Magtrol HD-106-1, HD-400-1, HD-400-2, HD-500-1, HD-600-1 User Manual

HD-1/HD-2 Series

Dial Weight

Dynamometers

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. 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 ©1999-2008 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.

1st Edition, rev. B – December 2008

Revisions To This Manual

The contents of this manual are subject to change without prior notice. Should revisions be necessary, updates to all
Magtrol User’s Manuals can be found at Magtrol’s web site at www.magtrol.com/support/manuals.htm.

Please compare the date of this manual with the revision date on the web site, then refer to the manual’s Table of
Revisions for any changes/updates that have been made since this edition.

REVISION DATE

1st Edition, Revision B – August 2008

TABLE OF REVISIONS

Date Edition Change Section(s)

12/18/08 1st Edition, Rev. B All dynamometers are now shipped with a speed pickup,

2-pin, and 14-pin cable.

12/18/08 1st Edition, Rev. B The Model 5400 Tachometer was replaced with the Model

3410 Torque Display as the primary speed readout option.
08/01/06 1st Edition, Rev. A Redesigned manual to be consistent with Magtrol format. all
12/1999 1st Edition First PDF version. ---

4.1

2.3.1

i

Table of Contents

REVISIONS TO THIS MANUAL ................................................................................................................I

REVISION DATE ..................................................................................................................................................................I

TABLE OF REVISIONS ....................................................................................................................................................... I

TABLE OF CONTENTS ...........................................................................................................................II

TABLE OF FIGURES ........................................................................................................................................................ III

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

1.1 UNPACKING YOUR DIAL WEIGHT DYNAMOMETER ......................................................................................... 1

1.2 TECHNICAL SPECIFICATIONS ................................................................................................................................ 1

1.2.1 HYSTERESIS BRAKE CONTROL POWER ................................................................................................ 1

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

2.1 COUNTER WEIGHTS ................................................................................................................................................. 2

2.2 DYNAMOMETER LEVELING ................................................................................................................................... 2

2.3 SYSTEM CONFIGURATION ...................................................................................................................................... 2

2.3.1 SPEED READOUTS ...................................................................................................................................... 2

2.3.2 POWER SUPPLIES ........................................................................................................................................ 2

2.3.3 CONNECTIONS............................................................................................................................................. 3

2.4 INITIAL CHECKOUT .................................................................................................................................................. 3

3. TESTING CONSIDERATIONS ............................................................................................................4

3.1 SAFETY ........................................................................................................................................................................ 4

3.2 ACCURACY ................................................................................................................................................................. 4

3.2.1 TORQUE SCALE GRADUATIONS .............................................................................................................. 5

3.3 POWER DISSIPATION ................................................................................................................................................ 5

3.3.1 POWER ABSORPTION CURVES.................................................................................................................5

3.4 FIXTURES AND COUPLINGS ................................................................................................................................... 9

3.5 WINDAGE .................................................................................................................................................................. 10

3.6 FRICTION ................................................................................................................................................................... 10

3.7 VIBRATION ................................................................................................................................................................ 11

3.8 COGGING ................................................................................................................................................................... 11

3.9 EDDY CURRENTS .................................................................................................................................................... 12

3.10 TEMPERATURE RISE ............................................................................................................................................... 12

4. OPERATING PRINCIPLES ...............................................................................................................13

4.1 SPEED ......................................................................................................................................................................... 13

4.2 TORQUE ..................................................................................................................................................................... 13

4.2.1 TORQUE STABILITY ................................................................................................................................. 13

5. CALIBRATION ..................................................................................................................................14

5.1 CALIBRATION PREPARATION ............................................................................................................................... 14

5.2 CALIBRATION PROCEDURE .................................................................................................................................. 14

ii

Magtrol Dial Weight Dynamometers

2. INSTALLATION/CONFIGURATION

Figure 2–1 Torque Scale .............................................................................................................................................2

3. TESTING CONSIDERATIONS

Figure 3–1 Dynamometer Side View ...........................................................................................................................6

Figure 3–2 HD-106-1 Power Absorption Curve .........................................................................................................6

Figure 3–3 HD-400-1/2 Power Absorption Curve ......................................................................................................7

Figure 3–4 HD-500-1 Power Absorption Curve ........................................................................................................7

Figure 3–5 HD-600-1 Power Absorption Curve .........................................................................................................8

Figure 3–6 HD-700-1 Power Absorption Curve .........................................................................................................8

Figure 3–7 HD-705-1 Power Absorption Curve .........................................................................................................9

Figure 3–8 Examples of Possible Shaft Misalignment ..............................................................................................10

Figure 3–9 Hysteresis Brake Cross-Section ..............................................................................................................11

User’s Manual

TABLE OF FIGURES

4. OPERATING PRINCIPLES

Figure 4–1 Optical Encoder Circuit .........................................................................................................................13

5. CALIBRATION

Figure 5–1 Calibration Setup ...................................................................................................................................14

iii

1. Introduction

1.1 UNPACKING YOUR DIAL WEIGHT DYNAMOMETER

Your Hysteresis Dynamometer was packaged in reusable, shock resistant packing material that will
protect the instrument during normal handling.

1. Make sure the carton contains all dynamometer hardware, counter weights, applicable power
supplies, User Manual CD-Rom, and any other small items.

Note: The counter weights may be wrapped separately or installed on the

brake.

2. Inspect the contents for any evidence of damage in shipping. In the event of shipping damage,
immediately notify the carrier and Magtrol’s Customer Service Department.

Note: Save all shipping cartons and packaging material for reuse when

returning the instrument for calibration or servicing.

1.2 TECHNICAL SPECIFICATIONS

Full Scale Torque

Model

HD-106-1
HD-400-1
HD-400-2
HD-500-1
HD-600-1
HD-700-1
HD-705-1

Range One Range Two Range Three 5 Minutes Continuous

oz·in accuracy oz·in accuracy oz·in accuracy rpm W W

0.5 3.5 % 1 2 % 2 1 % 30,000 35 7
2 2 % 8 2 % 16 1 % 20,000 200 55
8 2 % 16 1 % 32 1 % 20,000 200 55

25 2 % 50 1 % 100 1 % 15,000 400 80

50 1 % 100 1 % 200 1 % 10,000 600 100
100 1 % 200 1 % 400 1 % 10,000 700 150
200 1 % 400 1 % 800 1 % 8,000 1400 300

1.2.1 Hysteresis Brake Control Power

Hysteresis brakes require direct current for torque control. They will not respond to alternating
current above a few Hz. The nominal voltage rating for all Magtrol Hysteresis Brakes is 28 VDC.
The following is a listing of the resistance and current for each brake, by dynamometer model.

Model

HD-106-1 171 0.164
HD-400-1/2 80 0.350
HD-500-1 120 0.233
HD-700-1 80 0.350
HD-705-1 40 0.700

Maximum

Speed

Resistance F.S. Current

Ω A

Power Ratings

1