Optex CVS2 User manual

DISPLAY ON LCD SCREEN
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5
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Basic Information Before Use
Display on LCD Screen
Distinction by
Patterns Recognition
Use of Applied Functions
Changing Set Value
Troubleshooting
Appendix
COLOR VISION SENSOR SERIES
Patterns Recognition
Sensor
Instruction Manual
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FOREWARD
• Thank you for purchasing our color vision sensor series Patterns
Recognition Sensor (CVS2).
• Carefully read this manual before using this device for correct use.
• After reading this manual, keep it handy for ready reference.
• This device cannot be used as a safety-related device to protect human
body.
Legend of Safety Symbols
In this manual, various symbols are used for safe use of the device,
preventing the harm to you and other persons as well as the damage to the
property.
Symbols and their meanings are as follows. Before reading this manual,
fully understand the meanings of these symbols.
Indicates a possible hazard that may result in death or
serious injury if the device is used incorrectly without
observing stated instructions.
Indicates a possible hazard that may result in any injury or
property damage if the device is used incorrectly without
observing the stated instructions.
Indicates precautions and regulations to be observed or other
information useful to know.
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PRECAUTIONS FOR SAFE USE
• Do not disassemble nor modify the device.
Otherwise, it may cause a re or an electric shock.
• Continuing to use the device under abnormal
conditions, such as those with abnormal smell or
smoke, may cause a re or an electric shock. In
such cases, immediately pull out the power plug and
conrm that the abnormal condition is removed, and
then contact us or our sales representative. Never
repair the device by yourself since it is dangerous.
• Do not use the device by a power voltage outside
12-24 V DC. It may cause a re or an electric shock.
• Avoid wiring a cable and high-voltage or power cable
in parallel or wiring them in a same piping. It may
cause a malfunction of the device.
• Do not mount the device at any one of the following
places to use this product properly and safely. If not
observed, it may cause a re, an electric shock, or a
failure.
• Place at high prospective humidity
• Place at high prospective temperature (where
the device is subject to direct sunshine)
• Dusty place
• Place with insufcient ventilation
• Place where static electricity is likely to be
generated
• Place involving corrosive or ammable gases
• Place where the device is subject to water, oil,
and /or chemical splashes
• Place with direct vibration and impact
• Do not handle electric cables as follows. Otherwise,
cables may be damaged, resulting in a re or an
electric shock.
• Damage • Torture • Pull
• Twist • Bundle, • Put heavy stuff
• Do not touch the device or its cable with wet hand.
Otherwise, it may cause an electric shock.
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• Do not insert any improper cable or metal into
electrical terminals. It may result in short-circuiting
inside the device, causing a re, an electric shock,
and / or a failure.
• Do not drop this device nor give any strong impact
on it. It may result in personal injury, if it falls on your
foot, or a device failure.
• Securely mount this device. This device may
fall off due to insufcient mounting or unstable
mounting position, resulting in personal injury or
an accident.
• Wipe off the dirt on this device with a soft, dry
cloth or a rmly squeezed cloth wet with diluted
neutral detergent.
• Please note that there may be dead pixels or
bright pixels with the LCD screen although it
has been produced with a super-high precision
technology.
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TABLE OF CONTENTS
FOREWARD.......................................................................2
Legend of Safety Symbols ......................................................... 2
PRECAUTIONS FOR SAFE USE ......................................3
TABLE OF CONTENTS ......................................................5
1 BASIC INFORMATION BEFORE USE ............................7
Names and Functions of Components....................................... 7
Precautions When Mounting This Sensor.................................. 8
Wiring of Power Cable ............................................................. 10
Option....................................................................................... 11
2 DISPLAY ON LCD SCREEN .........................................12
Outline of LCD screen .............................................................. 12
Details of LCD Screen.............................................................. 14
Names and Functions of Operating Buttons ............................ 15
3 DISTINCTION BY PATTERNS RECOGNITION............16
Outline of Patterns Recognition................................................ 16
Registration of Work Pattern (Shape) ...................................... 17
Conrming Identity by Switching Display Mode ....................... 19
Operation Check by Shifting Work ........................................... 21
4 USE OF APPLIED FUNCTIONS ...................................22
Position & Magnication Correction ......................................... 22
Masking.................................................................................... 29
Edition of Color Detection Area ................................................ 36
Rotation Correction .................................................................. 39
Brightness Irregularity Correction............................................. 46
5 CHANGING SET VALUE...............................................48
Changing Set Value.................................................................. 48
Initializing Set Value ................................................................. 49
Example of Changing Set Value .............................................. 50
Set Items List............................................................................ 52
Function of Color Selection & Mask Edition Menu ................... 58
6 TROUBLESHOOTING...................................................59
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When in trouble: ....................................................................... 59
7 APPENDIX .....................................................................65
Specications ........................................................................... 65
Outside Dimensions Drawing ................................................... 66
I/O Circuit Diagrams................................................................. 67
Relation between External Input and Bank No. ....................... 68
External Teaching Timing ......................................................... 68
Function of Auxiliary Output ..................................................... 69
Operation Check by Using Sample Work................................. 70
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1 BASIC INFORMATION BEFORE USE
Conrm that the device is not damaged before using it.
Names and Functions of Components
Operating Buttons
Use to register patterns or colors, set
each item, or switch the display mode
of the screen.
See "Names and Functions of
Operating Buttons" on Page 15.
LCD Display
Displays the images and the detection
result taken by the built-in camera.
Also, displays each set item and set value.
See "Display on LCD Screen"
on Page 12
Power / Signal Cable Connector
Connects the power / signal cable.
See "Wiring of Power Cable" on Page 10.
Cable Connector
Connects external cable (Option).
See "Options" on Page 11.
Mounting Hole
Using a screw M4×50 mm or more is
recommended.
See "Outside Dimensions
Drawing" on Page 66.
Built-in camera and
lights are equipped
on the back.
1
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Precautions When Mounting This Sensor
• Mount the sensor leaned by 5°-45° so that
lighting should not be reected by a work.
5°-45°
Work
• Detection may become successful by changing
the setting even if a detected image is
displayed as shown in the right gure.
See "Changing Set Value" on Page 48.
Tilt the sensor by 10°-40° to avoid the mirror reection when a
work is shiny.
• Take caution so that the external lighting (light
from uorescent light, etc.) is not reected.
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1
• The work imaging condition changes depending on the distance
between the sensor and a work and the tilted angle of the sensor.
When detecting a slight difference in shape, smear, or aw of a work,
furnish more stable bracket for this sensor and design the machine so
that attering of works is reduced as much as possible.
• Refer to the standard object distance of each model as to the distance
between this sensor and a work.
See "Specications" on Page 65.
If the object distance is too near, the sensor becomes out of focus,
causing a irregular lighting, while it is too far, the sensor is likely to
receive the inuence of the turbulence light since the light does not
reach the work.
See "Correction of Brightness Irregularity" on Page 46.
• When a work moving very fast is going to be detected, the shutter time
(brightness) has to be shortened. In such a case, make the distance
between the sensor and a work closer or add additional external
lighting since quantity of light becomes insufcient with only the light
built in this sensor.
See "Options" in Page 11.
• The shutters of the image sensor of this device open in sequence from
the right to the left in the screen. Because of this reason, the work
traveling from the right to the left is displayed wider and the one
traveling opposite is displayed narrower.
In order to detect a slight difference in shape, slow down the travel
speed of a work.
• Please note that there may be dead pixels (pixels that cannot receive
light correctly) with this image sensor. Although dead pixels may
not detect or detect incorrectly, they will not be any problem on the
practical use since they are very few.
BASIC INFORMATION BEFORE USE
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Wiring of Power Cable
The following shows the color and signal allocations of the power / signal
cable lines.
No Line Color Content of signal
1 Brown 12-24 V DC
2 Blue 0 V
3 Orange / Black Bank switch 0 input
4 Yellow / Black Bank switch 1 input
5 Pink Bank switch 2 input / External
teach input
6 Purple Bank switch 3 input / Synchronous
input
7Black Judgment output
8Red/Black Aux. output
• The LCD screen and lighting turn ON when the power lines are
connected.
• The reference power capacity is 300 mA/unit.
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1
Option
The following options can be connected to this device.
Model Application
CVS-M1★
Remote Monitor
Monitoring unit furnished with the remote control function
for the color vision sensor series. Connected to see the
detection result at a place remote from the work. Also,
teaching and various settings are possible as done with this
device.
CVS-LW1★
External Lighting
(white)
One-touch connected external lighting unit for the color
vision sensor series; Use this lighting where this sensor is
mounted at a dark place and stable result is not obtained due
to insufcient lighting.
CVS-C3S
Extension Cable (3 m)
Extension cable for the remote monitor. Four cables can be
connected at maximum for extension (15 m in total).
CVS-C2C
PC Connection Cable Used to call out or save data, connected with a PC.
★Patent being applied
・ Three external lightings and one remote monitor can be
connected per one unit of this device.
・ The back light of the LCD display gets dark when the internal
temperature increases. The back light will get bright by pressing
the operating button of this sensor. The back light will get
dark again if any push-button operation is not done within 60
seconds.
BASIC INFORMATION BEFORE USE
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2 DISPLAY ON LCD SCREEN
Outline of LCD Screen
The display mode of the LCD screen is switched according to the item
selected on the main menu.
Standard screen
"Standard screen" is rst displayed when the
device is powered ON.
Keep the device in this mode during the normal
operation.
Main Menu
1 Press or to select an intended item on the
main menu.
The selected item is displayed in yellow.
PARAMETER : Displays the Set Value Reference screen
TEACHING : Displays the Teaching Menu.
SYSTEM : Displays the System Menu.
2 Press .
Then, the intended screen will appear.
By pressing for 3 seconds or more after selecting
TEACHING , SAVE PATTERN will be executed.
See "Distinction by Patterns recognition" on Page 16.
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DISPLAY ON LCD SCREEN
Set Value Reference screen
Displays the present set value for each setting item.
You can select an intended setting item and change
its value in this screen.
See "CHANGING SET VALUE" on Page
48.
Teaching Menu
Performs the patterns recognition, the position
& magnication correction, the registration of a
pattern (shape) for rotation correction, and the
edition of the masking area or the color detection
area.
See "Distinction by Patterns recognition" on
Page 16.
System Menu
Corrects brightness irregularity and captures
image.
2
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Details of LCD Screen
This section describes the details of the contents displayed on the LCD
screen.
①Image screen
 Displays the image taken by the built-in
camera.
②Main menu
 Displays the menu for setting or edition.
③Screen display mode
 Shows the display status when the display
mode is switched with button.
See "Conrming Identity by Switching
Screen Display Mode” on Page 19.
①
②
③
④
⑥
⑦
⑧
⑤
④ Identity bar graph
 Displays identity in a bar graph. The boundary between green and orange is
the threshold value of identity. (The threshold value can be changed by the
CMPLEVEL set value).
⑤Bank number
Displays the present bank number. (0-14)
⑥Auxiliary output status
Displays ON/OFF condition of an auxiliary output signal. Output is ON when ●
is displayed.
⑦Response time (Unit: 0.1 ms)
Displays the time from the beginning of imaging till the output of the judgment
signal by the unit of 0.1 ms.
⑧Identity and output signal condition
Displays the identity (0 -100) by a numeral.
A numeral displayed in orange shows that output is ON, while a numeral in green
shows that output is OFF.
The screen to make setting and edition differs depending on
each function. Refer to the explanations of each function for
details.
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DISPLAY ON LCD SCREEN
2
Names and Functions of Operating Buttons
UP
VIEW
DOWN
SET
EXIT
① ⑤
② ④
③
①UP button
Use to increase a set value, etc. or change a set item.
②DOWN button
Use to decrease a set value, etc or change a set item.
③SET button
Use to change or edit a set value or move to the selected menu.
④EXIT button
Use to change or edit a set value or return to the previous menu.
⑤VIEW button
Use to switch the display mode of the screen.
See " Conrming Identity by Switching Screen Display Mode” on Page 19.
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3 DISTINCTION BY PATTERNS RECOGNITION
If you want to use this device immediately or try the patterns recognition,
try to distinguish works by using the patterns recognition method
described here.
The easiest setting method not performing any correction is explained,
using the sample work at the end of this manual.
Use the applied functions such as correction, etc. if successful
distinction cannot be made by this method.
 See “USE OF APPLIED FUNCTIONS” on Page 22.
Outline of Patterns Recognition
To distinguish a work by the patterns recognition, register the pattern of a
good work (shape) in the beginning. Identity is distinguished by compar-
ing a work with the registered pattern.
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Registration of Work Pattern (Shape)
Register a work pattern (shape) from the teaching menu in the following
procedures.
1 Turn ON the power supply and
detect Sample ①.
See "Operation Check by Using Sample
Work” on Page 70.
2 Press and select TEACHING .
TEACHING is displayed in yellow.
3 Press .
The teaching menu appears.
SAVE PATTERN is directly executed
by pressing for 3 seconds or more.
Proceed to Step 7.
DISTINCTION BY PATTERNS RECOGNITION
3
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4 Press twice to select
SAVE PATTERN .
SAVE PATTERN is displayed in yellow.
5 Press for 3 seconds or more.
SAVE PATTERN is executed and the
pattern registration menu will appear.
6 SAVE PATTERN is displayed in
red.
Registration of the pattern is
complete when SAVE PATTERN
changes into yellow.
The patterns recognition without any correction
starts operating by the above operations
7 Press .
The standard screen is restored.
Proceed to "Conrming Identity by Switching Display Mode" on the
following page.
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3
Conrming Identity by Switching Display Mode
Registered patterns, comparison results, and screens before and after
correction is made can by conrmed by switching the screen display.
Every pressing will switch the display mode in the following order.
THRU LIVE COLR TRNS PTRN COMP
① ② ③ ④ ⑤ ⑥
①
THRU
: Through
②LIVE
: Live
Displays the screen after color
correction.
This is the screen on the shipment from
our factory.
Displays the image screen before color
correction and brightness irregularity
correction.
This is the real image screen
③
COLR
:Color
④
TRNS
: Transfer
Displays only the colors for correcting
position, magnication, and rotation.
Displays other areas in purple.
Displays the image screen after correcting
position, magnication, and rotation. This
is similar to ①
THRU
when there is no
correction.
DISTINCTION BY PATTERNS RECOGNITION
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⑤
PTRN
:Pattern
Displays the registered screen
(used for comparison).
The blue portion is the masked
area and treated as the area
outside the comparison.
⑥
COMP
:Compare
Display the result (identity) of
comparing ①
TRNS
with
⑤
PTRN
.
Green: High identity zone
Yellow: Middle identity zone
Red: Low identity zone
In case of the above screen of ⑥
COMP
, a work is
displayed in green and it shows that identity is very high.
This is because the work is at the position same as that in
registration.
Proceed to "Operation Check by Shifting Work” on the following page.
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