HBM T22 User manual

A2302-2.0 en/de
Torque transducer
Drehmoment-Messwelle
T22
Montageanleitung
Mounting instructions

English Page 3 − 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Deutsch Seite 22 − 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Contents Page
Safety instructions 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 Application 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Installation 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1 Installation position 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Installation options 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3 Couplings 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3.1 Installation position with couplings 9. . . . . . . . . . . . . . . . .
2.3.2 Installation 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Electrical connection 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1 General instructions 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 Connector 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3 Cable extension 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4 Shielding design 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 Load-carryingcapacity 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1 Measuring dynamic torque 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2 Maximum rotation speed 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Displaying torque 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 Maintenance 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 Dimensions (in mm; 1 mm = 0.03937 inches) 14. . . . . . . . . . . . . . . . . . . . .
8 Specifications 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 Accessories 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.1 Accessories for T22 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.2 Bellows couplings 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.2.1 Dimensions bellows couplings (in mm) 20. . . . . . . . . . . . . .
9.2.2 Specifications for bellows couplings 21. . . . . . . . . . . . . . . .

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Safety instructions
Use in accordance with the regulations
The T22 torque transducer is used exclusively for torque measurement tasks
and control and adjustment tasks directly connected thereto. Use for any
additional purpose shall be deemed to be not in accordance with the
regulations.
In the interests of safety, the transducer should only be operated as described
in the Operating Manual. It is also essential to observe the appropriate legal
and safety regulations 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 in-
tended. Proper and safe operation of this transducer requires proper trans-
portation, 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 fail-safe. The
transducer can give rise to remaining dangers if it is inappropriately installed
and operated by untrained personnel.
Everyone involved with the installation, commissioning, maintenance or repair
of 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 technique. In addition, equipment planners,
installers and operators should plan, implement and respond to the safety
engineering considerations of torque measurement technique 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 potentiallydangerous situation in which failure to comply with
safety requirements can result in death or serious physical injury.
Symbol: CAUTION
Meaning: Potentially 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 pointing out notes on use and waste disposal as well as 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 confor-
mity is available at http://www.hbm.com/HBMdoc).

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Symbol:
Meaning: Statutory marking requirements for waste disposal
National and local regulations regarding the protection of the environment and
recycling of raw materials require old equipment to be separated from regular
domestic waste for disposal.
For more detailed information on disposal, please contact the 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 ex-
clude all liability on our part for any damage resulting therefrom.
Qualified personnel
The transducer must only to be installed and used by qualified personnel,
strictly in accordance with the specifications and with safety requirements and
regulations. It is also essential to observe the appropriate legal and safety
regulations for the application concerned during use. The same applies to the
use of accessories.
Qualified personnel means persons entrusted with the installation, fitting, com-
missioning and operation of the product who possess the appropriate qualifica-
tions for their function.

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Prevention of accidents
In accordance with the health and safety regulations relevant to accident
prevention, once the operator has fitted the torque transducer, a cover or
cladding must be attached as follows:
•The cover or cladding must not be free to rotate.
•The cover or cladding must prevent access to any areas where crushing or
shearing could occur, and must provide protection against any parts that
may come loose.
•Covers and cladding must be positioned at a suitable distance or so
arranged that it prevents access to any moving parts within.
•Covers and cladding must also be attached if the moving parts of the torque
transducers are installed outside the area in which people are moving about
and working.
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.

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1 Application
The T22 torque transducer measures static and dynamic torque on rotating or
stationary machine parts in any direction of rotation.
2 Installation
2.1 Installation position
Any installation position can be chosen for the torque transducer (see
Chapter 2.3.1).
2.2 Installation options
CAUTION
The permissible load limits given in the specifications (see Page 15) are mandatory.
Side A
Measuring side Side B Drive side
Fig. 2.1: Installation options with couplings

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2.3 Couplings
HBM supplies bellows couplings for installation of the torque transducer. The
couplings and the torque transducer are delivered as separate units. The
following points must be observed during installation:
•Only tighten the clamping screws of the couplings once the shafts are
installed in the coupling hubs!
•The bellows-type coupling must not be overstretched beyond the specified
permissible flexibility.
•Drive and output shafts must be without burr.
•Run the shaft diameter with j6 tolerance, to produce the H7/j6 preferred fit.
2.3.1 Installation position with couplings
With the bellows couplings, the T22 torque transducer can be operated in any
installation position (horizontal, vertical or diagonal). With vertical and diagonal
operation, make sure that additional masses are adequately supported.
2.3.2 Installation
1. Degrease the hub bore of each coupling half member and the shaft ends
with solvent (for example, acetone).
2. Push the hub onto the shaft, set the reference gap L (making use of the full
clamping length of the coupling) and align the shafts.
3. Tighten the clamping screws of the clamping element with a torque wrench
(for the required tightening torque, see Chapter 9.2.2).
CAUTION
When installing the coupling, you must not exceed the permissible
longitudinal and lateral forces or bending limit moments (see Chapter
8) of the torque transducer!
When tightening the clamping screws, hold the coupling on the
clamping element.

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3 Electrical connection
3.1 General instructions
We recommend to use shielded, low−capacitance cable from HBM for the elec-
trical connection between torque transducer and measuring amplifier.
With cable extensions it is important to ensure that a good connection is pro-
vided, with minimum contact resistance and good insulation. All plug connec-
tions or cap nuts have to be tightened firmly.
Do not route measurement cables in parallel to power lines and control circuits.
If this is not possible (for example in cable ducts), maintain a minimum dis-
tance of 50 cm and protect the cable with a steel tube.
Avoid transformers, motors, contactors, thyristor controllers and similar
sources of stray fields.
3.2 Connector
The transducer is equipped with a permanent housing connector.
It can be connected to the relevant measurement electronics by using the
transducer connection cable (accessories, see Page 19). The pin assignment
for the transducer connection cable can be found in the following table:
Pin Pin assignment Wire color
ANo function BK
BNo function RD
CMeasurement signal torque "5 V BN
GH
DTorque ground WH
F
G
J
H
M
EGround (supply) YE
A
D
E
FJ
L
M
KFSupply voltage +11.5...30 V VT
A
B
C
D
E
LGNo function GN
B
C
HNo function PK
JNo function GY
KNo function GY/PK
LMeasurement signal torque 10 "8 mA BU/RD
MCable shield BU