Conﬁguration

Frequency

Hz

TM 310 879

TM 311 1096

TM 312 TM 312/021

TM 313 TM 313/021

TM 314 TM 314/021

TM 315 TM 315/021

TM 316 1219

TM 317 1212

1168 1150

1405 1338

1227

1269

1302 1334

* These values are not yet available.

Note: All three versions—TMB, TM and TMHS—of each model are

equipped with the same measuring shaft.

26

Magtrol TM Series In-Line Torque Transducers

200% M

2.4.4 MaxIMuM dynaMIc aMplITude

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

-200 % M

and +200 % M

nominal

0

, as shown in Figure 2–9.

nominal

Chapter 2 – Installation / Conﬁguration

nominal

= 400% M

Dynamic Amplitude

-200% M

nominal

2.5 PROTECTIVE SYSTEMS

Warning! all rotating parts must Be fitted With a

protective system to ensure that 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.

The following precautions concerning protective equipment of the drive train must be observed:

• Protective elements must prevent access to moving parts (during test).

• Protective elements must cover all parts which can cause crushing or cutting, and protect against projections of parts having become loose.

• Avoid attaching protective elements to rotating parts.

• Keep protective elements at a sufﬁcient distance away from rotating parts.

Figure 2–9 Admissible Dynamic Load

Figure 2–10 shows a good example of a protective system. All parts of the bench are accessible, but

the covers prevent any risk to the user when closed.

27

Magtrol TM Series In-Line Torque TransducersChapter 2 – Installation / Conﬁguration

Figure 2–10 Example of Protective System

28

Magtrol TM Series In-Line Torque Transducers

Model 3410

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.

Chapter 2 – Installation / Conﬁguration

2.6.1

Model 3410 Torque dISplay

The Model 3410 Torque Display (formerly Model 3400) processes the torque and speed signals, displays the measured torque and speed values, and displays the calculated power value.

Figure 2–11 Model 3410 Torque Display

With its RS-232 interface, data can be sent to a PC for processing with the LabVIEW™-based Torque 1.0 Software that is supplied with each 3410 Torque Display.

PC

Torque 1.0

Software

TM Series

Torque Transducer

SPEED TORQUE

RS-232C

SYSTEM

SELECT

TARE

MAGTROL

TRANSDUCER

Figure 2–12 PC-Based System Conﬁguration with Model 3410 Display

Note: For additional information regarding the operation of the Model

3410 Display, refer to the corresponding User's Manual (available online at www.magtrol.com).

29

2.6.2 Model 6400 Torque TranSducer dISplay

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).

Figure 2–13 Model 6400 Torque Transducer Display

With either its RS-232 or IEEE-488 interface, data can be sent to a PC for processing with the LabVIEW™-based Torque 1.0 Software (formerly TM Software) that is supplied with each 6400 Torque Display.

Magtrol TM Series In-Line Torque TransducersChapter 2 – Installation / Conﬁguration

TM, TMHS or TMB

Torque Transducer

Note: For additional information regarding the operation of the Model

Data Acquisition

System

±10 VDC

Auxiliary Input

Device

TORQUE METER

TORQUE SPEED

Power Supply (AC)

Model 6400 6400A

MAGTROL, INC. BUFFALO, NY

Input Power 120V/60Hz 240V/50 Hz

AUX.

INPUT

RS-232C

GPIB/IEEE–488

FUSE (5×20mm):

CAUTION: DOUBLE POLE FUSING

16VA 50/60Hz

120V UL/CSA 200mA 250V SB 240V IEC 80mA 250V T

EARTH

GROUND

RS-232

MODEL 6400

TORQUE TRANSDUCER DISPLAY

Figure 2–14 PC-Based System Conﬁguration with Model 6400 Display

3410 Display, refer to the corresponding User's Manual (available online at www.magtrol.com).

GPIB

or

PC

TM or

Torque 1.0

Software

30

Magtrol TM Series In-Line Torque Transducers

Chapter 2 – Installation / Conﬁguration

2.6.3 Model dSp6001 prograMMaBle dynaMoMeTer conTroller

Magtrol’s Model DSP6001 Programmable Dynamometer Controller employs state-of-the-art Digital 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.

Figure 2–15 Model DSP6001 Programmable Dynamometer Controller

Complete PC control of the test system can be attained via the IEEE-488 or RS-232 interface and Magtrol's M-TEST Software. This LabVIEW™-based program is equipped with ramp, curve and manual testing capabilities to help determine the performance characteristics of a motor under test, and also provides pass/fail testing for production line and inspection applications.

Below is just one example of a system conﬁguration in which both a Magtrol dynamometer and torque transducer are utilized.

Hysteresis Dynamometer (HD)

TM Torque Transducer

GPIB

or

PC

M-TEST

AC Mains

DSP6001 DYNAMOMETER CONTROLLER

BRAKE

ACCESSORY

TORQUE–SPEED

CTRL OUT

BRAKE FUSE

UL/CSA 1.25A 250V SB

(5×20mm):

IEC 1A 250V T

OUTPUT

AUX / TSC2

DYNAMOMETER / TSC1

No Connection

SUPPLY 2

SUPPLY 1

RS-232C

MAGTROL, INC. BUFFALO, NY

Hysteresis on TSC1 only

GPIB/IEEE–488

Motor Under

Test

FUSE (5×20mm):

CAUTION: DOUBLE POLE FUSING

75VA 50/60Hz

120V UL/CSA 800mA 250V SB 240V IEC 315mA 250V T

EARTH

GROUND

RS-232

Figure 2–16 PC-Based System Conﬁguration with Model DSP6001 Controller

Note: For more system conﬁguration possibilities, and detailed information

regarding the operation of the DSP6001 Controller, refer to the corresponding User's Manual (available online at www.magtrol. com).

31

2.7 ELECTRICAL CONNECTIONS

Magtrol TM Series In-Line Torque TransducersChapter 2 – Installation / Conﬁguration

Note: The connecting cable assembly (ER 113-0X) consists of a cable with

Connecting the TM In-Line Torque Transducer is extremely simple. Having installed the drive train, only one electrical cable needs to be connected for the system to be operational.

2.7.1 groundIng

Caution: before ConneCting the tm torque transduCer to the signal

The torque transducer, test bench, driving machine and driven machine must be commonly grounded.

With supported torque transducer installations, the support connects the transducer with the test bench grounding. On suspended installations, a special wire needs to be drawn from the transducer's housing to the common ground (as shown in Figure 2–17).

4 shielded twisted pairs of wires to connect the torque transducer to its signal processing electronic unit. This assembly must be ordered separately.

proCessing unit, the transduCer's housing must first be earth- grounded.

CAUTION!

ROTATING PARTS

IN OPERATION.

STOP SYSTEM BEFORE

!

PERFORMING

MAINTENANCE.

BAF

E

C

D

Figure 2–17 Common Grounding

32

Magtrol TM Series In-Line Torque Transducers

2.7.2 connecTIng caBle

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. The following signals are transmitted (see Figures 2–18 and 2–19) :

Chapter 2 – Installation / Conﬁguration

A

F

B

EDC

A. Power supply 20 to 32 V DC B. Torque signal -10 to +10 V DC C. N/C D. Power supply/torque grounding 0 V DC E. Test signal (high impedance) F. Speed signal (open collector)

Figure 2–18 6-pin Souriau Connector Conﬁguration

Note: The test function is only active when the input is grounded.

6 5

1213714

14 3 2

891011

1. N/C

2. N/C

3. Supply +24 V DC

4. Power supply grounding 0 V DC

5. Shield

6. N/C

7. N/C

8. N/C

9. N/C

10. Speed signal

11. N/C

12. Test signal

13. Torque signal grounding 0 V DC

14. Torque signal -10 to +10 V DC

Figure 2–19 14-pin Centronics Connector Conﬁguration

33

2.7.3 connecTIon To non-MagTrol elecTronIcS

To connect the torque transducer to electronic devices not manufactured by Magtrol, refer to the following connection diagram.

Magtrol TM Series In-Line Torque TransducersChapter 2 – Installation / Conﬁguration

A

B

C

D

E

F

TM Torque Transducer housing

Shield

BITE

(switch closed = BITE active)

(Supply 20 to 32 VDC) UAL

(+15V)

Torque O/P

OV

Sig

(Supply 0 V) OVAL

Shield

(-15V)

V

CC 5 to 30 VDC

R (pull-up)

1 kΩ

*

x 1

U Torque

Tacho O/P

Shield

Figure 2–20 Wiring Diagram for Connection to Non-Magtrol Electronics

* A Differential Ampliﬁer is required for elimination of potential DC voltage developing in the 0V leg (0VAL). 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..

2.7.3.1 Pull-up Resistance

A pull-up resistor must be incorporated into the circuit. Pull-up resistance should be set to the following, dependent upon the V

Note: If the electronics used for speed measurement already has its own

2.7.3.2 Tachometer Signal

The tachometer (tacho) signal must be shielded separately. For this purpose, Magtrol recommends using the Model ER 107 Cable Assembly (see

of the application:

CC

V

CC

Pull-up resistance

5 V DC 1 kW

20–32 V DC 4.7 kW

internal pull-up resistor, make sure the setting is in accordance with the table above.

Figure 2-21).

34

Magtrol TM Series In-Line Torque Transducers

Tacho O/P

: gray

: yellow

Chapter 2 – Installation / Conﬁguration

F

U

AL

OV

AL

Torque O/P

OV

Sig

BITE

Shield

: red

: blue

: white

: green

: brown

: yellow/black

Figure 2-21 ER 107 Pin Conﬁguration

A

D

B

D

D : shield

C

E

35

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.

Figure 3–1 TM Torque Transducer Principal Elements

The primary and secondary coil composing the differential transformer are separated by two concentric aluminum cylinders. These cylinders are connected to the torque measuring shaft—the external cylinder on one side of the deformation zone and the internal cylinder on the opposite side. Both cylinders have two series of slots on their surface. When there is no torque being applied to the measuring shaft, the slots in both cylinders fail to overlap. Because the cylinders are non-magnetic, there is total screening and differential induction cannot be generated between the primary and secondary coil.

As torque is applied to the shaft, the deformation zone undergoes increasing angular deformation. As torque is sensed, the overlap between the slots increases creating an opening for the induction ﬂux. The amount of differential induction is proportional to the applied torque. In this way, when the primary coil is excited by a sinusoidal voltage, the secondary coil produces a voltage whose magnitude is dependent on the applied torque.

36

Magtrol TM Series In-Line Torque Transducers

3.1.1 dIFFerenTIal TranSForMer

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. In addition, a constant current is supplied to the primary coil in order to determine the temperature of the entire measuring unit and to compensate the temperature signal.

The secondary coil consists of two windings in phase opposition. This determines the spacing between the cylinder slots and produces a torque-proportional dynamic voltage signal.

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.

3.3 BUILT-IN SELF-TEST CIRCUIT

The torque transducer's connector has a pin allocated for activating a test signal. When this pin is held low (logic 0), a test signal equivalent to +5 V DC is activated which superimposes itself to the torque measuring signal. Therefore, this self-test may be carried out at while the transducer is in use. The signal is supplied by the control electronics.

Chapter 3 – Operating Principles

The self-test circuit checks the correct functioning of the torque signal conditioning unit. This function, however, does not in any way obviate the need for a static calibration of the transducer.

37

4. Maintenance / Repair

4.1 MAINTENANCE

Magtrol TM Series In-Line Torque Transducers are virtually maintenance-free. This is due to the following aspects of their construction:

• Lifelong lubrication of the bearings.

• Transmission of the torque signal from the rotating measuring elements to the signal processing electronics by a process of induction rather than by using slip rings. This eliminates mechanical wear.

However, it may be necessary to change the bearings after extended use. 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. This is especially true when the transducer is operated at excessive rotational speeds, which results in the generation of axial and radial forces on the bearings.

Caution : the user should not attempt to Change the bearings himself. the

transduCer should be returned to magtrol for this operation.

similarly, the user should not attempt to Carry out revisions or

repairs of any kind on the meChaniCal or eleCtroniC Components making up the transduCer. if a problem is suspeCted, magtrol should be ContaCted so that arrangements Can be made to perform any repairs in the faCtory. failure to observe the above may lead to the transduCer being seriously damaged.

Note: The TM Transducer housing is sealed. If there is any evidence that

the housing has been opened and unauthorized modiﬁcations have been attempted, the warranty will be invalidated.

38

Magtrol TM Series In-Line Torque Transducers

4.2 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:

• Model number, part number, serial number, order number and date of acquisition

• Description of the defect and the conditions in which it appeared

• Description of the test bench (drawing, photographs, sketches, etc.)

• Description of the tested object (drawing, photographs, sketches, etc.)

• Description of the test cycle

Caution: maintenanCe must be performed by magtrol in order to guarantee

future measuring aCCuraCy.

To allow Magtrol to complete the work in the best possible time, carefully pack the torque transducer and follow the procedure outlined in the rear of this manual under Service Information.

Chapter 4 – Maintenance/Repair

39

Testing, Measurement and Control of Torque-Speed-Power • Load-Force-Weight • Tension • Displacement

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