MICRO-EPSILON NLS3181 User manual

OC
SENSORS & SYSTEMS
MICRO-EPSILON
Authority in Displacement Measurement
Instruction Manual
Non Contact Compact
Displacement Measuring System
on Eddy Current rinciple
NLS3181

MICRO-EPSILON
MESSTECHNIK
GmbH & Co. KG
Königbacher Strasse 15
D-94496 Ortenburg
el. +49/85 42/1 68-0
Fax [phone]
e-mail [email protected]
www.micro-epsilon.com
Zertificated acc. to DIN EN ISO 9001: 2000

X9751115-A030094MSC
Contents
1. Safety ................................................................... 5
1.1 Symbols Used ......................................................................5
1.2 Warnings............................................................................... 5
1.3 Notes on CE Identification ................................................... 5
1.4 Proper Use ...........................................................................6
1.5 Proper Environment .............................................................6
2. System Descr pt on ............................................. 7
2.1 Area of Application ...............................................................7
2.2 Measuring Principle ..............................................................7
2.3 Structure of the Complete Measuring System .....................7
2.4 Glossary................................................................................8
3. Techn cal Data ..................................................... 9
4. Installat on and Assembly ................................ 10
4.1 Precautions.........................................................................10
4.2 Sensor ................................................................................10
4.3 Sensor Cables ....................................................................11
4.4 Controller ............................................................................12
4.6 System Adjustment ............................................................13
5. Operat on ........................................................... 13
5.1 Control Elements ................................................................15
5.2 Calibration ..........................................................................15
6. El m nat ng Errors ............................................. 16
7. Accessor es ....................................................... 16
8. Warranty ............................................................ 17

X9751115-A030094MSC

X9751115-A030094MSC 5
1. Safety
he handling of the system assumes knowledge of the instruction manual.
1.1 Symbols Used
he following symbols are used in this instruction manual:
DANGER! - imminent danger
WARNING! - potentially dangerous situation
i
IMPORTANT! - useful tips and information
1.2 Warn ngs
 Avoid banging and knocking the electronics / sensors
ðDamage to or destruction of the electronics / sensors
 Power supply must be connected in accordance with the safety regulations
for electrical equipment
ðDanger of injury
ðDamage to or destruction of the sensor safety
 Protect the cables against damage
ðFailure of the measuring device
1.3 Notes on CE Ident f cat on
he following applies to NLS3181:
EU regulation 89/336/EEC
Products which carry the CE mark satisfy the requirements of the EU regulati-
on EU 89/336/EEC Electromagnetic Compatibility and the European stan-
dards (EN) isted therein.
he EU declaration of conformity is kept available according to EU regulation,
article 10 by the authorities responsible at
MICRO-EPSILON MESS ECHNIK
GmbH & Co. KG
Königbacher Straße 15
94496 Ortenburg
Safety

6 X9751115-A030094MSC
he NLS3181 is designed for use in industry and satisfy the requirements of
the standards
 EN 50 081-2 RFI emission
 EN 61000-6-2 Immunity to interference
he system satisfy the requirements if they comply with the regulations descri-
bed in the instruction manual for installation and operation.
1.4 Proper Use
 he NLS3181 is designed for use in industrial areas.
 It is used for machine supervision and for measuring and testing in process
quality assurance.
 he system may only be used in such a way that does not endanger per-
sons or cause damage to the machine due to malfunctions or total failure of
the system.
 Additional precautions for safety and damage prevention must be taken for
safety-related applications.
1.5 Proper Env ronment
 Protection class
Sensor: IP 65
Controller: IP 54
 Operating temperature
Sensor and sensor cable: -50 to +150 °C (-58 to +302 °F)
Controller: +10 to +65 °C (+50 to +149 °F)
 Humidity: 5 - 95 % (no condensation)
 Ambient pressure: atmospheric pressure
 Power supply: 24 VDC (9 ... 36 VDC)
 Storage temperature: -25 to +75 °C (-13 to +167 °F)
Safety

X9751115-A030094MSC 7
i
IMPORTANT!
he components are mat-
ched.
he allocation of the sensor
and the controller determi-
ned by the serial number.
System Description
2. System Descr pt on
2.1 Area of Appl cat on
he NLS3181 non-contact, compact displacement measuring systems are de-
signed for industrial applications to measure the movement of injection need-
les.
2.2 Measur ng Pr nc ple
he NLS3181 displacement measuring system operates without contact using
eddy current technology. It is used for making measurements on targets made
of ferromagnetic electrically conductive materials.
High-frequency alternating current flows through a coil cast in a sensor casing.
he electromagnetic coil field induces eddy currents in the conductive target
thus changing the ac resistance of the coil. his change in impedance is inter-
pretted by demodulation electronics which generate an electrical signal pro-
portional to the distance of the target from the sensor.
A patented electronic compensation technique reduces temperature-depen-
dent measuring errors to a minimum.
2.3 Structure of the Complete Measur ng System
he NLS3181 non-contact single channel displacement measuring system
(Fig. 2.1) consists of:
- Sensor LS04
- Connecting cable C3/1
- Signal conditioning electronics (controller)
built into a compact aluminium housing
- Power supply and output cable PC3/4
Sensor
connection
Power supply
Signal output

8 X9751115-A030094MSC
System Description
2.4 Glossary
SMR Start of measuring range. Minimum overlapping between sensor and
the injection needle groove.
MMR Midrange
EMR End of measuring range. Maximum overlapping between sensor and
the injection needle groove.
-5 V
0
+5 V
Signal
Sensor
SMR MMR EMR
Displacement
Injection
needle

X9751115-A030094MSC 9
echnical Data
3. Techn cal Data
ledomrosneS40SL
rellortnoC1813SLN
egnargnirusaeMRM)"610.(mm4.0
RMSegnargnirusaemfotratS )"800.(mm2.0-
RMEegnargnirusaemfodnE)"800.(mm2.0+
ytiraeniL ≤OSF%5.1±
noituloseRcitats
cimanyd
)slim200.0(mµ50.0
)slim20.0(mµ5.0
esnopserycneuqerF)Bd3-(zHk001
ytilibataepeRcitatsOSF%50.0±
gnitarepO
erutarepmet
rosneS
elbaC+
C°051+...01+
)F°203+...05+(
rellortnoCC°56+...01+
)F°941+...05+(
erutarepmetegarotS C°57+...52-
)F°761+...31-(
ytilibatserutarepme ≤(C°/OSF%50.0± ≤)F°/OSF%30.0±
ssalcnoitcetorProsneS
elbaC+ 56PI
rellortnoC45PI
elbacrosneshtgneLdradnatS
noisnetxE
,)%51±(m5.0
)%51±(m3
elbacrosneslairetaM)nolfet(EFP
tuptuolangiS CDV5+...CDV5-
ylppusrewoP )CDV63...CDV9(CDV42+
ytilibitapmoccitengamortcelE 2-6-00016NE/2-18005NE.cca
he specified technical data apply for the reference material mild steel St37
DIN1.0116 at 20 °C.
FSO = Full Sale Output

10 X9751115-A030094MSC
4. Installat on and Assembly
4.1 Precaut ons
No sharp or heavy objects should be allowed to affect the cable sheath of the
sensor cable, the supply cable and of the output cable. All plug-in connections
must be checked for firm seating before starting operation.
4.2 Sensor
ype designation: LS04
Construction: he front part of the sensor with encapsulated coil
consists of electrically non-conducting materials.
Important: In the radial direction metal parts in the vicinity may
behave similar to the measurement object,
rendering the measurement result inaccurate.
Legend:
mm
(inches)
Installation and Assembly
Fig. 4.2: Bonding the sensor into the injection body
i
IMPORTANT!
he sensor needs to be
bonded into the injection
body for high pressure
applications.
Fig. 4.1: Sensor Dimensions LS04 with integral cable
3.42 (.13)
2.42 (.10)
ø2.6
(.10)
ø0.5 (.02)
-0.05
R 0.1
70 ° ±0.2 °
Integral cable
length: 500 (20)
Honed
ø3.5
(.14)
Injection body Sensor LS04 Mounting screw
Cold-cured adhesive

X9751115-A030094MSC 11
Installation and Assembly
i
IMPORTANT!
he tuned cables may not
be shortened because this
changes the capacity and
the adjustment of the
measuring system!
he thicker cable end must
be connected with the signal
conditioning electronics.
4.3 Sensor Cables
 Do not kink the cables - the minimum bending radius is 10 mm.
 Lay the cable such that no sharp-edged or heavy objects can affect the
cable sheath.
 Make the connection between the sensor and controller using the integral
sensor cable, the transition board and the sensor cable C3/1. Connect the
sensor cable to the controller. Check the plugged connections for firm sea
ting.
he integral sensor cable has a length of 0.5 m. he sensor cable extension
C3/1 has a length of 3 m.
he cables of one type are tuned to the same capacitance at the factory. his
may result in deviations in length of +15 % in relation to the nominal length.
Fig. 4.3: easuring against the injection needle
Injection needle
Injection body
Mounting screw
Sensor LS04
0.5
(.020)
3 (.118)
ø4 (.16)
0.2
(.008)
M4 x 0.35
0.61
(.024)
2.71
(.107)

12 X9751115-A030094MSC
Installation and Assembly
Fig. 4.4: Sensor connecting cables
4.4 Controller
he signal conditioning electronics (Fig. 4.5) are installed in an aluminium
casing. he oscillator and demodulator electronics are on one board.
 he oscillator electronics feed the sensor with a frequency and amplitude
stable ac voltage
 he demodulator electronics demodulate, linearise and amplify the distance-
dependent measuring signal.
he signal conditioning electronics are already tuned to the delivered sensor
with connecting cable at the factory.
SENSOR
i
IMPORTANT!
ransition board, both si-
des for soldering.
Dimensions: 16 x 10 x 1.5
(0.63 x 0.39 x 0.06)
Legend:
mm
(inches)
Integral
cable Controller
C3/1
Sensor
ransition
board
Fig. 4.5: Dimensional drawing controller NLS3181 with connecting elements
Power supply
Signal output
150 (5.91)
64 (2.52) 53 (2.09)
138 (5.43)
64 (2.52)
Mounting holes for screws M4
38
(1.50)

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4.6 System Adjustment
Measuring systems of the NLS3181 must be calibrated by the user for his par-
ticular application before measuring (see chap. 5.2 Calibration and Linearisati-
on). If possible use
- the actual sensor mounting and
- the actual target!
5. Operat on
Check ng the measur ng system setup:
1) Is the sensor adjusted for the application (target material)?
2) Are the sensor, cable length and electronics aligned?
(type and serial number)
3) Is the sensor connected?
4) Are the cable connections tight?
Connect ng the measur ng system setup:
 Set up the power supply for the electronics by
- connecting the cable (PC3/4) or
- a user assembled cable
1) to the 8-pole built-in socket (Fig. 5.1) on the controller casing with
the enclosed plug,
2) to a 24 VDC power supply
Fig. 5.1: Socket pin assignment and signal output for standard supply
(+24 VDC)
 Measuring signal displays or recorders are also connected to the 8-pole
built-in socket on the controller casing
 Switch on the power supply on the power supply unit
 Let the measuring setup warm up for about 15 minutes
i
IMPORTANT!
Protect cables against
pressure in pressurized
rooms.
Matching power supply units
for the controller are availa-
ble as accessories!
Operation
i
IMPORTANT!
If you cannot use the actual
target, simulate the
measuring environment as
accurately as possible.
Signal ground
Signal
Voltage output
(standard)
24 Volt
0 Volt
(24 V power
supply)
67
1
2
3
45
8

14 X9751115-A030094MSC
he power supply and signal output are connected by the 8-pin built-in con-
nector (DIN 45326). See the drawing and table for the pin assignment. he
controller contains an 8-pin cable socket for the unser-side assembly of your
own connecting cable.
- ake the 8-pin cable socket which is enclosed at the signal conditioning
electronics
- A screened cable must be used!
- Outer screnning mesh surrounds all sable wires.
- Screen connected via connector housing to housing ground
- Recommended conductor cross-section 0.14 mm²
he EMC regulations are only satisfied under these basic conditions.
PC3/4 is a 3 m long, pre-assembled 4-wire power and output cable. It is supp-
lied as an accessory.
P n ass gnment and colour codes PC3/4
Operation
NIPruolocelbaCtnemngissA
1yergtloV0
6neergtloV42+
3etihwtuptuoegatlovlangis
7nworbtloV0

X9751115-A030094MSC 15
he trimmer potentiometers
Zero and Gain have 24
turns! A slight click is audi-
ble at the end positions.
Operation
5.1 Control Elements
 Remove the cover from the controller by loosening the four screws in the
cover
here are two trimmer potentiometers on the demodulator board (Fig. 5.2) for
adjusting
- Zero and
- Gain
he measuring signal can be adjusted in the range from -5 VDC to +5 VDC at
a max. output current of 10 mA. he output is temporarily short-circuit-proof.
he output impedance is less than 10 ohms.
5.2 Cal brat on
Every measuring channel must be calibrated for the installation environment
and the target prior to measuring. he two trimmer potentiometers are set at
two distance points by a reference norm for calibration.
 urn the trimmer potentiometer with a screwdriver in a clockwise direction to
effect a positive change in the output voltage
 urn the trimmer potentiometer with a screwdriver in counterclockwise direc-
tion to effect a negative change in the output voltage
 Use the original measuring environment for calibration where possible. Si-
mulate the measuring environment if this is not possible.
Fig. 5.2: Potentiometers on the demodulator board
Power,
output
GainZero
Sensor

16 X9751115-A030094MSC
Step 1: Zero adjustment
 Set the target at the middle of measuring range to the sensor
- he middle of measuring range corresponds to the measuring value of 0 V
 Set the output voltage to 0 V on the Zero potentiometer
Step 2: Ga n adjustment
 Move the target to the end of measuring range (see Chap. 2.4)
 Set the output voltage on the Gain potentiometer to the value of the
desired voltage for full range (+5 VDC or -5 VDC)
6. El m nat ng Errors
No change n output s gnal
 Check supply voltage
 Check allocation of sensor type and cable length
 Check sensor and cable
7. Accessor es
PS100/230/15 Built-in power supply unit
Input 230 Vac
Output ±15 Vdc; 500 mA
PC3D Supply and output cable, 3 m long,
plugs on both ends to fit
D 110 electronics and PS1000 power supply units
PS1605 Built-in power supply unit
Input 230 Vac
Output 24 V; 600 mA
erminal strip connections
PC3 Supply and output cable, 3 m long,
with one plug to fit D 110 electronics
and cable spades for terminal connection
i
IMPORTANT!
he highest sensitivity over
the whole range is achieved
at a calibration to 10 V output
voltage.
his gives the best signal/
noise ratio!
Operation

X9751115-A030094MSC 17
8. Warranty
All components of the device have been checked and tested for perfect func-
tion in the factory.
In the unlikely event that errors should occur despite our thorough quality
control, this should be reported immediately to MICRO-EPSILON.
he warranty period lasts 12 months following the day of shipment. Defective
parts, except wear parts, will be repaired or replaced free of charge within this
period if you return the device free of cost to MICRO-EPSILON.
his warranty does not apply to damage resulting from abuse of the
equipment and devices, from forceful handling or installation of the devices or
from repair or modifications performed by third parties.
No other claims, except as warranteed, are accepted. he terms of the
purchasing contract apply in full.
MICRO-EPSILON will specifically not be responsible for eventual
consequential damages.
MICRO-EPSILON always strives to supply the customers with the finest and
most advanced equipment. Development and refinement is therefore perfor-
med continuously and the right to design changes without prior notice is
accordingly reserved.
For translations in other languages, the data and statements in the German
language operation manual are to be taken as authoritative.
MICRO-EPSILON
MESSTECHNIK
GmbH & Co. KG
Koenigbacher Str. 15
D-94496 Ortenburg
el. +49/8542/168-0
Fax. [phone]
e-mail: [email protected]
www.micro-epsilon.com
Warranty

18 X9751115-A030094MSC