Turck LTX Series Manuale utente

Your Global Automation Partner

Operating instructions

LTX

Linear Position Sensors

with SSI Interface

Hans Turck GmbH & Co. KG | T +49 208 4952-0 | F +49 208 4952-264 | more@turck.com | www.turck.com

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Contents

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

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Contents

Hans Turck GmbH & Co. KG | T +49 208 4952-0 | F +49 208 4952-264 | more@turck.com | www.turck.com

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].

Hans Turck GmbH & Co. KG | T +49 208 4952-0 | F +49 208 4952-264 | more@turck.com | 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

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: +49 208 4952-380

Technology: +49 208 4952-390

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.

Hans Turck GmbH & Co. KG | T +49 208 4952-0 | F +49 208 4952-264 | more@turck.com | 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).

44.5

ø 44.5

ø 10.3

M18 x 1.5 x 25

M12 x 1

81.3

63.5

Blind zone

50.8

Blind zone

Measuring

range

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

Hans Turck GmbH & Co. KG | T +49 208 4952-0 | F +49 208 4952-264 | more@turck.com | 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

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