E3M-VG21 - Omron Automation and Safety

Color Mark Sensor

E3M-V

Great for Irregularities and

Lamination, an Easy-to-use Mark

Sensor

Be sure to read Safety Precautions on

page 5.

Ordering Information

Sensors

* Switchable between vertical and horizontal directions with a rotation connector.

Accessories (Order Separately)

Mounting Brackets

Sensor I/O Connectors

Appearance Connection method Sensing distance Spot diameter Model

NPN output PNP output

Connector (M12)*

1 × 4 mm E3M-VG11 E3M-VG16

4 × 1 mm E3M-VG21 E3M-VG26

Appearance Model Quantity Remarks

E39-L131 1---

E39-L132 1 For rear mounting

Cable Appearance Cable type Model

Standard

2 m

4-wire

XS2F-D421-D80-A

5 m XS2F-D421-G80-A

2 m XS2F-D422-D80-A

5 m XS2F-D422-G80-A

Green

3 mm

Straight

L-shaped

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E3M-V

Ratings and Specifications

*1. A single cable is shared for remote control input and answer-back output.

*2. 0.75-mm double amplitude or 100 m/s2 when using a Mounting Bracket.

*3. 300 m/s2 when using a Mounting Bracket.

Item Model E3M-VG11 E3M-VG21 E3M-VG16 E3M-VG26

Sensing distance 10 ± 3 mm

Spot size

(horizontal × vertical) 1 × 4 mm 4 × 1 mm 1 × 4 mm 4 × 1 mm

Light source

(wavelength) Green LED (525 nm)

Power supply voltage 10 to 30 VDC including 10% (p.p) ripple

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

Load power supply voltage: 30 VDC max., Load current:

100 mA max. (Residual voltage: 2 V max.), PNP open col-

lector output

Remote control input *1

ON: Short-circuit to 0 V or 1.5 V max. (Outflow current 1 mA max.)

OFF: Open or Vcc-1.5 V to Vcc (Leakage current 0.1 mA max.)

ON: Vcc-1.5 V to Vcc (Inlet current 3 mA max.)

OFF: Open or 1.5 V max. (Leakage current 0.1 mA max.)

Remote control output *1

Load power supply voltage: 30 VDC max., Load current: 100 mA max.

(Residual voltage: 1.2 V max.), NPN open collector output

Load power supply voltage: 30 VDC max., Load current: 100 mA max.

(Residual voltage: 2 V max.), PNP open collector output

Bank selection 2-bank selection (Performed by remote control only. Refer to the remote control function for details.)

Protective circuits Power supply reverse polarity protection, Load short-circuit protection

Response time ON: 50 μs max., OFF: 70 μs max.

Sensitivity adjustment Teaching system

Ambient illumination

(Receiver side) Incandescent lamp: 3,000 lx max., Sunlight 10,000 lx max.

Ambient temperature

range Operating: −20 to 55°C, Storage: −30 to 70°C (with no icing)

Ambient humidity

range Operating: 35% to 85%, Storage: 35% to 95% (with no condensation)

Insulation resistance 20 MΩmin. at 500 VDC

Dielectric strength 1,000 VAC, 50/60 Hz for 1 min

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

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

Degree of protection IEC 60529 IP67 (with Protective Cover attached)

Connection method M12 Connector

Weight (packed state) Approx. 100 g

Material Case PBT (polybutylene terephthalate)

Lens Mechacrylic resin

Accessories Instruction manual

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E3M-V

Engineering Data (Typical)

Sensing Distance vs Incident Level

Characteristics

Angle - Incident Level Characteristics

(X Direction)

Angle - Incident Level Characteristics

(Y Direction)

E3M-VG1@E3M-VG1@/-VG2@E3M-VG1@/-VG2@

Color Detection

E3M-VG@@ Difference in Incident Level by Color Conditions

5 6 7 8 9 10 11 12 13 14 15

100

Incident level (%)

Distance (mm)

-10 -8 -6 -4 -2 0 2 4 6 8 10

100

Incident level (%)

Angle (

)

E3M-

VG1 @

E3M-

VG2 @

-10 -8 -6 -4 -2 0 2 4 6 8 10

Angle (°)

100

Incident level (%)

E3M-

VG1 @

E3M-

VG2 @

: Detectable : Detectable but unstable ×: Not detectable

White Red

Yellow/

red

Yellow

Yellow/

green

Green Blue/

green Blue Purple Red/

purple Black

White

Red

Yellow/

red

Yellow

Yellow/

green

Green

Blue/

green

Blue

Purple

Red/

purple

× ×

Black

100

Relative incident level (%)

Color

100

White

Red

Yellow/

red

Yellow

Yellow/

green

Green

Blue/

green

Blue

Purple

Red/

purple

Black

Standard Sensing Object and Colors

(Standard Color Card (230 Colors) for

Japan Color Enterprise Co., Ltd.)

Color (11 stan-

dard 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

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E3M-V

I/O Circuit Diagrams

NPN output

* A single cable is shared for remote control input and answer-back output. Be sure to install a load as shown in the diagram for the remote control function.

PNP output

* A single cable is shared for remote control input and answer-back output. Be sure to install a load as shown in the diagram for the remote control function.

Plug (Sensor I/O Connector)

Technical Guide

Detection of Metal or Glossy Objects

Color detection can be improved by inclining the Sensor to prevent it

from picking up regular reflection.

Nomenclature

Model Output circuit

E3M-VG11

E3M-VG21

Model Output circuit

E3M-VG16

E3M-VG26

8-level

detection

indicator

(green)

13-level

threshold

indicator

(red)

Operation

indicator

(orange)

Photoelectric

Sensor main

circuit

Load Load

Control

output

Brown

White

Remote control input/

Answer-back output

Black

Blue

10 to 30 VDC

100 mA

max.

[Connector Pin Arrangement]

8-level

detection

indicator

(green)

13-level

threshold

indicator

(red)

Operation

indicator

(orange)

Photoelectric

Sensor main

circuit

Load Load

Control

output

Brown

Black

Remote control input/

Answer-back output

White

Blue

10 to 30 VDC

[Connector Pin Arrangement]

* Used for both of remote control input and answer-back output

Class Wire color

Connector pin No.

Application

Brown 1 Power supply (+V)

White 2 *

Blue 3

Power supply (0 V)

Black 4 Output

Brown

White

Blue

Black

Terminal No. Wire color

XS2F-D421-D80-A

XS2F-D421-G80-A

XS2F-D422-D80-A

XS2F-D422-G80-A

Detected object

5 to 15 °

Detected object

5 to 15 °

Operation Indicator (orange)

lits when output is ON.

Detection Level Indicator (green)

lits according to detection level.

SET Button

Adjusts teaching

operation and threshold level.

Mode Selector

Selects mode.

Threshold Indicator (red)

Displays threshold level.

Up/Down Selector

To raise threshold

level ... Select .

To reduce threshold

level ... Select .

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E3M-V

Safety Precautions

Refer to Warranty and Limitations of Liability.

This product is not designed or rated for ensuring

safety of persons either directly or indirectly.

Do not use it for such purposes.

Do not use the product in atmospheres or environments that exceed

product ratings.

● Designing

Power Supply

A power supply with full- or half-wave rectification cannot be

connected.

● Wiring

Tensile Strength of Cables

The tensile strength of the cable should not exceed 50 N.

● Mounting

Tightening Force

The tightening force applied to the Fiber Unit should not exceed 1.2

N·m.

Mounting the Sensor

If Sensors are mounted face-to-face, make sure that the optical axes

are not in opposition to each other. Otherwise, mutual interference

may result.

● Others

EEPROM Writing Error

An EEPROM error may result if the power supply to the Sensor fails

or the Sensor is influenced by static noise. The threshold indicators

will flash if there is an EEPROM error, in which case perform teaching

and make threshold level settings again.

WARNING

Precautions for Correct Use

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E3M-V

(Unit: mm)

Dimensions Unless otherwise specified, the tolerance class IT16 is used for dimensions in this data sheet.

Sensors

Accessories (Order Separately)

Mounting Brackets

E3M-VG

47.7

45 Two, 4.5 dia.

mounting holes

10-dia. lensOptical axis

68.5

M12 Connector

2-M4

Operation indicator (orange)

8-level Indicator (green)

7-level Threshold Indicator (red)

M2.6

Mounting Holes

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Operating Procedures: Photoelectric Sensors

E3M-V

Adjustment Steps

Registering (Teaching) Marks

Select the most appropriate teaching method in reference to the following descriptions.

Refer to the following descriptions for each teaching method. One-point teaching and two-point teaching can be controlled

remotely. ➜Refer to Remote Control Function on page 10.

Note: The reverse of the output described above (Background: ON, Mark: OFF) can be obtained by teaching using the background.

Continued on next page

Step Operation

1Install, wire, and turn ON the Sensor.

2Register (i.e., teach) the marks. ➜Refer to Registering Marks on this page to page 8.

3Adjust thresholds as required. ➜Refer to Adjusting Thresholds on page 9.

4Check that the mode selector switch is set to RUN.

Application

1 2 3

Detection of clear color differences

between the mark and the

background when the background

has a color pattern.

Detection of slight color differences

between the mark and background

when the background has no color

pattern.

Remote teaching without positioning

when the background has no color

pattern.

Teaching method 1One-point teaching 2Two-point teaching 1Automatic teaching

Output ON range The default value will be set, and the

output will turn ON at the mark.

The threshold will be set in the

middle between the mark and the

background, and the output will turn

ON at the mark.

The threshold will be set in the

middle between the mark and the

background, and the output will turn

ON at the mark (which has the

shortest passage time).

1One-point Teaching

Step Operation method Operation condition

1Set the mode selector switch to TEACH.

2Place the mark in the specified location, and press the SET Button.

The threshold indicators (red) will light.

3Set the mode selector switch to RUN.

The output will turn ON at the set mark.

2Two-point Teaching

Step Operation method Operation condition

1Set the mode selector switch to TEACH.

2Place the mark in the specified location, and press the SET Button.

The threshold indicators (red) will light.

LEVEL

OUT

TEACH

RUN

SET

ADJ

LEVEL

OUT

TEACH

RUN

SET

ADJ

Press

Mark

Sensor

Background

Threshold indicators (red) lit

LEVEL

OUT

TEACH

RUN

SET

ADJ

LEVEL

OUT

TEACH

RUN

SET

ADJ

Press

Threshold indicators (red) lit

Mark

Sensor

Background

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Operating Procedures: Photoelectric Sensors

Note: These teaching steps are for turning output ON at the mark. The output can be set to turn On at the background and turn OFF at the mark by reversing the order

of teaching.

Note: Set input error of each signal pulse to within ±0.1 s.

Automatic Teaching

Example of Connection with Programmable Controller

Note: Connect the Sensor as shown in the figure above when connecting it to

a Programmable Controller.

Precautions for Using Automatic Teaching

In the following application conditions, incorrect judgment

may occur using automatic tuning. If this occurs, use one-

point teaching or two-point teaching.

•The background has a color pattern.

•There is a lot of variation in the samples.

•The surface has height differences or protrusions.

Step Operation method Operation condition

If the teaching is OK, move the mark and press the SET button when

the mark is at the position of the background.

• If the teaching is OK, the detection level indicators (green) will all

be lit.

• If the teaching fails, the threshold indicators (red) will all flash.

If the teaching is OK, the setting will be completed.

Set the mode selector switch to RUN.

If the teaching fails, perform the setting again from step 2.

3Automatic Teaching

Step Operation

1Check that the mode selector switch is set to either RUN or ADJUST.

2A pulse of 0.9 s (see note) will be input to the remote control input/output.

Teaching will be performed automatically when the mark is moved. (Teaching will be completed after the mark passes six times.)

• If teaching is OK, answer-back of 0.3 s will be output from the remote control input/output.

• If teaching fails, answer-back will not be output. In this case, perform the adjustment again using two-point teaching.

(Teaching will not be OK if there is no difference in light levels between the mark and the background.)

4If answer-back is detected, the setting will be completed. The output will turn ON at the mark (which has the shortest passage

time), and measurement will start.

LEVEL

OUT

TEACH

RUN

SET

ADJ

LEVEL

OUT

TEACH

RUN

SET

ADJ

LEVEL

OUT

TEACH

RUN

SET

ADJ

Press

Detection level indicators (green) lit

Threshold indicators (red)

flashing (with no difference

in light level)

Mark

Sensor

Background

1.8 s 0.3 s

Teaching completed.Sensing restarts.

0.9 s

Automatic

teaching Answer-back

OFF

Remote control input/

answer-back output

Incident light

level

1’ 2’ 3’ 4’ 5’

12345

Teaching starts.

Dummy sampling

(1 mark)

Sampling

(5 marks)

Time

Mark (short time)→Output ON

Threshold setting at best position

Background (long time)→Output OFF

I/O Unit

Programmable Controller

Output

Input

Sensor

Remote control

input/output

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Operating Procedures: Photoelectric Sensors

Adjusting Thresholds

Fine adjustment of thresholds can be performed after teaching.

Operation can be performed remotely.

➜Refer to Remote Control Function on the next page.

Detection Level Indicators

The control output will turn ON if the detection level exceeds the threshold level. The detection level display will depend on the

teaching method.

One-point Teaching

Two thresholds (i.e., above and below the mark) are set. The

indicators show the degree of match with the mark.

Two-point teaching and Automatic Teaching

A threshold is set in the middle between the mark (first

registration) and background (second registration). The

indicators show the level of excess gain between the mark

and the background.

Step Operation method Operation condition

1Set the mode selector switch to ADJUST.

In the ADJUST mode, specify the direction of adjustment using the

Up/Down selector switch. The threshold will transition each time the

SET Button is pressed.

(Two indicators will be lit at the same time for even-numbered

threshold levels.)

3After the setting is completed, set the mode selector switch to RUN.

LEVEL

OUT

TEACH

RUN

SET

ADJ

LEVEL

OUT

TEACH

RUN

SET

ADJ

LEVEL

OUT

TEACH

RUN

SET

ADJ

Press

Downward

selection

Upward

selection

Moving the threshold up

Moving the threshold down

Thresh-

old

indica-

tors

Thresh-

old 1 2 3 4 5 6 7 8 9 10 11 12 13

Detection level

Operation

indicator

Detection level

indicators

Threshold

Output OFF

Threshold

Mark

Threshold

Output OFF

Output ON

Detection level Operation

indicator

Detection level

indicators

Threshold

Mark

Threshold

Background

Output OFF

Output ON

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Operating Procedures: Photoelectric Sensors

Remote Control Function (Bank Selection, Mark Registration, Threshold Adjustment)

In RUN mode and ADJUST mode, remote operation can be performed by inputting the signals in the following table for the remote

control input/answer-back output. There will be answer-back output for 0.3 s if the signal is correctly received.

Only one-point teaching can also be operated with manual input.

(Provide input for 1.5 s min.)

Timing Chart

*If consecutive signals are to be sent, allow an interval of at least 2.5 s after the

signal is input, as in the figure above.

Example of Ladder Programming

Control signals can be created using the example of ladder

programming shown in the following figure.

Control Signals

Note: Set input error of each signal pulse to within ±0.1 s

Remote control

input/output

2.5 s min. *

1.5 s

2.0 s

Input signal Next input

signal

Input judgment (1.8 s) Setting

changes.

Sensing restarts.

0.3 s

OFF

Sensor operation

Answer-back output only if processing of

the signal is properly completed.

05001

05002

00100

05000

END

TIM000

#XXXX

TIM001

#YYYY

TIM002

#ZZZZ

05000

00000 T000

05001

T000 T001

05002

T001 T002

05002

05000

TIM000, TIM001, TIM002 set values

(XXXX, YYYY, ZZZZ)

No.1: (0000, 0000, 0003)

No.2: (0000, 0000, 0006)

No.3: (0000, 0000, 0009)

No.4: (0000, 0000, 00012)

No.5: (0000, 0000, 00015)

No.6: (0003, 0003, 0003)

No.7: (0003, 0006, 0003)

No.8: (0003, 0009, 0003)

No.9: (0003, 0003, 0006)

No.10: (0003, 0006, 0006)

No.11: (0003, 0003, 0009)

No.12: (0006, 0003, 0003)

Input: 00000

Output: 00100

Others: Work bits

No. Control signal Function

Bank 1 selection

(Operation indicator OFF in TEACH

mode)

2Bank 2 selection

(Operation indicator lit in TEACH mode)

3Automatic teaching

4Two-point teaching (first and second)

5One-point teaching (input of 1.5 s min.

also possible)

6Threshold 1 selection

7Threshold 3 selection

8Threshold 5 selection

9Threshold 7 selection

10 Threshold 9 selection

11 Threshold 11 selection

12 Threshold 13 selection

0.3 s

OFF

0.6 s

OFF

0.9 s

OFF

1.2 s

OFF

1.5 s

OFF

0.3 s 0.3 s 0.3 s

OFF

0.3 s 0.6 s 0.3 s

OFF

0.3 s 0.9 s 0.3 s

OFF

0.3 s 0.3 s

0.6 s

OFF

0.3 s 0.6 s0.6 s

OFF

0.3 s 0.3 s

0.9 s

OFF

0.3 s 0.3 s

0.6 s

OFF

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Photoelectric Sensors Technical Guide

General Precautions

For precautions on individual products, refer to Safety Precautions in individual product information.

These Sensors cannot be used in safety devices for

presses or other safety devices used to protect

human life. These Sensors are designed for use in

applications for sensing workpieces and workers

that do not affect safety.

To ensure safety, always observe the following precautions.

● Wiring

● Operating Environment

(1) Do not use a Sensor in an environment where there are explosive or inflammable gases.

(2) Do not use the Sensor in environments where the cables may become immersed in oil or other liquids or where liquids may penetrate the

Sensor. Doing so may result in damage from burning and fire, particularly if the liquid is flammable.

WARNING

Precautions for Safe Use

Item Typical examples

Power Supply Voltage

Do not use a voltage in

excess of the operating

voltage range.

Applying a voltage in excess

of the operating voltage

range, or applying AC power

(100 VAC or greater) to a DC

Sensor may cause explosion

or burning.

---

Load Short-circuiting

Do not short-circuit the load.

Doing so may cause explo-

sion or burning.

Incorrect Wiring

Do not reverse the power

supply polarity or otherwise

wire incorrectly. Doing so

may cause explosion or

burning.

Connection without a

load

If the power supply is

connected directly without a

load, the internal elements

may burst or burn. Be sure to

insert a load when

connecting the power

supply.

Load

Sensor

Brown

Blue Black

• DC Three-wire NPN Output Sensors

(Load

short

circuit)

Load

Sensor

Brown

Blue Black

• DC Three-wire NPN Output Sensor

(Load short circuit)

Load

Sensor

Brown

Blue

• AC Two-wire Sensors

Example: E3E2

Load

Sensor

Brown

Blue Black

• DC Three-wire NPN Output Sensors

Example: Incorrect Polarity

Load

Sensor

Brown

Blue Black

Sensor

Brown

Black Blue

• DC Three-wire NPN Output Sensors

Example: Incorrect Polarity Wiring

12 to

24VDC

Sensor

Brown

Blue

Black

• DC Three-wire NPN Output Sensors

Sensor

Brown

Blue

• AC 2-wire Sensors

Example: E3E2 etc.

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Photoelectric Sensors Technical Guide

● Design

Power Reset Time

The Sensor will be ready to detect within approximately 100 ms after

the power is turned ON.

If the Sensor and the load are connected to separate power supplies,

turn ON the Sensor power before turning ON the load power. Any

exceptions to this rule are indicated in Safety Precautions in individual

product information.

Turning OFF Power

An output pulse may be generated when the power is turned OFF. It

is recommended that the load or load line power be turned OFF

before the Sensor power is turned OFF.

Power Supply Types

An unsmoothed full-wave or half-wave rectifying power supply cannot

be used.

Mutual Interference

Mutual interference is a state where an output is unstable because the Sensors are affected by light from the adjacent Sensors.

The following measures can be taken to avoid mutual interference.

Precautions for Correct Use

Counter-

measure Concept Through-beam Sensors Reflective Sensors

Use a Sensor

with the

interference

prevention

function.

If Sensors are mounted in close proximity, use Sensors with the interference prevention function.

10 or fewer Sensors: E3X-DA@-S, E3X-MDA, E3C-LDA Fiber Sensors

Performance, however, will depend on conditions. Refer to pages E3X-DA-S/E3X-MDA

and E3C-LDA.

5 or fewer Sensors: E3X-NA Fiber Sensors

2 or fewer Sensors: E3T, E3Z, E3ZM, E3ZM-C, E3S-C, E3G-L1/L3, or E3S-C Built-in Amplifier Photoelectric

Sensors (except Through-beam Sensors)

E3C Photoelectric Sensor with separate amplifier

Install an

inference

prevention

filter.

A mutual interference prevention polarizing filter can be

installed on only the E3Z-TA to allow close-proximity

mounting of up to 2 Sensors.

Mutual Interference Prevention Polarizing Filter: E39-E11

---

Separate

Sensors to

distance where

interference

does not occur.

Check the parallel movement distance range in the

catalog, verify the set distance between adjacent

Sensors, and install the Sensors accordingly at a

distance at least 1.5 times the parallel movement

distance range.

If the workpieces move from far to near, chattering may

occur in the vicinity of the operating point. For this type of

application, separate the Sensors by at least 1.5 times the

operating range.

Alternate

Emitters and

Receivers.

Close mounting of Sensors is possible by alternating

the Emitters with the Receivers in a zigzag fashion (up

to two Sensors). However, if the workpieces are close

to the Photoelectric Sensors, light from the adjacent

Emitter may be received and cause the Sensor to

change to the incident light state.

---

Offset the

optical axes.

If there is a possibility that light from another Sensor

may enter the Receiver, change the position of the

Emitter and Receiver, place a light barrier between the

Sensors, or take other measures to prevent the light

from entering the Receiver.

(Light may enter even if the Sensors are separated by

more than the sensing distance.)

If Sensors are mounted in opposite each other, slant the

Sensors as shown in the following diagram. (This is

because the Sensors may affect each other and cause

output chattering even if separated by more than the

Sensor sensing distance.)

6Adjust the

sensitivity.

Lowering the sensitivity will generally help.

1.5 × L

Sensor Sensor

Workpiece

Emitter

Receiver

Emitter

Workpiece

Sensor Sensor

θθ

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Photoelectric Sensors Technical Guide

Noise

Countermeasures for noise depend on the path of noise entry, frequency components, and wave heights. Typical measures are as given in the

following table.

● Wiring

Cable

Unless otherwise indicated, the maximum length of cable extension is

100 m using wire that is 0.3 mm2 or greater.

Exceptions are indicated in Safety Precautions in individual product

information.

Cable Tensile Strength

When wiring the cable, do not subject the cable to a tension greater than

that indicated in the following table.

Note: Do not subject a shielded cable or coaxial cable to tension.

Repeated Bending

Normally, the Sensor cable should not be bent repeatedly.

(For bending-resistant cable, see Attachment to Moving Parts on

page C-4.)

Separation from High Voltage (Wiring Method)

Do not lay the cables for the Sensor together with high-voltage lines

or power lines. Placing them in the same conduit or duct may cause

damage or malfunction due to induction interference. As a general

rule, wire the Sensor in a separate system, use an independent metal

conduit, or use shielded cable.

Work Required for Unconnected Leads

Unused leads for self-diagnosis outputs or other special functions

should be cut and wrapped with insulating tape to prevent contact with

other terminals.

Type of noise Noise intrusion path and countermeasure

Before countermeasure After countermeasure

Common mode noise

(inverter noise)

Common noise

applied between the

mounting board and

the +V and 0-V

lines, respectively.

Noise enters from the noise source through the frame

(metal).

(1) Ground the inverter motor (to 100 Ω or less)

(2) Ground the noise source and the power supply (0-V

side) through a capacitor (film capacitor, 0.22 μF, 630

V).

(3) Insert an insulator (plastic, rubber, etc.) between the

Sensor and the mounting plate (metal).

Radiant noise

Ingress of high-fre-

quency electromag-

netic waves directly

into Sensor, from

power line, etc.

Noise propagates through the air from the noise source

and directly enters the Sensor.

•Insert a shield (copper) plate between the Sensor and

the noise source e.g., a switching power supply).

•Separate the noise source and the Sensor to a distance

where noise does not affect operation.

Power line noise

Ingress of electromag-

netic induction from

high-voltage wires

and switching noise

from the switching

power supply

Noise enters from the power line. •Insert a capacitor (e.g., a film capacitor), noise filter (e.g.,

ferrite core or insulated transformer), or varistor in the

power line.

Sensor

Noise

Inverter

motor

Mounting block

(metal)

Sensor

Insert an insulator.

Inverter motor

Noise

Mounting block

(metal)

(3)

(2)

(1)

Noise

Sensor

Noise

source

Sensor

Shield plate (copper)

Noise

source

Sensor

Noise

Noise +V

Sensor

Insert a capacitor, etc.

Noise +V

Cable diameter Tensile strength

Less than 4 mm 30 N max.

4 mm or greater 50 N max.

Power line

http://www.ia.omron.com/ C-3

Photoelectric Sensors Technical Guide

Power Supply

When using a commercially available switching regulator, ground the

FG (frame ground) and G (ground) terminals.

If not grounded, switching noise in the power supply may cause

malfunction.

Example of Connection with S3D2 Sensor Controller

DC Three-wire NPN Output Sensors

Reverse operation is possible using the signal input switch on the

S3D2.

● Mounting

Attachment to Moving Parts

To mount the Photoelectric Sensor to a moving part, such as a robot

hand, consider using a Sensors that uses a bending-resistant cable

(robot cable).

Although the bending repetition tolerance of a standard cable is

approximately 13,000 times, robot cable has an excellent bending

tolerance of approximately 500,000 times.

Cable Bending Destruction Test (Tough Wire Breaking

Test)

With current flowing, bending is repeated to check the number of

bends until the current stops.

The testing conditions of the standard cable and robot cable are

different.

Refer to the values in the above table to check bend-resistant

performance under actual working conditions.

S3D2

Blue 0 V

Black OUT

Brown +12 V

Specimen Standard cable

VR (H) 3 x18/0.12

Robot cable: Strong,

conductive electrical wire

2 x 0.15 mm

, shielded

Test

Description/conditions

Bending

angle (θ)Left/right 90° each Left/right 45° each

Bending

repetitions --- 60 bends/minute

Weight 300g 200g

Operation

per bending

(1) through (3) in

figure once

(1) through (3) in

figure once

Bending

radius of

support

points (R)

5 mm 2.5 mm

Result Approx. 13,000 times Approx. 500,000 times

Weight

(1) (3)

(2)

θθ

http://www.ia.omron.com/ C-4

Photoelectric Sensors Technical Guide

Securing Fibers

The E3X Fiber Unit uses a one-touch locking mechanism. Use the

following methods to attach and remove Fiber Units.

(1) Attaching Fibers

Open the protective cover, insert the fiber up to the insertion mark on

the side of the Fiber Unit, and then lower the lock lever.

(2) Removing Fibers

Open the protective cover, lift up the lock lever, and pull out the fibers.

● Adjustments

Optical Axis Adjustment

Move the Photoelectric Sensor both vertically and horizontally and set

it in the center of the range in which the operation indicator is lit or not

lit. For the E3S-C, the optical axis and the mechanical axis are the

same, so the optical axis can be easily adjusted by aligning the

mechanical axis.

Optical axis: The axis from the center of the lens to the center of

the beam for the Emitter and the axis from the

center of the lens to the center of the reception area

for the Receiver.

Mechanical axis: The axis perpendicular to the center of the lens.

Note:1.To maintain the fiber characteristics, make sure that the lock

is released before removing the fibers.

2. Lock and unlock the fibers at an ambient temperature of

−10 to 40°C.

9mm

Insertion

position

Locked

position

Lock released position

Protective cover

Lock lever

Fiber insertion mark

Fiber

Locked position

Lock released

position

Protective cover

Emitter

Receiver

Incident indicator or Operation indicato

ON OFF

Incident indicator or Operation indicato

Optimum value

ON OFF

Emitter Receiver

Emission beam

Optical axis Optical axis

Mechanical axis

Reception area

http://www.ia.omron.com/ C-5

Photoelectric Sensors Technical Guide

● Operating Environment

Water Resistance

Do not use in water, in rain, or outside.

Ambient Conditions

Do not use this Sensor in the following locations. Otherwise, it may

malfunction or fail.

(1) Locations exposed to excessive dust and dirt

(2) Locations exposed to direct sunlight

(3) Locations with corrosive gas vapors

(4) Locations where organic solvents may splash onto the Sensor

(5) Locations subject to vibration or shock

(6) Locations where there is a possibility of direct contact with water,

oil, or chemicals

(7) Locations with high humidity and where condensation may result

Environmentally Resistive Sensors

The E32-T11F/T12F/T14F/T81F-S/D12F/D82F and E3HQ can be used

in locations (3) and (6) above.

Optical Fiber Photoelectric Sensors in Explosive Gas

Atmospheres

The Fiber Unit can be installed in the hazardous area, and the

Amplifier Unit can be installed in a non-hazardous area.

For explosion or fire due to electrical equipment to occur, both the

hazardous atmosphere and a source of ignition must be in the same

location. Optical energy does not act as an ignition source, thus there

is no danger of explosion or fire. The lens, case, and fiber covering are

made of plastic, so this setup cannot be used if there is a possibility of

contact with solvents that will corrode or degrade (e.g., cloud) the

plastic.

Electrical sparks or high-temperature parts that have sufficient energy

to cause explosion in a hazardous atmosphere are called ignition

sources.

Influence from External Electrical Fields

Do not bring a transceiver near the Photoelectric Sensor or its wiring,

because this may cause incorrect operation.

● Maintenance and Inspection

Points to Check When the Sensor Does Not Operate

•If the Sensor does not operate, check the following points.

(1) Are the wiring and connections correct?

(2) Are any of the mounting screws loose?

(3) Are the optical axis and sensitivity adjusted correctly?

(4) Do the sensing object and the workpiece speed satisfy the ratings

and specifications?

(5) Are any foreign objects, such as debris or dust, adhering to the

Emitter lens or Receiver lens?

(6) Is strong light, such as sunlight (e.g., reflected from a wall), shining

on the Receiver?

(7) Do not attempt to disassemble or repair the Sensor under any

circumstances.

(8) If you determine that the Sensor clearly has a failure, immediately

turn OFF the power supply.

Lens and Case

The lens and case of the Photoelectric Sensor are primarily made of

plastic. Dirt should be gently wiped off with a dry cloth. Do not use

thinner or other organic solvents.

•

The case of the E3ZM, E3ZM-C and E3S-C is metal. The lens,

however, is plastic.

● Accessories

Using a Reflector (E39-R3/R37/RS1/RS2/RS3)

During Application

(1) When using adhesive tape on the rear face, apply it after washing

away oil and dust with detergent. The Reflector cannot be

mounted if there is any oil or dirt remaining.

(2) Do not press on the E39-RS1/RS2/RS3 with metal or a

fingernail.This may weaken performance.

(3) This Sensor cannot be used in locations where oil or chemicals

may splash on the Sensor.

M8 and M12 Connectors

•Be sure to connect or disconnect the connector after turning OFF

the Sensor.

•Hold the connector cover to connect or disconnect the connector.

•Secure the connector cover by hand. Do not use pliers, otherwise

the connector may be damaged.

•If the connector is not connected securely, the connector may be

disconnected by vibration or the proper degree of protection of the

Sensor may not be maintained.

● Others

Values Given in Typical Examples

The data and values given as typical examples are not ratings and

performance and do not indicate specified performance. They are

rather values from samples taken from production lots, and are

provided for reference as guidelines. Typical examples include the

minimum sensing object, engineering data, step (height) detection

data, and selection list for specifications.

Cleaning

•Keep organic solvents away from the Sensor. Organic solvents will

dissolve the surface.

•Use a soft, dry cloth to clean the Sensor.

Non-hazardous area

Amplifier Unit

Fiber Unit

Sensing object

Hazardous area

http://www.ia.omron.com/ C-6

2008.9

OMRON Corporation

Industrial Automation Company

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

Read and Understand This Catalog

Please read and understand this catalog before purchasing the products. Please consult your OMRON representative if you have any questions or

comments.

Warranty and Limitations of Liability

WARRANTY

OMRON's exclusive warranty is that the products are free from defects in materials and workmanship for a period of one year (or other period if

speciﬁ ed) from date of sale by OMRON.

OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, REGARDING NON-INFRINGEMENT, MERCHANTABILITY, OR

FITNESS FOR PARTICULAR PURPOSE OF THE PRODUCTS. ANY BUYER OR USER ACKNOWLEDGES THAT THE BUYER OR USER ALONE

HAS DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE. OMRON DISCLAIMS ALL

OTHER WARRANTIES, EXPRESS OR IMPLIED.

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OMRON SHALL NOT BE RESPONSIBLE FOR SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS, OR COMMERCIAL

LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS, WHETHER SUCH CLAIM IS BASED ON CONTRACT, WARRANTY, NEGLIGENCE, OR

STRICT LIABILITY.

In no event shall responsibility of OMRON for any act exceed the individual price of the product on which liability is asserted.

IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR WARRANTY, REPAIR, OR OTHER CLAIMS REGARDING THE PRODUCTS UNLESS

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SUBJECT TO CONTAMINATION, ABUSE, MISUSE, OR INAPPROPRIATE MODIFICATION OR REPAIR.

Application Considerations

SUITABILITY FOR USE

OMRON shall not be responsible for conformity with any standards, codes, or regulations that apply to the combination of products in the customer's

application or use of the product.

At the customer's request, OMRON will provide applicable third party certiﬁ cation documents identifying ratings and limitations of use that apply to the

products. This information by itself is not sufﬁ cient for a complete determination of the suitability of the products in combination with the end product,

machine, system, or other application or use.

The following are some examples of applications for which particular attention must be given. This is not intended to be an exhaustive list of all possible

uses of the products, nor is it intended to imply that the uses listed may be suitable for the products:

• Outdoor use, uses involving potential chemical contamination or electrical interference, or conditions or uses not described in this catalog.

• Nuclear energy control systems, combustion systems, railroad systems, aviation systems, medical equipment, amusement machines, vehicles, safety

equipment, and installations subject to separate industry or government regulations.

• Systems, machines, and equipment that could present a risk to life or property.

Please know and observe all prohibitions of use applicable to the products.

NEVER USE THE PRODUCTS FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY WITHOUT ENSURING THAT THE

SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS, AND THAT THE OMRON PRODUCT IS PROPERLY RATED AND

INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR SYSTEM.

Disclaimers

CHANGE IN SPECIFICATIONS

Product speciﬁ cations and accessories may be changed at any time based on improvements and other reasons.

It is our practice to change model numbers when published ratings or features are changed, or when signiﬁ cant construction changes are made.

However, some speciﬁ cations of the product may be changed without any notice. When in doubt, special model numbers may be assigned to ﬁ x

or establish key speciﬁ cations for your application on your request. Please consult with your OMRON representative at any time to conﬁ rm actu a l

speciﬁ cations of purchased product.

DIMENSIONS AND WEIGHTS

Dimensions and weights are nominal and are not to be used for manufacturing purposes, even when tolerances are shown.

ERRORS AND OMISSIONS

The information in this catalog has been carefully checked and is believed to be accurate; however, no responsibility is assumed for clerical,

typographical, or proofreading errors, or omissions.

PERFORMANCE DATA

Performance data given in this catalog is provided as a guide for the user in determining suitability and does not constitute a warranty. It may represent

the result of OMRON’s test conditions, and the users must correlate it to actual application requirements. Actual performance is subject to the OMRON

Warranty and Limitations of Liability.

PROGRAMMABLE PRODUCTS

OMRON shall not be responsible for the user's programming of a programmable product, or any consequence thereof.

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