turck LTX Series User manual

Your Global Automation Partner
Operating instructions
LTX
Linear Position Sensors
with SSI Interface

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

3
2017/09
1 About these Instructions 5
1.1 Target Groups 5
1.2 Explanation of Symbols 5
1.3 Other Documents 5
1.4 Feedback on these Instructions 5
2 Notes on the Product 6
2.1 Product Identication 6
2.2 Scope of Delivery 6
2.3 Legal Requirements 7
2.4 Manufacturer and Service 7
3 For Your Safety 7
3.1 Intended Use 7
3.2 General Safety Instructions 7
4 Product Description 8
4.1 Device Overview 8
4.1.1 Display Elements 8
4.2 Properties and Characteristics 9
4.3 Functional Principle 9
4.4 Functions and Operating Modes 9
4.4.1 Automatic Signal Control 10
4.4.2 Update Mode 10
4.4.3 Measuring Functions 11
4.4.4 Preferred Type LTX…M-F10-SSI2-GAF1-X3-H1161 – Measuring Range 11
4.5 Technical Accessories 12
5 Mounting 14
5.1 Mounting the Device in a Hydraulic Cylinder 15
5.1.1 Mounting the Sensor 15
5.2 Fastening the Device Externally with Mounting Bracket 16
5.2.1 Mounting Additional Mounting Elements (for External Mounting) 17
5.2.2 Mounting Positioning Elements (for External Mounting) 17
6 Connection 18
6.1 Wiring Diagram 18
7 Commissioning 18
8 Operation 19
8.1 LED Display 19
9 Eliminating Interference 20
9.1 Replacing the Sensor Head and Measuring Element 20
10 Maintenance 20
11 Repair 20
11.1 Returning Devices 20
12 Disposal 20
13 Technical Data 21
13.1 Update Time 21

Contents

4
Hans Turck GmbH & Co. KG | T [phone] | F [phone] | [e-mail] | www.turck.com

5
2017/09
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 us-
ing the product. This is to avoid possible 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, pass on these instructions as well.
1.1 Target Groups
These instructions are aimed at qualified personnel and must be carefully read 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 situation with a high risk of death or seri-
ous injury if it is not prevented.
WARNING
WARNING indicates a potentially hazardous situation with a moderate risk of death or
severe injury if not prevented.
CAUTION
CAUTION indicates a situation that may result in damage to property if it is not
prevented.
NOTE
NOTE indicates tips, recommendations and important information. The notes make
work easier, contain information on specific action steps and help prevent unnecessary
work due to incorrect processes.
CALL TO ACTION
This symbol identifies steps that the user has to perform.
ACTION RESULT
This symbol identifies relevant results of actions and action sequences.
1.3 Other Documents
Besides this document, the following material can be found on the internet at www.turck.com:
■Data sheet
1.4 Feedback on these Instructions
We are committed to always keeping these instructions as informative and as clear as possible.
If you have any suggestions for improving the design or if some information is missing in the
document, please send your suggestions to t[email protected].

6
Hans Turck GmbH & Co. KG | T [phone] | F [phone] | [e-mail] | www.turck.com
Notes on the Product
2 Notes on the Product
2.1 Product Identication
NOTE
■Designs with manufacturer compatible connectors and models with enlarged blind
zones are available on request.
■Device LTX…M-F10-SSI2-GAF1-X3-H1161 is the preferred type.
2.2 Scope of Delivery
Included in the scope of delivery:
■Linear position sensor (without positioning element)
■Quick start guide
LTX 100 M Magnetostrictive
position sensor –
Unit
M Millimeter
Measuring range
100 from 25 to 7500 mm
Operating principle
LTX Linear position sensor
LTX 100 M – F10 – SSI 2 – G A F 1 – X3 – H1 1 6 1
F10 Design –
Design
F10 Flat face, rod Ø 10.3 mm,
aluminum*
R10 Raised face, rod Ø 10.3 mm,
aluminum
EF10 Flat face, rod Ø 10.3 mm,
stainless steel
ER10 Raised face, rod Ø 10.3 mm,
stainless steel
SSI 2 – G A F 1 – X3 Electrical version –
Number of LEDs
X3 3-color LED
Resolution
10.005 mm*
20.01 mm
30.05 mm
40.1 mm
50.02 mm
60.002 mm
70.001 mm
Direction
Fforward*
Rbackward
Vvelocity
Data type
Ssynchronous
Aasynchronous*
Data format
Bbinary
Ggray*
Data length
124 bit
225 bit*
326 bit
Data mode
H1161
Electrical connection:
Male
Assignment
1Standard assignment
Number of contacts
66-pin
Connector type
1straight
Connector type
H1 Male connector M12 x 1
* Preference type

7
2017/09
2.3 Legal Requirements
The device is subject to the following EU directives:
■2014/30/EU (electromagnetic compatibility)
■2011/65/EU (RoHS 2)
2.4 Manufacturer and Service
Turck supports you with your projects, from initial analysis to the commissioning of your ap-
plication. The Turck product database contains software tools for programming, configuration
or commissioning, data sheets and CAD files in numerous export formats. You can access the
product database at the following address: http://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 to 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
These devices are designed solely for use in industrial areas.
The magnetostrictive linear position sensors are used for contactless and wear-free linear
position detection. The devices are suitable for use in hydraulic cylinders. The devices can also
be used for level measurement through the use of float magnets (optionally available). The
measuring range is adjustable.
The devices must only be used as described in these instructions. Any other usage shall be con-
sidered improper and Turck shall not be held liable for any resulting damage.
3.2 General Safety Instructions
■The devices are not safety components and may not be used for personal or property
protection.
■The device must only be fitted, installed, operated, parameterized and maintained by trained
and qualified personnel.
■The device only meets the EMC requirements for industrial areas 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 SSI interface provide a serial synchronous interface output
signal (SSI) proportional to the position of the positioning element. Different device variants
enable the following measuring functions to be performed:
■Position measurement, measuring direction forwards
■Position measurement, measuring direction backwards
■Speed measurement
The devices can be connected via a M12 plug connector. All devices feature a rod design with
IP68 protection. The devices operate without contact, which requires the use of a positioning
element approved by Turck (see Accessories).
The devices operate in absolute mode; voltage failures do not require renewed zero point ad-
justment 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 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 fault diagnostics (see
8.1 LED display).
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

9
2017/09
4.2 Properties and Characteristics
■SSI output
■Automatic signal control
■7…30 VDC supply voltage
■Low power consumption
■High shock and vibration resistance
■Protection class IP68
■16 bit resolution
■Status displayed via 3-color LED
■Sensor and pressure pipe can be replaced separately
■Male connector M12
4.3 Functional Principle
Operation of the Turck LTX sensors is based on the magnetostrictive principle. A“waveguide”
is located in the measuring probe of the linear position sensor. If a current signal generated at
the waveguide encounters 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 position information.
4.4 Functions and Operating Modes
The devices have an SSI interface according to the RS422 standard. The process value is trans-
ferred via the interface either directly to the higher-level controller (with SSI card) or to a field-
bus device.
Fig. 2: Block diagram of the sensor control
The location of the positioning element on the sensor measuring probe is determined by
means of a propagation time measurement and transmitted to the controller via the SSI inter-
face. All position values are determined as absolute values; reference runs after a voltage drop
are unnecessary.
+7…30 V
0 V
SSI Clock (+)
SSI Clock (–)
SSI Data (+)
SSI Data (–)
Input
Power
Supply
SSI Shift Register and Controller
Output Data Format Conversion
SSI Logic Diagram
Position Measurement

10
Hans Turck GmbH & Co. KG | T [phone] | F [phone] | [e-mail] | www.turck.com
Product Description
New incoming position data is transferred via the data signal 605 ns after the rising edge of the
clock signal. This time frame, including the elapsed time caused by the length of the cable, must
be allowed for when defining the transmission rates.
Fig. 3: SSI pulse diagram: Bitwise transmission from most significant bit (MSB) to least signifi-
cant bit (LSB)
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 Update Mode
The devices can be operated in synchronous or asynchronous update mode. In asynchronous
mode, up to 2000 measurements (depending on length, see also the "Update time" section) can
be carried out per second to update the position values. In synchronous mode, the clock rate
for the update depends on the controller (max. 2000 measurements per second, depending on
length). In synchronous mode, if the controller queries the position data on the sensor faster
than the data is provided by the sensor, the sensor automatically switches to asynchronous
mode and continues to provide the latest position information to the controller.
NOTE
Turck recommends operating the device in asynchronous update mode, if no highly
dynamic control requirement is involved.
Fig. 4: Synchronous and asynchronous update mode
min. 16 µs
Clock (+)
Data (+)
Clock Interval
LSBMSB
SSI Clock
Synchronous
Asynchronous
Controller
Update
Internal
Repetition
Update
Position
Update
Position
Update
Position
Update
Position
Update
Position
Update
Position
Update
Position