Burster 8625 User manual

OPERATION MANUAL
Precision torque sensor
model 8625
Manufacturer:
© 2018
burster
praezisionsmesstechnik gmbh & co kg
burster
praezisionsmesstechnik gmbh & co kg
All rights reserved
Talstr. 1 - 5
P.O. Box 1432
76593 Gernsbach
76593 Gernsbach
Germany
Germany
Valid from:
02.10.2018
Tel.: [phone]
Fax.: [phone]
Email: [e-mail]
www.burster.com
2786-BA8625EN-5170-091527

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Exclusion of warranty liability for operating manuals
All information in the present documentation was prepared and compiled with great care and reproduced
subject to effective control measures. No warranty is provided for freedom from errors. We reserve the
right to make technical changes. The present information as well as the corresponding technical data can
change without notice. Reproduction of any part of this documentation or its processing or revision using
electronic systems is prohibited without the manufacturer‘s prior written approval.
Components, devices and measured value sensors made by burster praezisionsmesstechnik (hereinafter
referred to as "product") are the results of targeted development and meticulous research. As of the date
of delivery, burster provides a warranty for the proper condition and functioning of these products
covering material and production defects for the period specified in the warranty document accompanying
the product. However, burster excludes guarantee or warranty obligations as well as any liability beyond
that for consequential damage caused by improper use of the product, in particular the implied warranty
of success in the market as well as the suitability of the product for a particular purpose. Furthermore,
burster assumes no liability for direct, indirect or incidental damages as well as consequential or other
damages arising from the provision and use of the present documentation.
Trademark information
Intel Pentium® is a registered trademark of Intel Corporation. Windows®, Excel® are registered
trademarks or trademarks of Microsoft Corporation in the United States and/or other countries.
All brand or product names mentioned in this document are trademarks or registered trade-marks of their
respective trademark owners. By mentioning these trademarks burster präzisionsmesstechnik gmbh & co
kg is not laying claim to trademarks other than its own.

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Table of contents
1Safety instructions .................................................................................................................................6
1.1 Symbols in this manual....................................................................................................................6
1.1.1 Signal words..........................................................................................................................6
1.1.2 Pictograms ............................................................................................................................6
1.2 General safety instructions ..............................................................................................................7
2Introduction.............................................................................................................................................8
2.1 Intended use ....................................................................................................................................8
2.2 Customer service .............................................................................................................................8
2.2.1 Customer service department...............................................................................................8
2.2.2 Contact person......................................................................................................................8
2.3 Environmental conditions.................................................................................................................9
2.3.1 Storage conditions ................................................................................................................9
2.3.2Cleaning ................................................................................................................................9
2.4 Personnel.........................................................................................................................................9
2.5 Scope of delivery .............................................................................................................................10
2.6 Unpacking ........................................................................................................................................10
2.7 Warranty ..........................................................................................................................................10
2.8 Conversions and modifications........................................................................................................11
3Device concept and general information .............................................................................................12
3.1 Definitions ........................................................................................................................................12
3.2 Mechanical design ...........................................................................................................................13
3.3 Electrical design...............................................................................................................................13
3.3.1 Torque sensor model 8625 with amplifier .............................................................................15
3.4 Static and quasi-static torques.........................................................................................................16
3.5 Dynamic torques ..............................................................................................................................17
3.6 Interference......................................................................................................................................18
3.7 Troubleshooting table ......................................................................................................................18
4Installation...............................................................................................................................................20
4.1 Mechanical installation.....................................................................................................................20
4.1.1 Preparing for alignment and fitting ........................................................................................21
4.1.2 Installation options ................................................................................................................22
4.2 Electrical connection ........................................................................................................................27
4.2.1 Power supply.........................................................................................................................27
4.2.2 Connector pin assignments ..................................................................................................28
4.2.3 USB pin assignment .............................................................................................................28
4.2.4 Power supply for torque sensor model 8625 fitted with USB ...............................................29
4.2.5 Power supply for torque sensor model 8625 with built-in electronics via the circular
connector..........................................................................................................................................29
4.2.6 Power supply for torque sensor model 8625 without built-in electronics..............................29
4.2.7 Cables ...................................................................................................................................30
4.2.8 Connecting the shield ...........................................................................................................30

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4.2.9 Running cables .....................................................................................................................31
4.3 Measurement...................................................................................................................................32
4.3.1 Switching on..........................................................................................................................32
4.3.2 The torque direction ..............................................................................................................32
4.3.3 Check function (for 8625 with instrumentation amplifier) .....................................................33
5Calibration and adjustment...................................................................................................................34
5.1 Factory calibration ...........................................................................................................................34
5.2 DAkkS (DKD) calibration (DIN 51309).............................................................................................34
5.3 Recalibration....................................................................................................................................34
6Taking out of use....................................................................................................................................35
7Technical data ........................................................................................................................................36
7.1 Electromagnetic compatibility ..........................................................................................................36
7.1.1 Interference immunity ...........................................................................................................36
7.1.2 Emitted interference..............................................................................................................36
8Accessories ............................................................................................................................................37
8.1 Software...........................................................................................................................................37
9Disposal...................................................................................................................................................38

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1 Safety instructions
In this manual the following symbols warn about risks.
1.1 Symbols in this manual
1.1.1 Signal words
The following signal words are used in the operation manual according to the specified hazard
classification.
DANGER
DANGER indicates a hazard with a high level of risk which, if not avoided, will result in death or serious
injury.
WARNING
WARNING indicates a hazard with a medium level of risk which, if not avoided, could result in death or
serious injury.
CAUTION
CAUTION indicates a hazard with a low level or risk which, if not avoided, could result in minor or
moderate injury.
NOTICE
Property damage to the equipment or the surroundings will result if the hazard is not avoided.
Note: It is important to heed these safety instructions in order to ensure correct handling of the torque
sensor model 8625.
IMPORTANT: Follow the information given in the operation manual.
1.1.2 Pictograms
Danger of electric shock!
Observe the safety notices for protecting the torque sensor model 8625.

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1.2 General safety instructions
The torque sensor model 8625 uses state-of-the-art engineering and is safe to operate. However, if the
torque sensor model 8625 is not used or operated as intended, it may present a hazard.
DANGER
Danger of electric shock!
The following instructions must be followed to prevent electric shock and
injuries:
•In order to achieve high measuring characteristic value, the torque
sensor model 8625 is not designed with the usual safety factors (2 …
20) for machine designs. For applicable overload factors, see the
technical data (data sheet).
•Observe accident prevention regulations, including for accessories used.
•Use torque sensor model 8625 only in non-safety-critical applications.
•Only use torque sensor model 8625 outside of potentially explosive
areas (Ex protected areas).
•The torque sensor model 8625 must not be used for medical purposes.
NOTICE
The following points must be observed to prevent injuries and damage to
property:
•The limits for permissible mechanical, thermal and electrical loads are
shown in the data sheet. These limits must not be exceeded. Take these
limits into account when planning the measuring arrangement, and
during installation (preferably with the display for the torque connected)
and operation.
•Impacts and shocks may damage the torque sensor model 8625 (e.g. if
it is dropped). Exercise the necessary care when transporting and fitting
the sensor.
•Torque peaks in excess of the permissible overload may destroy the
torsion shaft. Make sure that such peaks do not occur, or ensure that
they are absorbed.
•Avoid excessive torques, bending moments or axial loads.
•Support the torque sensor model 8625 while it is being fitted.
•When measuring dynamic torques, operating the torque sensor model
8625 close to natural resonance will result in permanent damage. The
frequency of dynamic torques must lie below the resonant frequency of
the mechanical structure.
•Limit the peak-to-peak variation of dynamic torques to 70 % of the rated
torque.

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2 Introduction
IMPORTANT: Read the operation manual carefully before using the equipment, and keep for future
reference.
2.1 Intended use
The torque sensor model 8625 measures static and dynamic torques. This measured quantity is suitable
for open-loop and closed-loop control functions. The respective upper range value is shown on the type
plate.
Both the low mass of the torque sensor model 8625 and its high torsional rigidity are an advantage when
measuring dynamic torques. However, you need to pay attention to the torsion spring constant and the
sensor’s cut-off frequency with such measurements. You can find both of these in the data sheet. For
more information on estimating the resonant frequency and measuring dynamic torques see chapter 3.5
“Dynamic torques” on page 17.
The torque sensor model 8625 is maintenance-free. The electrical measurement signals can be
transmitted to remote measuring stations where they can be displayed, recorded, processed and used for
control and regulation tasks.
Use the torque sensor model 8625 only for measuring torque and rotational speed or angular
displacement.
Do not use the torque sensor model 8625 in safety-critical applications.
The torque sensor model 8625 is not intended for use as a safety device.
2.2 Customer service
2.2.1 Customer service department
If you need to ask about repairs, please telephone our Service department on [phone].
Please have the serial number to hand. The serial number is essential to establishing the definite
technical status of the torque sensor model 8625 and providing help quickly. You will find the serial
number on the type plate of the torque sensor model 8625.
2.2.2 Contact person
If you have any questions relating to the torque sensor model 8625, please contact your representative or
go directly to burster präzisionsmesstechnik gmbh & co. kg.
Headquarters
burster praezisionsmesstechnik gmbh & co kg
Talstr. 1 - 5
76593 Gernsbach
Germany
Tel: [phone]
Fax: [phone]
Email: [e-mail]

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2.3 Environmental conditions
•Avoid radiant heat or cooling from one side.
•Protect the torque sensor model 8625 from moisture.
•The torque sensor model 8625 is not resistant to the effects of chemicals. Do not use the
torque sensor model 8625 in a corrosive environment.
•Keep the bearings and connectors free of dust, dirt and other foreign matter.
2.3.1 Storage conditions
Use clean packaging to package the torque sensor model 8625. The torque sensor model 8625 must be
stored under the following conditions:
•Dry atmosphere
•No condensation
•Dust-free
•Temperature between +0 °C and +60 °C
2.3.2 Cleaning
DANGER
Electric shock hazard!
Disconnect the torque sensor model 8625 from the electrical supply before cleaning!
Disconnect the torque sensor model 8625 from the electrical supply and use a dry cloth to clean it.
CAUTION
Do not immerse the torque sensor model 8625 in water or hold it under running water.
Do not use strong cleaning agents as these may damage the torque sensor model
8625. Use a dry cloth to clean the device.
Ensure that the shaft and mating parts are completely clean and have no traces of
lubricants at the time of fitting. Use a solvent such as acetone to clean the shafts before
fitting. Make sure there is no foreign matter on the shafts at fitting.
2.4 Personnel
Personnel must be familiar with the relevant regulations. They must follow these regulations. Only trained
personnel who are familiar with the applicable safety regulations are permitted to operate the torque
sensor model 8625.

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2.5 Scope of delivery
•Torque sensor model 8625
•Mating connector
•Operation manual
•Data sheet
•Optional: USB cable
•Optional: Montierter Flansch oder beiliegender Haltewinkel
2.6 Unpacking
DANGER
Electric shock hazard!
Never connect up the torque sensor model 8625 if it shows signs of damage incurred
in transit. Only ever use the torque sensor model 8625 under the conditions specified
in this operation manual.
Inspect the torque sensor model 8625 carefully for damage. If you suspect that the torque sensor model
8625 has been damaged during shipping, notify the delivery company within 72 hours.
The packaging should be retained for examination by a representative of the manufacturer and/or the
delivery company.
The torque sensor model 8625 must be shipped only in its original packaging or in packaging capable of
providing an equivalent degree of protection.
2.7 Warranty
burster praezisionsmesstechnik gmbh & co kg provides a manufacturer's warranty for a period of 24
months after delivery.
Any repairs required during this time will be made without charge. This does not include damage arising
from improper use.
Please note the following when sending the torque sensor model 8625 in for repair:
•If there is a problem with the torque sensor model 8625, please attach a note to the sensor
case summarizing the fault.
•Technical specifications subject to change at any time without notice. We also state
explicitly that we do not accept liability for consequential damage.
•The torque sensor model 8625 must always be dispatched in suitable packaging.