Omron E3M-V - User manual

1
Color 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 dis-
criminates 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 µs and half the size of
OMRON’s conventional models.
Ordering Information
Green light
Shape Connection
th d
Sensing distance Spot diameter
Model
S ape
Co ec o
method
Se s gdsa ce
Spo d a e e
NPN output PNP output
Connector type
(see note)
10± 3 mm
1 x 4 mm E3M-VG11 E3M-VG16
4 x 1 mm E3M-VG21 E3M-VG26
Note: Possible to switch between vertical or horizontal connection using the M12 rotary connector .
Accessories (Order Separately)
Mounting Brackets
Shape Model Quantity Remarks
E39-L131 1
E39-L132 1 For rear mounting
Sensor I/O Connectors
Shape Type Cord type Model
Single-end connector
(
Strai
g
ht
)
2 m
4-wire cord
XS2F-D421-D80-A
(Straight)
5 m XS2F-D421-G80-A
Single-end connector
(L h d)
2 m XS2F-D422-D80-A
g
(L-shaped)
5 m XS2F-D422-G80-A
Note: For details, refer to the Sensor I/O Connectors Catalog (X065) .

E3M-V E3M-V
2
Specifications
Ratings/Characteristics
Item E3M-VG11 E3M-VG21 E3M-VG16 E3M-VG26
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
(wavelength)
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 input
(see note 1)
ON: Short-circuited to 0 or 1.5 V max.
(with a flow current of 1 mA max.)
OFF: Open or V
CC
–1.5 V to V
CC
(with a leakage current of 0.1 mA max.)
ON: VCC –1.5 V to V
CC
(with an absorption current of 3 mA max.)
OFF: Open or 1.5 V max.
(with a leakage current of 0.1 mA max.)
Remote control output
(see note 1)
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 T wo banks selectable. A vailable 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 Ω min. (at 500 VDC)
Dielectric strength 1,000 V AC, 50/60Hz, 1 min.
V ibration resistance
(see note 2)
Destruction: 10 to 55 Hz, 1-mm double amplitude or 150 m/s
2
for 2 hrs each in X, Y , and Z directions
Shock resistance (see
note 3)
Destruction: 500 m/s
2
3 times each in X, Y, and Z directions
Degree of protection IEC60529 IP67 (with protective cover)
Connection method Connector
W eight with package
box
Approx. 100 g
Material Case: Polybutylene terephthalate
Lens: Acrylic (PMMA)
Others Instruction manual
Note: 1. Remote control input and answer-back output share the same signal line.
2. The Sensor withstands 0.75-mm double amplitude or 100 m/s
2
if the mounting bracket is attached to the Sensor .
3.
The Sensor withstands 300 m/s
2
if the mounting bracket is attached to the Sensor .

E3M-V E3M-V
3
Engineering Data
Sensing Distance vs. Incident
Characteristics (Typical)
E3M-VG1j
Angle vs. Incident
Characteristics (X Direction)
E3M-VG1j/VG2j
Angle vs. Incident Character-
istics (Y Direction)
E3M-VG1j/VG2j
Incidence (%)
Distance (mm)
Angle ( °)
Angle ( °)
Standard Sensing Object (Color vs. Munsell)
Japan Color Enterprise’ s Standard Color Card 230
Color Sensing Capacity
E3M-VGjj
Munsell color notation11 standard colors
White
Red
Yellow red
Yellow green
Yellow
Green
Blue green
Blue
Purple
Red purple
N9.5
4R, 4.5/12.0
4YR, 6.0/11.5
5Y , 8.5/1 1.0
3GY , 6.5/10.0
3G, 6.5/9.0
5BG, 4.5/10.0
3PB, 5.0/10.0
7P
, 5.0/10.0
6RP , 4.5/12.5
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
ff ff f f ffff
fffffff
fff
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
fff
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
fffffff
fff f
f
f
f
f
f
f
f
f
ff
f
f
f:
Detectable n : Detectable but unstable X: Not detectable
Black N2.0
Differences in Incident by Color
Incidence (%)
Incidence (%) Incidence (%)
X
n
XX
n
n
f
n
n
f
X
n
X
X
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 .
Sensing object Sensing object
5 to 15°5 to 15°
White
Red
Yellow red
Yellow
Yellow green
Green
Blue green
Blue
Purple
Red purple
Black
Color

E3M-V E3M-V
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Nomenclature
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.
Operation
Output Circuits
Detection
level indi-
cators
(green,
8 levels)
Threshold
indicators
(red,
7 levels)
Main
circuit
Operation
indicator
(orange)
Remote control input
/Answer-back output
Load Load
Control
output
Brown
White
Black
Blue
Detection
level indi-
cators
(green,
8 levels)
Threshold
indicators
(red,
7 levels)
Main
circuit
Operation
indicator
(orange) Load Load
10 to 30 VDC
Control
output
Brown
White
Black
Blue
(See note.)
(See note.)
Remote control input
/Answer-back output
NPN (E3M-VG11, E3M-VG21)
PNP (E3M-VG16, E3M-VG26)
10 to 30 VDC
Connector Pin Arrangement
1
2
4
3
1
4
2
3
100 mA max.
Note: Remote control input and answer-back output share the same line. Be sure to connect the load as shown above if the remote control
function is used.

E3M-V E3M-V
5
Adjustments
Adjustment Steps
1. Install, wire, and turn ON the Photomicrosensor .
2. Perform teaching (mark registration). Refer to
Mark Registra-
tion
(T eaching) .
3. Make
fine adjustments of the threshold level if necessary . Refer
to Threshold Level Adjustments .
4.
Check that the mode selector is set to RUN.
Mark Registration (Teaching)
Refer to the following for ideal teaching.
Application
The base has a
color pattern. The
mark and base are
clearly dif ferent in
color.
The base has no
color pattern. The
mark and base are
slightly dif ferent in
color.
The base has no
color pattern.
Remote teaching
with no positioning
is desired.
One-point
teaching Two-points 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
detected.
Refer to the following for each teaching method. Remote one- or
two-point
teaching is possible. Refer to Remote Control Function .
One-point Teaching
1
Set the mode selector to TEACH.
2
Locate the mark to the sensing position and press the SET
button. Then all the red threshold indicators are ON.
Mark
Sensor
Base Push
Red threshold indicators are ON
.
3Set the mode selector to RUN. The output will be ON
whenever the set mark is detected.
Note: By teaching on the base, reversed output as shown above
(base: ON, mark: OFF) can be obtained.
Two-point Teaching
1
Set the mode selector to TEACH.
2 Locate the mark to the sensing position and press the SET
button. All the red threshold indicators will turn ON.
Mark
Sensor
Push
Red threshold indicators are ON.
Base
3
Mark
Sensor
Push
If teaching is successful, move the mark and press the
SET button at the base.
•If teaching is successful, all the green detection level
indicators are ON.
•If teaching is unsuccessful, all the red threshold level
indicators
flash.
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
4If teaching is successful, set the mode selector to RUN to
complete 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.

E3M-V E3M-V
6
Adjustments
Adjustment Steps
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. (See note.)
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.
(T eaching will be unsuccessful if there is no dif ference 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: 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
Note: Be sure to connect the E3M-V to the Programmable Con -
troller 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 dif ferences.
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. Re -
fer
to Remote Control Function .
1
Set the mode selector to ADJUST .
2 Select the upper or lower threshold setting with the thresh -
old selector . Whenever the SET button is pressed, the
threshold level will move. T wo indicators will be lit together
when the threshold level is an even level.
The threshold level increases.
The threshold level decreases.
Lower
threshold
limit
Press
Upper
threshold
limit
Threshold
indicators
Threshold
level
3After setting the level, set the mode selector to RUN.

E3M-V E3M-V
7
Adjustments
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
Output OFF
Detection
level indi-
cators Operation
indicator
Threshold value
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 indi -
cate the tolerance between the mark and base.
Detection level
Output OFF
Output ON
Threshold
value
Mark
Detection
level indi-
cators Operation
indicator
Threshold value
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
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.
T
iming Chart
Remote
control I/O
Sensor
operation
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
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
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 Auto-teaching
4 T wo-point teaching
(1st and 2nd)
5 One-point teaching
(or input for 1.5 s min.)
6 Threshold level 1 is
selected.
7 Threshold level 3 is
selected.
8 Threshold level 5 is
selected.
9 Threshold level 7 is
selected.
10 Threshold level 9 is
selected.
11 Threshold level 1 1 is
selected.
12 Threshold level 13 is
selected.
Note: The input error of each signal pulse must be within ± 0.1 s.

E3M-V E3M-V
8
Ladder Program Example
Control signals are input by a ladder program as shown below .
Input: 00000
Output: 00100
Others: IR bits
TIM000, TIM001, and TIM002
set values
Dimensions
Note: All units are in millimeters unless otherwise indicated.
Color Mark Sensors
Eight detection level indicators
Seven level threshold indicators Operation indicator
M2.6 nut
M12 Connector
M2.6
10-dia. lens
Optical axis Two, 4.5-dia.
mounting holes
Mounting Holes
Two, M4

E3M-V E3M-V
9
Accessories (Order Separately)
Mounting Brackets
E39-L131
E39-L132
Two,
4.2 dia.
4.2 dia.
Material: Stainless steel (SUS304)
Material: Stainless steel (SUS304)

E3M-V E3M-V
10
Sensor I/O Connectors
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)
Installation
Sensor I/O Connector
Pin No. Cord wire colors
DC/AC
Brown
Blue
Black
Note: 1. Pin No. 2 is not used.
2. For details, refer to the Sensor I/O Connectors Catalog
(X065) .
Classification Wire
color Connector
pin No.
Use
DC Brown 1 Power supply
(+V)
--- 2 ---
Blue 3 Power supply
(0V)
Black 4 Output

E3M-V E3M-V
11
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 T ime
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 af -
ter
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 sup -
ply
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 con-
nected
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
regulator.
Wiring
Cord
The
cord can be extended up to 100 m provided that the thickness of
the cord is 0.3 mm
2
minimum.
Repeated Cable Bending
The cord 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.
Cord Pulling Force
Do not pull cords with pulling forces exceeding 50N.
Mounting
Screw Tightening
Make sure that the casing is tightened to a maximum torque of
1.2 N S 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 W rite 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 turn -
ing
of f 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 protec -
tion
of the E3M-V may not be maintained.

E3M-V E3M-V
12
OMRON Corporation
Industrial Sensors Division
Sensing Devices and Components Division H.Q.
28th Fl., Crystal T ower Bldg.,
1-2-27, Shiromi, Chuo-ku,
Osaka 540-6028 Japan
Phone: [phone] Fax: [phone]
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. T o convert grams into ounces, multiply by 0.03527.
Cat. No. E280-E1-1 In the interest of product improvement, specifications are subject to change without notice.
Printed in Japan
0898-3M (0898) a