HBM T40 User manual

A24633.0en/de
Torque Flange
DrehmomentMessflansch
T40
Mounting instructions
Montageanleitung

English Page 3 − 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Deutsch Seite 35 − 67. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Contents Page
Safety instructions 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 Application 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Structure and mode of operation 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Mechanical installation 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1 Conditions on site 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 Mounting position 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3 Installation options 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3.1 Installation without dismantling the antenna ring 11. . . . . .
3.3.2 Installation with subsequent stator mounting 12. . . . . . . . .
3.4 Installing the rotor 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5 Installing the stator 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 Electrical connection 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1 General hints 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2 Shielding design 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3 Connector pin assignment 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.4 Supply voltage 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Shunt signal 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.1 Triggering the shunt signal 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 Settings 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.1 Output frequency settings 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.2 Functional testing 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.2.1 Rotor status LED 1 (upper LED) 23. . . . . . . . . . . . . . . . . . .
6.2.2 Stator status LED 2 (lower LED) 23. . . . . . . . . . . . . . . . . . .
7 Loading capacity 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1 Measuring dynamic torque 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8 Specifications 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 Dimensions 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.1 T40/500N@m and 1kN@m29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.2 T40/2kN@m and 3kN@m31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 Supplementary technical information 33. . . . . . . . . . . . . . . . . . . . . . . . . .
10.1 Runout and concentric tolerances 33. . . . . . . . . . . . . . . . . . . . . . . . .
11 Order numbers 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12 Accessories 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Safety instructions
Appropriate use
T40 torque flanges are used exclusively for torque, rotation speed, angle of
rotation and power measurement tasks and control and adjustment tasks
directly connected thereto. Use for any additional purpose shall be deemed to
be not as intended.
Stator operation is only permitted with an installed rotor.
In the interests of safety, the transducer should only be operated as described
in the Operating Manual. It is also essential to comply with the legal and
safety requirements for the application concerned during use. The same
applies to the use of accessories.
The transducer is not a safety element within the meaning of its use as
intended. Proper and safe operation of this transducer requires proper
transportation, correct storage, assembly and mounting and careful operation.
General dangers of failing to follow the safety instructions
The transducer corresponds to the state of the art and is failsafe. The
transducer can give rise to remaining dangers if it is inappropriately installed
and operated by untrained personnel.
Everyone involved with siting, starting up, maintaining or repairing the
transducer must have read and understood the Operating Manual and in
particular the technical safety instructions.
Remaining dangers
The scope of supply and performance of the transducer covers only a small
area of torque measurement technology. In addition, equipment planners,
installers and operators should plan, implement and respond to the safety
engineering considerations of torque measurement technology in such a way
as to minimize remaining dangers. Prevailing regulations must be complied
with at all times. Reference must be made to remaining dangers connected
with torque measurement technology.

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In this Operating Manual, remaining dangers are pointed out using the
following symbols:
Symbol: DANGER
Meaning: Maximum danger level
Warns of an imminently dangerous situation in which failure to comply with
safety requirements will result in death or serious physical injury.
Symbol: WARNING
Meaning: Dangerous situation
Warns of a potentially dangerous situation in which failure to comply with
safety requirements can result in death or serious physical injury.
Symbol: CAUTION
Meaning: Possibly dangerous situation
Warns of a potentially dangerous situation in which failure to comply with
safety requirements could result in damage to property or some form of
physical injury.
Symbols for application instructions and useful information:
Symbol: NOTE
Means that important information about the product or its handling is being
given.
Symbol:
Meaning: CE mark
The CE mark enables the manufacturer to guarantee that the product
complies with the requirements of the relevant EC directives (the Declaration
of Conformity can be found at http://www.hbm.com/HBMdoc).

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Symbol:
Meaning: Statutory waste disposal mark
In accordance with national and local environmental protection and material
recovery and recycling regulations, old devices that can no longer be used
must be disposed of separately and not with normal household garbage.
If you need more information about waste disposal, please contact your local
authorities or the dealer from whom you purchased the product.
Conversions and modifications
The transducer must not be modified from the design or safety engineering
point of view except with our express agreement. Any modification shall
exclude all liability on our part for any damage resulting therefrom.
Qualified personnel
The transducer must only be installed and used by qualified personnel, strictly
in accordance with the specifications and with safety requirements and
regulations. It is also essential to comply with the legal and safety
requirements for the application concerned during use. The same applies to
the use of accessories.
Qualified personnel means persons entrusted with siting, mounting, starting
up and operating the product who possess the appropriate qualifications for
their function.
Accident prevention
According to the prevailing accident prevention regulations, once the torque
transducers have been mounted, a covering agent or cladding has to be fitted
as follows:
•The cover or cladding must not be free to rotate.
•The cover or cladding should avoid squeezing or shearing and provide
protection against parts that might come loose.
•Covers and cladding must be positioned at a suitable distance or be so
arranged that there is no access to any moving parts within.
•Covering agents and cladding must also be attached if the moving parts of
the torque transducer are installed outside peoples’ movement and
operating range.

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The only permitted exceptions to the above requirements are if the various
parts and assemblies of the machine are already fully protected by the design
of the machine or by existing safety precautions.
Warranty
Where there are complaints, a warranty can only be given if the torque
transducer is returned in its original packaging.

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1 Application
The T40 torque flange measures static and dynamic torques on stationary
and rotating shafts. Test beds can be extremely compact because of the short
construction of the measurement flange. They offer a very wide range of
applications.
The T40 torque flange is reliably protected against electromagnetic
interference. It has been tested with regard to EMC according to the relevant
European standards, and carries the CE mark.
2 Structure and mode of operation
The torque flange consist of two separate parts: the rotor and the stator. The
rotor comprises the measuring body and the signal transmission elements.
Strain gages (SGs) are mounted on the measuring body. The rotor electronics
for transmitting the bridge excitation voltage and the measurement signal are
located centrally in the flange. The transmitter coils for contactless
transmission of excitation voltage and measurement signal are located on the
measuring body’s outer circumference. The signals are sent and received by
a separable antenna ring. The antenna ring is mounted on a housing that
includes the electronic system for voltage adaptation and signal conditioning.
Connectors for the torque signal, the voltage supply and the digital output are
located on the stator. The antenna ring should be mounted concentrically
around the rotor (see Chapter 4).

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Stator housing
Rotor
Antenna segments
Type plate
Connector plugs
Connector plug
Fig.2.1: Mechanical construction
3 Mechanical installation
WARNING
Handle the torque flange carefully. The transducer might suffer
permanent damage from mechanical shock (dropping), chemical effects
(e.g. acids, solvents) or thermal effects (hot air, steam).
With alternating loads, you should cement the rotor connectionscrews
into the mating thread with a screw locking device (medium strength) to
exclude prestressing loss due to screw slackening.
An appropriate shaft flange enables the T40 torque flange to be mounted
directly. It is also possible to mount a joint shaft or relevant compensating
element directly on the rotor (using an intermediate flange when required).
Under no circumstances must the permissible limits specified for bending
moments, lateral and longitudinal forces be exceeded. Due to the T40
measurement flange’s high torsional stiffness, dynamic shaft train changes
are kept to a minimum.

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CAUTION
Check the effect on speeds and natural torsional oscillations critical to
bending, to prevent the transducer being overloaded by increases in
resonance.
NOTE
Even if the unit is installed correctly, the zero point adjustment made at
the factory can shift by up to approx.2 % of the characteristic value. If
this value is exceeded, we advise you to check the mounting conditions.
If the residual zero offset when the unit is removed is greater than 1 % of
the characteristic value, please send the transducer back to the
Darmstadt factory for testing.
For correct operation, do, in any case, comply with the mounting
dimensions.
3.1 Conditions on site
The T40 torque flange must be protected against coarse dirt particles, dust,
oil, solvents and humidity. During operation, the prevailing safety regulations
for the security of personnel must be observed (see "Safety instructions").
There is wide ranging compensation for the effects of temperature on the
output and zero signals of the T40 torque flange (see specifications).
If there are no static temperature ratios, for example, because of the
temperature differences between the measuring body and the flange, the
values given in the specifications can be exceeded. So for accurate
measurements, static temperature conditions must then be obtained by
cooling or heating depending on the application. As an alternative, check
thermal decoupling, by means of heat radiating elements such as multiple
disc couplings.
3.2 Mounting position
The transducer can be mounted in any position. With clockwise torque, the
output frequency is 60 to 90kHz (Option 5, Code SU2: 10 kHz to 15 kHz;
HU2: 240 kHz to 360 kHz). In conjunction with HBM amplifiers or when using
the voltage output, a positive output signal (0V to +10V) is present.