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Manual
Double Sheet Control System R1000-Series L20
with integrated fieldbus interface
Double Sheet Control-System
L20
Dual Head Double Sheet Control System
for Metals and Non-ferrous metals
Laser based Function principle
Thickness Control from 0.3 to 15 mm
► Up to 3 pairs of sensors can be connected to the control unit (3 channel version)
► Suitable for magnetic feeder systems without velocity limitation
► Absolute measuring method
► Digital display of sheet thickness and operational parameters
► Monitoring of over-gauge and under-gauge limit
► Integrated fieldbus interface with process and parameter interface
THE ROLAND PLUS:
All common Fieldbus standards
Maintenance-free
For composite materials also
Copyright
© 2015 ROLAND ELECTRONIC GmbH
Otto-Maurer-Str. 17
75210 Keltern / Germany
All rights on this document are at ROLAND ELECTRONIC GmbH.
Reproduction (also partly), electronical coverage, translation, transmission to third parties,
only with our prior permission.
Subject to change without further notice.
Manual
Double Sheet Control System R1000 series L20
with integrated fieldbus interface
B0063191 / 1.3
Table of contents
ROLAND ELECTRONIC GmbH · Otto-Maurer-Str. 17 · DE 75210 Keltern · Phone +49 (0)7236-9392-0 · Fax +49 (0)7236-9392-33
3
Declaration of conformity according to EC directives ..................................................................................... 5
1 Safety advice .......................................................................................................................................... 7
1.1 Safety instructions and warnings for user .......................................................................................... 7
1.2 Declaration of icons ............................................................................................................................ 7
1.3 Intended use ....................................................................................................................................... 8
1.4 General hints for process reliability .................................................................................................... 8
2 Technical data ........................................................................................................................................ 9
2.1 L20 Technical data ............................................................................................................................. 9
2.2 Sensor system LAAS40 .................................................................................................................... 10
2.3 Sensor system LAAS40+.................................................................................................................. 10
2.4 Sensor cable ..................................................................................................................................... 10
2.5 Beam control cable ........................................................................................................................... 10
3 System description .............................................................................................................................. 11
3.1 Measurement principle ..................................................................................................................... 12
3.2 Control unit ....................................................................................................................................... 14
4 Mounting ............................................................................................................................................... 17
4.1 General mounting instructions .......................................................................................................... 17
4.2 Dimensions of the system ................................................................................................................ 18
4.3 Mounting of sensors ......................................................................................................................... 19
5 Electrical installation ........................................................................................................................... 25
5.1 General instructions .......................................................................................................................... 25
5.2 Configuration of connectors .............................................................................................................. 26
6 Communication with the PLC ............................................................................................................. 35
6.1 Fieldbus specific messages .............................................................................................................. 35
6.2 Data transmission communication.................................................................................................... 36
6.3 Process channel ............................................................................................................................... 36
6.4 Parameter channel ........................................................................................................................... 48
6.5 External I/O control ........................................................................................................................... 55
6.6 Fieldbus configuration file ................................................................................................................. 59
7 Start-up .................................................................................................................................................. 67
7.1 Initially applying power to the system ............................................................................................... 67
7.2 Start screen ...................................................................................................................................... 67
7.3 Operation .......................................................................................................................................... 68
7.4 Configuration menu .......................................................................................................................... 69
7.5 General information regarding the configuration .............................................................................. 73
7.6 Changing, setting-up or checking the configuration ......................................................................... 73
7.7 Program parameters ......................................................................................................................... 75
7.8 Adjustment parameters .................................................................................................................... 77
7.9 System parameters .......................................................................................................................... 84
7.10 Data backup ...................................................................................................................................... 94
7.11 Firmware update ............................................................................................................................... 95
Manual
Double Sheet Control System R1000 series L20
with integrated fieldbus interface
Table of contents
B0063191 / 1.3
4
ROLAND ELECTRONIC GmbH · Otto-Maurer-Str. 17 · DE 75210 Keltern · Phone +49 (0)7236-9392-0 · Fax +49 (0)7236-9392-33
8 Operation ...............................................................................................................................................97
8.1 Quick start guide .............................................................................................................................. 97
8.2 Entering a measurement program ................................................................................................... 97
8.3 Averaging time t
a
and Measuring time t
m
......................................................................................... 98
8.4 Measuring channel calibration (after sensor exchange) .................................................................. 99
9 Fault messages, causes and remedies ........................................................................................... 101
9.1 Memory faults ................................................................................................................................ 102
9.2 USB data transmission (virtual RS232) faults ............................................................................... 103
9.3 System operation faults ................................................................................................................. 103
9.4 Keyboard faults .............................................................................................................................. 103
9.5 Fieldbus interface faults ................................................................................................................. 104
9.6 Measuring channel or calibration with calibration sheet faults ...................................................... 105
9.7 Measuring channel calibration faults ............................................................................................. 105
9.8 Hardware faults .............................................................................................................................. 105
9.9 Supply voltage faults ...................................................................................................................... 105
9.10 Sensors / Sensor cables faults ...................................................................................................... 106
9.11 Other faults .................................................................................................................................... 107
10 Maintenance ....................................................................................................................................... 109
10.1 Replacement of sensors ................................................................................................................ 109
10.2 Sensor cleaning ............................................................................................................................. 109
10.3 Device replacement ....................................................................................................................... 109
10.4 Replacement of fuses .................................................................................................................... 109
10.5 Data backup via fieldbus interface ................................................................................................. 110
10.6 Data backup via USB interface ...................................................................................................... 110
10.7 Firmware update via USB interface ............................................................................................... 110
10.8 Spare parts .................................................................................................................................... 110
11 Technical records .............................................................................................................................. 111
11.1 Parameter channel commands ...................................................................................................... 111
12 Order data .......................................................................................................................................... 117
12.1 Versions of control unit L20 ........................................................................................................... 117
12.2 Sensor systems ............................................................................................................................. 117
12.3 Sensor spare parts ......................................................................................................................... 118
12.4 Cables ............................................................................................................................................ 118
12.5 Cable plugs and cable sockets (within scope of delivery) ............................................................. 118
12.6 Other accessories (within scope of delivery) ................................................................................. 118
13 Appendix ............................................................................................................................................ 118
13.1 Fieldbus terminology ...................................................................................................................... 118
13.2 System configuration form ............................................................................................................. 119
Manual
Double Sheet Control System R1000 series L20
with integrated fieldbus interface
B0063191 / 1.3
De
claration of conformity
ROLAND ELECTRONIC GmbH · Otto-Maurer-Str. 17 · DE 75210 Keltern · Phone +49 (0)7236-9392-0 · Fax +49 (0)7236-9392-33
5
Declaration of conformity according to EC directives
Manufacturer: Roland Electronic GmbH
Otto-Maurer-Str. 17
DE 75210 Keltern
Product name:
L20
Product type:
Double Sheet Control System
R1000 series
Roland Electronic GmbH declares that the product listed above complies with the requirements of
the EMC directives listed below.
Applied Directives:
2006/95/EG Low Voltage Directive
EN61010-1: 2010
2004/108/EG: EMC Directive
EN61000-6-2: 2005-08 EN61000-6-4: 2007-01
Date of mark’s apposition: 04.03.2015
Keltern, 04.03.2015
Managing Director
Place, Date Signature Function of the signer
The declaration confirms the compliance with the cited directives. However, it is not any implied warranty of fitness for a
particular purpose especially as it may relate to product liability.
The safety instructions and warnings must be observed.
ISO 9001 : 2008
Reg.-no. 5152 QM08
Manual
Double Sheet Control System R1000 series L20
with integrated fieldbus interface
B0063191 / 1.3
6
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Blank page
Manual
Double Sheet Control System R1000 series L20
with integrated fieldbus interface
B0063191 / 1.3
Safety advice
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1 Safety advice
1.1 Safety instructions and warnings for user
This manual contains all information required for the correct operation of the Roland equipment.
It has been written for technically qualified personnel.
Unauthorized tampering with the unit, especially ignoring the warnings in this manual can cause
malfunction and damage to the unit. Only authorized personnel should be allowed to make
changes to the unit and perform cable connections especially the power supply.
Should it be necessary, e.g. in case of service or repair, to make measurements within the unit,
then all customary accidents prevention procedures should be observed. Only professional
electrical tools should be used.
Note The factory pre-settings – especially the upper / lower limit values – have
been chosen such that an optimal machine protection is ensured.
Diverging settings can impair the machine protection.
Safety instructions for handling of laser sensors!!
Caution! Laser radiation! Do not stare into the beam!
Do not stare into the reflected beam.
Max. power: 1 mW
Impuls duration: max. 6.4 ms
Wavelength: 658 nm
Medium: Semi conductor laser
Laser class II (EN 60825-1)
1.2 Declaration of icons
Warning – Laser radiation!
Risk to the eyes by laser radiation.
Attention - Damage of construction units!
Reference to a potential imminent situation, which can result in damage to the
product or environs.
Note
Useful reference to an application or deepening information.
Manual
Double Sheet Control System R1000 series L20
with integrated fieldbus interface
Safety advice B0063191 / 1.3
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1.3 Intended use
Flexible Manufacturing Systems in the sheet processing industry require reliable Double Sheet
Control systems in order to protect presses and other sheet processing machines against damage
caused by feeding multiple sheets.
The Double Sheet Detector R1000 L20 was specifically developed for this technical environment.
The reliable function of the Double Sheet Detector depends therefore most importantly on the
selection of the correct sensors and the mounting of the sensors.
1.4 General hints for process reliability
The process security of the system is influenced by the following factors:
• Stability of the measuring values
• Setting of under-gauge threshold and over-gauge threshold
• Evaluation of the status signals
Stable measuring conditions will result in stable measuring results. Varying measuring results are
undesirable, because in such cases the user is inclined to decrease the under-gauge threshold
LOW and to increase the over-gauge threshold UP. On doing so, the user puts up with the
drastically increasing risk of not detecting a double sheet.
The following external factors decisively influence the stability of measuring results and need to be
considered for operation of a double sheet detector:
• Optical characteristics of the material
• Tolerance in material thickness
• Contamination of the material
• Geometric conditions at the place of measurement (Stability of the sensor gaps)
• Contamination of the sensors (dirt, oil …)
From this some simple rules can be derived, which enable a high process security when abided by:
• Every different sheet (Thickness, material and contour) is measured with separate
measuring program.
• Adjust the switching thresholds as tight as possible!
• Keep the sensor gap constant!
• Make use of the air connection to keep the sensors clean!
Furthermore it is necessary that the machine control:
• checks all status signals of the L20,
• checks the 0-sheet signal.
While measuring, only the 1-sheet signal may occur. If 0-sheet or 2-sheet occurs, the measured
sheet may not be transported on. In such cases, the sheet will usually be removed.
• The machine controls needs to evaluate all status signals !
Checking-up through the 0-sheet signal is to assure that a sheet really is between the sensors
during measuring. If 0-sheet occurs while measuring, the measurement is not correct. For example,
a defective sensor holder might change the sensor gap. Monitoring the sheet thickness would then
only be seemingly performed.
In case of double sheet severe consequences could then result.
Manual
Double Sheet Control System R1000 series L20
with integrated fieldbus interface
B0063191 / 1.3
Technical data
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2 Technical data
2.1 L20 Technical data
Technical Data L20-XX-S L20-3-XX-S
Operating voltage: 24 VDC, +6 V / -4 V
Power consumption: 18W
Switch on current:: 10 A for 1 ms
External fuse: 1 Amp medium time lag
Weight: approx. 3.5 kg (7.71 lbs) approx. 3.9 kg (8.60 lbs)
Ambient temperature: 0 - 50 °C (30 - 122° F)
Wall mount enclosure:
Protection category: IP65
L20-XX-S: approx. 225 x 206 x 112 mm (L x H x T)
approx. 8.9 x 8.1 x 4.4 inch (L x H x D)
L20-3-XX-S: approx. 225 x 206 x 132 mm (L x H x T)
approx. 8.9 x 8.1 x 5.2 inch (L x H x D)
Additional characteristics:
• 255 parameter sets memory
• Programming via front panel keys or fieldbus
• 3 potential free optocoupler inputs 24 VDC with common external supply:
Specification
min. switching voltage HIGH: 13 VDC min. switching voltage LOW: 0 VDC
max. switching voltage HIGH: 30 VDC max. switching voltage LOW: 8 VDC
• 5 potential free outputs with positive external supply
Specification
max. switching voltage: 30 VDC max. switching current: 500 mA
Attention In case of inductive load a coil protection diode should be used.
Otherwise the signal output could be destroyed by the excess
voltage generated by switching the inductive load off.
• Fieldbus interface (depending on type of unit)
Interfaces
Profibus-DP Interface according to EN 50170, Protocol
Version 1.10, max. baud rate 12 Mbit/s
DeviceNet communication adapter (profile number 12)
acc. to ODVA specification (group two only server)
CanOpen Interface, acc. to DS301 v4.02 compliant ProfiNet IO Interface
CC-Link V1 EtherNet/IP
EtherCAT
• Virtual RS232 interface (via USB) for data backup
• USB interface for Firmware update
Included device accessories:
• Fieldbus plug
• Plug for connecting to the power supply, inputs and outputs
• USB cable for data backup, restoring data and for performing the firmware update
Manual
Double Sheet Control System R1000 series L20
with integrated fieldbus interface
System description B0063191 / 1.3
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2.2 Sensor system LAAS40
Technical data
Application: Double Sheet Control
Material thickness: 0.3 - 15 mm (at nominal sensor distance Ax = 40 mm)
Repetition accuracy: +/- 0.05 mm
Measuring principle:
Laser triangulation, Laser Class 2, EN 60825-1
Class of protection: IP54
Weight: approx. 2 kg (4.409 lbs) – without mounting angle and alignment aid
Material of enclosure: Aluminum
Sensor cable: Each pluggable with 0.5 m (19.68 in) length
Air connection: Tube, 8 mm outer diameter
2.3 Sensor system LAAS40+
Technical data
Application: Double Sheet Control
Material thickness: 0.3 - 15 mm (at nominal sensor distance Ax = 40 mm)
Repetition accuracy: +/- 0.05 mm
Measuring principle:
Laser triangulation, Laser Class 2, EN 60825-1
Class of protection: IP54
Weight: approx. 2.2 kg (4.85 lbs) – without mounting angle and alignment aid
Material of enclosure: Aluminum
Sensor cable: Each pluggable with 0.5 m (19.68 in) length
Air connection: Tube, 8 mm outer diameter
Beam control: Photo element
2.4 Sensor cable
Cable marking:
SCL20S-GG with straight cable socket at the sensor and straight cable plug at the unit
Technical data
Cable length: From 0.5 m to 50 m, pluggable
Cable bending radius: 50 mm at fixed wiring; 100 mm at flexible wiring
Cable diameter: 7.1 mm
Suitable for drag chains, oil proof, PUR jacket; Superflex TRONIC[C]PUR TP 4 x 2 x 0.25 mm²
2.5 Beam control cable
Cable marking:
SC5M12S-GG with straight cable socket at the sensor and straight cable plug at the unit
Technical data
Cable length: From 0.5 m to 50 m, pluggable
Cable bending radius: 50 mm at fixed wiring; 100 mm at flexible wiring
Cable diameter: 5.3 mm
Suitable for drag chains, oil proof, PUR jacket; Superflex TRONIC[C] UL 5 x 0.25 mm²
Manual
Double Sheet Control System R1000 series L20
with integrated fieldbus interface
B0063191 / 1.3
System description
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3 System description
The L20 is based on the product platform R1000 and consists of three components:
• the control unit
• one to three sensor systems (each with two sensors and brackets)
• sensor cables
Fig. 1: System L20
LAS40
LAS40+
LAS40
LAS40+
LAS40
AS40+
L
LAAS40+
Kanal 1
Channel 1
A1 B1 C1 A2 B2 C2 A3 B3 C3
*SCL20S-GG
SC5M12S-GG
SC5M12S-GG
SC5M12S-GG
Kanal 2
Channel 2
Kanal 3
Channel 3
*
*
*
*
*
LAAS40+
LAAS40+
RBA
LAS40
LAS40
**
*SCL20S-GG
LAAS40
L20-XX-S L20-3-XX-S
*
LAS40
LAS40+
LAS40
LAS40+
LAS40
AS40+
L
Manual
Double Sheet Control System R1000 series L20
with integrated fieldbus interface
System description B0063191 / 1.3
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3.1 Measurement principle
The function of the Double Sheet Detector is based on the principle of laser triangulation. The
sensor system consists of two sensors which measure the distance.
If the total distance is known it is possible to calculate the sheet thickness.
Fig. 2: Measurement principle
3.1.1 Planning information for mechanics
The total distance Ax of both sensors from each other has a great influence on the measurement
precision.
Important An appropriate stable and rigid mechanism is required.
Possible determining factors are also:
1. Thermal expansion
2. Vibrations
3. Impacts, press travel
4. Force and torque effects
These factors must be considered sufficiently when dimensioning the mechanics and the sensor
mounting. Permissible deviations Delta Ax must be smaller than 1/6 of the smallest thickness D
min
to be measured.
Example: For a reliable monitoring of sheets for double sheet detection with a nominal thickness of
0.3 mm, the permissible deviation Delta Ax is:
+/- 0.3 mm / 6 = +/- 0.05 mm.
A
x
A
BD
D= A
x-(A+B)
Manual
Double Sheet Control System R1000 series L20
with integrated fieldbus interface
B0063191 / 1.3
System description
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Considering the typical measurement inaccuracy of +/- 0.05mm of the LAS40 sensors itself,
therefore a total error of +/- 0.1mm may occur.
Sheet thickness 0.3 mm: -> measuring value between 0.2 mm and 0.4 mm
Sheet thickness 0.6 mm: -> measuring value between 0.5mm and 0.7mm
For safe operation, the upper limit must be set to 0.45mm (= 150% of the nominal thickness) and
the lower limit to 0.15 mm (= 50% of the nominal thickness).
If the limits 150% respectively 50% are not sufficient, a calibration must be performed.
When dimensioning the mechanics and the sensor mounting, the Delta values Ax (permissible
deviation of the base distance due to thermal expansion, vibrations, impacts, press travel) must be
considered: According to the smallest sheet thickness, following deviations must be observed:
Fig. 3: Deviations for LAS10
Fig. 4: Deviations for LAS40
LAS10
Delta Ax [mm]
Dmin [mm]
LAS10
LAS40
Delta Ax [mm]
Dmin [mm]
LAS40
0,6
0,5
0,4
0,3
0,2
0,1
0
0 1 2 3 4
Manual
Double Sheet Control System R1000 series L20
with integrated fieldbus interface
System description B0063191 / 1.3
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Fig. 5: Deviations for LAS200
3.1.2 Planning information for calibration
If the values Delta Ax cannot be achieved, a regular calibration may be helpful.
Ideally, a gauge block is provided in mechanics. This can be done via a pneumatic cylinder and is
then automated via PLC control.
3.1.3 Planning information for air blow-off
The operation of the system in ambience containing oils, as it occurs at press lines in the
immediate vicinity of oiling is generally possible if following is respected:
1. The air blow-off of the sensors is used.
2. The system test of the L20-3-XX-S (only LAASxx+ sensors) is accessed cyclical via PLC.
3. The sensors are well accessible for cleaning.
Normally the air blow-off is sufficient to allow reliable operation in vicinity of oiling. However, failure
of air blow-off, can cause serious contamination. This requires the cleaning of the sensor optics.
Therefore, in any case, the safe access to the sensors must be ensured.
3.2 Control unit
The L20 is based on the product platform R1000.
Major features of the control unit:
• Programmable for 255 different sheet thicknesses / types of sheets
• Fieldbus interface for the control, operation and data exchange with the PLC
• Calibration of the measuring point with a calibration sheet
• Digital display of sheet thickness and operating parameters
• Monitoring of over gauge and under gauge limits
• Monitoring of operating voltage and cable breakage
• Optocoupler for direct I/O control via the PLC for fast measurement operations
• Software firmware update
• Data backup via fieldbus interface or USB interface
LAS200
Delta Ax [mm]
Dmin [mm]
LAS200
0,9
0,8
0,7
0,6
0,5
0,4
0,3
0,2
0,1
0
0 1 2 3 4 5 6
Manual
Double Sheet Control System R1000 series L20
with integrated fieldbus interface
B0063191 / 1.3
System description
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3.2.1 Versions of the control unit L20
The control unit article key is coded as follows:
Control unit L20 with fieldbus interface
all sensors are directly connected at the control unit by pluggable contacts.
L20- XX-S
L20-3-XX-S
A Type of unit L20
B Measuring channels
„ „*
3
1 channel unit
1 channels unit
C Fieldbus code XX Bus code
D Connection S Cables pluggable
XX Bus code
PR Profibus-DP
DNT DeviceNet (A-coded)
PN ProfiNet IO
CP CanOpen
CC CC-Link
EN EtherNet/IP
ET EtherCAT
A B C D
* 1 is omitted in article key for the 1-channel control unit
The article key above leads to following version of the control unit:
L20-X-S:
Data backup via
fieldbus or serial
USB interface
Control unit for connecting 1 pair of sensors in wall mounting, fieldbus interface
L20-3-XX-S
Control unit for connecting up to 3 pairs of sensors in wall mounting, fieldbus
interface
3.2.2 Parameters of the control unit
The L20 provides for extensive configuration. So, different customer requirements can be served.
Configuration is performed by setting system parameters, adjust parameters and program
parameters. System parameters are set only once during commissioning, and will then remain
unchanged. Program parameters contain items which are material and job depending, and enable
individual adaptation to the measuring task. The adjustment parameters contain the adjustment of
the measuring point.
The parameters are explained in depth in the chapter 7.3 „Operation“.
Pay special attention to the program parameters „low“, „up“ and „moving average above xx ms“
The switching thresholds of the status signals depend on the settings of „low“ and „up“.
The measuring signal is fed to a window comparator. The signal “0-sheet“ is generated when the
measuring signal falls below the lower switching threshold “ low”. The lower switching threshold
“low” can be set from 1...100%. The signal “2-sheet“ is generated when the upper switching
threshold is exceeded. The upper switching threshold “up” can be set from 100...180%. If the
measuring value is within both limits, the signal “1-sheet“ is generated.
a
b
c
up
low
Signal range for 0-sheet
Signal range for 1-sheet
Signal range for 2-sheet
Upper switching threshold
Lower switching threshold
Fig. 6: Visualization of switching thresholds
2
1
0
Signal
Obere Schaltschwelle
Upper switching threshold
Untere Schaltschwelle
Lower switching threshold
a
b
c
Manual
Double Sheet Control System R1000 series L20
with integrated fieldbus interface
System description B0063191 / 1.3
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The preset values (up=120% resp. low=80%) should only be changed under the following aspects:
1. Target: Increasing the process reliability
Prerequisite: Very stable measurement values
Implementation: Restrict the 1-sheet area. This is done by decreasing the “low” value
and/or increasing the “up” value.
2. Target: Keep the system function alive despite fluctuating measuring values
(e.g. mechanical problems)
Prerequisite: Exceptional situation till correction of the problem.
A reduction of the process reliability is hereby taken into account by the operator.
Implementation: Expand the 1-sheet area temporarily.
„moving average above xx ms“
Defines the time which is required by the system to perform an average measurement.
See chapter 8.3 “Averaging time t
a
and Measuring time t
m
”
Manual
Double Sheet Control System R1000 series L20
with integrated fieldbus interface
B0063191 / 1.3
Mounting
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4 Mounting
The mounting of the Double Sheet Detector R1000 L20 determines the measurement accuracy
and the reliability of operation. The system was designed for operating in rough industrial
environments. However, the following mounting instructions should be observed in order to
minimize mechanical, thermal, and electromagnetic influences on the operation.
4.1 General mounting instructions
The enclosure for wall mounting meets IP65 and is designed for mounting the enclosure close to
the sensor location. By using short sensor cables, the influence of interference on data
transmission is reduced.
The control unit should be installed in locations where no vibration exists and no additional heat is
transferred into the system (even better reduce the heat in the control unit). In addition the control
unit should be installed in such a fashion that it can be easily opened for service purposes. During
the operation the control unit and the sensors should be under visual control of the operating
personnel.
Attention Strong vibrations and additional heat can damage the control unit.
Manual
Double Sheet Control System R1000 series L20
with integrated fieldbus interface
Mounting B0063191 / 1.3
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4.2 Dimensions of the system
4.2.1 Dimensions of the unit in industrial enclosure
1-channel unit L20-XX-S and 3-channel unit L20-3-XX-S
Fig. 7: Dimensions of the 1-channel unit in wall mount enclosure in mm.
* L20-XX-S: 112 mm
L20-3-XX-S: 132 mm
Note Observe the clearance for connecting the plugs.
Manual
Double Sheet Control System R1000 series L20
with integrated fieldbus interface
B0063191 / 1.3
Mounting
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4.3 Mounting of sensors
The sensors must be installed opposite each other in alignment. If circumstances require it, the
mechanical mounting angles can be rotated or swapped.
To ensure an accurate measurement, ensure that the laser axes of the two sensors are identical
(on each other). For this purpose Roland Electronic provides the bracket SHLAS40H, which allows
easy alignment (not shown). The sensors provided within the sensor system LAAS40 have already
been aligned using the bracket SHLAS40H.
For an initial installation, they can be mounted directly. If the sensors are adapted or exchanged,
they must be aligned before mounting.
The provided bracket SHLAS40H is not shown above.
All dimensions in mm.
Fig. 8: Dimensions of the sensors
To prevent contamination of the sensors it is necessary to provide a continuous air blow-off.
See chapter 4.3.8 "Air blow-off for laser sensors".
Attention In general baffles must be mounted in order to prevent damage to
the sensors at incoming coil / sheet.
Manual
Double Sheet Control System R1000 series L20
with integrated fieldbus interface
Mounting B0063191 / 1.3
20
ROLAND ELECTRONIC GmbH · Otto-Maurer-Str. 17 · DE 75210 Keltern · Phone +49 (0)7236-9392-0 · Fax +49 (0)7236-9392-33
4.3.1 Procedure at mounting
The alignment-bracket must be removed only at the end of the mounting process!
1. Screw the sensors loosely on the angles.
2. Screw the angles to the system, but do not tighten the screws. Make sure that no mechanical
tension occurs between the sensor enclosures.
3. Tighten all screws. Take care that no tensions persist between the parts.
4. Finally remove the alignment-bracket.
5. At L20-3-XX-S with LAAS40+:
Verify sensor alignment with adjust parameter 4, “alignment”.
Attention After mounting a measuring point calibration should be performed to
the L20. See also chapter 8.4 "Measuring point calibration".
4.3.2 Alignment of the sensors at remounting, exchange or change
1. For alignment of the sensors place the sensors one to each other with the mounting side on a
adjusting plate or an equally smooth surface.
2. Lay a gauge block or equivalent with 40 mm between the sensors.
3. Screw the adjustment-bracket tight. The screws may be screwed in this case depending on the
mounting situation from both sides in order to be easily removed after the alignment. Thereby
make sure that the sensors lay plane to the plate and fit firmly against the gauge block.
4. Fasten the sensor pair as described previously.
Attention After mounting a measuring point, a calibration should be performed
to L20. See also chapter 8.4 "measuring point calibration".
4.3.3 Control of the laser beam axis
After mounting or adjusting a sensor it might be necessary to control the axis of the laser beam.
In the program switch the „sensor alignment help“ on, see chapter 7.4.3 substructure „alignment
parameters“ (details in chapter 7.8)
To check hold a non-reflective piece of paper at various points in the beam. The sensors will flash
alternately. The laser beam is visible through the paper, so that a properly aligned system should
have no offset between the two points on the paper. At a larger displacement or angular deviation
of the laser beam, an inclined position of the sheet can lead to variations in measurements.
At an offset of several millimetres, the sensors should be realigned. At usage of LAAS40+, the
alignment can be verified with adjust parameter 4, “alignment”.
Warning – Laser radiation!
Eye hazard from laser radiation. Do not stare into the laser beam.
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