Balluff BTL5-T1 M P-S103 Series User manual

User’s Guide
english
BTL5-T1 __ -M ____ -P-S103

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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 [e-mail].
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

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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

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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
1)
Mounting clamps with insulating bushes and
ISO4762M5x22 cylinder head screws, max.
tightening torque 2Nm
2)
3)
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

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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
60
1
Dimensions and spacing with magnet BTL5-F-2814-1S
Fig. 4-2:
52.5
47.5
1
Dimensions and spacing with magnet BTL5-T-2814-1S
Fig. 4-3:
Y
X
1
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

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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:
B
C
50+4
A A
55+4
1
Dimensions and spacing with magnet BTL5-P-3800-2
Fig. 4-5:
C
B
A
A
1
61+10
66+10
Dimensions and spacing with magnet BTL5-P-5500-2
Fig. 4-6:
C
B
A A
1
74+4
69+4
Dimensions and spacing with magnet BTL6-A-3800-2
Fig. 4-7:
C
B
A A
1
63+4
58+4
Dimensions and spacing with magnet BTL6-A-3801-2
Fig. 4-8:
B
A
A
C
4
1
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

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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