KTR DATAFLEX 110 Series Manual

DATAFLEX®110/...
Torque Measuring Shaft
Operating/Assembly instructions
KTR-N
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Edition:
49018 EN
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DATAFLEX®
Torque measuring shaft type 110/…

DATAFLEX®110/...
Torque Measuring Shaft
Operating/Assembly instructions
KTR-N
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Edition:
49018 EN
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1
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DATAFLEX®is a maintenance-free torque measuring shaft with integrated speed measurement.
Combined with the steel lamina coupling RADEX®-N the complete system forms a torsionally stiff,
double-cardanic coupling with integrated measuring shaft.
1Technical data 3
2Advice 5
2.1 General advice 5
2.2 Safety and advice symbols 5
2.3 General hazard warnings 5
2.4Intended use 6
3Storage, transport and packaging 6
3.1 Storage 6
3.2 Transport and packaging 6
4Assembly 7
4.1 Components of DATAFLEX®torque measuring shaft 7
4.2 Advice for finish bore 8
4.3 Displacements - alignment of the torque measuring shaft 8
4.4 Assembly of the hubs 9
4.5 Assembly of the RADEX®-N clamping ring hubs on the DATAFLEX®torque measuring
shaft 9
4.6 Assembly of hubs on the driving and driven side 10
4.7 Assembly of the lamina sets, RADEX®-N size 135 11
4.8 Assembly of the lamina sets, RADEX®-N size 156 11
4.9 Tightening torques of screw connections on the lamina set 12
4.10 Advice for assembly of the DATAFLEX®torque measuring shaft 13
4.11 Technical description 13
5Disposal 21
6Maintenance and service 21
7Services, customer service addresses 21
8EC Certificate of conformity 22
Table of contents

DATAFLEX®110/...
Torque Measuring Shaft
Operating/Assembly instructions
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DATAFLEX®torque measuring shaft
Illustration 1: DATAFLEX®torque measuring shaft
Table 1: Dimensions
DATAFLEX®
type
Dimensions [mm]
d
D
L1
L2
L3
L4
L5
H
B
X
110/10000
110
196
393
120
153
138
7.5
141.4
50
34
110/20000
Table 2: Technical data
Coupling size of DATAFLEX®
110/10000
110/20000
Electrical data
Rated torque TKN [Nm]
-10000 .. +10000 Nm
-20000 .. +20000 Nm
Band width of torque signal [kHz] (-3dB)
2
Error in linearity incl. hysteresis [%] 1)
< 0.1
Influence of temperature [%/10K]
0.05
Nominal temperature range [°C]
0 - 55
Supply voltage [V] DC
24 ± 4
Max. current consumption [mA]
100
Torque output
Output voltage torque [V]
-10 .. +10
Speed output 2)
Number of pulses / revolutions
2 x 720
Amplitude [V]
5/24
DC voltage output [V]
0 - 10
Scale of DC voltage output
16fold via micro switch
Inaccuracy of DC voltage output [%] 3)
± 0.2
Direction signal [V]
5/24
Mechanical data
Static load limit TKmax. 1) [%]
150
Breaking load TK break 1) [%]
300
Max. bending torque [Nm]
1033
2037
Max. radial force [N]
4700
9300
Max. axial force [kN]
106
166
Weight [kg]
35.72
36.20
Torsion spring stiffness CT[Nm/rad]
2270000
3550000
Torsion angle with TKN [degrees]
0.25
0.32
Mass moment of inertia [kgmm2]
0.0562
0.0569
Max. speed [rpm]
3000
1) Referring to rated torque TKN
2) With connection housing DF2
3) Referring to upper range value
1 Technical data

DATAFLEX®110/...
Torque Measuring Shaft
Operating/Assembly instructions
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Edition:
49018 EN
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DATAFLEX®torque measuring shaft in combination with RADEX®-N
Illustration 2: DATAFLEX®with RADEX®-N
Table 3: Dimensions and technical data
Coupling size of DATAFLEX®
110/10000
110/20000
Coupling size of RADEX®-N
135
156
Dimensions [mm]
Dimension d1/ d2max.
135
150
Dimension D1
305
325
Dimension D2
184
195
Dimension L6
423
493
Dimension L7
135
150
Dimension L8
477
547
Dimension LGes
747
847
Dimension E
27
27
Setscrew [mm]
Dimension G
M20
2 x M12
Dimension t
40
30 / 70
Tightening torque TA[Nm]
140
40
Mechanical data of combination (DATAFLEX®with RADEX®-N)
Mass moment of inertia [kgmm2]
1.04
1.39
Torsion spring stiffness [Nm/rad]
1.28 x 106
2.22 x 106
Weight [kg]
134.2
158.4
Max. speed [rpm] 1)
3000
3000
1) Higher speeds on request.
1 Technical data

DATAFLEX®110/...
Torque Measuring Shaft
Operating/Assembly instructions
KTR-N
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Please read through these operating/assembly instructions carefully before you start up the measuring shaft.
Please pay special attention to the safety instructions!
The operating/assembly instructions are part of your product. Please store them carefully and close to the
measuring shaft. The copyright for these operating/assembly instructions remains with KTR.
Warning of potentially explosive
atmospheres
This symbol indicates notes which may contribute to
preventing bodily injuries or serious bodily injuries that
may result in death caused by explosion.
STOP
Warning of personal injury
This symbol indicates notes which may contribute to
preventing bodily injuries or serious bodily injuries that
may result in death.
!
Warning of product damages
This symbol indicates notes which may contribute to
preventing material or machine damage.

General advice
This symbol indicates notes which may contribute to
preventing adverse results or conditions.
STOP
With assembly, operation and maintenance of the measuring shaft it has to be made sure
that the entire drive train is secured against accidental switch-on. You may be seriously hurt
by rotating parts. Please make absolutely sure to read through and observe the following
safety indications.
•All operations on and with the measuring shaft have to be performed taking into account "safety first".
•Please make sure to switch off the power pack before you perform your work on the measuring shaft.
•Secure the power pack against accidental switch-on, e. g. by providing warning signs at the place of switch-on
or removing the fuse for current supply.
•Do not reach into the operation area of the measuring shaft as long as it is in operation.
•Secure the rotating components of the measuring shaft against accidental contact. Please provide for the
necessary protection devices and covers.
2 Advice
2.1 General advice
2.2 Safety and advice symbols
2.3 General hazard warnings

DATAFLEX®110/...
Torque Measuring Shaft
Operating/Assembly instructions
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You may only assemble, operate and maintain the measuring shaft if you
•have carefully read through the operating/assembly instructions and understood them
•had technical training
•are authorized by your company
The measuring shaft may only be used in accordance with the technical data (see chapter 1). Unauthorized
modifications on the measuring shaft are not admissible. We will not assume liability for any damage that may
arise. In the interest of further development we reserve the right for technical modifications.
The DATAFLEX®torque measuring shaft described in here corresponds to the technical status at the time of
printing of these operating/assembly instructions.
The RADEX®-N couplings are supplied in preserved condition. Both DATAFLEX®and RADEX®-N can be stored
at a dry and covered place for 6 - 9 months.
!
Humid storage rooms are not suitable.
Please make sure that condensation is not generated. The best relative air humidity is less
than 65 %.
!
In order to avoid any injuries and any kind of damage please always make use of proper
transport and lifting equipment.
The couplings are packed differently each depending on size, number and kind of transport. Unless otherwise
contractually agreed, packaging will follow the in-house packaging specifications of KTR.
2 Advice
2.4 Intended use
3 Storage, transport and packaging
3.1 Storage
3.2 Transport and packaging

DATAFLEX®110/...
Torque Measuring Shaft
Operating/Assembly instructions
KTR-N
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Edition:
49018 EN
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The measuring shaft and the couplings are supplied as single pre-assembled component assemblies. Before
assembly the measuring shaft has to be inspected for completeness.
The mounting position of DATAFLEX®is variable. The measurement system can be mounted both horizontally
and vertically.
Components of DATAFLEX®torque measuring
shaft
Components of RADEX®-N coupling
Component
Quantity
Component assembly
Component
Quantity
Component assembly
1
1
DATAFLEX®torque
measuring shaft
2
2
Flange hub
3
2
Lamina set
4
2
Clamping ring hub with
clamping ring
5
2
Setscrew DIN EN ISO 4029
Illustration 3: DATAFLEX®70 torque measuring shaft with RADEX®-N

Please consider our operating/assembly instructions KTR-N 47110 additionally when using
the RADEX®-N coupling.
4 Assembly
4.1 Components of DATAFLEX®torque measuring shaft

DATAFLEX®110/...
Torque Measuring Shaft
Operating/Assembly instructions
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STOP
The maximum permissible bore diameters d1max and
d2max (see RADEX®-N catalogue) must not be
exceeded. If these figures are disregarded, the
coupling may tear. Rotating particles may cause
danger to life.
•Hub bores machined by the customer have to observe
concentricity or axial runout, respectively (see
illustration 4).
•Please make absolutely sure to observe the figures
for Ø d1max and Ø d2max.
•Carefully align the hubs when the finish bores are
drilled.
•Please provide for a setscrew according to
DIN EN ISO 4029 with a cup point or an end plate to
fasten the hubs axially.
Illustration 4: Concentricity and axial runout
The displacement figures specified in table 4 provide for sufficient safety to compensate for external influences
like, for example, thermal expansion or foundation settling.
!
In order to ensure a long service life of the measuring shaft, the shaft ends have to be
accurately aligned. Please absolutely observe the displacement figures specified (see
table 4). If the figures are exceeded, the measuring shaft with coupling will be damaged.
Please note:
•The displacement figures specified in table 4 are maximum figures which must not arise in parallel. If radial,
axial and angular displacement arises at the same time, these values must be reduced (see illustration 6).
•Please inspect with a dial gauge, ruler or feeler gauge whether the permissible displacement figures specified
in table 4 can be observed.
Angular displacement
Radial displacement
Illustration 5: Displacements
Axial displacement
4 Assembly
4.2 Advice for finish bore
4.3 Displacements - alignment of the torque measuring shaft

DATAFLEX®110/...
Torque Measuring Shaft
Operating/Assembly instructions
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Table 4: Displacement figures
DATAFLEX®
size
RADEX®-N size
Max. axial
displacement Ka[mm]
Max. radial displacement
Kr[mm]
Max. angular
displacement Kw
[degree] 1)
110/10000
135
3.5
7.8
1.0
110/20000
156
4.2
5.8
0.7
1) each lamina set
Examples of the displacement
combinations specified in illustration 6:
Example:
Kr = 60%
Kw = 20%
Ka = 20%
Illustration 6:
Combinations of
displacement
Ktotal = Ka+ Kr+ Kw100%

We recommend to inspect bores, shaft, keyway and feather key for dimensional accuracy
before assembly.
The power transmission is frictionally engaged. Fit pair of shaft-clamping ring hub is specified with H7/h6.
•Please clean and degrease the contact surfaces of the hub bores and the shafts before assembly.
!
Applying for RADEX®-N 135 only:
Oils and greases containing molybdenum disulfide or other high-pressure additives as well
as internal lubricants must not be used.
Applying for RADEX®-N 156 only:
Do not lubricate taper surfaces of the clamping ring hubs with initial assembly, since the
components are coated with lubricant when being supplied. For re-lubrication, for example
after disassembly, please use the multi-purpose fat Molykote G Rapid plus. Only use thin-
fluid oil for the threads of the clamping screws.
•Lightly unscrew the clamping scews, shift the clamping ring hub onto the shaft of the measuring shaft and
align to dimension L6.
•Tighten the clamping screws evenly crosswise. Increase the tightening torque stepwise.
Repeat this process until the tightening torque specified in table 5 has been achieved with all clamping screws.
•Applying for RADEX®-N 156 only:
No gap allowed between hub and clamping ring after tightening of all clamping screws (see illustration 8).
4 Assembly
4.3 Displacements - alignment of the torque measuring shaft
4.4 Assembly of the hubs
4.5 Assembly of the RADEX®-N clamping ring hubs on the
DATAFLEX®torque measuring shaft

DATAFLEX®110/...
Torque Measuring Shaft
Operating/Assembly instructions
KTR-N
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Edition:
49018 EN
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Illustration 7: Assembly of clamping ring hubs
Illustration 8: Adjusting to dimension L6
Table 5: Tightening torques of clamping screws
Coupling size of DATAFLEX®
110/10000
110/20000
Coupling size of RADEX®-N
135
156
Screw size
M16
M16
Tightening torque TA[Nm]
295
295
Transmittable torque [Nm] 1)
(frictional torque)
24800
30000
1) H7/h6 shaft/hub fit
•Mount the hubs on the shaft of driving and driven side (see illustration 9). The ends of the shafts must not
protrude through the hubs.
•Shift the power packs in axial direction until the dimension L8is achieved.
•If the power packs are already firmly assembled, shifting the hubs axially on the shafts allows for adjusting the
distance dimension L8.

On request the hubs can be provided with a bore for setscrews for axial fastening. Please
specify in your order.
!
With the assembly please make sure that the distance dimension L8(see table 3) is
observed.
Disregarding this advice may cause damage to the measuring shaft (coupling).
Illustration 9: Assembly of the hubs on the driving and driven side
Illustration 10: Adjusting to dimension L8
4 Assembly
4.5 Assembly of the RADEX®-N clamping ring hubs on the
DATAFLEX®torque measuring shaft
4.6 Assembly of hubs on the driving and driven side

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Torque Measuring Shaft
Operating/Assembly instructions
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!
With the assembly please make sure that the lamina sets are installed free from distortion in
axial direction. Disregarding this advice may cause damage to the coupling.
•Insert the lamina sets and the DATAFLEX®measuring shaft.
•Hand-tighten the components for the time being, with the fit bolts being assembled displaced from left to right
(see illustration 11).
•Tighten the fit bolts to the tightening torques mentioned in table 6 by means of a suitable torque key.
Illustration 11: Assembly of lamina sets, RADEX®-N size 135
!
With the assembly please make sure that the lamina sets are installed free from distortion in
axial direction. Disregarding this advice may cause damage to the coupling.
•Insert the lamina sets and the DATAFLEX®measuring shaft.
•Hand-tighten the components for the time being, with the fit bolts being assembled displaced from left to right
(see illustration 12). With size 156 use a washer under the screw head.
•The pressure screws in the clamping nut must not protude on the pressure side (see illustration 13).
!
All components must be superimposed without any gap.
•Afterwards turn back the clamping nut until there is a gap of 1 - 2 mm (see illustration 13).
•Hand-tighten the pressure screws marked in illustration 15.
•Tighten these screws (see illustration 15) at half the tightening torque according to table 6 and afterwards at
the full tightening torque according to table 6.
•Now tighten all pressure screws one after another and with several revolutions until all screws have achieved
the full tightening torque (illustration 16).
!
The pressure screws must not bear on the heads after assembly (see illustration 14).
•All clamping nuts have to be mounted as per the aforementioned process.
4 Assembly
4.7 Assembly of the lamina sets, RADEX®-N size 135
4.8 Assembly of the lamina sets, RADEX®-N size 156

DATAFLEX®110/...
Torque Measuring Shaft
Operating/Assembly instructions
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Edition:
49018 EN
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Illustration 12: Assembly of lamina sets, RADEX®-N size 156
Illustration 13
Illustration 14
Illustration 15: Tightening of
pressure screws
Illustration 16: Tightening of
pressure screws
(one after another)
The fit bolts have to be tightened to the tightening torques TAspecified in table 6.
Table 6: Tightening torques of the fit bolts
Coupling size of DATAFLEX®
110/10000
110/20000
Coupling size of RADEX®-N
135
156
Screw size G1
M24
M27
Screw size G2
-
9 x M8
Tightening torque TA[Nm]
900
-
Pressure screw G2
Tightening torque TA[Nm]
-
30
!
Having started up the coupling, the tightening torque of the fit bolts has to be inspected at
regular maintenance intervals.
4 Assembly
4.8 Assembly of the lamina sets, RADEX®-N size 156
4.9 Tightening torques of screw connections on the lamina set

DATAFLEX®110/...
Torque Measuring Shaft
Operating/Assembly instructions
KTR-N
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Edition:
49018 EN
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•Fixing the housing
!
The housing must be protected from rotation. For that purpose there is a thread size M5 at
the bottom side. Please make absolutely sure to avoid a rigid fixing of the housing!
!
Opening the housing is not required and may cause damage to the measuring shaft.
•Degree of protection
All DATAFLEX®measuring shafts type 110 correspond to protection class IP51 according to DIN EN 60529.
•Maintenance
The DATAFLEX®measuring shaft is maintenance-free. Lubrication or cleaning is not necessary.
•Calibration
The transducer is calibrated when being supplied. We recommend an annual inspection of the calibration.
1. General description
The measuring shafts type DATAFLEX®110 are provided with wire strain gauges (DMS) the signals of which are
transmitted contactless.
In addition, a two-channel shaft encoder provides two speed signals shifted by 90 degrees. Each signal has a
resolution of 720 periods per revolution. The measuring shaft is connected to the connection housing DF2 via the
connection cable which is available as an accessory.

The measuring shaft should not be switched on before all connections have been properly
connected. After initial switch-on the measuring shaft needs about 5 minutes until the
warm-up period is finished and the measurement device has its standard accuracy.
4 Assembly
4.10 Advice for assembly of the DATAFLEX®torque measuring shaft
4.11 Technical description

DATAFLEX®110/...
Torque Measuring Shaft
Operating/Assembly instructions
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2. Connection housing DF2
The connection housing DF2 has 12 screw terminals to connect power supply, display equipment and switches.
The torque signal is displayed as proportional direct voltage from -10 … 10 V.
For the speed display two square wave signals, one scalable voltage signal and one direction signal are available
(for pin configuration see table 7).
The button T1 serves for programming and can be bridged externally from GND via the terminal 12 (T1).
Table 7: Pin assignment of the connection housing DF2
No.
Description
Function
Features
Illustration 17: Connection housing
DF2
Input operating voltage
10
24V
Supply voltage +
24V DC ± 4V / 100 mA
11
GND
Supply voltage -
Torque output
4
M-U
Output voltage +
-10V ... 10V (RA= 1 k)
5
GND
Ground torque output
6
M-I
Without function
Speed output pulse signal
7
N1
Speed output
channel 1
HTL (24V, 720 pulses/rev.)
TTL (5V, 720 pulses/rev.)
8
GND
Ground for pulse speed
output
9
N2
Speed output
channel 2
HTL (24V, 720 pulses/rev.)
TTL (5V, 720 pulses/rev.)
Speed output DC-voltage
1
R/L
Direction signal speed
HTL (24V, clockwise = 0)
TTL (5V, clockwise = 0)
2
GND
Ground for DC speed output
3
N-U
Speed of DC voltage output
0 V ... 10 V (scalable)
Other connections / operating devices
12
T1
Push button T1
External push button
connection T1
13
L1, L2
Signal LEDs
14
T1, T2
Push button T1, T2
Push button for programming
15
TP
Switch low pass filter
On/off switch low-pass
16
-
Connection of measuring
shaft
1:1 Connection cable
17
-
Switch for speed scaling
see table 11
3. Description of connections
a) Supply voltage 24V (No. 10 and 11)
The supply voltage is 24V ± 4V direct current voltage (DC). The current consumption is 100 mA at the maximum.
4 Assembly
4.11 Technical description

DATAFLEX®110/...
Torque Measuring Shaft
Operating/Assembly instructions
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b) Torque signal M-U (No. 4 and 5)
The output voltage is proportional to the torque with an output of values between -10V and 10V.
Table 8 shows the relation between torque and output voltage.
Table 8: Assignment of
torque - output values
DATAFLEX®
size
M / V
110/10000
1000 Nm / V
110/20000
2000 Nm / V
Illustration 18: Assignment of
torque - output values
c) Filter voltage output (No. 15)
The torque signal may be filtered by activating a low-pass filter so that high-frequency parts of the signal are
eliminated.
Table 9: Low pass button (No. 15)
Switch position TP
Left
Right
Low pass on
Low pass off
The limit frequency of the filter can be changed by varying the
DIP switches (see illustration 19) inside the connection housing:
Illustration 19: Location of DIP switch
Table 10: Adjustment of the requested filter frequency
Limit frequency [Hz]
Switch 1
Switch 2
Switch 3
Switch 4
2000
OFF
OFF
OFF
OFF
1000
ON
OFF
OFF
OFF
100
OFF
ON
OFF
OFF
10
OFF
OFF
ON
OFF
1
OFF
OFF
OFF
ON
A filter frequency of 1000 Hz is preset.
4 Assembly
4.11 Technical description

DATAFLEX®110/...
Torque Measuring Shaft
Operating/Assembly instructions
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d) Speed signals N1, N2, N-U, R/L (No. 1, 3, 7, 9)
The connection housing DF2 has 4 connections
for speed output:
- Two square-wave signals shifted by 90
degrees (N1, N2)
- A scalable voltage output (N-U) with direction
signal (R/L)
Illustration 20
Outputs N1 and N2
Each of the speed outputs N1 and N2 provide a square-wave signal with a resolution of 2x720 periods per
revolution (illustration 21).
Illustration 21
The speed is calculated as follows:N [rpm] = f [Hz] / 7.5
The speed channel signals N1 and N2 have a phase shift of 90 degrees to each other. Depending on the
rotational direction one of the two signals leads 90° in phase (illustration 22).
Clockwise
Illustration 22
4 Assembly
4.11 Technical description

DATAFLEX®110/...
Torque Measuring Shaft
Operating/Assembly instructions
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Output circuit (connection N1 and N2)
The speed outputs N1 and N2 have short-circuit proof push-
pull outputs providing a square-wave voltage with an
amplitude of 24V and a maximum switching current of 30 mA.
The output terminals must not be charged with an external
voltage (see illustration 23).
The output voltage of speed lines and torsional direction line
can be varied by modifying the jumper position in the
connection housing to 5V level (see illustration 24).
Illustration 23: Output circuit of speed outputs
Illustration 24: Modification of voltage level for the speed signal/direction signal
4 Assembly
4.11 Technical description

DATAFLEX®110/...
Torque Measuring Shaft
Operating/Assembly instructions
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Edition:
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note ISO 16016.
Drawn:
2017-08-02 Pz/Da
Replacing:
---
Verified:
2017-08-03 Pz
Replaced by:
Outputs N-U and R/L
The KTR connection housing DF02 has an integrated f/U
converter which converts the square wave signals of the
encoder into a linear DC voltage output (terminal N-U) and
generates an additional signal for the rotational direction
(terminal R/L).
On the bottom side of the connection housing DF02 there is a
sixfold multiple switch allowing to adapt the scaling of the
speed signal to the type of measuring shaft and the speed
range (see illustration 17 and 25).
Illustration 25: Switch positions
Scaling of the speed direct voltage output
Table 11: Switch position S1-S4 and the corresponding scale of the speed output N-U
Max. speed
Scaling
S1
S2
S3
S4
Illustration 26
10
1 rpm / V
0
0
0
0
20
2 rpm / V
0
0
0
1
40
4 rpm / V
0
0
1
0
60
6 rpm / V
0
0
1
1
80
8 rpm / V
0
1
0
0
100
10 rpm / V
0
1
0
1
200
20 rpm / V
0
1
1
0
400
40 rpm / V
0
1
1
1
600
60 rpm / V
1
0
0
0
800
80 rpm / V
1
0
0
1
1000
100 rpm / V
1
0
1
0
2000
200 rpm / V
1
0
1
1
4000
400 rpm / V
1
1
0
0
6000
600 rpm / V
1
1
0
1
8000
800 rpm / V
1
1
1
0
10000
1000 rpm / V
1
1
1
1
Table 12: Selection of DATAFLEX®series
DATAFLEX®type
S5
S6
DATAFLEX®22, 42, 85, 140
0
0
DATAFLEX®16
1
1
DATAFLEX®32, 42 (red), 110
0
1
DATAFLEX®70
1
0
Table 13: Direction signal
Output voltage R/L
Torsional direction
The signal of the speed direction output R/L
shows the rotational direction (see table 13).
0
Clockwise
24V
Counter-clockwise
* Switching between 5V and 24V possible (see illustration 24 Modification of voltage level for the speed
signal/direction signal)
4 Assembly
4.11 Technical description

DATAFLEX®110/...
Torque Measuring Shaft
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
49018 EN
19 of 22
1
Please observe protection
note ISO 16016.
Drawn:
2017-08-02 Pz/Da
Replacing:
---
Verified:
2017-08-03 Pz
Replaced by:
e) Control buttons and LEDs (No. 12 to 14 and illustration 27)
The connection housing DF02 has control switches and LEDs for offset adjustment and sensor test. For reasons
of safety the sensor test can only be performed during the first 15 seconds after switching on. The zero
adjustment can be performed after a turn-on period of 15 seconds (illustration 27). The termination of the
15 seconds period is signalized by a short blinking of the LEDs of the connection housing.
Illustration 27
Automatic zero adjustment (illustration 28)
If the „push button“ T1 is activated for a period of 2 seconds, the output of the torque signal is automatically set to
0 Volt. The adjusting is effected irrespective of the amount of the actual torque.
The termination of the adjustment is confirmed by fast blinking of the LED L1. The new zero point has been saved
and the device is in the measuring mode again.

•The automatic zero adjustment can only be performed if the measuring shaft is switched
on for more than 15 seconds.
•If necessary, the automatic zero adjustment can be performed by an external control, too.
If the potential of the terminal clamp T1 is connected with GND for 2 seconds, an
automatic zero adjustment is performed.
Illustration 28: Automatic zero adjustment
4 Assembly
4.11 Technical description

DATAFLEX®110/...
Torque Measuring Shaft
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
49018 EN
20 of 22
1
Please observe protection
note ISO 16016.
Drawn:
2017-08-02 Pz/Da
Replacing:
---
Verified:
2017-08-03 Pz
Replaced by:
Manual zero adjustment
The zero point of the torque output can be adjusted manually. For this purpose both push buttons T1 and T2 are
activated simultaneously for 2 seconds. The LED L1 is blinking four times.
Pressing the push button T1 increases the voltage, pressing the push button T2 decreases the voltage. The
modifications are accelerated if the corresponding push button is pressed permanently. Each amendment is
confirmed by short blinking of the LED L2.
Having performed the adjusting the new values are stored lastingly by pressing both push buttons again for
2 seconds. The LED L1 is illuminated once and signalizes the return to the measuring mode.

•The manual zero adjustment can only be performed if the measuring shaft is switched on
for more than 15 seconds and the signal has levelled off.
Illustration 29: Manual zero adjustment
Sensor test
During the first 15 seconds after powering up the torque sensor can be inspected for operativeness. If the push
button T2 is pressed for 2 seconds the torque voltage output will be increased by approx. 4 Volt for the period of
2 seconds.

•The sensor test can only be performed during the first 15 seconds after switching on.
Illustration 30: Sensor test
4 Assembly
4.11 Technical description