Omron E3M-VG11, E3M-VG12, E3M-VG21, E3M-VG22, E3M-VG16 Datasheet

Mark Sensor

E3M-V

• Detects laminated or light-dispersing
objects in stable operation without be­ing influenced by mirror reflection.

• Double indication of the detection level
and threshold level allows easy grasp
of the operating status and easy ad­justment.

• Automatically sets to the optimum
threshold level while sensing objects
are being conveyed and incorporates
an auto-teaching function that discrim­inates between the mark and back­ground 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.

E3M-V

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.

A-133E3M-V

Ordering Information

Sensors

Shape Connection method Setting distance Spot diameter

1 x 4 mm E3M-VG11 E3M-VG16

Connector type

Pre-wired

1.

Possible to switch between vertical or horizontal connection using the M12 rotary connector

1

4 x 1 mm E3M-VG21 E3M-VG26

10+3 mm

1 x 4 mm E3M-VG12 E3M-VG17

4 x 1 mm E3M-VG22 E3M-VG27

Mounting Brackets

Shape Model Quantity Remarks

E39-L131 1

Model
NPN output PNP output

E39-L132 1 For rear mounting

Sensor I/O Connectors

Shape Type Cord type Model

Single-end connector
(Straight)

Single-end connector
(L-shaped)

2 m

5 m XS2F-D421-G80-A

4-wire cord

2 m XS2F-D422-D80-A

5 m XS2F-D422-G80-A

XS2F-D421-D80-A

A-134 Standard Photoelectric Sensors

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)
Power supply voltage 10 to 30 VDC, ripple (p-p) 10% max.
Current consumption 100 mA max.

Control output

Remote control input

Remote control

1

output

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

Ambient illumination
(on receiver lens)

Ambient temperature

Ambient humidity

Insulation resistance 20 M min. (at 500 VDC)
Dielectric strength 1,000 VAC, 50/60Hz, 1 min.
Vibration resistance
Shock resistance
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

Material

Others Instruction manual

1.

Remote controll input and answer-back output share the same signal line.

2.

The Sensor withstands 0.75 mm double amplitude or 100 m/s² if the mounting bracket is attached to the sensor

3.

The Sensor withstands 300 m/s² if the mounting bracket is attached to the sensor.

Green LED (525 nm)

Load power supply voltage: 30 VDC max.
Load current: 100 mA max.
(Residual voltage: 1.2 V max.)
NPN open collector output type

ON: Short-circuited to 0 or 1.5 V max.
(with a flow current of 1 mA max.)

1

OFF: Open or V

CC - 1.5 V to VCC

(with a leakage current of 0.1 mA max.)
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

ON: V

CC - 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.)

Load power supply voltage: 30 VDC max.
Load current: 100 ma max.
(Residual voltage: 2 V max.)
PNP open collector output type

ON: 50 µs max.
OFF: 70 µs max.

Incandescent lamp: 3,000 lx max.
Sunlight: 10,000 lx max.

Operating: -20°C to 55°C/Storage: -30°C to 70°C
(with no icing)

Operating: 35% to 85%/Storage: 35% to 95°C
(with no condensation)

2

Destruction: 10 to 55 Hz, 1-mm double amplitude or 150 m/s2 for 2 hrs each in X, Y, and Z directions

3

Destruction: 500 m/s2 3 times each in X, Y, and Z directions

Approx. 100 g

Case: Polybutylene terephthalate
Lens: Acrylic (PMMA)

E3M-V

A-135E3M-V

Engineering Data

Sensing Distance vs. Incident
Characteristics (Typical)

E3M-VG1@

Incidence (%)

Distance (mm)

Color Sensing Capacity

E3M-VG@@

Yellow

Yellow

@@@

@
@
@
@
@
@

Green

green

@

@

@

@

@
@
@

@
@

@
@@
@@@ @

White

Red

Yellow
red

Yellow
Green

yellow
Green
Blue

green

Blue

Purple
Red

purple

Black

Red

Yellow
red

White

@@@@@@@@@@

@

@
@
@
@
@
@
@
@

@@@@@@@

@

@

@

@
@

@
@

@

@

@

@

X

@

X

@@@@@@@

∆

Angle vs. Incident
Characteristics (X Direction)

E3M-VG1@/VG2@

Incidence (%)

Blue
green

@
@
@
@

∆

@

Blue

@
@
@

∆

∆

@

Purple

X

@
@
@
@

∆

Red
purple

X

@@@
@
@
@
@
@
@

X

Black

∆

@
@
@
@
@
@

X

Angle vs. Incident
Characteristics (Y Direction)

E3M-VG1@/VG2@

Incidence (%)

Angle (˚) Angle (˚)

Differences in Incident by Color

Incidence (%)

White

Red

Yellow red

Yellow

Yellow green

Green

Blue green

Blue

Purple

Red purple

Color

Black

@

: Detectable

∆: Detectable but unstable X: Not detectable

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.

5 to 155

Sensing object

5 to 155

Sensing object

Standard Sensing Object (Color vs. Munsell)

Japan Color Enterprises Standard Color Card 230

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

A-136 Standard Photoelectric Sensors

Nomenclature

E3M-V

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.

Operation

Output Circuits

NPN (E3M-VG11, E3M-VG12, E3M-VG21, E3M-VG22)

Brown
Detection
level indi­cators
(green,
8 levels)

Operation
indicator
(orange)

Threshold
inidcators
(red,
13 levels)

Main
circuit

1

White

2

Remote control input
/Answer-back output

Black

4

Blue

3

Load Load

(See note.)

Control
output

100 mA max.

10 to 30 VDC

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.

PNP (E3M-VG16, E3M-VG17, E3M-VG26, E3M-VG27)

Brown
Detection
level indi­cators
(green,
8 levels)

Operation
indicator
(orange)

Threshold
inidcators
(red,
13 levels)

Main
circuit

1

Black

4

Remote control input
/Answer-back output

2

White

Blue

3

Control
output

Load Load

(See note.)

Connector Pin Arrangement

10 to 30 VDC

A-137E3M-V

Adjustments

Adjustment Steps

1. Install, wire, and turn ON the Photomicrosensor.

2. Perform teaching (mark registration). Refer to Mark Registration
(Teaching).

Mark Registration (Teaching)

Refer to the following for ideal teaching.

Application

The base has a color
pattern. The mark
and base are clearly
different in color.

The base has no col­or pattern. The mark
and base are slightly
different in color.

The base has no col­or pattern. Remote
teaching with no po­sitioning 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.

Refer to the following for each teaching method. Remote one- or two­point teaching is possible. Refer to Remote Control Function.

One-point Teaching

Set the mode selector to TEACH.

1

Locate the mark to the sensing position and press the SET but-

2

ton. Then all the red threshold indicators are ON.

Sensor

Mark

Base

Push

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 de­tected.

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.

Two-point Teaching

Set the mode selector to TEACH.

1

Locate the mark to the sensing position and press the SET but-

2

ton. All the red threshold indicators will turn ON.

Sensor

Mark

Base

Push

Push

Red threshold indicators are ON.

Green detection level
indicators are ON.

Teaching
is OK

All the red threshold level

indicators will flash if there
is no difference in incide

nt.

Base

If teaching is successfull, move the mark and press the SET

3

button at the base.

• If teaching is successfull, all the green detection level indica­tors are ON.

• If teaching is unsuccessfull, all the red threshold level indica­tor flash.

Sensor

Mark

Red threshold indicators are ON.

Set the mode selector to RUN. The output will be ON whenever

3

the set mark is detected.

Note: By teaching on the base, reversed output as shown above (base: ON,

mark: OFF) can be obtained.

Teaching is NG

If teaching is successful, set the mode selector to RUN to com-

4

plete the teaching operation. If teaching is unsuccessful, restart
from the above step 2.

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.

A-138 Standard Photoelectric Sensors

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.

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.

Auto-teaching

Teaching starts

1

Teaching completes and detection starts

E3M-V

Remote control input/
Answer-back output

Incident

Auto-teaching

Dummy sampling (1st mark)

Example of Connection to Programmable Controller

Sensor

Remote control I/O

Note: Be sure to connect the E3M-V to the Programmable Controller as shown

above.

Programmable Controller

I/O Unit

Output
Input

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.

Answer-back

Time

Mark (shorter passing time):
Output ON

Optimal threshold level set

Base: Output OFF

Sampling (5th mark)

Time

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 .

Set the mode selector to ADJUST

1

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.

The threshold level increases.

Upper
threshold
limit

Press

2

The threshold level decreases.

Lower
threshold
limit

1.

Make sure that the input tolerance of each pulse is within ±0.1 s.

Threshold
indicators

Threshold
level

After setting the level, set the mode selector to RUN.

3

A-139E3M-V

Detection Level Indicator

Detection Level Indicator

The control output of the E3M-V will be turned ON if the detection lev­el 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 confor­mity to the mark's color.

Detection level

Output OFF

Output ON

Threshold
value

Mark

Detection level
indicators

Operation
indicator

Control Signals

No. Control signal Function

1

Bank 1 is selected (operation
indicator OFF in TEACH
mode)

2

Bank 2 is selected (operation
indicator ON in TEACH
mode)

3

4

Auto-teaching

Two-point teaching (1st and
2nd)

5

One-point teaching (or input
for 1.5 s min.)

Threshold
value

Output OFF

Threshold value

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.

Detection level

Detection level

Output ON

Output OFF

Mark

Threshold
value

Base

indicators

Threshold value

Operation
indicator

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 re­mote 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

Answer-back output: ON
only when the process
completes normally.

2.5 s min.

6

7

8

9

10

11

Threshold level 1 is selected.

Threshold level 3 is selected.

Threshold level 5 is selected.

Threshold level 7 is selected.

Threshold level 9 is selected.

Threshold level 11 is
selected.

12

Threshold level 13 is
selected.

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.

TIM000, TIM001, and TIM002
set values

Remote
control I/O

Sensor
operation

Note: If Signals are sent continuously, make sure that there is an interval of

2.5 s between signal inputs as shown above.

2.0 s

Input signal

Input discrimination
(1.8 s)

change

A-140 Standard Photoelectric Sensors

0.3 s

Next
input
signal

Detection restartsSetting

Input: 00000
Output: 00100
Others: IR bits

Dimensions

Note: All units are in millimeters unless otherwise indicated.

Mark Sensors

Connector Models

Eight detection level indicators

Seven level threshold indicators

E3M-V

Operation indicator

M2.6

Optical axis

Pre-Wired Models

10-dia. lens

67.8

47.8
45

Two, 4.5-dia.
mounting holes

Two, 4.5 dia.
mounting holes

25

29

M2.6 nut

M12 Connector

Mounting Holes

Two, M4

43

Vinyl-insulated round cable with three
conductors, 6 dia. (17
standard length: 2 m

x 0.16 dia.);

A-141E3M-V

Accessories (Order Separately)

Mounting Brackets

E39-L131

905+15

Material: Stainless steel (SUS304)

E39-L132

Two ,

4.2 dia.

905+15

Material: Stainless steel (SUS304)

4.2 dia.

A-142 Standard Photoelectric Sensors

Sensor I/O Connectors

Single-end Connector (Straight Model)
XS2F-D421-D80-A (L=2 m)

XS2F-D421-G80-A (L=5 m)

5 dia.

Single-end Connector (L-shaped Model)
XS2F-D422-D80-A (L=2 m)
XS2F-D422-G80-A (L=5 m)

Installation

5 dia.

14.9 dia.

6 dia.

6 dia.

E3M-V

Sensor I/O Connector

Pin No. Wire colors

Note: 1 .pin No. 2 is not used.

2 .For details, refer to the Sensor I/O Connectors Catalog

(X065)

Brown
White
Blue
Black

DC/AC

Classification Wire color

Brown 1

DC

--- 2 ---

Blue 3

Black 4 Output

Connector

pin No.

Use

Power supply
(+V)

Power supply
(0V)

A-143E3M-V

Precautions

Observe the following precautions to ensure safety.

• Do not use the Sensor in locations subject to flammable or explo­sive 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 E3M­V 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 E3M­V may malfunction due to the switching noise of the switching regula­tor.

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 discon­necting 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.

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

In the interest of product improvement, specifications are subject to change without notice.

A-144 Standard Photoelectric Sensors