Solartron LE/12/SV User manual

linear encoders
with current or
voltage output
user manual
solartron
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1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2 Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Terms in this manual . . . . . . . . . . . . . . . . . . . . . . . .3
Symbols in this manual . . . . . . . . . . . . . . . . . . . . . .3
3 Designation of Parts . . . . . . . . . . . . . . . . . . . . . . .4
Items supplied . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
4 Handling and Maintenance . . . . . . . . . . . . . . . . . .5
5 Mechanical Installation . . . . . . . . . . . . . . . . . . . . .6
5.1 Clamping configurations . . . . . . . . . . . . . . . . .7
5.2 Replacing the probe tip . . . . . . . . . . . . . . . . . .8
6 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
6.1 Finger lift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
6.2 Cable lift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
6.3 Pneumatic operation . . . . . . . . . . . . . . . . . . . . .9
7 Electrical Interface . . . . . . . . . . . . . . . . . . . . . . . .10
7.1 Current probe . . . . . . . . . . . . . . . . . . . . . . . . .11
7.2 Voltage probe . . . . . . . . . . . . . . . . . . . . . . . . .12
8 Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
9 Outline Drawings . . . . . . . . . . . . . . . . . . . . . . . . . .14
IP65 and 1P50 versions . . . . . . . . . . . . . . . . . . . . .14
Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
10 Return of Goods . . . . . . . . . . . . . . . . . . . . . . . . . .16
Index
Index

Manual Part No. 502350 Issue 2
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Introduction
The LE12/25 Linear Encoder with current or voltage
output, when used with suitable interfacing electronics,
provide a precision linear measurement system. The
current version (designated I) provides industrial
standard current in-phase and quadrature-phase
signals. The voltage version (designated V) provides
equivalent voltage signals.
model no. LE/12/SV
LE/12/SI
LE/25/SV
LE/25/SI
LE/12/PV
LE/12/PI
LE/25/PV
LE/25/PI
Solartron also produce a digital version of the Linear
Encoders, which can be used with Solartron DRO’s or
the Orbit network to create measuring systems.
This Manual
Describes the Linear Encoder types LE12/25 both
pneumatic and spring versions with either current or
voltage output.
This manual details the handling, installation and
operation of the encoder and describes the electrical
interfaces.
1.0: Introduction
1.0: Introduction
Manual Part No. 502350 Issue 2
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Terms in this manual
WARNING statements identify conditions or
practices that could result in personal injury or loss
of life.
CAUTION statements identify conditions or practices
that could result in damage to the equipment or
other property.
Symbols in this manual
This symbol indicates where applicable
cautionary or other information is to be found.
WARNINGS:
Do not operate in an explosive atmosphere
To avoid explosion, do not operate this equipment in
an explosive atmosphere.
Air Pressure
On LE/12/P and LE/25/P variants under no
circumstances should the recommended maximum
overpressure of 1.0 bar be exceeded.
NOTES:
This equipment contains no user serviceable parts
This equipment must be returned to your Solartron
dealer for all servicing and repair (see section 10.0).
Low Voltage
This equipment operates at below the SELV and is
therefore outside the scope of the Low Voltage
Directive.
2.0: Safety Summary
2.0: Safety Summary
!
Manual Part No. 502350 Issue 2
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Items Supplied
Linear Encoder Probe in packaging case.
Standard tip (measuring contact) fitted.
Finger lift lever.
Locking tool.
Operating instructions.
Calibration chart.
Plus other accessories as ordered.
3.0: Designation of Parts
3.0: Designation of Parts
"
Manual Part No. 502350 Issue 2
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The Solartron range of Linear Encoders are precision
instruments and should be handled with care. Where
possible, the Linear Encoder should be stored in its
protective box when not being used.
These Linear Encoders are designed to be maintenance
free; additional periodic lubrication is unnecessary.
Contacts with solvents should be avoided. Any attempt
to dismantle the Linear Encoder will invalidate the
warranty.
4.0: Handling & Maintenance
4.0: Handling & Maintenance
#
Manual Part No. 502350 Issue 2
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Manual Part No. 502350 Issue 2
CAUTIONS
Ensure that the probe is not subjected to
excessive over-travel, or side loading at the tip
greater than that corresponding to a 0.5mm lift
on a Ø3 ball.
When mounting the Linear Encoder avoid the
risk of distortion of the bearing assembly by
over-tightening of the mounting screws around
the clamping shank.
Notes:
It is important to ensure that the probe is
perpendicular to the measuring table to avoid
introducing cosine errors.
Do not use excessive torque when tightening gauge
stand clamp screws (see next section).
Keep cable away from moving parts to avoid
potential damage.
Protect probe against shock loading or impact!
5.0: Mechanical Installation
5.0: Mechanical Installation
$
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5.1 Clamping Configurations
When mounting
Linear Encoder do
not over tighten
clamp screws.
Recommended maximum tightening torque
Where d = screw dia mm
P = screw pitch mm
assuming a ‘V’ form thread and 0.15 coefficient of
friction.
Note: A clearance hole in the fixturing of Ø9.5mm is
advisable around the gaiter for satisfactory
operation.
5.0: Mechanical Installation
5.0: Mechanical Installation (continued)
%
Manual Part No. 502350 Issue 2
0.28d (( ) + 0.15)
(1-(0.15 ))
Π
Π
P
P
d
d
=
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5.2 Replacing the probe tip
1. Slide back gaiter (fitted to IP65 and pneumatic
versions only) to reveal the hole in the shaft.
2. Insert locking tool (supplied) in the hole.
3. Unscrew tip while holding locking tool to prevent
any damage to the read head.
4. Install new tip while holding locking tool.
5. Torque tip to 18-22 cNm.
6. Slide down gaiter, (IP65 and pneumatic versions
only).
5.0: Handling & Maintenance
5.0: Mechanical Installation (continued)
&
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'
Manual Part No. 502350 Issue 2
6.1 Finger lift lever
Snaps over probe tip
enabling tip to be lifted
without transferring heat
to shaft.
6.2 Cable lift
Allows tip to be retracted
without touching Linear
Encoder. Cable retract
screws into probe body
after removal of blanking
screw.
6.3 Pneumatic operation
A Pneumatic nozzle is
fitted as standard to
LE/12/P & LE/25/P. By
applying air between 0.5
& 0.8 bar, measuring tip
will extend to meet
component under test.
On no account should a
pressure exceeding
1.0 bar be applied.
WARNING: Damage/injury could be caused if the
maximum recommended air pressure is exceeded.
CAUTION
Ensure that the air supply for pneumatic
operation is clean, dry and oil free.
6.0: Operation
6.0: Operation
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The Linear Encoder provides either a current output or a
voltage output corresponding to the format below. The
signals are differential. These signals are designed to
be compatible with industry standard electronics.
7.0: Electrical Interface
7.0: Electrical Interface

Manual Part No. 502350 Issue 2
Signals
In Phase
Quadrature Phase
Reference Mark
Current
7 - 16 uApp
7 - 16 uApp
5 uAp nominal
Voltage
0.6 to 1.2Vpp
0.6 to 1.2Vpp
0.5Vp nominal into
120 ohm load
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7.1 Current probe
Note: Connector housing is connected to cable screen
and therefore probe body.
7.0: Electrical Interface
7.0: Electrical Interface (continued)

Manual Part No. 502350 Issue 2
Pin Number Signal Description
1I1In Phase current +
2/I1In Phase current -
3+ 5 Vdc Probe power supply
40 Vdc Probe power return
5I2Quadrature phase current +
6/I2Quadrature phase current -
7I0Reference current +
8/I0Reference current -
9Not connected tp probe
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7.0: Electrical Interface
7.0: Electrical Interface (continued)

Manual Part No. 502350 Issue 2
7.2 Voltage probe
Pin Number Signal Description
1/V
2Quadrature phase voltage -
2 5V dc Sense
3V
0Reference voltage +
4/V
0Reference voltage -
5V
1In Phase voltage +
6/V
1In Phase voltage -
7 No connection
8V
2Quadrature phase voltage +
9 No connection
10 0V dc Probe power return
11 0V dc Sense
12 5V dc Probe power supply
Note: Connector housing is connected to cable screen
and therefore probe body.
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8.0: Specification
Model LE12 LE25
Stroke 12mm (0.5”) 25mm(1.0”)
Resolution Dependant on subsequent electronics
Accuracy ± 0.5µm (20 millionths inch)
Reference temp 20°C (68°F)
Slew rate 0.5 m/sec (1.5 ft/sec)
Operating ANY
attitude
Gauging forces:
(typical at
mid stroke)
Downwards 0.6N (60gm) (2.1 oz)
Upwards 0.01N (10gm) (0.3 oz)
Horizontal 0.5N (50gm) (1.7 oz)
Max side load 0.1N (100gm) (3.5 oz)
Shock 100g (6ms)
Vibration 10g (50-2000 Hz)
Cable length 2m
Temp range
- Operating 0° to 50°C (32° to 122°F)
- Storage -20° to +70°C (-4° to 158°F)
IP Rating
Probe: IP50 (IP65 optional)
Mounting 8mm
h6
Tip thread M2.5x6 deep
size
Supply Voltage 5V ± 0.25VDC
Supply Current (max) 20mA
EMC EN50081-1 &
EN50082-2
8.0: Specification !
Manual Part No. 502350 Issue 2
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Manual Part No. 502350 Issue 2
9.0:Outline Drawings
9.0: Outline Drawings
"
Note:
All dimensions in mm
All dimensions stated
are nominal
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9.0:Outline Drawings
9.0: Outline Drawings (continued)
#
Manual Part No. 502350 Issue 2
Note:
All dimensions in mm
All dimensions stated
are nominal
Connector
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Devices returned for service/repair/calibration should be
shipped prepaid to your distributor or, if purchased
directly from Solartron Metrology, to the relevant Sales
Office (see below).
The shipping container should be marked: "For the
Attention of the Returns Department"
The following information should accompany the
device(s):
1. Contact details of company/person returning device,
including return shipping instructions.
2. A statement of service required and purchase order.
3. Description of the device fault and the circumstances
of the failure, including application environment and
length of time in service.
4. Original purchase order number and date of
purchase, if known.
Please note: A standard assessment charge is
applicable on all non-warranty devices returned for
repair. Customer damage and any device found, upon
inspection, to have no fault will be considered non-
warranty.
Please contact the Sales Office or Distributor for
warranty terms, service options and standard charges.
Adherence to these procedures will expedite handling
of the returned device and will prevent unnecessary
additional charges for inspection and testing to
determine the condition.
Solartron Metrology reserves the right to repair or
replace goods returned under warranty.
All repairs are guaranteed for 3 months (unless
otherwise stated).
Solartron Metrology reserves the right to make changes
without further notice to any products herein to improve
reliability, function or design. Solartron Metrology does
not assume any liability arising out of the application or
use of any product or circuit described herein, neither
does it convey any licence under patent rights nor the
rights of others.
10.0: Return of goods
10.0: Return of Goods
$
Manual Part No. 502350 Issue 2
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France
Solartron Metrology
Z.I. du Bois Chaland
2, rue de Bois Chaland
CE 5611 Lisses
Evry Cedex, 91056
Tel: [phone]
Fax: [phone]
[e-mail]
Germany
Solartron Metrology
Wittekindstrasse 12
45470
Mülheim/Ruhr
Tel: [phone]
Fax: [phone]
[e-mail]
United Kingdom
Solartron Metrology
Steyning Way
Bognor Regis
West Sussex
PO22 9ST
Tel: [phone]
Fax: [phone]
[e-mail]
U.S.A.
Solartron Metrology
10770 Hanover Road
Forestville
NY 14062
Tel: [phone]
Fax: [phone]
[e-mail]
Solartron pursues a policy of continuous development. The specifications in this document may therefore be changed without notice Solartron Metrology Ltd. A Roxboro Group Company
solartron
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www.solartronmetrology.com
SOLARTRON METROLOGY OFFICES
Solartron Metrology Ltd. is a subsidiary of The Roxboro Group Plc.
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