HBM T10FM User manual

A0894-5.2 en
Torque flange
T10FM
Mounting instructions

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Contents Page
Contents
Safety instructions 5..............................................
1 Scope of supply 9.............................................
2 Application 9..................................................
3 Structure and mode of operation 10..............................
4 Mechanical installation 11.......................................
4.1 Conditions on site 12........................................
4.2 Installation orientation 12....................................
4.3 Installation options 12.......................................
4.3.1 Installation without dismantling the antenna ring 13.......
4.3.2 Installation with subsequent stator mounting 14...........
4.4 Preparing for the rotor mounting 15...........................
4.5 Mounting the rotor 17.......................................
4.6 Installing the stator 20.......................................
4.7 Installing the clamp fixture 22................................
4.8 Fitting the slotted disc (speed measuring system) 24............
4.9 Aligning the stator (speed measuring system) 25................
5 Electrical connection 27.........................................
5.1 General information 27......................................
5.2 Shielding design 27.........................................
5.3 Connector pin assignment 28................................
5.4 Supply voltage 30..........................................
6 Calibration signal 31............................................
7 Settings 32.....................................................
7.1 Torque output signal 32......................................
7.2 Setting up the zero point 33..................................
7.3 Functional testing 34........................................
7.3.1 Power transmission 34................................
7.3.2 Aligning the speed module 34..........................
7.4 Setting the pulse count 35...................................
7.5 Vibration suppression (hysteresis) 36..........................
7.6 Form of speed output signal 36...............................
7.7 Type of speed output signal 38...............................
8 Loading capacity 39.............................................
8.1 Measuring dynamic torque 39................................

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9 Maintenance 41.................................................
9.1 Speed module maintenance 41...............................
10 Dimensions 42.................................................
10.1 Dimensions without speed measuring system 42................
10.2 Dimensions with speed measuring system 43..................
10.3 Mounting dimensions 44.....................................
11 Order numbers, accessories 45..................................
12 Specifications 46...............................................
13 Supplementary technical information 52..........................
13.1 Output signals 52...........................................
13.1.1 Output MD torque (connector 1) 52.....................
13.1.2 Output N Speed (connector 2) 53.......................
13.1.3 Output speed, double frequency, stat. direction of
rotation signal 54.....................................
13.2 Axial and radial run‐out tolerances 55.........................
13.3 Additional mechanical data 55................................

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Safety instructions
Designated use
The T10FM torque flange is used exclusively for torque and rotation speed
measurement tasks, and directly associated control and regulatory tasks. Use
for any additional purpose shall be deemed to be not as intended.
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 designated
use. 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 mounting, starting up, maintaining, or repairing the
transducer must have read and understood the Operating Manual and in
particular the technical safety instructions.
Residual 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. On‐site regulations must be complied with
at all times. Reference must be made to remaining dangers connected with
torque measurement technology.

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The following symbols are used in this Operating Manual to point out
remaining dangers:
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: ATTENTION
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 and disposal instructions, as well as useful
information:
Means that important information about the product or its handling is being
provided.
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.

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Accident prevention
According to the prevailing accident prevention regulations, once the torque
flange has 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
arranged so that there is no access to any moving parts within.
Covers and cladding must also be attached if the moving parts of the
torque flange are installed outside peoples' movement and operating
range.
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
In the case of complaints, a warranty can only be given if the torque flange is
returned in the original packaging.

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1 Scope of supply
Rotor
Stator
Mounting instructions
Test record
Optional: Speed kit (slotted disc, screwdriver, screw locking device,
screws)
2 Application
The T10FM torque flanges record static and dynamic torque on stationary or
rotating shafts and determine the speed, specifying the direction of rotation.
Test beds can be extremely compact because of their extremely short
construction. They therefore offer a very wide range of applications.
In addition to conventional test‐bench engineering (engine, roll and
transmission test benches), new solutions are possible for torque
measurements partly integrated in the machines.
Thanks to the bearing‐free design and the contactless transmission of
excitation voltage and measured values, the torque measuring system of
torque flanges requires no maintenance. Thus there are no friction or bearings
heating effects.
The torque flanges are supplied for nominal (rated) torques from 15 kNm to
80 kNm. Depending on the nominal torque, maximum speeds of up to 6000
min-1 are permissible.
T10FM torque flanges are reliably protected against electromagnetic
interference. They have been tested with regard to EMC according to the
relevant European standards, and carry the CE mark.

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3 Structure and mode of operation
The torque flange consist of two separate parts: the rotor and the stator. The
stator comprises an antenna ring and a housing.
Strain gauges (SGs) are mounted on the rotor. The rotor electronics for
transmitting the bridge excitation voltage and the measurement signal are
located centrally in the flange. The coils for the non‐contact transmission of
excitation voltage and measurement signal are located on the rotor'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 speed signal
(option) are located on the stator. The antenna ring should be mounted
concentrically around the rotor (see Chapter 4).
In the case of the speed measuring system option, the speed sensor is
mounted on the stator, the customer attaches the associated slotted disc on
the rotor. The optical speed measurement works on the infrared transmitted
light principle.
Stator
Antenna segments
Rotor
Housing
Speed sensor (option)
Flange B
Flange A
Fig.3.1: Mechanical structure, exploded view

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4 Mechanical installation
WARNING
Handle the torque flange carefully! The transducer could 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 connection screws
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 T10FM torque flanges to be mounted
directly. It is also possible to directly mount a joint shaft or relevant
compensating element (see Fig.3.1) on flange B of 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 T10FM torque flanges' high torsional
stiffness, dynamic changes on the shaft train are minimized.
IMPORTANT
The effect on critical bending speeds and natural torsional vibrations
must be checked to avoid overloading the measurement flanges due to
the resonance stepup.
NOTE
For correct operation, comply with the mounting dimensions (see Page
44).

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4.1 Conditions on site
T10FM torque flanges are protected to IP54 according to EN 60529. They
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 T10FM torque flange (see Specifications on
Page 46). This compensation is carried out at static temperatures in extensive
furnace processes. This guarantees that the circumstances can be
reproduced and the properties of the transducer can be reconstructed at any
time.
If there are no static temperature ratios, for example, because of the
temperature differences between flange A and flange B, 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 multi‐disc couplings.
4.2 Installation orientation
The measurement flange can be mounted in any position. With clockwise
torque, the output frequency is 10 ... 15 kHz. In conjunction with HBM
amplifiers or when using the voltage output, a positive output signal (0 V to
+10 V) is present.
In the case of the speed measuring system, an arrow is attached to the head
of the sensor to clearly define the direction of rotation. If the measurement
flange turns in the direction of the arrow, connected HBM amplifiers deliver a
positive output signal (0 V...+10 V).
4.3 Installation options
In principle, there are two possibilities for torque flange mounting: with the
antenna ring complete or dismantled. We recommend mounting as described
in Chapter 4.3.1 . If installation in accordance with 4.3.1 is not possible, (e.g.
in the case of subsequent stator replacement or mounting with a speed
measuring system), you will have to dismantle the antenna ring. It is essential
in this case to comply with the notes on assembling the antenna segments
(see “Mounting the stator" and “Mounting the slotted disc").

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4.3.1 Installation without dismantling the antenna ring
1. Install rotor 2. Install stator
3. Finish installation of shaft train
Customer
mounting
Support supplied
by customer
Clamp fixture
4. Mount the clamp fixture where
re
q
uired

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4.3.2 Installation with subsequent stator mounting
1. Install rotor 2. Install shaft train
3. Remove one antenna segment
5. Align stator and finish installation
Customer
stator mounting
4. Install antenna segment around
shaft train
6. Mount the clamp fixture where
re
q
uired
Support supplied
by customer
Clamp fixture

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4.4 Preparing for the rotor mounting
IMPORTANT
The rotor is very heavy (depending on measuring range: 26 kg ... 60 kg)!
Use a crane or other suitable lifting equipment to lift it out of its
packaging and install it.
Two eye bolts are screwed into the rotor as transport and mounting aids.
Hook the lifting equipment to these eye bolts as this ensures that the rotor is
lifted horizontally out of the packaging (see Fig. 4.1).
IMPORTANT
Transport and mounting eye bolts must be removed after mounting is
complete! Keep them safe for later use.
Transport and mounting eye bolts
Fig. 4.1: Transport and mounting eye bolts on the rotor

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1. Lift the rotor out of the packaging, rotate horizontally by 10_, so that flange
B is pointing upwards (see Fig. 4.2).
Flange B
Fig. 4.2: Rotating the rotor
2. Place the rotor carefully onto a clean and stable table.
3. If the rotor is to be installed horizontally (as shown in Fig. 4.3), remove a
mounting eye bolt. Both mounting eye bolts can initially remain in the
flange for vertical installation.
4. Clean the plane surfaces of the measurement flange and the counter
flange. For safe torque transfer, the surfaces must be clean and free from
grease. Use a piece of cloth or paper soaked in solvent. Make sure that no
solvent drips into the inside of the flange and that the transmitter coils are
not damaged during cleaning.
5. Fasten the lifting equipment to the mounting eye bolt(s), carefully lift up the
rotor and move it to the mounting position (see Fig. 4.3).

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Fig. 4.3: Rotor installation (horizontal)
4.5 Mounting the rotor
IMPORTANT
For correct operation, comply with the mounting dimensions
(particularly the area free of metal, see Page 44).
Additional installation notes for the speed measuring system can be found in
Chapter 4.8, Page 24.
NOTE
Usually the rotor identification plate is no longer visible after
installation. This is why we include with the rotor additional stickers
with the important ratings, which you can attach to the stator or any
other relevant test‐bench components. You can then refer to them
whenever there is anything you wish to know, such as the calibration
signal.

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Fastening screws (10.9); note maximum
screw‐in depth Y!
Hexagon socket screw (Z)
DIN EN ISO 4762 (10.9)
Flange A
Fig. 4.4: Screwed rotor joint
1. For the connection of flange A (see Fig. 4.4), use DIN EN ISO 4762
property class 10.9 hexagon socket screws of a suitable length
(dependent on the connection geometry, see Table 4.1).
We recommend fillisterhead screws DIN EN ISO 4762, blackened,
smooth‐headed, permitted size and shape variance as per DIN ISO 4759,
Part 1, product class A.
WARNING
With alternating load: Use a screw locking device (e.g. LOCTITE no. 242)
to glue the screws into the counter thread to exclude prestressing loss
due to screw slackening.
2. Fasten all screws with the specified torque (Table 4.1).
3. Now remove the ring bolts and mounting ring(s).

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4. There are relevant tapped holes on flange B for continuing the shaft run
mounting. Again use screws of property class 10.9 and tighten them with
the prescribed torque, as specified in Table 4.1.
IMPORTANT
With alternating loads, use a screw locking device to cement the
connecting screws into place! Guard against contamination from
varnish fragments.
The maximum screw‐in depth as per Table 4.1 must be complied with!
Otherwise, significant measurement errors may result from torque
shunts or the transducer may be damaged.
Measuring
range
(NVm)
Fastening
screws (Z)1)
Fastening screws
Property class
Maximum screw‐in
depth (Y) of screws in
flange B
(mm)
Prescribed
tightening torque
(NVm)
15
20
25
10.9
30
40
45
M20 40 560
50
60
70
80
M22 45 760
Table 4.1: Fastening screws
1)DIN EN ISO 4762; black/oiled/mtot=0.125

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4.6 Installing the stator
On delivery, the stator has already been installed and is ready for operation.
The antenna segments can be separated from the stator, for example, for
maintenance or to facilitate stator mounting. To stop you modifying the center
alignment of the segment rings opposite the base of the stator, we
recommend that you separate only one antenna segment from the stator.
If your application does not require the stator to be dismantled, proceed as
described in points 2., 6., 7. and 8.
Version with speed measuring system
NOTE
Check the screw connections of the antenna segments (see Fig. 4.5) both
after initial installation and then at regular intervals for correct fit and tighten
them if necessary.
As the speed sensor includes the slotted disc, it is not possible to move the
stator axially over the pre‐assembled rotor. In this case, you should also
comply with Chapter 4.8.
Fan‐type lock washer
Fig. 4.5: Screw fittings of the antenna segments