Magtrol TM 300 Series User manual

TM 300 Series
In-Line Torque Transducers
User’s Manual
Via Paolo Uccello 4 - 20148 Milano
Tel [phone] Fax [phone] [email protected] www.dspmindustria.it

1st English Edition, rev. G– June 2011
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
Copyright ©2006–2008 Magtrol, Inc. All rights reserved.
Copying or reproduction of all or any part of the contents of this manual without the
express permission of Magtrol is strictly prohibited.
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.
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: _____________________________

i
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.

ii
The contents of this manual is subject to change without prior notice.
REVISION DATE
First English edition, revision G – June 2011
Revisions to this Manual
Date Edition Change Section(s)
20.06.11 1st Edition - rev. G Accuracy update for TMB 301 to 313 1.3.1, 1.3.2
26.05.11 1st Edition - rev. F Overload limit updated 1.3.1, 1.3.2, 1.3.3
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 1.3.2, 2.2.1, 2.2.2
and 2.4.3
01.10.07 1st Edition - rev. A Added information regarding connection to non-Magtrol electronics. 2.7.3

iii
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

iv
Table of Contents Magtrol TM Series In-Line Torque Transducers
TABLE OF FIGURES
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
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

v
Preface
PURPOSE OF THIS MANUAL
This manual contains information required for the installation and general use of Magtrol’s TM
Series In-Line Torque Transducers. To achieve maximum capability and ensure proper use, please
read this manual in its entirety before operating the unit. Keep the manual in a safe place for quick
reference whenever a question should arise.
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.
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.

vi
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! this introduces directives, procedures,
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.

1
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.

2
Magtrol TM Series In-Line Torque TransducersChapter 1 – Introduction
1.3 DATA SHEETS
1.3.1 TM 301 – TM 308
TM 301 – TM 308
Data Sheet
TM 301 – TM 308
In-Line Torque Transducers
1
www.magtrol.com
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.
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
Model TM 307
Torque Transducer
BASIC SYSTEM CONFIGURATION
TORQUE
TRANSDUCER
TM 301 – TM 308
Power Supply 20 to 32 VDC / 100 mA max.
Speed
Torque 0 to ±10 VDC (max.)
Test