Balluff BTL5-T1 M P-S103 Series Bedienungsanleitung

User’s Guide

english

BTL5-T1 __ -M ____ -P-S103

www.balluff.com

www.balluff.com 3english

BTL5-T1__-M____-P-S103

Magnetostrictive Linear Position Sensor – Profile Style

1 Notes to the user 5

1.1 Validity 5

1.2 Symbols and conventions 5

1.3 Scope of delivery 5

1.4 Software 5

1.5 Approvals and markings 5

2 Safety 6

2.1 Intended use 6

2.2 General safety notes 6

2.3 Explanation of the warnings 6

2.4 Disposal 6

3 Construction and function 7

3.1 Construction 7

3.2 Function 7

3.3 Number of magnets 7

4 Installation and connection 8

4.1 Installing the BTL 8

4.2 Captive magnets 8

4.3 Floating magnets 9

4.4 Shielding and cable routing 10

4.5 Electrical Connection 11

4.5.1 Connecting the supply voltage, control and data signals 11

4.5.2 Connection example 11

5 Startup 12

5.1 Starting up the system 12

5.2 Operating notes 12

5.3 Default setting 12

5.4 Presettings 12

5.4.1 Station address 13

5.4.2 Bus termination 13

5.4.3 LED display for Proﬁbus encoder proﬁle 13

6 Technical data 14

6.1 Accuracy 14

6.2 Ambient conditions 14

6.3 Supply voltage (external) 14

6.4 Control signals 14

6.5 Magnet 14

6.6 Dimensions, weights 14

6.7 Connection to the evaluation unit 14

4english

BTL5-T1__-M____-P-S103

Magnetostrictive Linear Position Sensor – Profile Style

7 Accessories 15

7.1 Captive magnets 15

7.2 BTL2-GS10-_ _ _ _-A joint rod 15

7.3 Floating magnets 16

7.4 Connectors and cables 17

7.4.1 Connector, freely conﬁgurable 17

7.4.2 Connector, preassembled 17

7.4.3 Connecting cable, preassembled 18

7.4.4 Bus termination resistance, freely conﬁgurable 18

7.4.5 Transparent cover 18

7.4.6 Screw plugs 18

8 Type code 19

9 Appendix 20

9.1 Converting units of length 20

9.2 Part label 20

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1.1 Validity

This guide describes the construction, function and setup

options for the BTL magnetostrictive linear position sensor

with Profibus DP interface. It applies to models

BTL5-T1__-M____-P-S103 (see Type code on

page19).

The guide is intended for qualified technical personnel.

Read this guide before installing and operating the BTL.

1.2 Symbols and conventions

Individual actions are indicated by a preceding triangle.

►Instruction 1

Action sequences are numbered consecutively:

1. Instruction 1

2. Instruction 2

Note, tip

This symbol indicates general notes.

1.3 Scope of delivery

– BTL

– Mounting clamps with insulating sleeves and screws

– Condensed guide

The magnets are available in various models

and must be ordered separately.

1.4 Software

GSD file via download on the Internet at

www.balluff.com or e-mail to service@balluff.de.

1.5 Approvals and markings

UL approval

File No.

E227256

US Patent 5923164

The US patent was awarded in connection with this

product.

The CE Mark verifies that our products

meet the requirements of the current

EMC Directive.

The BTL meets the requirements of the following product

standard:

– EN61326-2-3 (noise immunity and emission)

Emission tests:

– RF emission EN55011

Noise immunity tests:

– Static electricity (ESD)

EN61000-4-2 Severity level 3

– Electromagnetic fields (RFI)

EN61000-4-3 Severity level 3

– Electrical fast transients (burst)

EN61000-4-4 Severity level 3

– Surge

EN61000-4-5 Severity level 2

– Conducted interference induced by

high-frequency fields

EN61000-4-6 Severity level 3

– Magnetic fields

EN61000-4-8 Severity level 4

More detailed information on the guidelines,

approvals, and standards is included in the

declaration of conformity.

1 Notes to the user

BTL5-T1__-M____-P-S103

Magnetostrictive Linear Position Sensor – Profile Style

6english

2.1 Intended use

The BTL magnetostrictive linear position sensor, together

with a Profibus master (e.g. PLC), comprises a position

measuring system. It is intended to be installed into a

machine or system and used in the industrial sector.

Flawless function in accordance with the specifications in

the technical data is ensured only when using original

Balluff accessories. Use of any other components will void

the warranty.

Opening the BTL or non-approved use are not permitted

and will result in the loss of warranty and liability claims

against the manufacturer.

2.2 General safety notes

Installation and startup may only be performed by

trained specialists with basic electrical knowledge.

Qualified personnel are persons whose technical

training, knowledge and experience as well as knowledge

of the relevant regulations allows him to assess the work

assigned to him, recognize possible hazards and take

appropriate safety measures.

The operator is responsible for ensuring that local safety

regulations are observed.

In particular, the operator must take steps to ensure that a

defect in the BTL will not result in hazards to persons or

equipment.

If defects and unresolvable faults occur in the BTL, take it

out of service and secure against unauthorized use.

2.3 Explanation of the warnings

Always observe the warnings in these instructions and the

measures described to avoid hazards.

The warnings used here contain various signal words and

are structured as follows:

SIGNAL WORD

Type and source of the hazard

Consequences if not complied with

►Measures to avoid hazards

The individual signal words mean:

NOTICE

Identifies a danger that could damage or destroy the

product.

DANGER

The general warning symbol in conjunction with the

signal word DANGER identifies a hazard which, if not

avoided, will certainly result in death or serious injury.

2.4 Disposal

►Observe the national regulations for disposal.

2 Safety

BTL5-T1__-M____-P-S103

Magnetostrictive Linear Position Sensor – Profile Style

www.balluff.com 7english

1) Unusable area

2) Not included in scope of delivery

3) Groove on the top side of the profile marks the start of

measuring range

1) Nominal length =

measuring range

BTL5-P-3800-2

magnet

Mounting clamps with insulating bushes and

ISO4762M5x22 cylinder head screws, max.

tightening torque 2Nm

Null point

Groove

End point

Fig. 3-1: BTL5…, construction

3 Construction and function

The component of the torsional wave which arrives at the

end of the waveguide is absorbed in the damping zone to

prevent reflection. The wave generated at position of the

magnet returns to the head end of the BTL where a coil

converts the wave into an electrical signal. The travel time

of the wave is used to calculate the position at a resolution

of 5µm. This is done with high precision and reproducibility

within the measuring range designated as the rated length.

The electrical connection between the BTL, evaluation

unit/controller, and power supply is established via several

cables that are connected via connectors.

3.3 Number of magnets

Up to 4 magnets can be used. The distance (L) between

the magnets must be at least 65mm.

Fig. 3-2:

L L L

Distance between the magnets

3.1 Construction

Electrical connection: The electrical connection is made

via a cable (see Type code on page19).

Housing: Stainless steel housing containing the

processing electronics.

Magnet: Defines the position to be measured on the

waveguide. Magnets are available in various models and

must be ordered separately (see Accessories on

page15).

Nominal length: To optimally adapt the BTL to the

application, nominal lengths from 50mm to 4000mm are

available.

3.2 Function

The BTL contains the waveguide which is protected by an

aluminum housing. A magnet is moved along the

waveguide. This magnet is connected to the system part

whose position is to be determined.

The magnet defines the position to be measured on the

waveguide.

An internally generated INIT pulse interacts with the

magnetic field of the magnet to generate a torsional wave

in the waveguide which propagates at ultrasonic velocity.

BTL5-T1__-M____-P-S103

Magnetostrictive Linear Position Sensor – Profile Style

8english

4.1 Installing the BTL

NOTICE

Improper installation

Improper installation can compromise the function of the

transducer and result in damage.

►Ensure that no strong electrical or magnetic ﬁelds are

present in the direct vicinity of the BTL.

►Be sure to maintain the speciﬁed distances and

separations.

Any orientation is permitted. Mount the BTL on a level

surface of the machine using the provided mounting

clamps and cylinder-head screws. A sufficient number of

mounting clamps is supplied.

In order to avoid the development of resonant

frequencies from vibration loads, we

recommend arranging the mounting clamps at

irregular intervals.

The BTL is electrically isolated from the machine with the

supplied insulating bushes (see Fig. 3-1).

1. Guide the BTL into the mounting clamps.

2. Attach the BTL to the base using mounting screws

(tighten screws in the clamps with max.2Nm).

3. Installing magnet (accessory). When using multiple

magnets see chapter3.3.

The BTL in profile housing is suitable both for

floating, i.e. non-contacting magnets (see

Fig. 4-4 to Fig. 4-8) and for captive magnets

(see Fig. 4-1 to Fig. 4-3).

4 Installation and connection

4.2 Captive magnets

Note when installing the magnet:

– Avoid lateral forces.

– Connect the magnet to the machine member with a

joint rod (see Accessories on page15).

Fig. 4-1:

66.4

Dimensions and spacing with magnet BTL5-F-2814-1S

Fig. 4-2:

52.5

47.5

Dimensions and spacing with magnet BTL5-T-2814-1S

Fig. 4-3:

Dimensions and spacing with magnet BTL5-M/N-2814-1S

BTL5-M-2814-1S BTL5-N-2814-1S

Distance X 48.5mm 57mm

Distance Y 51mm 59.5mm

Tab. 4-1: Distances with BTL5-M/N-2814-1S magnet

BTL5-T1__-M____-P-S103

Magnetostrictive Linear Position Sensor – Profile Style

www.balluff.com 9english

4Installation and connection (continued)

4.3 Floating magnets

Note when installing the magnet:

– To ensure the accuracy of the linear position sensor,

the magnet is attached to the moving member of the

machine using non-magnetizable screws (stainless

steel, brass, aluminum).

– The moving member must guide the magnet on a

parallel line to the BTL.

– Distance A between the magnet and parts made of

magnetizable material must be kept to at least 10 mm

(see Fig. 4-4 to Fig. 4-8).

– For distance B between the magnet and the BTL and

for the center offset C (see Fig. 4-4 to Fig. 4-8) the

following values must be maintained:

Magnet type Distance

B1)

Offset C

BTL5-P-3800-2 0.1…4mm ±2mm

BTL5-P-5500-2 5…15mm ±15mm

BTL5-P-4500-1 0.1…2mm ±2mm

BTL6-A-3800-2 4…8mm2) ±5mm

BTL6-A-3801-2 4…8mm2) ±5mm

1) The selected distance must remain constant over the entire stroke length.

2) For optimal measuring results a distance B of 6…8mm is recommended.

Tab. 4-2: Distance and offset for floating magnets

Fig. 4-4:

50+4

55+4

Dimensions and spacing with magnet BTL5-P-3800-2

Fig. 4-5:

61+10

66+10

Dimensions and spacing with magnet BTL5-P-5500-2

Fig. 4-6:

74+4

69+4

Dimensions and spacing with magnet BTL6-A-3800-2

Fig. 4-7:

63+4

58+4

Dimensions and spacing with magnet BTL6-A-3801-2

Fig. 4-8:

81+2

57.5+2

Dimensions and spacing with BTL5-P-4500-1 electroma-

gnet (24V/100mA)

The measuring range is offset by 4mm towards

the BTL plug (see Fig. 4-8).

BTL5-T1__-M____-P-S103

Magnetostrictive Linear Position Sensor – Profile Style

10 english

4Installation and connection (continued)

4.4 Shielding and cable routing

Defined ground!

The BTL and the control cabinet must be at the

same ground potential.

Shielding

To ensure electromagnetic compatibility (EMC), observe

the following:

– Connect BTL and controller using a shielded cable.

Shielding: Braided copper shield with minimum 85%

coverage.

– Shield is internally connected to connector housing.

Magnetic fields

The position measuring system is a magnetostrictive

system. Ensure that there is sufficient distance between

the BTL and the strong, external magnetic fields.

Cable routing

The Profibus bus line must be routed according to Techni-

cal Guideline 2.111, Installation Guidelines for Profibus-DP/

FMS.

Do not route the cable between the BTL, controller, and

power supply near high voltage cables (inductive stray

noise is possible).

The cable must be routed tension-free.

Inductive stray noise from AC harmonics (e.g. from phase

angle controls) are especially critical and the cable shield

offers very little protection against this.

The signal is transmitted to the controller via the Profibus

DP interface.

Cable twisted in pairs, shielded.

Maximum length of the entire field bus cable: 1200 m

The transfer rate depends on the length of the cable. In

accordance with EN50170, the values named in Tab. 4-3

apply.

Cable length Baud rate [kbit/s]

< 100 m 12000

<200 m 1500

<400 m 500

< 1000 m 187.5

<1200 m 93.7/19.2/9.6

Tab. 4-3: Baud rate depending on cable length

The bus must be terminated at both ends in accordance

with EN50170 (see Fig. 4-10).

The BTL can be assigned a station address via

DIP switches. In addition, the BTL can internally

terminate the bus via DIP switches. For further

information see chapter Presettings on

page12.

Noise elimination

To avoid equipotential bonding (current flow) through the

cable shield, please note the following:

– Use insulating bushes.

– Put the control cabinet and the system in which the

BTL is located to the same ground potential.

BTL5-T1__-M____-P-S103

Magnetostrictive Linear Position Sensor – Profile Style

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