turck LTX Series User manual

Your Global Automation Partner
Operating instructions
LTX
Linear Position Sensors
with Analog Output

2 Hans Turck GmbH & Co. KG | T [phone] | F [phone] | [e-mail] | www.turck.com

Contents

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1 About These Instructions 5
1.1 Target groups 5
1.2 Explanation of symbols 5
1.3 Other documents 5
1.4 Feedback about these instructions 5
2 Information About the Product 6
2.1 Product identication 6
2.2 Scope of delivery 6
2.3 Legal requirements 6
2.4 Manufacturer and service 7
3 For your Safety 7
3.1 Intended use 7
3.2 General safety information 7
4 Product Description 8
4.1 Device overview 8
4.1.1 Display elements 8
4.2 Properties and features 8
4.3 Operating principle 9
4.4 Functions and operating modes 9
4.4.1 Automatic signal control 9
4.4.2 Current output 9
4.4.3 Voltage output 9
4.4.4 Preferred types LTX…M-F10-LI0-X3-H1151 – Measuring range 9
4.5 Technical accessories 10
5 Mounting 13
5.1 Mounting the device in a hydraulic cylinder 14
5.1.1 Mounting the sensor 14
5.2 Fastening the device externally with a mounting bracket 15
5.2.1 Fitting additional mounting elements (for external mounting) 16
5.2.2 Mounting positioning elements (for external mounting) 16
6 Connection 17
6.1 Wiring diagram 17
7 Commissioning 18
8 Operation 19
8.1 LED display 19
8.2 Diagnostics 19
9 Setting 20
9.1 Setting via manual bridging 20
9.2 Setting via teach adapter RP-Q21 20
10 Troubleshooting 20
10.1 Replacing the sensor head and measuring element 21

Contents

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11 Maintenance 21
12 Repair 22
12.1 Returning devices 22
13 Disposal 22
14 Technical Data 23
14.1 Update time 23

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1 About These Instructions
These operating instructions describe the structure, functions and the use of the product, and
will help you to operate the product as intended. Read these instructions carefully before using
the product. This will prevent the risk of personal injury or damage to property or the device.
Retain these instructions for future use during the service life of the product. If the product is
passed on, ensure that these instructions are handed over as well.
1.1 Target groups
These instructions are intended for qualified personnel and must be read carefully by anyone
mounting, commissioning, operating, maintaining, dismantling or disposing of the device.
1.2 Explanation of symbols
The following symbols are used in these instructions:
DANGER
DANGER indicates an imminently hazardous, high-risk situation which, if not avoided,
will result in death or serious injury.
WARNING
WARNING indicates a potentially hazardous, medium-risk situation which, if not
avoided, could result in death or serious injury.
CAUTION
CAUTION indicates a situation that may result in property damage if not avoided.
NOTE
NOTE indicates tips, recommendations and important information. The notes will facili-
tate work, provide more information on specific actions and help prevent additional
work due to incorrect processes.
CALL TO ACTION
This symbol denotes action steps that the user must perform.
ACTION RESULT
This symbol denotes the relevant results of actions and action sequences.
1.3 Other documents
In addition to this document, the following material can be found on the Internet at
www.turck.com:
■Data sheet
■EU declaration of conformity
1.4 Feedback about these instructions
We make every effort to ensure that these instructions are as informative and as clear as pos-
sible. If you have any suggestions for improving the design or if any information is missing from
the instructions, please send your suggestions to [e-mail].

6 Hans Turck GmbH & Co. KG | T [phone] | F [phone] | [e-mail] | www.turck.com
Information About the Product
2 Information About the Product
2.1 Product identication
NOTE
■Designs with manufacturer-compatible connectors as well as models with customer-
specific blind zones are available on request.
■The preferred types are the LTX…M-F10-LI0-X3-H1151 devices.
2.2 Scope of delivery
The following are included in the scope of delivery:
■Linear position sensor (without positioning element)
■Quick Start Guide
2.3 Legal requirements
The device is subject to the following EU directives:
■2014/30/EU (electromagnetic compatibility)
LTX 100 M Magnetostrictive
position sensor –
Unit
MMillimeter
EInch
Measuring range
100 from 25 to 7600 mm
or 1 to 300"
Operating principle
LTX Linear position sensor
F10 Design –
Design
F10 Flat face, rod Ø 10.3 mm, sensor
head made from aluminum*
R10 Raised face, rod Ø 10.3 mm,
sensor head made from
aluminum
EF10 Flat face, rod Ø 10.3 mm, sensor
head made from stainless
ER10 Raised face, rod Ø 10.3 mm,
sensor head made from
stainless steel
H1 1 5 1 Electrical connection:
Male
Assignment
1Standard assignment
Number of contacts
55-pin
Connector type
1straight
Connector type
H1 Male connector M12 × 1
* Preference type
LTX 100 M – F10 – LI0 – X3 – H1 1 5 1
LI0 – X3 Electrical version –
Number of LEDs
X3 3-color LED
Output type
LI0 4…20 mA*
LI1 20…4 mA
LU0 0…10 V
LU1 10…0 V
LU2 -10…10 V
LU3 10…-10 V
LU4 0…5 V
LU5 5…0 V
LU6 -5…5 V
LU7 5…-5 V

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2.4 Manufacturer and service
Turck provides you with support and assistance for your projects — from the initial analysis to
commissioning your application. The Turck product database contains software tools for pro-
gramming, configuration and commissioning, as well as data sheets and CAD files in numerous
export formats. You can access the product database at the following address:
www.turck.de/products/
Should you have any further questions, please contact the sales and service team in Germany
on the following telephone numbers:
Sales: [phone]
Technology: [phone]
Outside Germany, please contact your Turck representative.
Hans Turck GmbH & Co. KG
Witzlebenstraße 7
45472 Mülheim an der Ruhr
Germany
3 For your Safety
The product is designed in accordance with the latest standards. However, residual risks still
exist. Observe the following warnings and safety information to prevent personal injury or
damage to property. Turck accepts no liability for damage caused by failure to observe these
warning and safety instructions.
3.1 Intended use
The devices are intended solely for use in industrial areas.
The magnetostrictive linear position sensors are used for contactless and wear-free linear posi-
tion detection. The devices are suitable for use in hydraulic cylinders. By adding float magnets
(available as an option), the devices can also be used for level measurement. The measuring
range is adjustable.
The devices must be used only as described in these instructions. Any other use is not in accor-
dance with the intended use. Turck accepts no liability for any resulting damage.
3.2 General safety information
■The devices are not safety components and must not be used for personal or property
protection.
■The device must be mounted, installed, operated, parameterized and maintained only by
trained and qualified personnel.
■The device complies exclusively with the EMC requirements for industrial applications and is
not suitable for use in residential areas.

8 Hans Turck GmbH & Co. KG | T [phone] | F [phone] | [e-mail] | www.turck.com
Product Description
4 Product Description
The linear position sensors with an analog output are available with a current or voltage output.
An M12 connector is available for the connection. All devices feature a rod design with IP68
protection. The devices operate without contact, which requires the use of a positioning ele-
ment approved by Turck (see Accessories). The measuring range is adjustable.
The devices operate on an absolute basis; power outages do not necessitate renewed zero off-
set adjustment or recalibration. All position values are determined as absolute values; reference
runs after a voltage drop are unnecessary.
4.1 Device overview
Fig. 1: Device dimensions of LTX…M… with standard blind zones (in mm)
4.1.1 Display elements
Each device has a 3-color LED for indicating the operating state and for diagnostics (see 8.1 LED
display).
4.2 Properties and features
■Analog output
■Adjustable measuring range with adjustment protection
■Automatic signal control
■7…30 VDC supply voltage
■Low power consumption
■High shock and vibration resistance
■Protection class IP68
■16-bit resolution
■Status display via 3-color LED
■Sensor and pressure pipe can be replaced separately
■M12 connector
24
44.5
ø 44.5
ø 10.3
10
M18 x 1.5 x 25
M12 x 1
81.3
L
63.5
Blind zone
50.8
Blind zone
Measuring
range

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4.3 Operating principle
Turck LTX sensors utilize the magnetostrictive principle. A "waveguide" is located in the measur-
ing probe of the linear position sensor. If a current signal generated at the waveguide encoun-
ters the externally applied magnetic field of the positioning element, mechanical feedback is
produced in the waveguide. This feedback is evaluated in the sensor head and output as posi-
tion information.
4.4 Functions and operating modes
The devices feature a current or voltage output. The device output provides a current or voltage
signal proportional to the position of the positioning element (see output characteristics).
A
4
B
AB
I [mA]
20
A
U [V]
0
B
AB
10
Fig. 2: Output characteristics – devices with
4…20 mA current output
Fig. 3: Output characteristics – devices with
0…10V voltage output
4.4.1 Automatic signal control
The device is automatically adjusted to the signal strength of the positioning element as soon
as the sensor is supplied with power. The automatic signal control fully compensates for any
tolerances.
4.4.2 Current output
LTX…LI… devices feature a current output, which outputs a current signal in line with the posi-
tion of the positioning element (e.g. 4…20 mA, depending on design). The measuring range is
adjustable.
4.4.3 Voltage output
LTX…LU… devices feature a voltage output, which outputs a voltage signal in line with the
position of the positioning element (e.g. 0…10V, depending on design). The measuring range
is adjustable.
4.4.4 Preferred types LTX…M-F10-LI0-X3-H1151 – Measuring range
Preferred types LTX…M-F10-LI0-X3-H1151 are available with the following measuring lengths
as standard:
Measuring range congured
100…500mm in 25mm increments
500…2000mm in 50mm increments
2000…7600mm in 500mm increments

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Product Description
4.5 Technical accessories
The following accessories are not supplied with the device:
Dimension drawing Type Ident no. Description
Positioning element
ø 32,8
ø 23,8
ø 4,7
ø 13,5
16,8
7,9
STM-AL-R10 6900409 Standard 4-hole positioning element, alu-
minum, suitable for mounting in hydraulic
cylinders
ø 25,4
7,9
ø 13,5
CM-R10 6900416 Standard positioning element, suitable for
mounting in hydraulic cylinders










LSPM-AL-R10 6900414 Ring-type positioning element with slot,
aluminum, can be used for external mount-
ing with mounting clamp RB-R10
50,8
ø 14,1
ø 50,8
max.
ø 52,1
EF-R10 6900417 Float-positioning element, stainless steel,
specific weight 0.62 kg/m³, for external
mounting for level monitoring
Spacer
ø 32,8
ø 23,8
ø 4,7
ø 13,5
16,8
6,4
STS-R10 6900411 Standard spacer produced from non-ferritic
material for separating the positioning ele-
ment from the ferritic base of the hydraulic
piston rod, suitable for installation in hydrau-
lic cylinders

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Dimension drawing Type Ident no. Description
Accessories for external mounting
#6-32
ø 7,1
31,7
23,8
50,8
76,2
25,4
15,7
50,8
ø 14,2 MMB-R10 6900004 Mounting clamp for positioning element, for
external mounting, with screws and standard
STS-R10 spacer
50,8
19,3
12,7
ø 12,2
ø 10,5
50,8
26,2
ø 7,1
ø 7,1
31,7
50,8
76,2
25,4
15,7
50,8
ø 19,5 MB-R10 6900419 Mounting clamp for sensor head and rod, for
external mounting, with screws
50,8
19,3
12,7
ø 12,2
ø 10,5
50,8
26,2
ø 7,1
RB-R10 6900420 Mounting clamp for rod, for external mount-
ing, with screws
Teach adapter
RP-Q21 6900005 Teach adapter to adjust the measuring range
Fieldbus accessories
132
144.3
32
32
C1C2C3C4
24
17.9
28
X2
X1
P2
P1
ø 4.6
TBEN-S2-4AI 6814025 Compact multiprotocol I/O module for Eth-
ernet (EtherNet/IP, Modbus TCP or PROFINET
slave) with 4 analog inputs
42
11.5
ø 15
M12 x 1
L
M12 x 1ø 15
49.5
18.2
RKC4T-2-
RSC4.301T/
TXL320
6630836 2m adapter cable, 3-pin, PUR, for direct con-
nection of the sensor to the block I/O module
TBEN-S2-4AI, required module parameter
setting: common ground (asymmetrical)

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Product Description
Dimension drawing Type Ident no. Description
Connection cable accessories
45.4
ø 15
M12 x 1 14
L
50
5
RKS4.5T-2/TXL 6626373 2 m connection cable, M12 female connector,
5-pin, PUR, shielded
45.4
ø 15
M12 x 1 14
L
50
5
RKS4T-2/TXL 6626293 2 m connection cable, M12 female connector,
3-pin, PUR, shielded
In addition to the connection cables listed, Turck also offers additional versions for specific
applications with suitable connections for the sensor. Further information can be found in the
Connectivity section of the Turck product database at https://pdb2.turck.de/en/DE/groups/.

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5 Mounting
The device can be mounted in a hydraulic cylinder or externally with a mounting bracket.
CAUTION
Incorrect mounting
Risk of damage to the sensor
 Secure the device in place using only the hexagon nut on the sensor head (max.
tightening torque: 50Nm).
 Do not fasten by turning the sensor head itself.
 Ensure that the positioning element is guided centrally over the pressure pipe along
the entire measuring length (deviation < 0.5mm).
Fig. 4: Side view of LTX-R10 with dimensions in mm [in] (design with raised face)
Fig. 5: Design with flat face (F10) – Housing nut with thread,
dimensions in mm [in]
Fig. 6: Design with raised face (R10) – Housing nut with thread,
dimensions in mm [in]
81.3 [3.20]
2.5 [.10]
7.1 [.28]
ø 25.4 [1.00]
ø 44.5 [1.75]
7.9
[.31]
ø 10.3 [.405]
32.8 [1.28]
M12 x 1 3-color LED
LTX…M: M18x1.5-6gx25mm thread
w/jam nut
LTX…E: 3/4-16x1.00 thread
w/jam nut
Viton O-ring
for 1/2“ dia
tube boss seal
Span 63.5 [2.50] Dead band
50.8 [2.00] Null
Standard 4-hole positioning element
(STM-AL-R10)
9.6
[.38]
2.5 [.10]
7.1 [.28]
ø 25.4 [1.00]

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Mounting
5.1 Mounting the device in a hydraulic cylinder
CAUTION
Incorrect mounting
Risk of damage to the hydraulic cylinder
 Observe the instructions from the cylinder manufacturer and the hydraulic cylinder
specifications.
The devices can be mounted directly in a hydraulic cylinder. To do so, the cylinder piston rod
must have a bore hole with a recommended diameter of 13.5mm (depending on the cylinder
design). To fasten the device, the end cap of the hydraulic cylinder must have an M18×1.5
threaded bore in accordance with ISO 6149-1.
5.1.1 Mounting the sensor
 Loosen and remove the hexagon nut on the sensor from the thread on the sensor head.
 Ensure that the pressure seal O-ring is located on the sensor head.
 Mount the non-ferrite spacer between the positioning element and base of the piston rod.
 Mount the positioning element. Observe a minimum distance of 51mm between the posi-
tioning element and sensor head with the piston rod in the retracted position. If the mini-
mum distance cannot be observed, sink the positioning element in the cylinder piston.
 Recommended for sensors with measuring probe lengths ≥ 1500mm: use protecting ring,
e.g. made of polymer (see Fig. 7, no. 2). The protecting ring prevents mechanical wear of posi-
tioning elements by the pressure pipe when the piston is fully extended.
 Fasten the positioning element and spacer with non-ferrite screws.
 Remove protective cap on the hydraulic cylinder (if present). The bore hole in the cylinder
piston rod should have a minimum diameter of 13.5mm.
 Insert the sensor pressure pipe into the cylinder piston.
 Screw the sensor into the M18×1.5 threaded bore of the hydraulic cylinder using the thread
of the sensor head (max. tightening torque: 50Nm).
23
4
5
1
1 Viton O-ring
2 Protecting ring
(optional)
3 4-hole positioning
element
4 Spacer for positioning
element
5 13.5mm bore hole in
the cylinder piston rod
Fig. 7: Mounting the device in a hydraulic cylinder

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5.2 Fastening the device externally with a mounting bracket
CAUTION
Magnetization of metal in close proximity with the measuring probe
Inaccurate measurements
 Mount the sensor measuring probe at least 7mm away from ferromagnetic material.
NOTE
Non-ferrous materials, such as brass, copper, aluminum, demagnetized stainless steel
or plastic do not impair the function of the sensor.
 Loosen the hexagon nut on the thread of the sensor head.
 Guide the mounting bracket over the pressure pipe up to the sensor head.
 If the mounting bracket has an M18×1.5 threaded hole, screw the sensor directly.
 Fasten the mounting bracket.
 Re-fasten the hexagon nut on the sensor head.
Fig. 8: Mounting the device with mounting brackets (dimensions in mm)
MB-R10
MMB-R10
RB-R10
ø 7.1 [0.28]
32 [1.26]
25.4 [1.00]
7 × 26
[0.28 × 1.02]
11 [0.43]
50.8
[2.00]
50.8
[2.00]

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Mounting
5.2.1 Fitting additional mounting elements (for external mounting)
On devices over 750mm in length, additional mounting elements (RB-R10) increase protection
against mechanical stresses such as impacts and vibrations. The mounting elements must be
made from non-ferrite material.
 When using additional mounting elements, use a positioning element with a slot.
 Fit mounting elements made from ferromagnetic (already magnetized) material at least 7mm
away from both the blind zone and the active measuring range of the sensor.
 Sensors with measuring probe lengths of 750…1800mm: Fit additional mounting elements
as per Fig. 9.
 Sensors with measuring probe lengths > 1800mm: Fit mounting elements at distances of
1200mm.
5.2.2 Mounting positioning elements (for external mounting)
 Maintain a distance of 7mm between the positioning element and ferrite material. Use a
spacer if necessary.
 Maintain a distance of 7mm between the end of the measuring probe and ferrite material.
The positioning element must not touch the sensor along the entire measuring range.
 When using positioning elements with a slot: Observe ≤ 5mm distance between the posi-
tioning element and measuring probe (nominal distance: 1.5mm).
 Push the positioning element into the active measuring range of the sensor.
 Fasten the positioning element with non-ferrite screws.
50.831.8
25.4
11
7.1
25.4
26.2
16.9
36
25.4
15.7
ø 7.1 (2x)
31.8
50.8
50.8
50.8
ø 7.1 (2x)
1
2
34
6
Dead bandStrokeNull
1 Sensor
2 Mounting element for
sensor head
3 4-hole positioning ele-
ment (aluminum)
4 Spacer for positioning
element
5 Mounting element for
positioning element
6 Mounting element for
measuring probe
Fig. 9: Mounting the positioning element (dimensions in mm)

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6 Connection
CAUTION
Couplings on the sensor cable
Sensor fault
 Do not route sensor cables close to high-voltage power supplies.
NOTE
 Keep the length of the connection cables as short as possible.
 Use shielded connection cables.
 Keep sensor cables away from the high-power AC cables and motor drive cables.
 Do not connect or disconnect the sensor when energized.
 Route high-voltage and low-voltage cables separately.
 Connect the female connector of the connection cable to the connector on the device.
 If the higher-level input is a differential (symmetrical) input, connect the sensor to the higher
level as per Fig. 10.
 If the higher-level input is a common ground (asymmetrical) input, connect the sensor to the
higher level as per Fig. 11.
NOTE
 Keep pin 2 potential-free during operation in order to prevent any accidental teach-
in operations.
6.1 Wiring diagram
NOTE
The following figures detail the usual wire colors. In exceptional cases, this color as-
signment may differ.
Pin Pin assignment Wiring diagram
Pin 1 (BN) UB
3
2
4
1
5 –
I/U
1 BN
2 WH progr. input
4 BK
3 BU
5 GY
+
Pin 2 (WH) Teach
Pin 3 (BU) GND
Pin 4 (BK) I/U
Pin 5 (GY) Position common
Fig. 10: Wiring diagram – higher-level input is differential (symmetrical)
Pin Pin assignment Wiring diagram
Pin 1 (BN) UB
3
2
4
1
5 –
I/U
1 BN
2 WH progr. input
4 BK
3 BU
5 n.c.
+
Pin 2 (WH) Teach
Pin 3 (BU) GND
Pin 4 (BK) I/U
Pin 5 (GY) Position common
Fig. 11: Wiring diagram – higher-level input is common ground (asymmetrical)

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Commissioning
7 Commissioning
Once the cables and the supply voltage are connected, the device automatically goes into
operation. To ensure the correct calibration of the automatic signal control, the positioning ele-
ment must be located in the active measuring range of the sensor when the supply voltage is
connected.
8 Operation
8.1 LED display
Color/status Meaning
Off No power supply present
Constant green light Positioning element signal detected within taught range
Constant yellow light Positioning element signal detected outside taught range
Constant red light No positioning element signal detected
Proceed as follows if no magnetic signal is detected (red LED lit):
 Place the positioning element in the active measuring range of the device.
 Reset the voltage.
 The device is automatically adjusted to the signal strength of the positioning element.
8.2 Diagnostics
The LTX with an analog output (4…20 mA) has a diagnostic feedback function. The 4…20 mA
range makes it possible to locate the position of the positioning element in the set measuring
range. If the positioning element is outside of the set measuring range, the analog output sup-
plies the following values:
■3.8 mA: Positioning element is located in the blind zone or no positioning element detected
■3.9 mA or 20.1 mA: Positioning element is located outside of the set measuring range

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9 Setting
The devices have an adjustable analog output. The measuring range can be set by manual
bridging or with the RP-Q21 teach adapter. The zero point and end point of the measuring
range can be set in succession or independently of one another.
9.1 Setting via manual bridging
 Supply the device with voltage.
 Place positioning element at the zero point of the measuring range.
 Bridge pin 2 and pin 3 for 4 s.
 Interrupt bridge between pin 2 and pin 3 for 1 s.
 Sensor starts teach mode.
 Bridge pin 2 and pin 3 within 5 s.
 Zero point of measuring range is stored.
 Place positioning element at end point of the measuring range.
 Bridge pin 2 and pin 3 for 4 s.
 Sensor starts teach mode.
 Interrupt bridge between pin 2 and pin 3 for 1 s.
 Bridge pin 1 and pin 2 within 5 s.
 End point of measuring range is stored.
9.2 Setting via teach adapter RP-Q21
 Connect the sensor to the teach adapter.
 Place positioning element at the zero point of the measuring range.
 Press the Zero button of the teach adapter for 4 s.
 Release the Zero button of the teach adapter for 1 s.
 Sensor starts teach mode.
 Press the Zero button of the teach adapter again within 5 s.
 Zero point of measuring range is stored.
 Place positioning element at end point of the measuring range.
 Press the Zero button of the teach adapter for 4 s.
 Release the Zero button of the teach adapter for 1 s.
 Sensor starts teach mode.
 Press the Span button of the teach adapter again within 5 s.
 End point of measuring range is stored.
10 Troubleshooting
If the device does not function as expected, check the LED feedback (see section "LED display").
Check whether there is any ambient interference. If there is no ambient interference, check the
connections of the device for faults.
If no faults are identified, it indicates that the device is faulty. In this case, decommission the
device and replace it with a new device of the same type.

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Maintenance
10.1 Replacing the sensor head and measuring element
WARNING
Overpressure at the sensor head
Risk of injury through uncontrolled ejection of sensor head
 In pressurized systems, ensure that the pressure pipe is undamaged and
pressure-proof.
NOTE
The system does not have to be depressurized for a fluid cylinder application.
The sensor head and measuring element can be replaced independently of the pressure pipe.
 Loosen the screws on the sensor head.
 Pull the sensor and measuring element out of the housing together as one piece. The end
caps are not separately screwed to the sensor head.
 Insert a new sensor head and measuring element into the housing.
 Secure the screws, e.g. with Loctite 243.
 Fasten the screws on the sensor head (max. tightening torque < 1 Nm).
Fig. 12: Replacing the sensor head and measuring element
11 Maintenance
Ensure that the plug connections and connection cables are always in good condition. The
devices are maintenance-free; clean using dry materials as required.
PH2
Positioning element
Spacer