Canon PD-704 User manual

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Non-Contact Displacement Sensor User’s Manual Rev 1.00
Non-Contact Displacement Sensor PD-704
User’s Manual Rev 1.00
Please read this manual carefully before operation.
Please keep it in a safe place for future reference.

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Non-Contact Displacement Sensor User’s Manual Rev 1.00
Introduction
This manual provides the information on the hardware of the Non-Contact Displacement Sensor and the basic
operating procedures. To make full use of the performance and functions of the Non-Contact Displacement Sensor,
please read this manual carefully and understand fully before operation.
Furthermore, please keep this manual in a safe place for future reference.
Conventions
The following conventions are used in this manual.
Obey the instructions under this heading to avoid death or serious injury due to fire or electrical shock.
Obey the instructions under this heading to avoid injury or damage to the equipment.
Safety Precautions
General Points to Note
When starting or operating the equipment, confirm that the performance and functions of the equipment are
working properly.
In case the equipment malfunctions, take safety measures to avoid various damages.
If the equipment is used outside the described specifications or altered, the performance cannot be guaranteed.
Do not use this equipment in a place where inflammable or explosive gas or steam is present.
Never use this equipment with any power source other than one that can supply the correct rated voltage.
Never perform installation, operation, maintenance, or equipment checks with wet hands.
Never attempt to disassemble or modify the equipment.
Never drop the equipment and never subject the equipment to shock or vibration.
If abnormal symptoms occur, immediately turn off the equipment. (Remove the power cable.)
When connecting or removing the cable, turn off the equipment and the devices connected to the equipment.
If the equipment is located near noise sources, use a noise filter, wire the cables, insulate it, etc.
To use the equipment properly and safely, do not locate the equipment in:
Humid places, dusty places, poorly-ventilated places, and places with high temperature such as those
exposed to direct sunlight
Places with corrosive gas or flammable gas, places subject to direct vibration or shock
Places subject to splashes of water, oil, chemical liquids, etc., places subject to static electricity
WARNING
WARNING
CAUTION
CAUTION

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Non-Contact Displacement Sensor User’s Manual Rev 1.00
Cautions on Length Measurement
After powering on, wait for 30 minutes before use. Failure to observe this caution may cause drift for length
measurement values.
Dusts, water, oil, etc. on the window part of the equipment may cause a length measurement error.
Wipe off deposits with clean air. If dirt is heavy, wipe it off with a soft, alcohol-soaked cloth.
Floating objects, droplets, etc. between the equipment and target measurement object may cause a length
measurement error.
Apply a protective cover, air purge, etc.
A length measurement error may occur depending on the state or form of the surface of the target
measurement object.
Calibration using the actual target measurement object can allow more accurate measurement.
A length measurement error may occur depending on the located state of the equipment.
Confirm that the measurement distance is correct and the equipment is located horizontally to the carrying
direction of the target measurement object.
Calibration after installation can allow more accurate measurement.
A length measurement error may occur if the target measurement object vibrates.
Length may not be measured if the target measurement object moves in a direction vertical to the length
measurement direction.
Product Safety
USA
CAUTION
FCC
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
( 1 ) This device may not cause harmful interference, and
( 2 ) this device must accept any interference received, including interference that may cause undesired operation.
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the
FCC Rules.
These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in
a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of
this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct
the interference at his own expense.
Do not make any changes or modifications to the equipment unless otherwise specified in the manual. If such changes or
modifications should be made, you could be required to stop operation of the equipment.

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Non-Contact Displacement Sensor User’s Manual Rev 1.00
Japan
EU
Korea
ＶＣＣＩ
この装置は、クラスＡ情報技術装置です。 この装置を家庭環境で使用すると電波妨害を引き起こすことがあります。
この場合には使用者が適切な対策を講ずるよう要求されることがあります。
ＶＣＣＩ-Ａ
EMC
This is a class A product. In a domestic environment this product may cause radio interference in which case
the user may be required to take adequate measures.
A 급 기기
(업무용 정보통신기기)
이 기기는 업무용으로 전자파적합등록을 한 기기이오니 판매자 또는 사용자는 이 점을
주의하시기 바라며, 만약 잘못판매 또는 구입하였을 때에는 가정용으로 교환하시기
가가가가.

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Non-Contact Displacement Sensor User’s Manual Rev 1.00
— Contents —
1. Before Use ..................................................................................................6
1-1. System Configuration ........................................................................................................... 6
1-2. Accessories ....................................................................................................................... 7
1-3. Names and Functions of Parts ................................................................................................ 7
1-4. Installation/Connection.......................................................................................................... 9
1-4-1. Fixing the main unit ........................................................................................................ 9
1-4-2. Checking the target measurement object ............................................................................. 9
1-4-3. Connecting..................................................................................................................11
2. Measuring the Length and Setting the Functions........................................12
2-1. Obtaining the Length Measurement Values ...............................................................................12
2-1-1. Using the application to obtain the length measurement values.................................................12
2-1-2. Obtaining the length measurement values by pulse output.......................................................12
2-2. Setting the Length Measurement Parameters ............................................................................13
2-2-1. Setting the pulse resolution .............................................................................................13
2-2-2. Setting the trigger .........................................................................................................13
2-2-3. Setting the user correction coefficient .................................................................................13
2-3. Calibration ........................................................................................................................14
3. I/O Terminals............................................................................................15
3-1. Function of I/O Terminals......................................................................................................15
3-1-1. Power cable terminals....................................................................................................15
3-1-2. Connecting the I/O cable ................................................................................................15
4. Specifications............................................................................................16
4-1. Main Specifications .............................................................................................................16
4-2. External Dimensions ...........................................................................................................17
4-3. Options............................................................................................................................18
4-3-1. I/O cable kit .................................................................................................................18
4-3-2. USB cable kit...............................................................................................................18
4-3-3. Protective cover unit ......................................................................................................18
4-3-4. Measurement distance adjustment tool...............................................................................19
4-4. Characteristics...................................................................................................................20
4-4-1. Spot size and light receiving area......................................................................................20
4-4-2. Handling the length measurement value depending on the position of the mounted main unit ...........20
5. Guarantee and Service...............................................................................21
6. Appendix...................................................................................................22
6-1. Troubleshooting .................................................................................................................22
6-2. Error ...............................................................................................................................23
6-3. Warning ...........................................................................................................................23
6-4. I/O Circuit .........................................................................................................................24
6-5. Target Measurement Object ..................................................................................................25

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Non-Contact Displacement Sensor User’s Manual Rev 1.00
1. Before Use
This chapter explains the configuration of the Non-Contact Displacement Sensor, precautions, and preparation
required before use.
Please read this chapter before operation.
1-1. System Configuration
The equipment can be used with commercially available devices for various purposes.
Main unit
Power cable
Standard Configuration
Non-Contact Displacement
Sensor software
USB cable
I/O cable
Can be connected to a computer to
import measurement values and set
parameters using the measurement
software.
Can be connected to a programmable
controller to control the measurement
timing and import measurement values.
Photoelectronic sensor,
proximity sensor, etc.
Can be used to enter the timing
to start measuring the target
measurement object.
Indicator light, etc.
Can be used to detect
measurement results and error
signals and give an alarm, etc.

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1-2. Accessories
The following shows the standard configuration. Before use, please confirm that all the following items are included.
For optional items, see section 4-3.
1-3. Names and Functions of Parts
Main unit
①I/O connector
When using control devices such as a programmable controller, connect the optional I/O cable (AM4-0085).
If you do not use the I/O cable and the location requires waterproofing, attach the I/O cap (that comes with the
optional USB cable kit).
②USB connector
When using the Non-Contact Displacement Sensor software on a computer, connect the USB cable.
[USB cable specifications]
USB2.0 Full Speed (Compatible with USB1.0)/Connector shape: mini USB mini-B
If the location requires waterproofing, use the optional USB cable (AM4-0087).
If you do not use the USB cable and the location requires waterproofing, attach the USB cap (that comes with
the optional I/O cable kit).
Main unit
Main unit
Power cable
DVD
Non-Contact Displacement
Sensor software
User’s manual

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Non-Contact Displacement Sensor User’s Manual Rev 1.00
③Power connector
Connect the power cable (AM4-0085). 12 to 24V DC power input is supported.
④Status indicator
Turns on or blinks while the main unit is operating.
Condition
Power
Status
Powered on
On
Off
A warning occurs
On
Blinking
An error occurs
On
On
⑤Mounting screw holes
Mount the main unit with four M4 screws. The board thickness of the screw hole parts is 6 mm. Select the screw
length depending on the location where the main unit is fixed. To prevent screws from loosening by vibration, it is
recommended that you take screw locking action.
(For how to fix the main unit, see section 1-4-1.)
⑥Optical window
Irradiates LED light to measure the length, and receives light diffuse-reflected by the target measurement object.
Protected by the cover glass.
⑦Length measurement direction
The direction of the arrow shown in the figure indicates the length measurement direction (work moving direction).

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1-4. Installation/Connection
1-4-1. Fixing the main unit
Mount the main unit with M4 screws. The board thickness of the M4 fixing parts is 6 mm. For the screw fixing parts,
see the following dimensions.
Secure a sufficient engagement allowance (5 or more pitches recommended) to fix screws and bolts/nuts.
Positioning pins that match the sides of the main unit make it easier to mount the main unit.
1-4-2. Checking the target measurement object
The following figure shows the length measurement direction of the equipment. Length cannot be measured in a
direction vertical to the length measurement direction.
The measurement distance of the equipment is based on the sides of the unit.
Install the main unit so that the measurement distance is 70 mm to the side of the unit.
If vibration is expected to occur on the target measurement object, tolerate the measurement distance within ±15 mm.
* The measurement distance adjustment tool makes it easier to adjust the measurement distance or install a thin
measurement object.
See the section for the optional measurement distance adjustment tool.
Hole position tolerance: ±0.15 mm
Side of the main unit
Main unit
Mounting screw
(on the light side)
Length
measurement
direction
Measurement distance
Tolerance range
Target measurement object

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Non-Contact Displacement Sensor User’s Manual Rev 1.00
When an obstacle is placed between the equipment and the target measurement object, you may not measure.
Do not locate an obstacle at the hatched part.

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Non-Contact Displacement Sensor User’s Manual Rev 1.00
1-4-3. Connecting
- Connecting to a computer
Connect the USB cable and power cable. When the DC power is turned on, the main unit is turned on.
For details, see chapter “3. I/O Terminals.”
- Connecting to an external device (such as a programmable controller)
Connect the optional I/O cable and power cable. When the DC power is turned on, the main unit is turned on.
For details, see chapter “3. I/O Terminals.”
- Connect or disconnect the USB cable and I/O cable with the power turned off.
- Check the direction of the connector when it is connected.
Incorrect connection may damage connector pins or the waterproof function, resulting in a malfunction.
When the power is turned on, the power indicator of the main unit turns on in green.
CAUTION
Main unit
Main unit
USB cable
Power
cable
Power
cable
I/O cable
On

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2. Measuring the Length and Setting the Functions
2-1. Obtaining the Length Measurement Values
Before starting to measure the length, turn on the power and confirm that power indicator of the main unit is lit on.
2-1-1. Using the application to obtain the length measurement values
Connect the main unit to a computer, and use the Non-Contact Displacement Sensor software to measure the length.
For details, see the User’s Manual of “Non-Contact Displacement Sensor Software.”
The positive and negative of the length measurement data follow the definition shown in the following figure.
- Real-time monitoring
You can monitor the displacement of the target measurement object in real time.
Select the displacement or speed in the length measurement setting and then press the length measurement start
button to display the graph of the displacement information.
Information such as the measured length between the length measurement start and end is also displayed.
- Obtaining data
Time series data displayed in graph can be saved in CSV file format.
- Error, warning
A detected error or warning is displayed on the Non-Contact Displacement Sensor software.
See sections “5-2. Error” and “5-3. Warning.”
2-1-2. Obtaining the length measurement values by pulse output
If an external device connected to the main unit via the optional I/O cable gives a trigger to start measuring the length,
the length starts to be measured.
After the measurement starts, the I/O connector of the main unit outputs AB phase pulse signals depending on the
displacement of the target measurement object.
The output AB phase pulse signals are line-driver outputs. (See 5-4. I/O Circuit)
If an error or warning occurs, the error/warning signal is output.
Main unit
Target measurement object
+ direction
– direction
Displaying
measurement length
values
Displaying graphs
Saving data
Measurement setting
Start of measurement
Definition of positive and negative
of length measurement direction
User interface of Non-Contact Displacement Sensor software

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2-2. Setting the Length Measurement Parameters
Use the “Non-Contact Displacement Sensor Software” to set the length measurement parameters.
For details, see the User’s Manual of Non-Contact Displacement Sensor Software.
2-2-1. Setting the pulse resolution
The main unit outputs AB phase pulse signals as the length measurement information.
The resolution of AB phase pulse can be set.
The allowable range is from 1 to 1,000 um.
The default is set to 10 um, outputting 1 pulse every 10 um.
2-2-2. Setting the trigger
If the main unit is given a trigger to start measuring the length, the length starts to be measured.
After the measurement starts, the light beam for length measurement turns on.
The pattern of the length measurement start trigger can be set.
2-2-3. Setting the user correction coefficient
The length measurement value of the main unit can be corrected.
Setting the correction coefficient allows you to measure the length always with the length measurement value of the
main unit multiplied by the correction coefficient.
The allowable range of the correction coefficient is from 0.9000 to 1.1000.
Trigger
: Pulse shape
Pulse output
Trigger
: Step shape
Pulse output
Pulse Resolution
Phase A
Phase A
Phase B
Phase B

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2-3. Calibration
An absolute length measurement value error may occur depending on the installation state of the main unit or the
characteristics of the target measurement object.
Calibration allows you to obtain a length measurement value close to your estimate.
What are required for calibration
- A sample equivalent to the actual length measurement object
- A measure to move by already known length
Calibration method
- Move the above sample by already known length, and measure the length using the Non-Contact Displacement
Sensor.
It is recommended that you measure the length several times in the same conditions.
Correct the difference between the already known value and the average of several length measurement values.
(See 2-2-3. Setting the user correction coefficient)
Calibration example:
Punch a mark on the target measurement object to perform calibration.
1) Punch a guide mark on the target measurement object using the length measuring instrument.
2) Start measurement using the Non-Contact Displacement Sensor, and displace the target measurement object.
3) End measurement using the Non-Contact Displacement Sensor, and punch a mark on the target measurement
object again.
Calibrate the length measurement value obtained using the Non-Contact Displacement Sensor based on the gap
of marks.
Use a length measurement microscope, etc. to measure the gap of marks accurately.
Set the main unit to a value calculated in the following equation:
(Gap of marks) / (Length measurement value obtained using the Non-Contact Displacement Sensor) = User
correction coefficient
For how to set the user correction coefficient, see section “2-2-3. Setting the user correction coefficient.”
Main unit
Step 1
Step 3
Step 2
Marking punch
Mark
Target measurement object
Move the target measurement object
Gap of marks =
Displacement

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Non-Contact Displacement Sensor User’s Manual Rev 1.00
3. I/O Terminals
3-1. Function of I/O Terminals
This section explains the function of I/O terminals.
3-1-1. Power cable terminals
Connect the power cable terminals to the 12 to 24V DC power supplies (Power capacity: 20W or more).
The terminals are ring-shaped for M4.
The following figure shows an example to connect the terminals to 12V DC switching power supplies.
3-1-2. Connecting the I/O cable
The end of an I/O cable is a ring terminal (for M3, only FG terminal: for M4).
The length of an I/O cable is 5 m. To extend the cable, use a terminal block, etc.
A label is attached to each I/O cable.
The following table shows the relationship between the label display and the function.
Cable Pin Assignment
Label Display
Signal
Label Display
Signal
PULSE_A+
Phase A pulse
WARNING
Warning signal output
PULSE_A-
Phase A– pulse
WARNING_G
Warning signal output GND
(return)
PULSE_B+
Phase B pulse
RESET
Reset signal input
PULSE_B-
Phase B– pulse
RESET_G
Reset signal input GND (return)
GND
GND
TRIGGER2
Reserve
ERROR
Error signal output
TRIGGER2_G
Reserve signal input GND
(return)
ERROR_G
Error signal output GND (return)
TRIGGER1
Trigger signal input
* GND terminals are the same as ones for Phase A/Phase B pulse
output
(RS422 line driver GND).
Connect the Phase A/Phase B pulse receiving circuit as required.
TRIGGER1_G
Trigger signal input GND
(return)
FG
FG
* Each return line is floating.
The content of an error or warning can be checked on the bundled application software.
Power cable
DC
12-24V
(Blue)
GND
(White)
FG
(Green)
12V DC switching power supplies

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4. Specifications
4-1. Main Specifications
70mm
±15mm
-4,000mm/s to 4,000mm/s
（Including the stop state）
100G
1μm
WD:70ｍｍ±5mm ±0.2％ or 100μm
WD:70ｍｍ±15mm ±0.5％ or 100μm
0.02% or 20μm
LED
4kHz
1μm to 1,000μm (Set on application software)
Phase A/B (RS422-compliant line driver)
Trigger input Photocoupler insulation:5 to 24V
Error output
Open collector output
(Photocoupler insulation):5 to 24V
USB 2.0 Full Speed
(Compatible with USB 1.1) compliant
0℃ to 50℃
-30℃ to 60℃
80％RH or lower
Bare vibration：Evaluated in vibrating
environment
Frequency:10 to 500Hz 5G sin wave 2 hours for
XYZ directions
IP65
DC12V to 24V
8W
1.2kg
156x127x67
Aluminum, Window(Stainproof coating)
Power cable 5m
I/O cable 5m
USB cable 5m
※1 When measured in our environment.
※2 When measured in our conditions.
※3 When used the optional kit.
※4 A glossy surface similer to a mirror may not be measured.
Measurement distance
(WD:Working Distance)
Operating temperature
Measurement range
Measutement speed range
Maximum acceleration
of target measurement object
Measurement resolution
Measurement
accuracy ※1
Measurement repeatability ※2
Light source
Sampling rate
Pulse output
Other
input/output
USB interface
Weight
Dimensions
Materials
Cable length
Storage temperature
Humidity
Vibration
Protection class ※3
Power voltage
Power consumption

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4-2. External Dimensions
Center of light reception

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Non-Contact Displacement Sensor User’s Manual Rev 1.00
4-3. Options
4-3-1. I/O cable kit
I/O cable Waterproof USB connector cap
4-3-2. USB cable kit
USB cable Waterproof I/O connector cap
4-3-3. Protective cover unit
This unit protects the optical window of the main unit from dirt or shock.
If the optical window is expected to get dirty, e.g., in a location where oil splashes, it is recommended that you attach
the protective cover unit.
Insert the protective cover unit to the main unit, and then secure it with the bundled M4 (L = 6) screws. To prevent
screws from loosening by vibration, it is recommended that you take measures such as screw locking.

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4-3-4. Measurement distance adjustment tool
This tool allows you to visually find the best measurement distance.
- How to use the measurement distance adjustment tool
Insert the measurement distance adjustment tool to the main unit, and then secure it with the bundled M4 (L = 6)
screws.
Enter the trigger on the I/O or Non-Contact Displacement Sensor software.
One or two lines of light beam are irradiated on the target measurement object.
Two lines of light beam overlap on the best measurement distance and appear as one line.
Adjust the mounting height of the main unit or the height of the target measurement object so that two lines of light
beam will overlap.
The linear light matches the length measurement position, and can be used to align a thin measurement object.
When mounting is finished, turn off the length measurement trigger, and remove the measurement distance
adjustment tool.
Do not look into the light beam as it is very bright.
Also pay attention to light beam reflected on a metal, etc.
CAUTION
Main unit
Measurement distance
adjustment tool
Best measurement
distance
Light beam

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4-4. Characteristics
4-4-1. Spot size and light receiving area
The spot size of light beam is about Φ30 mm.
The light receiving area is 4.8 X 0.2 mm2 with a central focus on the optical axis of a light receiving optical system.
4-4-2. Handling the length measurement value depending on the position of the mounted main unit
If the position of the mounted main unit is tilted to the carrying direction of the target measurement object, a cosine
error occurs.
The following graph shows the relationship between the angle and the error.
An error generated by ±2° is about 0.06％. Mounting the main unit with ±2° as an approximate guide reduces the
impact of the cosine error.
Furthermore, it is recommended that you measure the already known length beforehand and correct the absolute
value. (See 2-3. Calibration）
Light beam
Main unit
Light receiving area
Light receiving optical axis
Length measurement distance = 70 mm
Target measurement object
Error (%)
Mounting angle (°)