Omron E3M-V - User manual

E3M-V
A-133E3M-V
Mark Sensor
E3M-V
• Detects laminated or light-dispersing
objects in stable operation without be-
ing influenced by mirror reflection.
• Double indication of the detection level
and threshold level allows easy grasp
of the operating status and easy ad-
justment.
• Automatically sets to the optimum
threshold level while sensing objects
are being conveyed and incorporates
an auto-teaching function that discrim-
inates between the mark and back-
ground and turns ON when the mark is
detected.
• IP67 watertight construction with M12
rotary connector
• High response speed of 50 s and half
the size of OMRON's conventional
models.
Applications
Dependably Detects Marks on Laminated Sheets
The coaxial optical system ensures a long sensing distance and
stable sensing characteristics over a wide angle range, even for
objects that are distance-fluctuating or leaning at an angle, or for
laminated objects with marks, which conventional models have
difficulty in detecting
Auto-Teaching
An auto-teaching function automatically sets the threshold value
upon a Remote Control input while the workpiece is moving.
There is no need to position the mark at the optical spot.
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A-134 Standard Photoelectric Sensors
Ordering Information
Sensors
Mounting Brackets
Sensor I/O Connectors
Shape Connection method Setting distance Spot diameter Model
NPN output PNP output
Connector type1
1. Possible to switch between vertical or horizontal connection using the M12 rotary connector
1 x 4 mm E3M-VG11 E3M-VG16
4 x 1 mm E3M-VG21 E3M-VG26
Pre-wired
1 x 4 mm E3M-VG12 E3M-VG17
4 x 1 mm E3M-VG22 E3M-VG27
Shape Model Quantity Remarks
E39-L131 1
E39-L132 1 For rear mounting
Shape Type Cord type Model
Single-end connector
(Straight)
2 m
4-wire cord
XS2F-D421-D80-A
5 m XS2F-D421-G80-A
Single-end connector
(L-shaped)
2 m XS2F-D422-D80-A
5 m XS2F-D422-G80-A
10+3 mm
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A-135E3M-V
E3M-V
Specifications
Ratings/Characteristics
Item E3M-VG11 E3M-VG12 E3M-VG21 E3M-VG22 E3M-VG16 E3M-VG17 E3M-VG26 E3M-VG27
Sensing distance 10±3 mm
Spot size (W x H) 1 x 4 mm 4 x 1 mm 1 x 4 mm 4 x 1 mm
Light source (wave-
length) Green LED (525 nm)
Power supply voltage 10 to 30 VDC, ripple (p-p) 10% max.
Current consumption 100 mA max.
Control output
Load power supply voltage: 30 VDC max.
Load current: 100 mA max.
(Residual voltage: 1.2 V max.)
NPN open collector output type
Load power supply voltage: 30 VDC max.
Load current: 100 ma max.
(Residual voltage: 2 V max.)
PNP open collector output type
Remote control input1
1. Remote controll input and answer-back output share the same signal line.
ON: Short-circuited to 0 or 1.5 V max.
(with a flow current of 1 mA max.)
OFF: Open or VCC - 1.5 V to VCC
(with a leakage current of 0.1 mA max.)
ON: VCC - 1.5 V to VCC
(with an absorption current of 3 mA max.)
OFF: Open or 1.5 V max.
(with a leakage of 0.1 mA max.)
Remote control
output1
Load power supply voltage: 30 VDC max.
Load current: 100 mA max.
(Residual voltage: 1.2 V max.)
NPN open collector output type
Load power supply voltage: 30 VDC max.
Load current: 100 ma max.
(Residual voltage: 2 V max.)
PNP open collector output type
Bank selection Two banks selectable. Available for remote control only. (Refer to Remote Control Function.)
Circuit protection Protection from reversed power supply connection and load short-circuit
Response time ON: 50 µs max.
OFF: 70 µs max.
Ambient illumination
(on receiver lens)
Incandescent lamp: 3,000 lx max.
Sunlight: 10,000 lx max.
Ambient temperature Operating: -20°C to 55°C/Storage: -30°C to 70°C
(with no icing)
Ambient humidity Operating: 35% to 85%/Storage: 35% to 95°C
(with no condensation)
Insulation resistance 20 M min. (at 500 VDC)
Dielectric strength 1,000 VAC, 50/60Hz, 1 min.
Vibration resistance2
2. The Sensor withstands 0.75 mm double amplitude or 100 m/s² if the mounting bracket is attached to the sensor
Destruction: 10 to 55 Hz, 1-mm double amplitude or 150 m/s2 for 2 hrs each in X, Y, and Z directions
Shock resistance3
3. The Sensor withstands 300 m/s² if the mounting bracket is attached to the sensor.
Destruction: 500 m/s2 3 times each in X, Y, and Z directions
Degree of protection IEC60529 IP67 (with protective cover)
Connection method Connector Pre-wired Connector Pre-wired Connector Pre-wired Connector Pre-wired
Weight with package
box Approx. 100 g
Material Case: Polybutylene terephthalate
Lens: Acrylic (PMMA)
Others Instruction manual
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A-136 Standard Photoelectric Sensors
Engineering Data
Technical Guide
Glossy Sensing Objects
Incline the Sensor to detect glossy objects so that the Sensor will not
be influenced by the mirror reflection of light and to ensure the stable
sensing operation of the E3M-V.
Standard Sensing Object (Color vs. Munsell)
Japan Color Enterprises Standard Color Card 230
Sensing Distance vs. Incident
Characteristics (Typical)
E3M-VG1@
Angle vs. Incident
Characteristics (X Direction)
E3M-VG1@/VG2@
Angle vs. Incident
Characteristics (Y Direction)
E3M-VG1@/VG2@
Distance (mm) Angle (˚) Angle (˚)
Incidence (%)
Incidence (%)
Incidence (%)
Color Sensing Capacity
E3M-VG@@
White Yellow
green
Red Yellow
red Yellow Green Blue
green Blue Purple Red purple Black
White
Red
Yellow
red
Yellow
Green
yellow
Green
Black
Red
purple
Purple
Blue
Blue
green
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@ : Detectable ∆: Detectable but unstable X: Not detectable
X
∆
XX
∆
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∆
X
X
Differences in Incident by Color
Incidence (%)
White
Red
Yellow red
Yellow
Yellow green
Green
Blue green
Blue
Purple
Red purple
Black
Color
Sensing object
5 to 155 5 to 155
Sensing object
11 standard colors Munsell color notation
White N9.5
Red 4R, 4.5/12.0
Yellow red 4YR, 6.0/11.5
Yellow 5Y, 8.5/11.0
Yellow green 3GY, 6.5/10.0
Green 3G, 6.5/9.0
Blue green 5BG, 4.5/10.0
Blue 3PB, 5.0/10.0
Purple 7P, 5.0/10.0
Red purple 6RP, 4.5/12.5
Black N2.0
F502-EN2-04.book Seite 136 Dienstag, 26. Juli 2005 5:48 17

A-137E3M-V
E3M-V
Nomenclature
Operation
Output Circuits
Operation Indicator (Orange)
Lit when the output is ON.
Detection Level Indicators (Green)
Displays the detection level.
SET Button
Used for teaching and threshold
adjustments.
Threshold Indicators (Red)
Displays the threshold level.
Mode Selector
Selects the mode.
UP/DOWN Selector
Increases the threshold value when
set to UP.
Decreases the threshold value when
set to DOWN.
Detection
level indi-
cators
(green,
8 levels)
Threshold
inidcators
(red,
13 levels)
Threshold
inidcators
(red,
13 levels)
Main
circuit
Main
circuit
Operation
indicator
(orange)
Operation
indicator
(orange)
Remote control input
/Answer-back output
Remote control input
/Answer-back output
Load Load
Brown
White
Black
Blue
Load Load
10 to 30 VDC
Control
output
Brown
White
Black
Blue
(See note.)
(See note.)
NPN (E3M-VG11, E3M-VG12, E3M-VG21, E3M-VG22)
PNP (E3M-VG16, E3M-VG17, E3M-VG26, E3M-VG27)
10 to 30 VDC
Connector Pin Arrangement
1
2
4
3
1
4
2
3
100 mA max.
Detection
level indi-
cators
(green,
8 levels)
Control
output
F502-EN2-04.book Seite 137 Dienstag, 26. Juli 2005 5:48 17

A-138 Standard Photoelectric Sensors
Adjustments
Adjustment Steps
1. Install, wire, and turn ON the Photomicrosensor.
2. Perform teaching (mark registration). Refer to Mark Registration
(Teaching).
3. Make fine adjustments of the threshold level if necessary. Refer to
Threshold Level Adjustments on page A-139 .
4. Check that the mode selector is set to RUN.
Mark Registration (Teaching)
Refer to the following for ideal teaching.
Refer to the following for each teaching method. Remote one- or two-
point teaching is possible. Refer to Remote Control Function.
One-point Teaching
Note: By teaching on the base, reversed output as shown above (base: ON,
mark: OFF) can be obtained.
Two-point Teaching
Note: Follow the above steps so that the output will be turned ON whenever the
mark is detected. By taking the opposite steps, the output will be turned
OFF whenever the mark is detected and turned ON whenever the base
is detected.
Application
The base has a color
pattern. The mark
and base are clearly
different in color.
The base has no col-
or pattern. The mark
and base are slightly
different in color.
The base has no col-
or pattern. Remote
teaching with no po-
sitioning is desired.
‚‚‚
One-point teaching Two-point teaching Auto-teaching
The default level is
set and the output is
ON when the mark is
detected.
The threshold level is
set between the color
of the mark and
base. The output is
ON when the mark is
detected.
The threshold level is
set between color of
the mark and base.
The output is ON
when the mark (i.e.,
the color with shorter
passing time) is de-
tected.
1Set the mode selector to TEACH.
2Locate the mark to the sensing position and press the SET but-
ton. Then all the red threshold indicators are ON.
3Set the mode selector to RUN. The output will be ON whenever
the set mark is detected.
Mark
Sensor
Base Push
Red threshold indicators are ON.
1Set the mode selector to TEACH.
2Locate the mark to the sensing position and press the SET but-
ton. All the red threshold indicators will turn ON.
3If teaching is successfull, move the mark and press the SET
button at the base.
• If teaching is successfull, all the green detection level indica-
tors are ON.
• If teaching is unsuccessfull, all the red threshold level indica-
tor flash.
4If teaching is successful, set the mode selector to RUN to com-
plete the teaching operation. If teaching is unsuccessful, restart
from the above step 2.
Mark
Sensor
Base Push
Red threshold indicators are ON.
Mark
Sensor
Push
Teaching
is OK
Green detection level
indicators are ON.
Teaching is NG
All the red threshold level
indicators will flash if there
is no difference in incident.
Base
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A-139E3M-V
E3M-V
Auto-teaching
1. Check that the mode selector is set to either RUN or ADJUST.
2. Input a 0.9-s pulse signal into the remote control I/O terminal.1
3. Auto-teaching starts when the mark is moved. When the mark passes six times, auto-teaching completes.
• If teaching is successful, answer-back output from the remote control I/O terminal will turn ON for 0.3 s.
• If teaching is unsuccessful, no answer-back signal will be output. Readjust using two-point teaching.
(Teaching will be unsuccessful if there is no difference in incident between the mark and base.)
4. If the answer-back signal is ON, the whole teaching operation will be completed. The output will be turned ON whenever the mark (i.e., the color
with shorter passing time) is detected.
Note: Be sure to connect the E3M-V to the Programmable Controller as shown
above.
Precautions when Using Automatic Teaching
Incorrect discrimination may be caused by automatic teaching in the
following cases. Use one-point or two-point teaching in such cases.
• Color patterns exist in the base.
• Sensing objects change their positions.
• Sensing objects have protrusions or surface level differences.
Threshold Level Adjustments
It is possible to make fine adjustments of the threshold level after
teaching. Such fine adjustments can be made remotely as well. Refer
to Remote control Function (Bank Selection, Mark Registration, and
Threshold Adjustments) on page A-140 .
1. Make sure that the input tolerance of each pulse is within ±0.1 s.
Auto-teaching
Remote control input/
Answer-back output
Incident
Auto-teaching
Teaching starts Teaching completes and detection starts
Answer-back
Time
Mark (shorter passing time):
Output ON
Optimal threshold level set
Base: Output OFF
Dummy sampling (1st mark) Sampling (5th mark) Time
Example of Connection to Programmable Controller
Sensor
Remote control I/O
I/O Unit
Programmable Controller
Output
Input
1Set the mode selector to ADJUST
2
Select the upper or lower threshold selector. Whenever the SET
button is pressed, the threshold level will move. Two indicators
will be lit together when the threshold level is an even level.
3After setting the level, set the mode selector to RUN.
The threshold level increases.
The threshold level decreases.
Lower
threshold
limit
Press
Upper
threshold
limit
Threshold
indicators
Threshold
level
F502-EN2-04.book Seite 139 Dienstag, 26. Juli 2005 5:48 17

A-140 Standard Photoelectric Sensors
Detection Level Indicator
Detection Level Indicator
The control output of the E3M-V will be turned ON if the detection lev-
el exceeds the threshold level. The indication of the detection level
varies with the teaching method.
One-point Teaching
The upper and lower threshold values are set on the basis of the mark
and the detection level indicators indicate the degree of color confor-
mity to the mark's color.
Two-point or Auto-teaching
A single threshold value is set between the mark (registered first) and
the base (registered next). The detection level indicators indicate the
tolerance between the mark and base.
Remote control Function (Bank Selection, Mark Registration,
and Threshold Adjustments)
Under Run Mode or Adjust Mode
The input of any of the signals listed in the following table into the re-
mote control I/O terminal allows remote control of the E3M-V. When
the signal is accepted, answer-back output will be turned ON for 0.3
s. Only in the case of one-point teaching, however, can the signal be
manually input, provided that the input is ON for 1.5 s or more.
Timing Chart
Note: If Signals are sent continuously, make sure that there is an interval of
2.5 s between signal inputs as shown above.
Control Signals
Note: The input error of each signal pulse must be within ± 0.1 s
Ladder Program Example
Control signals are input by a ladder program as shown below.
Detection level
Output OFF
Output ON
Threshold
value
Mark
Output OFF
Detection level
indicators Operation
indicator
Threshold value
Threshold
value
Detection level
Output OFF
Output ON
Threshold
value
Mark
Detection level
indicators Operation
indicator
Threshold value
Base
Input signal
Answer-back output: ON
only when the process
completes normally.
Detection restartsSetting
change
Input discrimination
(1.8 s)
2.5 s min.
Next
input
signal
2.0 s 0.3 s
Remote
control I/O
Sensor
operation
No. Control signal Function
1Bank 1 is selected (operation
indicator OFF in TEACH
mode)
2Bank 2 is selected (operation
indicator ON in TEACH
mode)
3Auto-teaching
4Two-point teaching (1st and
2nd)
5One-point teaching (or input
for 1.5 s min.)
6Threshold level 1 is selected.
7Threshold level 3 is selected.
8Threshold level 5 is selected.
9Threshold level 7 is selected.
10 Threshold level 9 is selected.
11 Threshold level 11 is
selected.
12 Threshold level 13 is
selected.
Input: 00000
Output: 00100
Others: IR bits
TIM000, TIM001, and TIM002
set values
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A-141E3M-V
E3M-V
Dimensions
Note: All units are in millimeters unless otherwise indicated.
Mark Sensors
Eight detection level indicators
Seven level threshold indicators
Operation indicator
M2.6 nut
M12 Connector
M2.6
10-dia. lens
Two, 4.5-dia.
mounting holes
Mounting Holes
Two, M4
Optical axis
47.8
45
Two, 4.5 dia.
mounting holes
67.8
25
29
43
Vinyl-insulated round cable with three
conductors, 6 dia. (17 x 0.16 dia.);
standard length: 2 m
Connector Models
Pre-Wired Models
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A-142 Standard Photoelectric Sensors
Accessories (Order Separately)
Mounting Brackets
E39-L131
E39-L132
Two,
4.2 dia.
4.2 dia.
Material: Stainless steel (SUS304)
Material: Stainless steel (SUS304)
905+15
905+15
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A-143E3M-V
E3M-V
Sensor I/O Connectors
Installation
Sensor I/O Connector
Classification Wire color Connector
pin No. Use
DC
Brown 1 Power supply
(+V)
--- 2 ---
Blue 3 Power supply
(0V)
Black 4 Output
Single-end Connector (Straight Model)
Single-end Connector (L-shaped Model)
XS2F-D422-D80-A (L=2 m)
XS2F-D422-G80-A (L=5 m)
5 dia.
14.9 dia.
6 dia.
5 dia.
6 dia.
XS2F-D421-D80-A (L=2 m)
XS2F-D421-G80-A (L=5 m)
Pin No. Wire colors
DC/AC
Brown
White
Blue
Black
Note: 1 .pin No. 2 is not used.
2 .For details, refer to the Sensor I/O Connectors Catalog
(X065)
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A-144 Standard Photoelectric Sensors
Precautions
Observe the following precautions to ensure safety.
• Do not use the Sensor in locations subject to flammable or explo-
sive gases.
• Do not use the Sensor in water or conductive solution.
• Do not disassemble, repair, or modify the Sensor.
• Use the Sensor under proper power supply specifications such as
the use of AC or DC power supply.
• Do not apply any voltage or current exceeding the rated level.
• Be careful with the power supply polarities and wire correctly.
• Connect the loads correctly.
• Do not short-circuit both ends of loads.
Correct Use
Installation
Power Reset Time
Since the E3M-V is ready to detect objects from 100 ms max. after
the E3M-V is turned ON, operate the remaining devices 100 ms after
the Sensor is turned ON. If power is supplied to the E3M-V and the
load independently, be sure to turn on the E3M-V first.
Power OFF
The E3M-V may output a single pulse when the control power supply
is turned OFF. If the E3M-V is connected to a timer or counter to
which power is supplied from an independent power supply, the E3M-
V will be more likely to output a single pulse when the control power
supply is turned OFF. Therefore, supply power to the timer or counter
from the same power supply for the E3M-V.
Power Supply Type
No full-wave or half-wave rectified power supplies can be connected
to the E3M-V.
Power Supply Connection
Be sure to ground the FG (frame ground) and G (ground) terminals if
a switching regulator is connected to the E3M-V, otherwise the E3M-
V may malfunction due to the switching noise of the switching regula-
tor.
Wiring
Cable
The cable can be extended up to 100 m provided that the thickness
of the cable is 0.3 mm2 minimum.
Repeated Cable Bending
The cable must not be bent repeatedly.
High-tension Lines
The power supply lines of the Sensor must not be wired alongside
power lines or high-tension lines in the same conduit, otherwise the
Sensor may become damaged or malfunction due to induction noise
that may be generated from the power lines or high-tension lines.
Route the lines separately or in a single conduit.
Cable Pulling Force
Do not pull cables with pulling forces exceeding 50N.
Mounting
Screw Tightening
Make sure that the casing is tightened to a maximum torque of 1.2 N
o m.
Mounting Direction
When Sensors are mounted to face each other, make sure to adjust
the optical axes so that the Sensors will not be mutually interfered.
Others
EEPROM Write Error
An EEPROM error may result if power supply to the Sensor fails or
the Sensor is influenced by static noise, in which case the threshold
level indicators will flash. Perform the teaching and threshold level
setting of the E3M-V again.
M12 Metal Connector
Make sure to connect or disconnect the metal connector after turning
off the E3M-V.
Make sure to hold the connector cover when connecting or discon-
necting the metal connector.
Tighten the metal connector securely by hand. Do not use any tool,
such as pliers, otherwise the metal connector may be damaged.
If the metal connector is not tightened securely, the metal connector
may be disconnected by vibration and the proper degree of protection
of the E3M-V may not be maintained.
In the interest of product improvement, specifications are subject to change without notice.
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.
Cat. No. E280-E2-01A-X
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