Instruction Manual
SL mini and SLR mini Series Speed and Length
Gauges
Issue 1s
5 December 2016
Proton Products International Ltd.
www.protonproducts.com
Proton Products SL mini and SLR mini Series Speed and Length Gauges Instruction Manual - issue 1s
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Table of Contents
DECLARATION OF CONFORMITY (CE) .......................................................... 5
DECLARATION OF CONFORMITY (CSA) ....................................................... 6
LASER SAFETY PARAMETERS ...................................................................... 7
INTRODUCTION ................................ .......................................................... 8
PRINCIPLE OF OPERATION.......................................................................... 8
SPECIFICATIONS........................................................................................ 9
MODEL-SPECIFIC SPECIFICATIONS ......................................................................................................... 9
COMMON SPECIFICATIONS ..................................................................................................................... 9
DIMENSIONAL DRAWINGS ......................................................................... 11
ANNOTATED DRAWINGS ........................................................................... 12
TOP VIEW ........................................................................................................................................... 12
FRONT VIEW ....................................................................................................................................... 12
REAR VIEW ......................................................................................................................................... 13
UNDERSIDE VIEW ................................................................................................................................ 13
LED INDICATORS ................................................................................................................................ 14
ON-GAUGE LCD DISPLAY ........................................................................ 14
OPTIONAL ACCESSORIES ................................ ......................................... 15
DISPLAY ............................................................................................................................................. 15
POWER ............................................................................................................................................... 17
COMMUNICATIONS............................................................................................................................... 18
STANDS AND GUARDS ......................................................................................................................... 18
PROTECTION ....................................................................................................................................... 19
COOLING ............................................................................................................................................ 20
INSTALLATION ......................................................................................... 21
PRECAUTIONS ..................................................................................................................................... 21
Operating and storage temperature ........................................................................................................... 21
Protect from impact .................................................................................................................................... 21
Do not open or disassemble ........................................................................................................................ 21
Periodic maintenance .................................................................................................................................. 22
Laser radiation hazard ................................................................................................................................ 22
Optical windows .......................................................................................................................................... 23
OPTICAL WINDOW CLEANING PROCEDURE ............................................................................................. 24
INSTALLATION SEQUENCE .................................................................................................................... 24
MECHANICAL INSTALLATION ................................................................................................................. 25
Stand-off distance and depth-of-field ......................................................................................................... 25
Object stabilisation ..................................................................................................................................... 26
Optical alignment ........................................................................................................................................ 27
MEASUREMENT DIRECTION ...................................................................... 29
SL MINI UNIDIRECTIONAL SPEED AND LENGTH GAUGE .......................................................................... 29
SLR MINI BIDIRECTIONAL SPEED AND LENGTH GAUGE .......................................................................... 30
Mechanical mounting ................................................................................................................................. 30
ELECTRICAL INSTALLATION .................................................................................................................. 31
Earth connection ......................................................................................................................................... 31
Shielded Cables ........................................................................................................................................... 31
LASER ENABLE ................................................................................................................................... 32
SHUTTER CONTROL SWITCH, SHUTTER ENABLE INPUT AND SHUTTER STATE OUTPUT ........................... 33
SHUT_EN input electrical specifications ...................................................................................................... 33
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SHUT_ST output electrical specifications .................................................................................................... 34
POWER SUPPLY .................................................................................................................................. 36
Powering on the gauge ............................................................................................................................... 36
Powering off the gauge ............................................................................................................................... 36
CONFIGURATION ..................................................................................... 37
PCIS_SLMINI SOFTWARE PC SYSTEM REQUIREMENTS ......................................................................... 37
PCIS_SLMINI SOFTWARE INSTALLATION .............................................................................................. 37
CONNECTION AND SOFTWARE START UP ............................................................................................... 38
WIFI CONFIGURATION .......................................................................................................................... 41
PCIS_SLMINI MAIN PAGE ....................................................................... 45
TREND GRAPH .................................................................................................................................... 46
Context menu .............................................................................................................................................. 47
Settings........................................................................................................................................................ 48
MEASUREMENT CONFIGURATION .............................................................. 51
Normal Operation Mode ............................................................................................................................. 54
Batch Operation Mode ................................................................................................................................ 54
Object Detection Mode ............................................................................................................................... 55
STANDARD COMMUNICATIONS INTERFACES ................................ ............... 57
CAN-BUS COMMUNICATIONS ............................................................................................................... 57
CAN-bus interface ....................................................................................................................................... 57
CAN-bus LED indicator ................................................................................................................................ 57
CAN-bus configuration ................................................................................................................................ 58
RS-232 COMMUNICATIONS ................................................................................................................. 60
RS-232 interface .......................................................................................................................................... 60
RS-232 Communications configuration ....................................................................................................... 61
RS-232 Printing ............................................................................................................................................ 62
Proton standard RS232 parameter access protocol .................................................................................... 65
Modbus parameter access protocol ............................................................................................................ 67
ETHERNET COMMUNICATIONS .............................................................................................................. 71
Ethernet interface ....................................................................................................................................... 71
Ethernet LED indicator ................................................................................................................................ 71
Ethernet configuration ................................................................................................................................ 72
Input Parameter Write Disable ................................................................................................................... 74
UDP Protocol ............................................................................................................................................... 76
OPTIONAL COMMUNICATIONS INTERFACES ................................................ 78
PROFIBUS COMMUNICATIONS ............................................................................................................ 78
PROFIBUS interface ..................................................................................................................................... 78
PROFIBUS LED indicator .............................................................................................................................. 78
PROFIBUS configuration .............................................................................................................................. 79
ETHERNET / IP OR PROFINET COMMUNICATIONS ............................................................................... 80
EtherNet / IP or PROFINET interface ........................................................................................................... 80
EtherNet / IP or PROFINET LED indicator .................................................................................................... 81
EtherNet / IP or PROFINET configuration .................................................................................................... 81
DEVICENET COMMUNICATIONS ............................................................................................................. 83
DeviceNet interface ..................................................................................................................................... 83
DeviceNet LED indicator .............................................................................................................................. 83
DeviceNet configuration.............................................................................................................................. 84
STANDARD ELECTRICAL INTERFACES ........................................................ 86
LOGIC INPUTS ..................................................................................................................................... 86
Logic inputs connection ............................................................................................................................... 86
Logic inputs configuration ........................................................................................................................... 87
LOGIC OUTPUTS ................................................................................................................................. 91
Logic outputs connection ............................................................................................................................ 91
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Logic outputs electrical specifications ......................................................................................................... 91
Logic outputs configuration ........................................................................................................................ 92
PULSE OUTPUTS ................................................................................................................................. 95
Pulse outputs connection ............................................................................................................................ 95
Pulse outputs electrical specifications ......................................................................................................... 96
DATA LOGGING ..................................................................................... 103
CONNECTOR PIN OUTS ........................................................................... 105
OPTIONAL PSU-BOB MINI ..................................................................... 106
CAN ................................................................................................................................................ 106
RS232 ............................................................................................................................................. 106
I-BUS ............................................................................................................................................... 107
RJ45 SOCKET .................................................................................................................................. 107
SCREW TERMINALS ........................................................................................................................... 108
KEY SWITCH ...................................................................................................................................... 109
DIMENSIONAL DRAWING ..................................................................................................................... 110
INPUT PARAMETERS ............................................................................... 111
OUTPUT PARAMETERS ........................................................................... 114
APPENDIX 1: HIGH ACCURACY LENGTH MEASUREMENT OF DISCRETE OBJECTS
APPLICATION NOTE ................................................................................ 116
PROBLEM ......................................................................................................................................... 116
SOLUTION ......................................................................................................................................... 116
IMPLEMENTATION .............................................................................................................................. 117
Connections to the SL / SLR / SL mini / SLR mini gauge ............................................................................. 118
Logic input electrical characteristics ......................................................................................................... 119
Gauge software configuration .................................................................................................................. 119
EXAMPLE IMPLEMENTATION USING BANNER QS18 LASER EMITTERS AND QS186LE NPN SENSORS ..... 121
SL mini / SLR mini configuration ................................................................................................................ 122
CONTACT DETAILS FOR ENQUIRIES, SALES AND SERVICE ........................... 126
WEB SITE .......................................................................................................................................... 126
ENQUIRIES AND SALES ....................................................................................................................... 126
SERVICE ENQUIRIES .......................................................................................................................... 126
MANUAL FEEDBACK AND COPYRIGHT ...................................................... 126
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Product name
Description
Part number
SL mini 1220
Unidirectional non-contact speed and length gauge (stand-off
distance: 120mm, depth-of field: 20mm)
00050MC001
SL mini 3060
Unidirectional non-contact speed and length gauge (stand-off
distance: 300mm, depth-of field: 60mm)
00050MC002
SLR mini 1220
Bidirectional non-contact speed and length gauge (stand-off
distance: 120mm, depth-of field: 20mm)
00050MC011
SLR mini 3060
Bidirectional non-contact speed and length gauge (stand-off
distance: 300mm, depth-of field: 60mm)
00050MC012
DECLARATION OF CONFORMITY (CE)
This is to certify that the following equipment conforms to the requirements of
CE including EMC to the heavy industrial standard Class A.
Equipment Covered
The manufacturer of the above named equipment is:
Proton
Proton Products is an ISO9001:2008 registered company.
The declaration is signed by:
Paul Alexander Sives ………………………
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This is to certify that the following equipment has been manufactured in
compliance with the standards for Machine Safety and Workplace Electrical
Safety according to the CSA (Canadian Standards Association).
Product name
Description
Part number
SL mini 1220
Unidirectional non-contact speed and length gauge (stand-off
distance: 120mm, depth-of field: 20mm)
00050MC001
SL mini 3060
Unidirectional non-contact speed and length gauge (stand-off
distance: 300mm, depth-of field: 60mm)
00050MC002
SLR mini 1220
Bidirectional non-contact speed and length gauge (stand-off
distance: 120mm, depth-of field: 20mm)
00050MC011
SLR mini 3060
Bidirectional non-contact speed and length gauge (stand-off
distance: 300mm, depth-of field: 60mm)
00050MC012
DECLARATION OF CONFORMITY (CSA)
Equipment Covered
The manufacturer of the above named equipment is:
Proton
Proton Products is an ISO9001:2008 registered company.
The declaration is signed by:
Paul Alexander Sives ………………………
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Parameter
Model
Minimum
Typical
Maximum
Units
Wavelength
All
650
658
670
nm
Beam diameter
All 3 mm
Spot size at standoff distance
All 3 mm
Beam divergence
All
1.5
mrad
Total emitted power
SL mini
40
mW
SLR mini
80
mW
Emitted power per beam
(2 beams are emitted)
SL mini
20
mW
SLR mini
40
mW
Power density at gauge window
(normal operation)
SL mini
280
mW/cm2
SLR mini
560
mW/cm2
Power density at gauge window
(absolute maximum)
SL mini
560
mW/cm2
SLR mini
1120
mW/cm2
Power density at standoff distance
SL mini
560
mW/cm2
SLR mini
1120
mW/cm2
Nominal hazard zone (NHZ) distance
(diffuse surface reflection)*
All
20 to 100
mm
Nominal hazard zone (NHZ) distance
(specular / reflective surface reflection)
All
150
m
LASER S AFETY P ARAMETERS
www.protonproducts.com
Proton Products SL mini and SLR mini series laser speed and length gauges emit laser radiation with
the following parameters:
*this distance is highly dependent on the nature and type of diffuse surface.
For further inform ation, please contact your Proton Products representative or Proton Products
M anufacturer signature:
Paul Alexander Sives: ………………………
Proton Products is an ISO9001:2008 registered company.
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INTRODUCTION
The Proton Products SL mini and SLR mini series of laser speed and length gauges provide highlyaccurate, non-contact speed and length measurement.
SL mini series gauges offer speed and length measurement for unidirectional production lines.
SLR mini series gauges offer speed and length measurement for bidirectional production lines. The
gauge senses the direction of motion and will automatically increment or decrement the length
accordingly. SLR mini gauges are thus suitable for production lines that undergo direction reversals or
stationary (zero speed) periods.
Compared to traditional contact wheel encoders, SL mini / SLR mini non-contact speed and length
gauges offer the following advantages:
Capable of measurement at much higher speeds and accelerations
No slippage
Greater accuracy
No wear or damage to the measured object
Solid state design results in higher reliability and MTBF
RS-232 and Ethernet communication interfaces are installed as standard for straightforward
connection to computers or PLCs. One optional industrial standard communication interface
(PROFIBUS, EtherNet/IP or DeviceNET; replaces the standard Ethernet interface) may also be
installed in the gauge.
User configurable digital inputs are provided as standard to reset gauge measurements and trigger
printing. User configurable digital outputs are provided as standard to signal gauge status and preset
length reached.
PRINCIPLE OF OPERATION
SL mini series unidirectional speed and length gauges illuminate the measured surface with a
precisely pitched interference pattern created by the intersection of two laser beams. The alternating
bright and dark interference fringes modulate the light scattered by the object with a frequency
proportional to the object speed. This scattered light is detected by a photodiode and the electrical
signal digitally processed to determine the frequency and hence the speed. Object length is then
calculated by integrating the speed measurement over time.
SLR mini series bidirectional speed and length gauges extend this principle by using a high-frequency
Bragg cell modulator to illuminate the measured surface with a scanning interference pattern, which
generates an oscillating light signal even when the object is stationary. Direction of motion is
determined by whether the scattered light frequency is higher or lower than the stationary frequency.
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Specification
Unidirectional – SL mini
Bidirectional – SLR mini
Units
1220
3060
1220
3060
Minimum speed
0.1
0.25 0 0
m/min
Maximum speed
2000
5000
±2000
±5000
m/min
Nominal stand-off distance
120
300
120
300
mm
Depth of field
20
60
20
60
mm
Specification
Minimum
Typical
Maximum
Units
Accuracy
-0.05
0.05
%
Repeatability
-0.02
0.02
%
Acceleration
1000
m/s2
Measurement update time
20
µs
Laser beam diameter
3
mm
Laser classification
3B
-
Operating temperature
+5 +40
°C
Environmental protection
IP67
-
Power supply voltage
15
24
28
VDC
Power consumption
15
W
Length
140
mm
Width
105
mm
Height
50
mm
Measurement display
Integrated backlit LCD
Pulse outputs
2× RS-422 compliant differential pair outputs with
maximum pulse rate < 2 MHz (cable length dependent),
end-user configurable as:
2× independent pulse outputs
1× quadrature output
Laser safety
Laser enable input
Open shutter input
SPECIFICATIONS
MODEL-SPECIFIC SPECIFICATIONS
COMMON SPECIFICATIONS
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Shutter status output
3× Logic inputs (end-user configurable
functions)
Reverse Direction
Length Hold
Reset
Speed Hold
End of Reel
Display Hold
2× Logic outputs (end-user configurable
functions)
Gauge OK
Gauge too hot
Good reading
Object detected
Preset length 1 / Batch length reached
Preset length 2 / Batch number reached
Gauge measuring speed
Standard communications interfaces
RS-232*
CANbus**
Ethernet TCP/IP (Modbus protocol)
Optional communications interface (select
one; replaces the Ethernet interface)
PROFIBUS
PROFINET
DeviceNet
EtherNet/IP
*An optional RS-232-to-USB converter cable is available for connection to USB equipped computers.
**CAN-bus protocol is proprietary and reserved for connection to other Proton Products equipment
such as a CDI interface display unit.
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DIMENSIONAL DRAWINGS
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Label
Description
1
LED indicators
2
LCD display
3
Tamper-evident seal (×2; damage to or removal will invalidate the product warranty)
Label
Description
1
Optional air wipe / beam enclosure tube mounting holes (×4)
2
Optical window
3
Laser shutter control switch
Switch status
Laser shutter status
Laser beam status
Out
Closed
Blocked
In
Open
Emitting
1 2 3
1
2
3
ANNOTATED DRAWINGS
TOP VIEW
FRONT VIEW
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Label
Description
1
Earthing bolt
2
“INTERFACE” connector port
3
Nitrogen gas purge port (for factory use only; any attempt to open or connect to this port will
invalidate the product warranty)
Label
Description
1
M5 threaded mounting hole (×3)
2
¼”-20 UNC threaded tripod mounting hole
3
Communications module compartment cover
4
Nitrogen gas purge port (for factory use only; any attempt to open or connect to this port will
invalidate the product warranty)
1 2 3 3 1 1 2
1
4
REAR VIEW
UNDERSIDE VIEW
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Label
Condition
Description
LASER
Extinguished
No laser emission
Yellow
Laser emission
CAN
Extinguished
No CANbus connection
Green
CANbus connected
EIP
Extinguished
No Ethernet connection
Green
Ethernet connected
Flashing red
Ethernet data transmission
i-BUS
Extinguished
Optional DeviceNET / PROFIBUS / PROFINET / EtherNet/IP not connected
Green
Optional DeviceNET / PROFIBUS / PROFINET / EtherNet/IP connected
Label
Description
S
Measured speed
L
Measured length
GR
Good Readings percentage
SNR
Signal-to-Noise Ratio
Reset button
Press to reset the length to zero.
Pause button
Press to pause the speed measurement.
LED INDICATORS
ON-GAUGE LCD DISPLAY
The SL mini and SLR mini gauges are fitted with a backlit, on-gauge LCD which displays the following
information:
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AiG2-SL/SLR
Display module
Connects via the CAN-bus port.
Displays measured speed and length.
Provides menu-based setting of all parameters.
Bright VFD dot matrix display.
Proton part number
00041MC045
AiG2 Panel Mount Kit
Bracket for mounting the AiG2 to an end-user panel.
Proton part number
00041MC049
CAN-bus cable
Name
Length / m
Proton part number
CAN 9DD_001M
1
00041CB001
CAN 9DD_005M
5
00041CB005
CAN 9DD_010M
10
00041CB010
CAN 9DD_020M
20
00041CB020
CAN 9DD_040M
40
00041CB040
CAN 9DD_060M
60
00041CB060
CAN 9DD_100M
100
00041CB100
OPTIONAL ACCESSORIES
DISPLAY
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PCiS_SL/SLR mini
PC Interface Software
PC-based software package.
User-friendly graphical user interface.
Displays all measurements.
Provides menu-based setting of all parameters.
Provides trending, data logging, presets and alarms.
Gauge to PC connection via RS-232.
Proton part number
00050SW001
7”Touch Screen PC
Industrial PC
For running the above PCiS_SL/SLR mini software
User-friendly graphical user interface.
Displays all measurements.
Provides menu-based setting of all parameters.
Provides trending, data logging, presets and alarms.
Gauge to PC connection via RS-232 or optional RS-
232-to-USB interface cable (RSCon).
Proton part number
00043MC029
USB-RS232 Cable
For connecting the RS232 port of the PSU-BOB mini to
the 7″ Touch Screen PC.
Length: 1.8m.
Proton part number
GP00000624
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PSU-BOB mini
Power supply and mini break out box
Connects via the DB25 “INTERFACE” connector.
Supplies 24VDC electrical power to the gauge.
Provides screw terminal access to all electrical
interfaces.
Provides DB9 connectors for access to the CANbus,
RS232 and industrial bus communications interfaces.
Provides a RJ45 socket for the Ethernet interface.
End user cables are sealed with three cable glands.
Input voltage range: 90 – 260 VAC @ 45 – 65 Hz.
Select the required length of DB25 cable from below.
Proton part number
00050MC039
DB25 “INTERFACE” port to PSU-BOB mini cable
Name
Length / m
Proton part number
BOB 25DD_001M
1
00041CT001
BOB 25DD_003M
3
00041CT003
BOB 25DD_005M
5
00041CT005
BOB 25DD_010M
10
00041CT010
BOB 25DD_020M
20
00041CT020
BOB 25DD_030M
30
00041CT030
Terminal Expander
Gauge-mounted break-out box
Connects via the DB25 “INTERFACE” connector.
Provides DB9 connector access to the RS-232, CAN-
bus, Ethernet or optional industrial bus communications
ports.
Provides screw terminal access to all electrical input
and output pins.
End user cables are sealed with cable glands.
Proton part number
00050MC039
POWER
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Industrial Bus Module
For connecting the gauge to industrial communications
buses, such as used with PLCs.
May be field retrofitted.
Protocol
Proton part number
DeviceNET
00043MC006
PROFIBUS
00043MC022
PROFINET
00043MC031
EtherNet/IP
00043MC005
Base Plate
For securing a SL/SLR mini gauge to a mounting
surface.
Proton part number
00050MC042
Vibration reducing kit
For use with the above Base Plate (00050MC042) in
high-vibration environments.
Proton part number
00050MC043
3D Adjuster Plate
For use with the above Base Plate (00050MC042) for
precision alignment of the SL/SLR mini gauge to the
measured object.
Provides ±3° of roll and yaw adjustment.
Proton part number
00050MC044
COMMUNICATIONS
STANDS AND GUARDS
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Laser Protection Tube for SL/SLR mini 1220
Enclosure of the laser beam to within 10mm of the
object for laser safety and harsh environments.
Proton part number
00050MC033
Laser Protection Tube for SL/SLR mini 3060
Enclosure of the laser beam to within 10mm of the
object for laser safety and harsh environments.
Proton part number
00050MC037
Air wipe
High-efficiency, air-wiped protection window for
dusty/steamy environments with a quick-change
window release mechanism.
Provides an 8 mm push fit tube fitting to connection to a
clean air source.
Proton part number
00050MC034
Specification
Maximum
Units
Class
0.1 - 0.5 μm solid particle count
100
/ m3
1
0.5 - 1 μm solid particle count
1
/ m3
1 - 5 μm solid particle count
0
/ m3
Water vapour pressure dew point
-20
°C
3
Oil aerosol and vapour
0.01
mg / m3
1
PROTECTION
Air quality must meet or exceed ISO 8573.1:2001 Class 1.3.1 (solids.water.oil):
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Cooling Plate
Air or water cooled plate for installation between the
gauge and mounting surface.
For use in ambient temperatures up to 60°C.
Proton part number
00050MC031
COOLING
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Specification
Minimum
Typical
Maximum
Units
Operating temperature
+5 +45
°C
Storage temperature
0 +45
°C
Fragile
Do not drop
Protect from impact and
mechanical shock
INSTALLATION
PRECAUTIONS
Operating and storage temperature
Do not store or operate the gauge in temperatures outside of the specified ranges.
Do not install the gauge near high temperature surfaces or objects which may cause it to
overheat.
Storage or operation of the gauge outside the specified temperature range may result in
degraded measurement accuracy, malfunction or damage to the gauge.
All gauges are fitted with internal temperature sensors which will permanently log any over-
temperature condition that invalidates the warranty.
Protect from impact
The gauge contains delicate optical and electronic assemblies and must never be dropped or
struck by other objects.
Only install the gauge on its mounting/stand when all machining, assembly and transportation
of the mounting/stand has been completed.
Do NOT strike, move or perform machining operations on the mounting/stand with the gauge
installed.
Damage incurred by the gauge as a result of impact, mechanical shock or rough handling is
NOT covered by the manufacturer’s warranty.
Do not open or disassemble
The gauge contains no user serviceable components.
Loosening the gauge screws or removing its cover will invalidate the gauge warranty.
Damage to or removal of any of the anti-tamper stickers will invalidate the gauge warranty.
The gauge is factory-purged with dry nitrogen gas to prevent condensation on the internal
optics; opening of the gas purge ports (indicated below) will invalidate the gauge warranty.
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WARNING: Do NOT attempt to open either of the gas purge ports indicated below:
Rear view
Underside view
Safety
Measure
Description
Provided
by
Laser Safety
Officer
A Laser Safety Officer (LSO) must be appointed by the end-user
organisation and is responsible for ensuring that both the equipement
and staff comply with laser safety regulations.
End-user
Laser safety
training
The end-user organisation must provide appropriate laser safety
training for all operators and maintenance personnel working in close
proximity to the gauge.
End-user
Laser enable
key-switch
A key-switch to disable the laser diode should be wired to the LSR_EN
input. The laser safety officer should be responsible for the key and
must withhold it during system maintenance or it the system fails to
comply with laser safety regulations.
End-user
A laser enable key-switch is provided on the optional PSUBOB-mini.
Proton
Contain and
terminate
beam path
Terminate the laser beams at the end of their useful length (behind the
measured object) with a beam block.
Contain laser beam paths with laser guards which have closure
switches wired to the SHUT_EN input so that the laser shutter is closed
End-user
Periodic maintenance
The physical condition of the gauge, optional accessories and connecting cables should be
checked periodically; if any damage is suspected, then the unit should be taken out of service
for inspection and repair or replacement of damaged parts.
Laser radiation hazard
This product emits class 3B laser radiation; do not view the laser beams emitted by the gauge
either directly or by specular reflection.
For all class 3B laser devices, the safety measures below MUST be provided. Some
measures are the responsibility of the device manufacturer (Proton Products), whilst other
measures are the responsibility of the end-user.
For further information on laser safety, please refer to European standard BS EN 60825-
1:2007 “Safety of laser products; Part 1: Equipment classification, requirements and user’s
guide”.
Proton Products SL mini and SLR mini Series Speed and Length Gauges Instruction Manual - issue 1s
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Safety
Measure
Description
Provided
by
if any guard is opened.
Do NOT permit the laser beams to be directed into open space.
Prevent
specular
(mirror-like)
reflections
Never direct the laser beams at specular (mirror-like) reflectors.
Remove all reflective objects such as jewellery or wristwatches before
working near the laser beams.
End-user
Emission
indicator
Illumination of the “LASER” LED on the gauge indicates laser emission.
Proton
An external laser emission warning light may be triggered by the
SHUT_ST output.
End-user
Laser shutter
switch
The switch to the side of the laser window opens or closes the laser
shutter which blocks laser emission.
Proton
If the gauge is to be mounted in an inaccessible location, then this
switch should be set to the open position and a remote, external laser
shutter switch wired to the SHUT_EN input.
End-user
Laser
protection
eyewear
Laser protection eyewear rated with the Optical Density (OD) rated for
Class 3B lasers must be worn whenever there is a risk of eye exposure
to the laser, for example during gauge alignment (see the “Laser Safety
Parameters” section for information on laser wavelength, power and
power densities).
End-user
Laser
warning signs
Class 3B laser warning signs must displayed in the working area;
precautions on the warning signs must be followed.
End-user
Example class 3B laser warning signage:
US standard
European standard
Optical windows
Do not allow smoke, water, steam, dust or other debris to come into contact with any of the
optical window.
Obstruction of the optical window may degrade measurement accuracy or inhibit
measurement.
If the optical window appears to be damaged or misaligned, then the unit should be sent to a
Proton Products authorised service agent for repair.
If the optical window requires cleaning, then refer to the cleaning procedure detailed below to
minimise the risk of scratching the windows.
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Required items
Notes
Small blower brush
Such as the type used to remove dust from camera lenses.
Lens cleaning tissues or
micro-fibre lens cleaning cloth
Do NOT use facial tissues as these can scratch delicate optics.
Lens cleaning solution
Such as the type specified for cleaning camera lenses.
OPTICAL WINDOW CLEANING PROCEDURE
The optical window is manufactured from anti-reflection coated optical glass; it must be
treated with the same level of care as a high-performance camera lens.
Before inspecting or cleaning the optical window, ensure that the gauge is powered
off, the LSR_EN key-switch is locked out and no laser light is emitted.
1. Use the small blower brush to remove any visible dust on the optical window.
2. Apply a few drops of lens cleaning solution to a fresh lens cleaning tissue or a clean microfibre lens cleaning cloth.
3. Gently wipe the optical window from the centre outwards; apply only light pressure to the
tissue or cloth when wiping the optical window.
4. Repeat as necessary with fresh tissues or a clean section of cloth until the optical window is
clean and free of all smears and smudges.
INSTALLATION SEQUENCE
Unpack the gauge and check for missing accessories and shipping damage.
Mechanical installation:
1. Mount the gauge securely either on a user supplied mount or on an optional Proton Products
mounting plate.
Electrical installation:
1. Install earth connections.
2. Connect the gauge to an optional Proton Products PSU-BOB mini power supply and breakout box.
3. Install laser safety connections (laser enable, shutter enable and shutter status).
4. Install communications interface connections (RS-232, Ethernet or optional PROFIBUS,
PROFINET, EtherNet/IP or DeviceNET).
5. Install electrical interface connections (logic inputs, logic outputs, pulse outputs) using the
optional Proton Products PSU-BOB mini breakout box or terminal strip.
6. Connect a PC installed with the PCiS_SLmini software to the gauge via the RS-232, Ethernet
or optional PROFINET or EtherNet/IP communications interface.
7. Configure the gauge using the PCiS_SLmini software.
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Model
Stand-off distance / mm
Depth-of-field / mm
SL mini 1220
SLR mini 1220
120
20
SL mini 3060
SLR mini 3060
300
60
Stand-off distance
Depth-of-field
Ideal object location
MECHANICAL INSTALLATION
Stand-off distance and depth-of-field
For best accuracy, locate the measured object at the specified stand-off distance to the
gauge.
Speed and length measurement is possible for objects located away from the specified stand-
off distance but still within the depth-of-field; however the measurement accuracy may be
degraded by the reduced signal strength.
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Incorrect
Correct
Object stabilisation
For accurate speed and length measurements, the distance between the measured object and the
gauge must be kept constant; the measured object must be guided to prevent flutter:
The end-user must provide suitable mechanisms for guiding and stabilising the motion of the
measured object.
Proton Products SL mini and SLR mini Series Speed and Length Gauges Instruction Manual - issue 1s
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Correct Gauge Alignment
Roll alignment
Yaw alignment
Pitch alignment
Ideal
Acceptable for γ within ±5°
(γ ≠ 0 may be used to prevent receiver
saturation for highly-reflective objects)
Incorrect Gauge Alignment
Roll cosine error
Yaw cosine error
90°
90° γ 90°
α
β
90°
Optical alignment
Non-perpendicular alignment of the speed and length gauge to the measured object will degrade
measurement accuracy; it is recommended the gauge is installed and aligned by technicians with
metrology experience who understand the implications of even a small angular misalignment.
Proton Products SL mini and SLR mini Series Speed and Length Gauges Instruction Manual - issue 1s
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Compounded roll and yaw cosine error
Measured speed = (True object speed) × cos (α) × cos (β)
Error angle α or β / degrees
cos (α) or cos (β)
Measurement error / %
0
1.000000
0.000
0.25
0.999990
-0.001
0.50
0.999962
-0.004
0.75
0.999914
-0.009
1.0
0.999848
-0.015
2.0
0.999391
-0.061
3.0
0.998630
-0.137
4.0
0.997564
-0.244
5.0
0.996195
-0.381
10
0.984808
-1.519
Proton Products SL mini and SLR mini Series Speed and Length Gauges Instruction Manual - issue 1s
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SL mini
Left to right
Right to left
Object motion direction
Count
Input
DW12.12
Rev
Direction
logic input
Speed
Length
Speed
Length
[Up]
[0]
Inactive
Positive
Incrementing
Positive
Incrementing
Down
1
Active
Negative
Decrementing
Negative
Decrementing
MEASUREMENT DIRECTION
SL MINI UNIDIRECTIONAL SPEED AND LENGTH GAUGE
The unidirectional SL mini speed and length gauge interprets motion in either direction as a positive
speed and an increase in length, thus correct length accumulation requires that the object must only
move in one direction (reverse motion will incorrectly cause the length to increment, not decrement).
Length measurements during line stoppage may exhibit a positive error due to microscopic vibration
of the object; hence it is recommended that the “Length hold” function on the SL mini logic input is
activated by the line controller when the line is stationary to temporarily suspend speed measurement
and length accumulation.
For production lines that require correct length accumulation during direction reversals or line
stoppage (without using the “Length hold” function), it is recommended that the SLR mini is used.
[ ] factory-default setting
Proton Products SL mini and SLR mini Series Speed and Length Gauges Instruction Manual - issue 1s
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SLR mini
Left to right
Right to left
Object motion direction
Count
Input
DW12.12
Rev
Direction
logic input
Speed
Length
Speed
Length
[Up]
[0]
Inactive
Negative
Decrementing
Positive
Incrementing
Down
1
Active
Positive
Incrementing
Negative
Decrementing
Specification
Minimum
Typical
Maximum
Unit
Mounting surface flatness (machined flat and even)
0.15
mm
M5 mounting hole depth (do not allow bolts to bottom out)
6
mm
M5 mounting bolt torque
6
Nm
SLR MINI BIDIRECTIONAL SPEED AND LENGTH GAUGE
The bidirectional SLR mini speed and length may be used for production lines that exhibit bidirectional
motion and line stoppage.
[ ] factory-default setting
Mechanical mounting
It is preferable for the gauge to be mounted in isolation from the machine or production line using a
precision base plate fitted to a mounting arm (if this is not possible then the gauge must be mounted
on rubber vibration isolation mounts).The mounting arm should be kept as short as possible to avoid
vibration or twisting.
Please see the dimensional drawings for mounting hole locations.
Three M5 tapped holes are provided in the base of the gauge; select appropriate length
screws which do not bottom out in these holes.
Proton Products SL mini and SLR mini Series Speed and Length Gauges Instruction Manual - issue 1s
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