HBM T40B Mounting Instructions
Mounting Instructions
Montageanleitung
Torque flange
Drehmoment‐Messflansch
T40B
A3452-5.0 en/de
English Page 3 - 43.................................................
Deutsch Seite 45 - 85...............................................
Dimensions/Abmessungen Page/Seite 87 - 1 16......................
T40B
3
Contents Page
English
Safety instructions 5..............................................
1 Markings used 8...............................................
1.1 Symbols on the transducer 8................................
1.2 The markings used in this document 8........................
2 Application 9..................................................
3 Structure and mode of operation 10..............................
4 Mechanical installation 13.......................................
4.1 Important precautions during installation 13....................
4.2 Conditions on site 14........................................
4.3 Installation orientation 14....................................
4.4 Installation options 14.......................................
4.4.1 Installation without dismantling the antenna ring 15........
4.4.2 Installation with subsequent stator mounting 16...........
4.5 Mounting the rotor 17.......................................
4.6 Installing the stator 19.......................................
4.7 Rotational speed measuring system, reference signal (optional) 24
5 Electrical connection 26.........................................
5.1 General information 26......................................
5.2 EMC protection 26..........................................
5.3 Connector pin assignment 27................................
5.4 Supply voltage 30..........................................
6 Shunt signal 31.................................................
7 Functional testing 32............................................
7.1 Rotor status, LED A (upper LED) 32..........................
7.2 Stator status, LED B (lower LED) 33..........................
8 Load‐carrying capacity 34.......................................
9 Maintenance 35.................................................
10 Waste disposal and environmental protection 35..................
11 Ordering numbers, accessories 36...............................
12 Specifications 37...............................................
13 Supplementary technical information 44..........................
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4
T40B
Safety instructions
Appropriate use
The T40B 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 the designated use.
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 section: “Additional safety precautions". Proper and safe operation
requires proper transportation, correct storage, siting and mounting, and careful operation.
Load‐carrying capacity limits
The data in the technical data sheets must be complied with when using the
torque flange. In particular, the respective maximum loads specified must
never be exceeded. The values stated in the specificationsmust not be
exceeded, for example, for
limit torque,
longitudinal limit force, lateral limit force or limit bending moment,
torque oscillation width,
breaking torque,
temperature limits,
the 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.
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T40B
5
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 people's 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
safety precautions.
Additional safety precautions
The torque flange cannot (as a passive transducer) implement any (safety‐rel
evant) cutoffs. This requires additional components and constructive measures for which the installer and operator of the plant is responsible. The layout
of the electronics conditioning the measurement signal should be such that
measurement signal failure does not 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 fail‐safe. 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 adversely affected (due to the
torques acting on or being monitored by the torque flange).
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T40B
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.
Selling on
If the torque flange is sold on, these mounting instructions must be included
with the torque flange.
Qualified personnel
Qualified personnel means persons entrusted with siting, mounting, starting‐
up and operating the product, who possess the appropriate qualifications for
their function.
This includes people who meet at least one of the three following requirements:
- Knowledge of the safety concepts of automation technology is a requirement and as project personnel, you must be familiar with these concepts.
- 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.
- As system startup engineers or service engineers, you have successfully
completed the training to qualify you to repair the automation systems. You
are also authorized to activate, ground and label circuits and equipment in
accordance with safety engineering standards.
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T40B
1 Markings used
1.1 Symbols on the transducer
Symbol:
Meaning: Read and note the data in this manual
7
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 on the HBM website at www.hbm.com under
HBMdoc).
1.2 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 situation in which failure to
comply with safety requirements can result
in death or serious physical injury.
This marking warns of a potentially
CAUTION
NOTE
Important
Tip
A3452-5.0 en/de HBM
dangerous situation 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 information about the product or
about handling the product.
This marking indicates application tips or
other information that is useful to you.
8
SignificanceSymbol
This marking draws your attention to
information about the product or about
handling the product.
Emphasis Italics are used to emphasize and highlight
texts.
T40B
2 Application
The T40B 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 transducer. This offers a very wide range of applications.
The T40B 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.
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T40B
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3 Structure and mode of operation
The torque flange consists of two separate parts: the rotor and the stator. The
rotor comprises the measuring body and the signal transmission elements.
Strain gauges (SGs) are installed 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 contains the electronics for voltage adaptation and the signal conditioning.
Connector plugs for the torque and speed signals, the voltage supply and
digital output, are located on the stator. The antenna segments (ring) should
be mounted more or less concentrically around the rotor (see chapter 4).
Connector plugs
Antenna segments
Rotor
Connector plugs
Stator housing
Type plate
Fig. 3.1: Mechanical construction without a rotational speed measuring system
The speed sensor is mounted on the stator in Option 6 with a rotational speed
measuring system. The rotational speed is measured magnetically via an
AMR sensor and a magnetic ring. The magnetic ring for measurement of rotational speed is welded to the flange.
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Antenna segments
Magnetic ring for measuring
rotational speed
Sensor head for measuring
rotational speed
Connector plugs
T40B
Rotor
Connector plugs
Stator housing
Type plate
Fig. 3.2: Mechanical construction with a rotational speed measuring system
In the version with a rotational speed measuring system, the transducer can
also be fitted with a sensor head for a reference signal (zero index) for measuring the angle of rotation. The magnet to be used for this is located on the
inner surface of the flange. The sensor head for sampling the reference signal
is located in the bracket above the speed sensor.
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T40B
Sensor head for measuring
rotational speed
Connector plugs
Stator housing
11
Rotor
Antenna segments
Magnetic ring for
measuring rotational
speed
Sensor head for
the reference
signal
Connector plugs
Type plate
Fig. 3.3: Mechanical construction with rotational speed measuring system and
sensor for the reference signal (zero index)
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T40B
4 Mechanical installation
4.1 Important precautions during installation
NOTE
A torque flange is a precision measuring element and therefore needs careful
handling. Dropping or knocking the transducer may cause permanent damage. Make sure that the transducer cannot be overloaded, even 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.
WARNING
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.
If alternating loads are expected, use threadlocker (medium strength, e.g.
LOCTITE No. 242) to glue the screws into the counter thread to exclude
prestressing loss due to screw slackening.
Comply with the mounting dimensions to enable correct operation.
An appropriate shaft flange enables the T40B torque flange to be mounted dir-
ectly. 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 should the permissible limits specified for bending
moments, lateral and longitudinal forces be exceeded. Due to the T40B
torque flange's high torsional stiffness, dynamic shaft train changes are kept
to a minimum.
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T40B
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Important
Even if the unit is installed correctly, the zero point adjustment made at the
factory can shift by up to approx. 2% of the sensitivity. 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 sensitivity,
please send the transducer back to the Darmstadt factory for testing.
4.2 Conditions on site
The T40B torque flange must be protected against coarse dirt particles, dust,
oil, solvents and humidity.
There is wide ranging compensation for the effects of temperature on the output and zero signals of the transducer (see “Specifications" section). 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. In this case, ensure static temperature ratios
by cooling or heating, depending on the application. As an alternative, check if
thermal decoupling is possible, e.g. by means of heat radiating elements such
as multiple disc couplings.
4.3 Installation orientation
The torque flange can be installed with any orientation.
With clockwise torque, the output frequency is 60 90 kHz for Option 5,
Code DU2 (Option 5, Code SU2: 10 15 kHz; Option HU2: 240 360kHz).
In conjunction with HBM amplifiers or when using the voltage output, a positive output signal (0 V +10 V) is present. In the case of the rotational speed
measuring system, an arrow is attached to the stator housing to clearly define
the direction of rotation. If the measurement flange turns in the direction of the
arrow, connected HBM measuring amplifiers deliver a positive output signal.
4.4 Installation options
There are basically two options for mounting the torque flange: with or without
dismantling the antenna ring. We recommend mounting as described in
Chapter 4.4.1. If mounting in accordance with Chapter 4.4.1 is not possible,
(e.g. in the case of subsequent stator replacement), 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 Chapter 4.4.2).
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4.4.1 Installation without dismantling the antenna ring
T40B
1. Install rotor
3. Finish installation of shaft run
2. Install stator
4. Mount support
Customer
Support supplied by customer
mounting
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T40B
4.4.2 Installation with subsequent stator mounting
15
1. Install rotor
Washers
Fan‐type lock
washers
3. Dismantle antenna segment
Support supplied by customer
2. Install shaft train
4. Install antenna segment
4. Mount support
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T40B
4.5 Mounting 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.
1. Prior to installation, clean the plane faces of the transducer flange and the
counter flange.
For safe torque transfer, the faces 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 winding or the rotational speed
measuring system.
Transmitter winding
Rotational speed measuring system
Without rotational speed
measuring system
Fig. 4.1: Bolted rotor connection
Flange plane faces
With rotational speed
measuring system
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T40B
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2. For the bolted rotor connection (see Fig. 4.1), use six or eight DIN EN ISO
4762 hexagon socket screws of the property class stated in Table 4.1, in a
suitable length (dependent on the connection geometry, see Table 4.1 on
page 18).
We recommend DIN EN ISO 4762 socket head cap screws, blackened,
smooth‐headed, permitted size and shape variance in accordance with DIN
ISO 4759, Part 1, product class A.
Important
If alternating loads are expected, use threadlocker (medium strength, e.g.
LOCTITE No. 242) to glue the screws into the counter thread to exclude
prestressing loss due to screw slackening.
3. Fasten all screws with the specified torque (Table 4.1 on page 18).
4. There are eight tapped holes on the rotor for the further mounting of the
shaft run. Also use screws of property class 10.9 or 12.9 and fasten them
with the torque specified in Table 4.1.
Important
If alternating loads are expected, use threadlocker (medium strength, e.g.
LOCTITE No. 242) to glue the screws into the counter thread to exclude
prestressing loss due to screw slackening.
NOTE
Comply with the maximum thread reach as per Table 4.1. Otherwise significant measurement errors may result from torque shunt, or the transducer may
be damaged.
Measuring range Fastening bolts Prescribed tightening
moment
NVm Z
200 M8
500 M10 67
1 k M10 67
2 k M12 115
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1)
Property class NVm
34
10.9
18
T40B
Measuring range Prescribed tightening
NVmNVmProperty classZ
3 k M12
5 k M14 220
10 k M16 340
Fastening bolts
moment
1)
135
12.9
Table 4.1: Fastening bolts
1)
DIN EN ISO 4762; black/oiled/m
= 0.125
tot
4.6 Installing the stator
On delivery, the stator has already been installed and is ready for operation.
The upper antenna segment can be separated from the stator, for example,
for maintenance or to facilitate stator mounting.
If your application does not require the stator to be dismantled, proceed as
described in points 2, 5, and 6.
Antenna segment bolts
with washers (M5)
Fan‐type lock washers
Hole for fixing the
antenna segment,
diameter 4.2 or
5.2mm, depending
on maximum
capacity
upper
antenna segments
lower
Stator housing
Fig. 4.2: Bolted connection of the antenna segments on the stator
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T40B
19
T40B without a rotational speed measuring system
T40B with a rotational speed measuring system
Sensor head for measuring rotational speed
Stator housing
Antenna wire
Lower antenna segment
Fig. 4.3: Stator housing and lower antenna segment with antenna wire
1. Undo and remove the bolted connections (M5) on the upper antenna segment.
There are fan‐type lock washers between the antenna segments: make
sure that they do not get lost.
2. Use an appropriate mounting base to install the stator housing in the shaft
train so that there is sufficient opportunity for horizontal and vertical adjustments. Do not fully tighten the bolts yet.
3. Now use two hexagon socket screws to mount the upper antenna segment
removed in Point 1 on the lower antenna segment.
Make sure that the two fan‐type lock washers are inserted between the antenna
segments (these ensure that there is a defined contact resistance)!
Important
To make sure that they function perfectly, the fan‐type lock washers (A5,
3-FST DIN 6798 ZN/galvanized) must be replaced after the bolted antenna
connection has been loosened three times.
4. Now tighten all antenna‐segment bolted connections with a tightening
torque of 5 Nm.
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T40B
5. Rotational speed measurement without a sensor for the reference signal
(zero index):
Then align the antenna to the rotor in such a way that the antenna
encloses the rotor more or less coaxially and the antenna wire in the
axial direction has the same position as the center of the transmitter
winding on the rotor.
To make this alignment easier, the antenna segment and the transmitter
winding on flange B have the same width. Please comply with the permissible alignment tolerances stated in the specifications.
Fig. 4.4: Alignment of the rotor with the stator (without a reference signal
sensor)
Rotational speed measurement with a sensor for the reference signal (zero
index):
Tilt the stator slightly (see Fig. 4.5, left), so that the bracket with the
sensor head for the reference signal (zero index) is between the two
flanges. Now tip the stator over the rotor until the antenna ring completely covers the flange with the transmitter winding (see Fig. 4.5, right).
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T40B
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Fig. 4.5: Alignment of the rotor with the stator (with a reference signal sensor)
6. Now fully tighten the bolted stator housing connection.
Prevention of stator axial oscillation
Depending on the operating conditions, the stator may be induced to oscillate.
This effect is dependent on:
the rotational speed,
the antenna diameter (depends in turn on the measuring range),
the design of the machine base.
Important
To prevent this axial oscillation, the antenna ring requires additional support
by the customer. There is a socket (with an M5 internal thread) on the upper
antenna segment, which can be used for a suitable clamping device (see
Fig. 4.6).
If this is the case, the cable plug also needs some support, as shown in the
construction example in Fig. 4.7.
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T40B
Fig. 4.6: Construction example for supporting the antenna ring
Fig. 4.7: Construction example for plug clamps (for two plugs)
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T40B
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4.7 Rotational speed measuring system, reference signal (optional)
The optional rotational speed measuring system (also with the additional reference signal and zero index option) is integrated into the transducer at the
factory, so no installation is required.
Magnetic ring for rotational
speed measurement
Sensor head for the
reference signal
Sensor head for rotational
speed measurement
Fig. 4.8: Torque transducer with rotational speed measurement and reference sig-
nal
Rotational speed measuring system sensor head alignment
If the stator is accurately aligned for torque measurement, the rotational
speed measuring system and the sensor for the reference signal (zero index)
are also correctly aligned. So the two Allen screws on the sensor head
(Fig. 4.9) must not be loosened.
Important
You must not change the position of the sensor head.
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Never loosen the screws!
Sensor head for rotational
speed measurement
T40B
Fig. 4.9: Torque transducer with sensor head for rotational speed measurement
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T40B
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5 Electrical connection
5.1 General information
With cable extensions, make sure that there is a proper connection with
minimum contact resistance and good insulation.
All cable connectors or swivel nuts must be fully tightened.
Important
Transducer connection cables from HBM with plugs attached are identified in
accordance with their intended purpose (Md or n). When cables are
shortened, inserted into cable ducts or installed in control cabinets, this identification can get lost or become concealed. So the cables must be marked
beforehand, just in case.
5.2 EMC protection
Important
The transducers are EMC‐tested in accordance with EC directives and identified by CE certification. However, you must connect the shield of the connection cable on the shielding electronics enclosure in order to achieve EMC protection for the measuring chain.
Special electronic coding methods are used to protect the purely digital signal
transmission between the transmitter head and the rotor from electromagnetic
interference.
The cable shield is connected with the transducer housing. This encloses the
measurement system (without the rotor) in a Faraday cage when the shield is
laid flat at both ends of the cable. With other connection techniques, an
EMC-proof shield should be applied in the wire area and this shielding should
also be connected extensively (also see HBM Greenline Information, brochure
i1577).
Electrical and magnetic fields often induce interference voltages in the measuring circuit. Therefore:
Use shielded, low‐capacitance measurement cables only (HBM cables ful-
fill both conditions).
Only use plugs that meet EMC guidelines.
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T40B
Do not route the measurement cables parallel to power lines and control cir-
cuits. If this is not possible, protect the measurement cable withsteel conduits,
for example.
Avoid stray fields from transformers, motors and contact switches.
Do not ground the transducer, amplifier and indicator more than once.
Connect all devices in the measuring chain to the same protective earth
conductor.
In the case of interference due to potential differences (compensating cur-
rents), the connection between supply voltage zero and housing ground
must be broken at the amplifier and a potential equalization line established
between the stator housing and the amplifier housing (copper conductor, at
2
least 10 mm
wire cross-section).
Should differences in potential occur between the machine rotor and stator
because of unchecked leakage, for example, this can usually be overcome
by connecting the rotor definitively to ground, e.g. with a wire loop. The
stator must be connected to the same (ground) potential.
5.3 Connector pin assignment
The stator housing has two 7‐pin connectors, an 8‐pin connector and a 1‐pin
connector.
The supply voltage connections and shunt signal connections of connectors 1
and 3 are each electrically interconnected, but are protected against compensating currents by diodes. There is also an automatically resetting fuse
(multifuse) to protect the supply connections against overload by the stator.
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T40B
Assignment for connector 1:
Supply voltage and frequency output signal.
27
Connector
pin
Device plug
61
5
72
3
4
Top view
1)
RS-422 complementary signals; with cable lengths exceeding 10 m, we recommend
1
2 Supply voltage 0 V; bk 5
3 Supply voltage 18 V 30 V bu 6
4
5
6 Shunt signal trigger 5 V 30 V gn 14
7 Shunt signal 0 V; gy 8
Assignment Color
code
Torque measurement signal
(frequency output; 5 V
Torque measurement signal
(frequency output; 5 V
Measurement signal 0 V;
symmetrical
Shielding connected to housing ground
1),2)
) wh 13
1),2)
) rd 12
gy 8
using a termination resistor R = 120 ohms between the (wh) and (rd) wires.
2)
RS-422: Pin 1 corresponds to A, Pin 4 corresponds to B.
Sub‐D
connector
pin
NOTE
Torque flanges are only intended for operation with a DC supply voltage. They
must not be connected to older HBM amplifiers with square‐wave excitation.
This could destroy the connection board resistors or cause other faults in the
amplifiers.
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Assignment for connector 2:
Rotational speed output signal, reference signal (optional).
T40B
Connector
Assignment
pin
1)
1)
1)
1)
1)
1)
Device plug
2
5
3
4
8
1
6
7
Top view
1
Rotational speed measurement signal
(pulse string, 5 V; 0)
2 Reference signal (1 pulse/revolution, 5V)
3
Rotational speed measurement signal
(pulse string, 5 V; 90phase shifted)
4 Reference signal (1 pulse/revolution, 5V)
5 Not in use
6
7
Rotational speed measurement signal
(pulse string, 5 V; 0)
Rotational speed measurement signal
(pulse string, 5 V; 90phase shifted)
8 Operating voltage zero
Shielding connected to housing ground
1)
RS-422 complementary signals; with cable lengths exceeding 10 m, we recommend
using a termination resistor of R = 120 ohms.
Assignment for connector 3:
Supply voltage and voltage output signal.
Device plug
61
72
5
3
4
Top view
Connector
pin
1 Torque measurement signal (voltage output; 0 V )
2
3 Supply voltage 18 V 30 V DC
4
5 Not in use
6 Shunt signal trigger 5 V 30 V
7 Shunt signal 0 V;
Assignment
Supply voltage 0 V;
Torque measurement signal (voltage output; "10 V)
Shielding connected to housing ground
Assignment for connector 4:
TMC - only for connection to the TIM 40 Torque Interface Module within HBM.
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T40B
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5.4 Supply voltage
The transducer must be operated with a separated extra‐low voltage (nominal
(rated) supply voltage 18 30 V
flanges within a test bench at the same time. Should the device be operated
1)
on a DC voltage network
, additional precautions must be taken to discharge
excess voltages.
The information in this section relates to the self‐contained operation of the
T40B, without HBM system solutions.
The supply voltage is electrically isolated from signal outputs and shunt signal
inputs. Connect a separated extra‐low voltage of 18 V 30 V to pin 3 (+) and
). You can supply one or more torque
DC
pin 2 (
) of connectors 1 or 3. We recommend that you use HBM cable KAB
8/00-2/2/2 and the appropriate sockets (see Accessories). The cable can be
up to 50 m long for voltages 24 V, otherwise it can be up to 20 m long.
If the permissible cable length is exceeded, you can supply the voltage in parallel over two connection cables (connectors 1 and 3). This enables you to
double the permissible length. Alternatively, install a power supply on site.
Important
The instant you switch on, a current of up to 4 A may flow and this may switch
off power supplies with electronic current limiters.
1)
Distribution system for electrical energy with greater physical expansion (over several test benches, for
example) that may possibly also supply consumers with high nominal (rated) currents.
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T40B
6 Shunt signal
The T40B torque flange delivers an electrical shunt signal that can be activated from the amplifier in measuring chains with HBM components. The transducer generates a shunt signal of about 50% of the nominal (rated) torque;
the precise value is specified on the type plate. After activation, adjust the
amplifier output signal to the shunt signal supplied by the connected transducer to adapt the amplifier to the transducer.
The transducer should not be under load when the shunt signal is being
measured, as the shunt signal is mixed additively.
Triggering the shunt signal
Applying a separated extra‐low voltage of 5 30 V to pins 6 (+) and 7 (
connector 1 or 3 triggers the shunt signal.
The nominal (rated) voltage for triggering the shunt signal is 5 V (triggering at
U > 2.5 V), but when voltages are less than 0.7 V, the transducer is in measuring mode. The maximum permissible voltage is 30 V, current consumption
at nominal (rated) voltage is approx. 2 mA and at maximum voltage, approx.
18 mA. The voltage for triggering the shunt signal is electrically isolated from
the supply and measuring voltage.
) at
Tip
The shunt signal can be triggered by the amplifier or via the operating software in HBM system solutions.
A3452-5.0 en/deHBM
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