Hottinger Baldwin Messtechnik T12S8 User Manual
Mounting Instructions
T12CV-S8
MPZ1808023
Digital torque transducer
English
Hottinger Baldwin Messtechnik GmbH
Im Tiefen See 45
D-64293 Darmstadt
Tel. +49 6151 803-0
Fax +49 6151 803-9100
info@hbm.com
www.hbm.com
Mat.: 7-2002.4515
DVS: A04515_03_E00_00 HBM: public
08.2018
© Hottinger Baldwin Messtechnik GmbH.
Subject to modifications.
All product descriptions are for general information only.
They are not to be understood as a guarantee of quality or
durability.
Safety instructions
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1
Safety instructions
.......................................................................... 5
2
Markings used
............................................................................... 11
2.1
Symbols attached to the transducer and/or stator
................. 11
2.2
The markings used in this document
.......................................... 12
3
Scope of supply
............................................................................. 13
4
Operation
...................................................................................... 14
5
Application
................................................................................... 15
6
Signal flow
.................................................................................... 16
7
Structure and mode of operation
................................................. 18
8
Mechanical installation
................................................................ 20
8.1
Important precautions during installation
............................... 20
8.2
Conditions on site
......................................................................... 21
8.3
Mounting position
........................................................................ 21
8.4
Installing the rotor
........................................................................ 22
8.5
Installing the stator
....................................................................... 26
9
LED status display
......................................................................... 33
9.1
Measuring mode operation
......................................................... 33
9.2
Rotor clearance setting mode operation
................................... 34
10
Electrical connection
.................................................................... 35
10.1
General information
...................................................................... 35
10.2
Shielding design
............................................................................. 37
10.3
Pin assignment
............................................................................... 39
10.4
Supply voltage
................................................................................ 44
11
Shunt signal
.................................................................................. 46
12
Load-carrying capacity
................................................................. 47
13 TEDS .............................................................................................. 49
14
T12-Assistent, Version 1.2
............................................................. 59
Safety instructions
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15
Maintenance
................................................................................. 71
16
Waste disposal and environmental protection
............................. 84
17
Specifications
............................................................................... 85
17.1
Nominal (rated) torque 20 kN·m
.................................................. 85
18
Dimensions
................................................................................ 109
19
Supplementary technical information
........................................ 110
20
Condition at the time of delivery
................................................ 111
21
Accessories
................................................................................. 118
22
Dimensions
................................................................................ 120
Safety instructions
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1
Safety instructions
Adherence to FCC Rules and warning notice
Important
Every variation or modification that is not explicitly agreed with the person re-
sponsible for adherence to the Rules, could invalidate the user’s operating li
cense for the device. If additional components or accessories are defined elsewhere for use during installation of the product, these additional components or
accessories must be used, to ensure adherence to FCC Rules.
This device complies with Part 15 of the FCC regulations. Compliance with the
following two conditions is a requirement of operation: (1) This device may not
cause harmful interference; and (2) this device must tolerate any interference
signal received, including interference that could cause undesirable operation.
The FCC identification number or the unique identification number, as appropriate in each case, must be attached to the device where it is clearly visible.
Model
Measurement
range
FCC ID
IC
T12CV-S8
20kN·m
2ADAT-T12S8
12438A-T12S8
The FCC ID number in relation to the measurement range.
Safety instructions
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Fig. 1.1 Position of the label on the device stator
Fig. 1.2 Example of a label with FCC ID and IC number
Model: T12CV-S8
FCC ID: 2ADAT-T12S8
IC: 12438A-T12S8
This device complies with part 15 of the FCC Rules. Operation is
subject to the following two conditions: (1) This device may not
cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause
undesired operation.
Safety instructions
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Approval from Industry Canada (IC)
This device complies with the Industry Canada standard RSS210.
This device complies with the RSS requirement(s) of Industry Canada for ex-
emption from licensing regulations. Compliance with the following two conditions is a requirement of operation: (1) This device may not cause harmful interference; and (2) this device must tolerate any interference signal, including
interference that could cause undesirable operation of the device.
Cet appareil est conforme aux norme RSS210 d’Industrie Canada.
Cet appareil est conforme aux normes d’exemption de licence RSS d’Industry Canada.
Son fonctionnement est soumis aux deux conditions suivantes : (1) cet appareil ne doit
pas causer d’interférence et (2) cet appareil doit accepter toute interférence,
notamment les interférences qui peuvent affecter son fonctionnement.
Intended use
The T12HP torque flange is used exclusively for torque, angle of rotation and
power measurement tasks within the load limits stipulated in the specifications.
Any other use is not appropriate.
Stator operation is only permitted when the rotor is installed.
The torque flange may only be installed by qualified personnel in compliance
with the specifications and with the safety requirements and regulations of
these mounting instructions. It is also essential to observe the applicable legal
and safety regulations for the application concerned. The same applies to the
use of accessories.
The torque flange is not intended for use as a safety component. Please also
refer to the "Additional safety precautions" section. Proper and safe operation
requires proper transportation, correct storage, siting and mounting, and
careful operation.
Safety instructions
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Load-carrying capacity limits
The data in the technical data sheets must be complied with when using the
torque flange. The respective specified maximum loads in particular must
never be exceeded. For example, the values stated in the specifications must
not be exceeded for
•
Limit torque,
•
Longitudinal limit force, lateral limit force or bending limit moment,
•
Torque oscillation width,
•
Breaking torque,
•
Temperature limits,
•
Limits of the electrical load-carrying capacity.
Use as a machine element
The torque flange can be used as a machine element. When used in this manner, it must be noted that, to favor greater sensitivity, the transducer is not designed with the safety factors usual in mechanical engineering. Please refer
here to the section "Load-carrying capacity limits", and to the specifications.
Accident prevention
According to the prevailing accident prevention regulations, once the transducers have been mounted, a covering agent or cladding has to be fitted as follows:
•
The covering agent or cladding must not be free to rotate.
•
The covering agent or cladding should prevent squeezing or shearing and
provide protection against parts that might come loose.
•
Covering agents 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 still be attached even if the moving
parts of the torque flange are installed outside peoples' movement and
working range.
The only permitted exceptions to the above requirements are if the torque
flange is already fully protected by the design of the machine or by existing
safeguards.
Safety instructions
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Additional safety precautions
The torque flange cannot (as a passive transducer) implement any (safety-relevant) cutoffs. This requires additional components and constructive measures,
for which the installer and operator of the plant is responsible. The electronics
conditioning the measurement signal should be designed so that measurement
signal failure does not subsequently cause damage.
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 safety engineering considerations in such a way as to minimize residual dangers. Pertinent
national and local regulations must be complied with.
General dangers of failing to follow the safety instructions
The torque flange corresponds to the state of the art and is failsafe. Transducers can give rise to residual dangers if they are incorrectly operated or inappropriately mounted, installed and operated by untrained personnel.
Every person involved with siting, starting-up, operating or repairing a torque
flange must have read and understood the mounting instructions and in particular the technical safety instructions.
The transducers can be damaged or destroyed by non-designated use of the
transducer or by non-compliance with the mounting and operating instructions,
these safety instructions or any other applicable safety regulations (BG safety
and accident prevention regulations) when using the transducers. Transducers
can break, particularly in the case of overloading. The breakage of a transducer can also cause damage to property or injury to persons in the vicinity of
the transducer.
If the torque flange is not used according to the designated use, or if the safety
instructions or specifications in the mounting and operating instructions are ignored, it is also possible that the transducer may fail or malfunction, with the
result that persons or property may be affected (due to the torques acting on or
being monitored by the torque flange).
Safety instructions
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Conversions and modifications
The design or safety engineering of the sensor must not be modified without
our express permission. Any modification shall exclude all liability on our
part for any damage resulting therefrom.
Selling on
If the torque flange is sold on, these mounting instructions must be included
with the torque flange.
Qualified personnel
Qualified personnel are persons entrusted with the setup, mounting, startup
and operation of the product, who have the appropriate qualifications for their
function.
This includes people who meet at least one of the three following requirements:
1. Knowledge of the safety concepts of automation technology is a requirement and as project personnel, you must be familiar with these concepts.
2. As automation plant operating personnel, you have been instructed how to
handle the machinery. You are familiar with the operation of the equipment
and technologies described in this documentation.
3. As commissioning engineers or service engineers, you have successfully
completed the training to repair the automation systems. You are also authorized to operate, ground and label circuits and equipment in accordance
with safety engineering standards.
Markings used
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2
Markings used
2.1
Symbols attached to the transducer and/or stator
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).
Example of a label
Example of a label with model number, FCC ID and IC
number. The label is attached to the device stator.
Statutory waste disposal mark
The electrical and electronic devices that bear this symbol are subject to the European waste electrical and electronic equipment directive 2002/96/EC. The symbol indicates that, 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, see also Chapter 16, page 84.
Model: T12S3
FCC ID: 2ADA T-T12S3
IC: 12438A-T12S3
This device complies with part 15 of the
FCC Rules. Operation is subject to the
following two conditions: (1) This device
may not cause harmful interference, and
(2) this device must accept any
interference received, including
interference that may cause undesired
operation.
Markings used
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2.2
The markings used in this document
Important instructions for your safety are specifically identified. It is essential to
follow these instructions in order to prevent accidents and damage to property.
Symbol
Significance
This marking warns of a potentially dangerous situa-
WARNING
CAUTION
Important
Tip
Information
Emphasis
See….
tion in which failure to comply with safety requirements can result in death or serious physical injury.
This marking warns of a potentially dangerous situa-
tion in which failure to comply with safety requirements can result in slight or moderate physical injury.
This marking draws your attention to a situation in
which failure to comply with safety requirements can
lead to damage to property.
This marking draws your attention to important infor-
mation about the product or about handling the product.
This marking indicates tips for use or other information that is useful to you.
This marking draws your attention to information
about the product or about handling the product.
Important text passages and references to other
chapters and external documents are highlighted in
italics.
Notice
Scope of supply
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3
Scope of supply
•
Digital torque transducer (rotor and stator)
•
Mounting instructions
•
T12 system CD
•
Mounting kit
•
Test report
•
EMI filter/toroidal strip-wound core
•
Covers incl. fixation screws
Operation
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4
Operation
The supplied T12 system CD contains the "T12 Assistant" control software.
You can use this software to:
•
check the correct installation of the torque transducer
•
adjust the signal conditioning (zero balance, filters, scaling)
•
protect your settings or load the factory settings
•
realize and analyze measured values
Instructions for installing the T12 Assistant on your PC can be found in the
“T12 Assistant control software” Quick Start Guide (pdf file on the T12 system
CD and part of the “Setup Toolkit for T12” accessory). The current
documentation can be found on the HBM website.
Operating instructions for the T12 Assistant can be found in the program's
online Help, which is called with function key F1 or via the menu bar.
Instructions for connecting to fieldbus systems can be found in the “T12 CAN
bus/PROFIBUS” operating manual (pdf file on the T12 system CD). The current documentation can be found on the HBM website.
Application
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5
Application
The T12HP digital torque transducer records static and dynamic torque at
stationary or rotating shafts, determines the rotational speed and angle of
rotation, including indicating the direction of rotation, and calculates the power.
It is designed for:
•
highly dynamic torque measurements when testing the power and functionality of engines and sets
•
high-resolution speed and angle of rotation measurements
•
fast, dynamic power measurements on engine and transmission test rigs
and roll test stands
Designed to work without bearings and with contactless digital signal
transmission, the torque measuring system is maintenance-free.
The torque transducer is supplied for nominal (rated) torque of 20kNm.
Maximum rotational speed up to 6,000rpm is permissible.
The T12HP torque transducer is reliably protected against electromagnetic interference. It is checked in accordance with harmonized European standards
and/or complies with US and Canadian standards. The product carries the CE
mark and the FCC label.
Signal flow
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6
Signal flow
Fig. 6.1 Signal flow diagram
The torque and the temperature signal are already digitized in the rotor and
transmission is noise-free.
The torque signal can be zeroed , scaled (2-point scaling)
and filtered via two low passes (LP1 and LP2). Further scaling of the
frequency output and the analog output is then possible.
Important
Scaling at position (see Fig. 6.1) changes the internal calibration of the
torque transducer.
The rotational speed signal can be filtered and also scaled for the analog
output.
The angle of rotation signal, the power signal (low-pass filter LP) and the
temperature signal are only available on the fieldbuses.
Signal flow
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The torque signal and the rotational speed signal can be filtered via two low
passes connected in series, with the filter outputs also being available
separately.
The scaled, unfiltered torque signal is used to calculate the power. The
resultant, highly-dynamically calculated power signal is filtered via a further low
pass.
For settings over 100 Hz (torque low-pass filter 1 only), phase delay
compensation is run for the angle of rotation signal. This ensures that torque
and angle of rotation values that are measured simultaneously are also output
simultaneously.
Two pulse series offset by 90 are available as RS-422-compatible signals for
rotational speed and angle of rotation.
Structure and mode of operation
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7
Structure and mode of operation
The torque transducer comprises two separate parts: the rotor and the stator.
Strain gages (SG) to determine the torque are installed on the rotor. Carrier
frequency technology (19.2 kHz carrier frequency) is used for the strain gage
analysis. The rotor temperature is measured at two measuring points and
averaged.
The electronics for transmitting the bridge excitation voltage and the
measurement signal are located centrally in the rotor. The coils for contactless
transmission of the excitation voltage and measurement signal are located on
the outer circumference of side A of the rotor. The signals are sent and
received by the transmitter head. The transmitter head is mounted on the
stator, which houses the electronics for voltage adaptation and signal
conditioning.
Connector plugs for the inputs and outputs are located on the stator (see
Section 10.3 for the pin assignment). The transmitter head encloses the rotor
over a segment of approx. 120 and should be mounted concentrically around
the rotor (see Chapter 8).
In the case of the rotational speed measuring system option, the speed sensor
is mounted on the stator, the customer attaches the associated slotted disc to
the rotor. The optical rotational speed measurement works on the infrared
transmitted light principle.
Structure and mode of operation
T12HP A04515_03_E00_00 HBM: public 19
Fig. 7.1 Mechanical structure, exploded view
Mechanical installation
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8
Mechanical installation
8.1
Important precautions during installation
A torque flange is a precision measurement element and therefore needs careful handling. Dropping or knocking the transducer may cause permanent damage. Make sure that the transducer cannot be overloaded, including while it is
being mounted.
•
Handle the transducer with care.
•
Check the effect of bending moments, critical rotational speeds and natural
torsional vibrations, to prevent the transducer being overloaded by resonance sharpness.
•
Make sure that the transducer cannot be overloaded.
There is a danger of the transducer breaking if it is overloaded. This can cause
danger for the operating personnel of the system in which the transducer is
installed.
Implement appropriate safety measures to avoid overloads and to protect
against resulting dangers.
•
Use a threadlocker (medium strength, e.g. LOCTITE) to glue the screws
into the counter thread to exclude prestressing loss due to screw slackening, in the event of alternating loads.
•
Comply with the mounting dimensions to enable correct operation.
An appropriate shaft flange enables the T12HP 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
WARNING
Notice
Mechanical installation
T12HP A04515_03_E00_00 HBM: public 21
no circumstances should the allowed limits specified for bending moments, lateral and axial forces be exceeded. Due to the T12HP torque flange's high torsional stiffness, dynamic shaft train changes are kept to a minimum.
Important
Even if the unit is installed correctly, the zero point adjustment made at the factory can shift by up to approx. 3% of the characteristic value. If this value is
exceeded, we advise you to check the mounting conditions. If the residual zero
drift when the unit is removed is greater than 1% of the rated output, please
send the transducer back to the Darmstadt factory for testing.
8.2
Conditions on site
The T12HP torque transducer is protected to IP54 according to EN 60529.
Protect the transducer from coarse dirt, dust, oil, solvents and moisture. During
operation, the prev“ailing safety regula”tions 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 T12HP torque transducer (see specifications on
page 85). This compensation is carried out at static temperatures. 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. Then for accurate measurements, you must ensure
static temperature ratios 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.
8.3
Mounting position
The transducer can be mounted in any position. With clockwise torque, the
output frequency is 10 to 15 kHz (Option 5, code DF1/DU2: 60 kHz to 90 kHz).
In conjunction with HBM amplifiers or when using the voltage output, a positive
output signal (0 V to +10 V) is present.
Mechanical installation
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With counterclockwise torque, the output frequency is 5 to 10 kHz (Option 5,
code DF1/DU2: 30 kHz to 60 kHz).
In the case of the rotational speed measuring system, an arrow is attached to
the head of the sensor to clearly define the direction of rotation. When the
transducer rotates in the direction of the arrow, a positive rotational speed signal is output.
8.4
Installing the rotor
Tip
Usually the rotor type plate is no longer visible after installation. This is why we
include with the rotor additional stickers with the important characteristics,
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 shunt signal. To explicitly assign the data, the identification
number and the size are engraved on the rotor flange, where they can be seen
from outside.
Make sure during installation that you do not damage the measuring zone
marked in Fig. 8.2 by using it to support tools or knocking tools against it when
tightening screws, for example. This can damage the transducer and produce
measurement errors, or even destroy the transducer.
Notice
Mechanical installation
T12HP A04515_03_E00_00 HBM: public 23
Fig. 8.2 Screw connections, flange B
1. Prior to installation, clean the plane faces of the transducer 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. When cleaning, make sure
that you do not damage the transmitter coils.
2. For the flange B screw connections, use hexagon socket screws DIN EN
ISO 4762 of property class 10.9 (measurement ranges 3 kN·m to 10 kN·m:
12.9) of the appropriate length (depending on the connection geometry, see
Tab. 8.1).
We recommend DIN EN ISO 4762 socket head cap screws, blackened,
smooth-headed, permitted size and shape variance as per DIN ISO 4759,
Part 1, product class A.
3. First tighten all the screws crosswise with 80% of the prescribed tightening
torque (Tab. 8.1), then tighten again crosswise with the full tightening
torque.
Mechanical installation
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4. There are relevant tapped holes on flange A for continuing the shaft train
mounting. Again use screws of property class 10.9 (measurement ranges
3 kNm to 10 kN·m: 12.9) and tighten them with the prescribed torque, as
specified in Tab. 8.1.
Fig. 8.3 Screw connections, flange A
Important
Use a threadlocker (medium strength, e.g. LOCTITE) to glue the screws into
the counter thread to exclude prestressing loss due to screw slackening, in the
event of alternating loads.
Mechanical installation
T12HP A04515_03_E00_00 HBM: public 25
Comply with the minimum thread reach as perTab. 8.1 .
The maximum thread reach must be selected so that the counter flange is not
touched. Otherwise significant measurement errors may result from a torque
shunt, or the transducer may be damaged.
Measurement
range
kN·m
Fastening screws
Prescribed tight-
ening moment
N·m
Minimum thread
reach
mm
Z
1)
Property class
20
M20
12.9
715
1,2 x d
(2)
1)
DIN EN ISO 4762; black/oiled/µ
tot
= 0.125
2)
d = screw diameter in mm
Tab. 8.1 Fastening screws
Important
Dry screw connections can result in different and higher coefficients of friction
(see VDI 2230, for example). This means a change to the required tightening
torques.
The required tightening torques can also change if you use screws with a surface or property class other than that specified in Tab. 8.1, as this affects the
coefficient of friction.
Notice
Mechanical installation
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8.5
Installing the stator
On delivery, the stator has already been installed and is ready for operation.
There are four tapped holes on the base of the stator housing for mounting the
stator. Externally, two with a metric M6 thread, internally, two with a UNF 1/4"
thread (closed with a plastic threaded pin).
For mounting with a metric thread, we recommend using two DIN EN ISO 4762
socket head cap screws with hexagon sockets of property class 10.9 of the
appropriate length (depending on the connection geometry – not included
among the items supplied; tightening torque = 14 N·m).
Tip
Allow for possible adjustment when aligning the stator to the rotor (e.g. provide
slotted holes).
The stator can be mounted radially in any position (for example, "upside down"
installation is possible). You can also install the stator over the protection
against contact (option), see Section 8.6.3.
Fig. 8.12 Mounting holes in the stator housing (viewed from below)
Mechanical installation
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We always recommend supporting the stator of the T12HP torque transducer
to hold it in place. Fig. 8.13 shows as an example the mounting of an angle
bracket, without protection against contact.
Fig. 8.13 Supporting the stator without protection against contact
An additional mounting element is only required for
the 5 kNm and 10 kNm measurement range.
Mechanical installation
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8.5.1
Preparing with the mounting kit (incl. among the items supplied)
The supplied mounting kit contains self-adhesive spacers, to make it easier for
you to align the stator to the rotor.
Use the spacers to align the rotor and the stator radially and axially.
Fig. 8.15 Mounting kit spacer
Remove the protective film
Mechanical installation
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Radial alignment with spacers
The spacers should preferably be attached to the transmitter head offset by
90, as shown in Fig. 8.16. If your stator is equipped with a rotational speed
measuring system, you must either shorten the spacer to an appropriate length
or attach it next to the rotational speed measuring system, slightly offset.
Fig. 8.16 Radial position of the spacers
90
Spacers
Mechanical installation
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Axial alignment with spacers
The red line on the spacers is used for axial alignment. Align the spacer in
such a way that the outer edge of the transmitter head is in line with the red
line (see Fig. 8.17).
Fig. 8.17 Axial position of the spacers
Now remove the protective film and attach the spacers to the transmitter head,
as described.
Important
Remove the spacers after installation.
Outer edge of
transmitter head
Red line
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