Omron E3T-ST22, E3T-ST11, E3T-ST13, E3T-ST14, E3T-ST23 Datasheet

1E3T

Miniature Square Photoelectric Sensor in plastic housing

E3T

• Precision pinpoint LED

• 3.5 mm thin flat shape or 6.6 mm side

view shape where space is crucial

•IP67

• Pulse synchronisation for high

ambient light immunity

Features

3.5 mm flat model with background supression (BGS) with highest repeatability even for differently coloured
objects.

Application

Object detection through small holes

• The precision pinpoint LED of the through-beam models
provides appropriate sensing distances for very precise and
reliable detection even through smallest slits and gaps with
e.g. 0.5 mm dia.

• The coaxial optics and the small focal lens of the
retro-reflective models allow the detection of small
(dia 2 mm) objects or through small holes (dia 2 mm).

Minimal black/white error Unique light receiving lens shape

for high precision alignment

New mounting technology for reliable background

suppression in 3.5 mm flat housing

E3T-FL1@

White paper Black paper

0

5

10

15

20

25

(mm)

Light receiving lens

Rear Front Side

Flip chip (IC)

Light receiving
element

2 Standard Photoelectric Sensors

Application

Ordering Information

Sensors

E3T-SL limited-reflective models (side view)

• Minimum detection object: 0.15 mm dia.

• Limited-reflective optics reduce the influence of changing
backgrounds and surrounding metal for enhanced detec­tion stability.

E3T-FD Diffuse-reflective Models (Flat)

• Minimum detection object: 0.15 mm dia.

• 3.5 mm thickness for installations with limited space.

Sensing

method

Appearance

Connection method

Sensing

distance

Opera-

tion

mode

Order code

NPN output PNP output

Through-

beam

Side-view

--

2m

*1

*1. For pre-wired models with robotic cables add '-R' to the order code (example: E3T-FT21R 2M). For details on robotic cables refer to page 12.

*2

*2. For pre-wired models with M8 connector plug or e-CON connector contact your OMRON representative

Light-ON E3T-ST11 2M E3T-ST13 2M

Dark-ON E3T-ST12 2M E3T-ST14 2M

Light-ON E3T-ST21 2M E3T-ST23 2M

Dark-ON E3T-ST22 2M E3T-ST24 2M

Flat

Light-ON E3T-FT11 2M E3T-FT13 2M

Dark-ON E3T-FT12 2M E3T-FT14 2M

Light-ON E3T-FT21 2M E3T-FT23 2M

Dark-ON E3T-FT22 2M E3T-FT24 2M

Retro-

reflective

Side-view

*3

*3. Values in parentheses indicate the minimum required sensing distance between the sensor and the reflector. For applications with shorter distances between the

sensor and the reflector contact your OMRON representative.

Light-ON E3T-SR41-C 2M*4E3T-SR43-C 2M

*4

*4. Order reflector separately. For ordering models with included reflectors contact your OMRON representative.

Dark-ON E3T-SR42-C 2M*4E3T-SR44-C 2M

*4

Diffuse-

reflective

Flat

Light-ON E3T-FD11 2M E3T-FD13 2M

Dark-ON E3T-FD12 2M E3T-FD14 2M

Limited-

reflective

Side-view

Light-ON E3T-SL11 2M E3T-SL13 2M

Dark-ON E3T-SL12 2M E3T-SL14 2M

Light-ON E3T-SL21 2M E3T-SL23 2M

Dark-ON E3T-SL22 2M E3T-SL24 2M

Diffuse

reflective

(background

suppression)

Flat

Light-ON E3T-FL11 2M E3T-FL13 2M

Dark-ON E3T-FL12 2M E3T-FL14 2M

Light-ON E3T-FL21 2M E3T-FL23 2M

Dark-ON E3T-FL22 2M E3T-FL24 2M

Red light

1 m

(Sensitivity Adjustment
Unit can be used.)

300 mm

500mm

300 mm

200 mm
[30 mm]

100 mm
[10 mm]

5 to 30 mm

5 to 15 mm

5 to 30 mm

1 to 15 mm

1 to 30 mm

3E3T

Accessories (Order Separately)

Slits

Reflectors

Sensitivity Adjustment Unit

Mounting Brackets

Note: When using Through-beam models, order one bracket for the Receiver and one for the Emitter.

Slit width

Sensing distance

(typical)

Minimum detect-

able object (typical)

Order code Quantity Remarks

0.5 mm dia. 100 mm 0.5 mm dia.
E39-S63

2
(one each for
emitter and
receiver)

Plug-in type round slits
Can be used with E3T-ST1@
Through-beam models.

1 mm dia. 300 mm 1 mm dia.

0.5 mm dia. 50 mm 0.5 mm dia.
E39-S64

Plug-in type round slits
Can be used with E3T-FT1@
Through-beam models.

1 mm dia. 100 mm 1 mm dia.

Shape Type Sensing distance

*1

*1. Values in parentheses indicate the minimum required distance between the Sensor and Reflector.

Minimum detectable

object (typical)

Order code Remarks

Small
reflector

200 mm (30 mm) 2 mm dia E39-R4

100 mm (10 mm) E39-R37-CA Reflectors E39-_-CA are optimised

for operation with E3T-SR4. Please
verify the performance when using
other reflectors and reflective tapes.

Tape
reflector

100 mm (10 mm) E39-RS1-CA

100 mm (10 mm) E39-RS2-CA

100 mm (10 mm) E39-RS3-CA

Appearance Sensing distance (typical) Model Quantity Remarks

300 to 800 mm E39-E10 1

Can be used with the E3T-ST1@
Though-beam Models.

Appearance Model Quantity Remarks

E39-L116

1

Can be used with the E3T-S@@@

Side-view Models.

(A securing nut plate is provided with the

Mounting Bracket.)

E39-L117

E39-L118

E39-L119

Can be used with the E3T-F@@@

Flat Models.

E39-L120

4 Standard Photoelectric Sensors

Rating and Specifications

Item

Through-beam Retro-reflective Diffuse-reflective

Side-view Flat Side-view Flat

NPN PNP NPN PNP NPN PNP NPN PNP

E3T-ST11
E3T-ST12
E3T-ST21
E3T-ST22

E3T-ST13
E3T-ST14
E3T-ST23
E3T-ST24

E3T-FT11
E3T-FT12
E3T-FT21
E3T-FT22

E3T-FT13
E3T-FT14
E3T-FT23
E3T-FT24

E3T-SR41
E3T-SR42

E3T-SR43
E3T-SR44

E3T-FD11
E3T-FD12

E3T-FD13
E3T-FD14

Sensing distance E3T-ST1@

E3T-ST2@

1 m
300 mm

E3T-FT1@
E3T-FT2@

500 mm
300 mm

200 mm (30 mm)
with E39-R4

*1

100 mm (10 mm)
with E39-R37-CA

*1

*1. Values in parentheses indicate the minimum required distance between Sensor and Reflector.

5 to 30 mm
(50 x 50 mm white paper)

Standard sensing object Opaque, 2 mm dia. min. Opaque, 1.3 mm dia. min. Opaque, 27 mm dia. min. ---

Minimum detectable
object (typical)

2 mm dia opaque object 1.3 mm dia opaque object 2 mm dia. (sensing dis-

tance of 100 mm)

0.15 mm dia. (sensing
distance of 10 mm)

Hysteresis (white paper) --- 6 mm max.

Black/white error ---

Directional angle Emitter: 2° to 20°

Receiver: 2° to 70°

Emitter: 3° to 25°
Receiver: 3° min.

2° to 20° ---

Light source
(wavelength)

Red LED (“Pin-point” LED) λ = 650 nm

Power supply voltage 12 to 24 VDC ±10%, ripple (p-p) 10% max.

Current consumption Emitter: 10 mA max.

Receiver: 20 mA max.

20 mA max.

Control output Load power supply voltage: 26.4 VDC max.

Load current: 50 mA max.
(residual voltage: 2 V max. for load current of 10 to 50 mA, 1 V max. for load current of less than 10 mA)
Open collector output
Light ON: E3T-@@@1 and E3T-@@@3
Dark ON: E3T-@@@2 and E3T-@@@4

Protection circuits Power supply and control output reverse polarity

protection
Output short-circuit protection

Power supply and control
output reverse polarity
protection
Output short-circuit pro­tection, Mutual interrefer­ence prevention, surge
suppressor

Power supply and control
output reverse polarity
protection
Output short-circuit pro­tection, Mutual interrefer­ence prevention

Response time Operate or reset: 1 ms max.

Ambient illumination Incandescent lamp: 5,000 lx max.

Sunlight: 10,000 lx max.

Ambient temperature
range

Operating: -25 to 55 °C
Storage: -40 to 70 °C (with no icing or condensation)

Ambient humidity range Operating: 35% to 85%

Storage: 35% to 95% (with no condensation)

Insulation resistance 20 MΩ min. at 500 VDC

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

Vibration resistance Destruction: 10 to 2,000 Hz, 1.5 mm double amplitude or 300 m/s2 for 0.5 hrs each in X, Y, and Z directions

Shock resistance Destruction: 1,000 m/s2 3 times each in X, Y, and Z directions

Degree of protection IP67 (IEC60529)

Connection method Pre-wired (standard length: 2 m)

Weight Approx. 40 g Approx. 20 g

Materials Case PBT (polybutylene terephthalate)

Display
window

Denatured polyarylate

Lens Denatured polyarylate Methacrylic resin Denatured polyarylate

Accessories Instruction manual, Installation screws (Side-view Models: M2 x 14, Flat Models: M2 x 8), Nuts,

Spring washers, Flat washers

5E3T

Item

Limited-reflective Diffuse-reflective (background suppression)

Side-view Flat

NPN PNP NPN PNP NPN PNP NPN PNP

E3T-SL11
E3T-SL12

E3T-SL13
E3T-SL14

E3T-SL21
E3T-SL22

E3T-SL23
E3T-SL24

E3T-FL11
E3T-FL12

E3T-FL13
E3T-FL14

E3T-FL21
E3T-FL22

E3T-FL23
E3T-FL24

Sensing distance 5 to 15 mm

(50 x 50 mm white paper)

5 to 30 mm
(50 x 50 mm white paper)

1 to 15 mm
(50 x 50 mm white paper)

1 to 30 mm
(50 x 50 mm white paper)

Standard sensing object ---

Minimum detectable
object (typical)

0.15 mm dia. (sensing distance of 10 mm) 0.15 mm dia non-glossy object
(sensing distance of 10 mm)

Hysteresis
(white paper)

2 mm max. 6 mm max. 0.5 mm max. 2 mm max.

Black/white error --- 15% max.

Directional angle ---

Light source
(wavelength)

Red LED (“Pin-point” LED) λ = 650 nm

Power supply voltage 12 to 24 VDC ±10%, ripple (p-p) 10% max.

Current consumption 20 mA max.

Control output Load power supply voltage: 26.4 VDC max.

Load current: 50 mA max. (residual voltage: 2 V max. for load current of 10 to 50 mA, 1 V max. for load current
of less than 10 mA)
Open-collector output
Light ON: E3T-@@@1 and E3T-@@@3
Dark ON: E3T-@@@2 and E3T-@@@4

Protection circuits Power supply and control output reverse polarity protection

Output short-circuit protection, Mutual interference prevention

Response time Operate or reset: 1 ms max.

Ambient illumination Incandescent lamp: 5,000 lx max.

Sunlight: 10,000 lx max.

Ambient temperature
range

Operating: -25 to 55 °C
Storage: -40 to 70 °C (with no icing or condensation)

Ambient humidity range Operating: 35% to 85%

Storage: 35% to 95% (with no condensation)

Insulation resistance 20 MΩ min. at 500 VDC

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

Vibration resistance Destruction: 10 to 2,000 Hz, 1.5 mm double amplitude or 300 m/s2 for 0.5 hrs each in X, Y, and Z directions

Shock resistance Destruction: 1,000 m/s2 3 times each in X, Y, and Z directions

Degree of protection IP67 (IEC60529)

Connection method Pre-wired (standard length: 2 m)

Weight Approx. 20 g

Materials Case PBT (polybutylene terephthalate)

Display
window

Denatured polyarylate

Lens Denatured polyarylate

Accessories Instruction manual, Installation screws (Side-view Models: M2 x 14, Flat Models: M2 x 8), Nuts,

Spring washers, Flat washers

6 Standard Photoelectric Sensors

Engineering Data (Typical)

Parallel Operating Range

Through-beam

E3T-ST1@ + E39-S63 Slit
(Order Separately)

E3T-ST1@ + E39-S63 Slit
(Order Separately)

(Enlarged graph)

E3T-ST2@

E3T-FT1@ + E39-S64 Slit
(Order Separately)

E3T-FT1@ + E39-S64 Slit
(Order Separately)

(Enlarged graph)

E3T-FT2@

Retro-reflective

E3T-SR4@

200

150

100

50

0

50

100

150

200

0.5-dia Slit

Distance X (m)

1-dia Slit

0.4 0.8 1.2 1.6 1.2

Distance Y (mm)

Without Slit

Y

X

80

60

40

20

0

20

40

60

80

40 80 120 160 200

Distance Y (mm)

1-dia Slit

0.5-dia Slit

Distance X (mm)

Y

X

Y

X

20

15

10

5

0

5

10

15

20

25

25

200 400 800600

Without Slit

Distance X (mm)

Distance Y (mm)

1-dia Slit

0.5-dia Slit

200

150

100

50

0

50

100

150

200

0.4 0.6 0.8 1 1.2 1.40.2

1-dia Slit

Without Slit

Distance X (m)

Y

X

Distance Y (mm)

0.5-dia Slit

80

60

40

20

0

20

40

60

80

40 80 120 160 200

Distance Y (mm)

0.5-dia Slit

1-dia Slit

Distance X (mm)

Y

X

Y

X

60

40

20

0

20

40

60

80

80

200 400 600

800

1-dia Slit

Distance X
(mm)

Distance Y (mm)

Without Slit

0.5-dia Slit

Distance X (mm)

40

30

20

10

0

−10

−20

−30

−40

Distance Y (mm)

100 4000 300200

Y

X

E3T- SR4@+E39-R37-CA

E3T- SR4@+E39-R4

7E3T

Operating Range

Inclination Characteristics

Diffuse-reflective Limited-reflective

E3T-FD1@ E3T-SL1@ E3T-SL2@

Diffuse-reflective (background suppression)

E3T-FL1@ E3T-FL2@

Limited-reflective

E3T-SL1@ (Top to Bottom) E3T-SL1@ (Right to Left) E3T-SL2@ (Top to Bottom)

Sensing object:
50 x 50 mm white paper

3

2

1

0

1

2

3

4

4

10 20 30 40

Y

X

Distance Y (mm)

Distance X
(mm)

15

10

5

0

5

10

15

51015202530

Y

X

Distance Y (mm)

Sensing object:
50 x 50 mm white paper

Distance X
(mm)

3

2

1

0

1

2

3

4

4

10 20 30 40

Distance Y (mm)

Sensing object:
50 x 50 mm white paper

Distance X
(mm)

Y

X

4

3

2

1

0

1

2

3

4

5

5

26841012

Sensing distance X (mm)

Distance Y (mm)

14 16

8

6

4

2

0

2

4

6

8

10

10

5152010 25 30 35

Sensing distance X (mm)

Distance Y (mm)

Glass

250

200

150

100

50

0

50

300

100

6020 400204060

Angle (°)

Stainless steel

Angle
of inclination

+

Rate of ch

ange (%)

40

20

0

20

40

60

80

50

100

6020 400204060

+

Glass

Stainless steel

Angle of
inclination

Angle (°)

Rate of ch

ange (%)

250

200

150

100

50

0

50

300

100

6020 400204060

+

Glass

Stainless steel

Angle of
inclination

Angle (°)

Rate of change (%)

8 Standard Photoelectric Sensors

Exess Gain vs. Set Distance

Diffuse-reflective (background suppression)

E3T-SL2@ (Right to Left) E3T-FL1@ (Top to Bottom) E3T-FL1@ (Right to Left)

E3T-FL2@ (Top to Bottom) E3T-FL2@ (Right to Left)

Through-beam

E3T-ST1@ E3T-FT1@ E3T-ST2@

40

20

0

20

40

60

80

60

100

6020 400204060

+

Glass

Stainless steel

Angle of
inclination

Rate of ch

ange (%)

Angle of inclination (°

)

15

10

5

0

5

10

15

20

20

402010 30020 103040

Rate of change in sensing distance (%)

Angle of
inclination

White
paper

Center
line

+

Angle of inclination (°)

15

10

5

0

5

10

15

20

20

402010 30020 103040

+

Rate of change in sensing distance (%)

Angle of
inclination

White
paper

Center
line

Angle of inclination (°)

15

10

5

0

5

10

15

20

20

402010 30020 103040

+

Rate of change in sensing distance (%)

Angle of
inclination

White
paper

Center
line

Angle of inclination (°)

15

10

5

0

5

10

15

20

20

402010 30020 103040

+

Rate of change in sensing distance (%)

Angle of
inclination

White
paper

Center
line

Angle of inclination (°)

100

50

30

10

5

3

1

0.5

0.3

0.1
40003000200010000

Excess gain ratio

Operating
level

Set distance (mm)

100

50

30

10

5

3

1

0.5

0.3

0.1
0 400 800 1200 1600 2000

Excess gain ratio

Operating
level

Set distance (mm)

14

12

10

8

6

4

2

0

1

12009006003000

Operating
level

Set distance (mm)

Excess gain ratio

9E3T

Sensing Object Size vs. Sensing Distance

Retro-reflective

E3T-FT2@ E3T-SR4@

Diffuse-reflective

Limited-reflective

E3T-FD1@ E3T-SL1@ E3T-SL2@

E3T-SL1@ E3T-FD1@, E3T-SL2@

14

12

10

8

6

4

2

0

2000150010005000

1

Excess gain ratio

Operating
level

Set distance (mm

)

100

50

30

10

5

3

1

0.5

0.3

0.1

Excess gain ratio (times)

3002001000

Distance (mm)

Operating

level

E3T- SR4@+E39-R37-CA

E3T- SR4@+E39-R4

100

50

30

10

5

3

1

0.5

0.3

0.1
0 10 20 30 40

Excess gain ratio

Operating
level

Black paper

White paper

Set distance (mm

)

0 5 10 15 20

1000

500
300

100

50
30

10

5
3

1

0.5

0.3

0.1

Excess gain ratio

Operating
level

Black paper

White paper

Set distance (mm)

100

50

30

10

5

3

1

0.5

0.3

0.1
0 10 20 30 40

Excess gain ratio

Operating
level

White paper

Black paper

Set distance

(mm)

2.0

1.6

1.2

0.8

0.4

0

5 10 15 20

Min. sensing object dia. (mm)

0 5 10 15 20 25 30

10

8

6

4

2

E3T-FD1@

E3T-SL2@

Min. sensing object dia. (mm

)

Sensing object: Pin-gauge, stainless steel

Set distance (mm)

10 Standard Photoelectric Sensors

Sensing Distance vs. Material

Sensing Distance Characteristics of Sensitivity Adjustment Unit
(when Completing Optical Axial Adjustment)

Limited-reflective

Diffuse-reflective

E3T-SL1@ E3T-SL2@ E3T-FD1@

Diffuse-reflective (background suppression)

E3T-FL1@ E3T-FL2@

E3T-ST1@ + E39-E10 Sensitivity Adjustment
Unit (Order Serparately)

25

20

15

10

5

0

Material

Sensing distance (mm)

White paper

Stainless

Plywoodood

Cardboard

Glass sheet

Black rubber

Black paper

41,439

50

40

30

20

10

0

Material

Sensing distance (mm)

White paper

Stainless

Plywood

Cardboard

Glass sheet

Black rubber

Black paper

70

60

50

40

30

20

10

0

Material

Sensing distance (mm)

White paper

Stainless

Plywood

Cardboard

Glass sheet

Black rubber

Black paper

20

15

10

5

0

Material

Sensing distance (mm)

White paper

Stainless

Plywood

Cardboard

Glass sheet

Black rubber

Black paper

40

30

20

10

0

Material

Sensing distance (mm)

White paper

Stainless

Plywood

Cardboard

Glass sheet

Black rubber

Black paper

Min. 1/3 1/2 2/3 Max.

Adjustment dial angle

3.5

3.0

2.5

2.0

1.5

1.0

0.5

0

Measurement pattern 2

Measurement pattern 1

Sensing distance (m)

11E3T

I/O Circuit Diagrams

NPN Output

PNP Output

Model

Operation

mode

Timing charts Output circuit

E3T-@@@1 Light-ON

E3T-@@@2Dark-ON

Model

Operation

mode

Timing charts Output circuit

E3T-@@@3 Light-ON

E3T-@@@4Dark-ON

Operation
indicator
(orange)

Light incident

Light interrupted

ON

OFF

Output
transistor

ON

OFF

Load
(e.g., relay)

Operate

Reset

(Between brown and black)

4

3

1

50 mA
max.

0 V

Z

D

12 to 24 VDC

Through-beam Receivers,
Retroreflective and Reflective Models

Through-beam Emitters

Brown

Black

(Control

output)

Blue

Operation
indicator
(Orange)

Stability
indicator
(Green)

Load

(Relay)

Photo­electric
Sensor
Main
Circuit

Brown

1

3

Blue

12 to 24 VDC

Photo­electric
Sensor
Main
Circuit

ON

OFF

ON

OFF

Operate

Reset

(Between brown and black)

Operation
indicator
(orange)

Light incident

Light interrupted

Output
transistor

Load
(e.g., relay)

Operation
indicator
(orange)

Light incident

Light interrupted

ON

OFF

Output
transistor

ON

OFF

Load
(e.g., relay)

Operate

Reset

(Between blue and black leads)

4

1

3

50 mA
max.

0 V

Z

D

12 to 24 VDC

Brown

Black

(Control

output)

Blue

Load

(Relay)

Photo­electric
Sensor
Main
Circuit

Operation
indicator
(Orange)

Stability
indicator
(Green)

Through-beam Receivers,
Retroreflective and Reflective Models

1

3

Through-beam Emitters

Brown

Blue

12 to 24 VDC

Photo­electric
Sensor
Main
Circuit

Operation
indicator
(orange)

Light incident

Light interrupted

ON

OFF

Output
transistor

ON

OFF

Load
(e.g., relay)

Operate

Reset

(Between blue and black leads)

12 Standard Photoelectric Sensors

Safety Precautions

This product is not designed or rated for ensuring

safety of persons. Do not use it for such purpose.

Do not apply AC power to the E3T, otherwise the

E3T may rupture.

Do not use the product in atmospheres or environment that

exceed product ratings.

Wiring

The maximum power supply voltage is 24 VDC +10%. Before

turning the power ON, make sure that the power supply volt-

age is not more than maximum voltage.

Load short-circuit protection

The E3T incorporates a load short-circuit protection function.

If the load short-circuits, the output of the E3T will be turned

OFF. Then, recheck the wiring and turn on the E3T again to

reset the load short-circuit protection function. The load short-

circuit protection function will work if there is a current flow

that is 2.4 times larger than the rated load current. When us-

ing an inductance load, be sure that the inrush current will not

exceed 2.4 times larger than the rated current.

Mounting

When mounting the Sensor, never strike it with a heavy ob-

ject, such as a hammer. Doing so may reduce its watertight

properties. Use M2 screws and flat or spring washers to se-

cure the Sensor. (Tightening torque: 0.15 N·m max.)

Mounting the Sensor on Moving Parts

Cable Bending Rupture Test
(Tough Cable Breaking Test)

The cable is repeatedly bent with power supplied to check the

number of bends until the current is turned OFF

.

L

Adjusting

Indicators

• The following graphs indicate the status of each operating
level.

• Be sure to use the E3T within the stable operating range.

Use of E39-E10 Sensitivity Adjustment Unit

(Dark-ON: E3T-ST12)

1. Mount the Unit on the Receiver.

2. Set the adjuster of the Sensitivity Adjustment Unit to Max.

(Before shipping: Max.)

3. After mounting on the Sensor, adjust the optical axis and

secure the Sensor.

4. Place a workpiece between the Emitter and Receiver and

gradually turn the adjuster counterclockwise toward the
Min. side. Stop turning the adjuster when the operation in­dicator and stability indicator (green) turn ON.

5. Remove the workpiece and confirm that the operation in-

dicator is OFF and the stability indicator (green) is ON.
This completes the adjustment.

Note: If the light attenuation rate due to a workpiece is 40% or less, the stability

indicator will not turn ON whether or not light is received. When the vari­ation of light is small such as when sensing semi-transparent workpiec­es, carefully perform preliminary testing.

Others

Do not install the E3T in the following locations.

• Locations subject to excessive dust or dirt

• Locations subject to direct sunlight

• Locations subject to corrosive gas

• Locations subject to contact with organic solvents

• Locations subject to vibration and shock

• Locations subject to contact with water, oil, or chemicals

• Locations subject to high humidities that might result in

condensation

! Warning

Precautions for Correct Use

Test

Specimen Standard cable

2.4 mm dia. (7/

0.127 mm dia.),
3 conductors

Robotics cable

2.4 mm (20/

0.08 mm dia.),

Test 3 conductors

Con-

tents/

condi-

tions

Bending
angle (θ)

90° each to the left and right

Bending speed 50 times/min
Load 200 g
Operation per

bend

Once in 1 to 3 in the diagram

Curvature radi­us of support
point (R)

5 mm

Result Approx. 14,000

times

Approx. 400,000
times

Weight

R

A

C

B

Consider models that use break resistant ca-

bles (e.g., Robotics Cables) if the Sensor

will be mounted on a moving part, such

as a robot hand. The flexing resistance of

Robotics Cable at approximately 400 thou-

sand times is far superior to that of standard

cable at approximately 14 thousand times.

Stable
operation
range*

Stable
operation
range*

Unstable
operation
range*

Operating
level x 1.2

Operating
level x 0.8

Operating
level

Light

ON

ON

ON

ON

OFF

OFF

OFF

Stability
indicator
(green)

Operation indicator (orange)

E3T-@@@1
E3T-@@@3

E3T-@@@2
E3T-@@@4

*If the E3T fs operating level is set to the stable operation range, the E3T
will be in most reliable operation without being influenced by temperature
change, voltage fluctuation, dust, or setting change. If the operating level
cannot be set to the stable operation range, pay attention to environmental
changes while operating the E3T.

Indicator

Adjuster

(At Min)

(At Center)

(At Max.)

13E3T

Dimensions

Sensors

Two, M2

9

±0.2

Emitter

7

6.6

7.7

R2.5

Two, 2.2 dia.

2.7

9

14.6

18.5

3.8

5.2

4.8

9.5

2.4-dia. vinyl-insulated round cable
with 2 conductors
(Conductor cross section: 0.1 mm²,
Insulator diameter: 0.7 mm),
Standard length: 2 m

2.4-dia. vinyl-insulated round cable
with 3 conductors
(Conductor cross section: 0.1 mm²,
Insulator diameter: 0.7 mm),
Standard length: 2 m

Mounting Holes

Two, M2

±0.2

Receiver

3.1

7

6.6

7.7

R2.5

Two, 2.2 dia.

2.7

9

14.6

18.5

3.8

5.2

4.8

9.5

3.45

Operation
indicator*

Lens (1.3 dia.)

Stability
indicator

Mounting Holes

Through-beam Models
(Side-view)

E3T-ST1@ (Emitter)
E3T-ST2@ (Emitter)

E3T-FT1@ (Emitter)
E3T-FT2@ (Emitter)

E3T-FT1@ (Receiver)
E3T-FT2@ (Receiver)

E3T-ST1@ (Receiver)
E3T-ST2@ (Receiver)

1

15

2

3
4

5.9

15.6

2.4-dia. vinyl-insulated round cable
with 3 conductors
Standard lengths: 0.3 m and 2 m

2.4-dia. vinyl-insulated round cable
with 3 conductors
Standard lengths: 0.3 m and 2 m

e-CON Pre-wired Connector Model
(E3T-ST@@-ECON)

e-CON Pre-wired Connector Model
(E3T-ST@@-ECON)

Terminal

No.

Specifi-

cations
1+V

2 ---

---

3
4

Emitter: E3T-ST@@-L
Receiver: E3T-ST@@-D

1

1

5

2

3
4

5.9

15.6

1+V

2

3

4 Output

8

±0.2

3.5

12

R0.5

R0.5

Two, R0.5

8.6

Two, R0.8

14

15.8
19

1.75

4.4
8

Emitter

Optical axis

Two, 2.2 dia.

Mounting Holes

Two, M2

Through-beam Models (Flat)

1

15

2

3
4

5.9

15.6

1

+V

2

---

3

0 V

4

---

3.5

3.1

12

R0.5

R0.5

Two, R0.5

8.6

2.35

Two, R2

Two, R0.8

14

15.8
19

1.75

4.4
8

8

±0.2

Lens (1.3 dia.)

Two, 2.2 dia.

Stability indicator

Mounting Holes

Operation
indicator

Receiver

Optical axis

1

1

5

2

3
4

5.9

15.6

le

1

+V

2

---

3

0 V

4

Output

Terminal

No.

Specifi­cations

Emitter: E3T-FT@@-L
Receiver: E3T-FT@@-D

Terminal

No.

Specifi­cations

e-CON Pre-wired Connector
(E3T-FT@@-ECON)

Two, M2

Terminal

No.

Specifi­cations

e-CON Pre-wired Connector
(E3T-FT@@-ECON)

2.4-dia. vinyl-insulated round cable
with 2 conductors
(Conductor cross section: 0.1 mm²,
Insulator diameter: 0.7 mm),
Standard length: 2 m

2.4-dia. vinyl-insulated round cable
with 3 conductors
(Conductor cross section: 0.1 mm²,
Insulator diameter: 0.7 mm),
Standard length: 2 m

2.4-dia. vinyl-insulated round cable
with 3 conductors
Standard lengths: 0.3 m and 2 m

2.4-dia. vinyl-insulated round cable
with 3 conductors
Standard lengths: 0.3 m and 2 m

---

0 V

0 V

9

14 Standard Photoelectric Sensors

E3T- SL1@
E3T- SL2@

3.1

12

3.5

1.75

8

±0.2

11.35

2.5

19

20.8
24

4.4

8

2
2

Operation
indicator

Stability indicator

Optical axis

Two, 2.2 dia.

Mounting Holes

Two , M 2

Emitter lens
(1.5 dia.)

Receiver lens
(2.0 dia.)

Diffuse-reflective Models (Flat)

E3T-FD1@

1

1

5

2

3

4

5.9

15.6

7

6.6

24.5

9.2

15

6.5

*2

20.6

3.8

5.2

2.3

2.9

2.5

2.5

*1

6.3

11

15

±0.2

Emitter lens
(4.0 dia.)

Receiver lens
(4.0 dia.)

Operation
indicator

Stability indicator

Optical axis

Two, 2.2 dia.

Mounting Holes

Two , M 2

Limited-reflective Models (Side-view)

1

1

5

2

3

4

5.9

15.6

2.4-dia. vinyl-insulated round cable
with 3 conductors
(Conductor cross section: 0.1 mm²,
Insulator diameter: 0.7 mm),
Standard length: 2 m

2.4-dia. vinyl-insulated round cable
with 3 conductors
Standard lengths: 0.3 m and 2 m

e-CON Pre-wired Connector
(E3T-FD@@-ECON)

1

+V

2

---

3

0 V

4

Output

Ter minal

No.

Specifi­cations

2.4-dia. vinyl-insulated round cable
with 3 conductors
(Conductor cross section: 0.1 mm²,
Insulator diameter: 0.7 mm),
Standard length: 2 m

1

+V

2

---

3

0 V

4

Output

Ter minal

No.

Specifi­cations

2.4-dia. vinyl-insulated round cable
with 3 conductors
Standard lengths: 0.3 m and 2 m

e-CON Pre-wired Connector
(E3T-SL@@-ECON)

2.4-dia. vinyl-insulated round cable with 3 conductors
(Conductor cross section: 0.1 mm

2

(AWG27), Insulator diameter: 0.7 mm),

Standard length: 2 m

Two, M2

7

6.6

24.5

9.2
Two, 2.2 dia.

15

4.5

20.6

3.8

5.2

2.3

2.9

6.3

11

15

±0.2

Operation indicator

Stability indicator

Optical axis lens

(2.0 dia.)

Mounting Holes

Retro-reflective Models (Side-view)

E3T- SR4@

15E3T

Accessories

3.1

12

3.5

1.75

8

±0.2

10.35

2.5

19

20.8
24

4.4

8

3

3

Operation
indicator

Stability indicator

Optical axis

Two, 2.2 dia.

Mounting Holes

Two , M 2

Receiver lens
(2.8 square)

Emitter lens
(1.5 dia.)

1

1

5

2

3

4

5.9

15.6

Diffuse-reflective (background suppression)

E3T-FL1@
E3T-FL2@

2.4-dia. vinyl-insulated round cable
with 3 conductors
(Conductor cross section: 0.1 mm²,
Insulator diameter: 0.7 mm),
Standard length: 2 m

1

+V

2

---

3

0 V

4

Output

Ter minal

No.

Specifi­cations

2.4-dia. vinyl-insulated round cable
with 3 conductors
Standard lengths: 0.3 m and 2 m

e-CON Pre-wired Connector
(E3T-FL@@-ECON)

13.7

9.7

2

4

23

19

Two, 2.2 dia.

1.4

4.9

4

2

Reflector

E39-R4

Reflector

Reflector tapes

E39-R37-CA

Material, reflective surface: acrylic
Rear surface: ABS

10.2

8.7

(1.1)

13.7

13.7

8-R1

18.323 18.3 23

2-R1.55

Mounting
Bracket: t 0.5

Reflective

surface:
acrylic

Two , 3.1 dia.

ReflectorMounting bracket

Reflector: t 0.5
(adhesive tape side)

Material: Mounting plate: stainless steel
(SUS301)
Reflective surface: acrylic

Note: The reflective plate and mounting plate (1) come as a set.

E39-RS1-CA E39-RS2-CA E39-RS3-CA

35

Four, R1

0.5

10

80

Four, R1

70

0.5

Adhesive
tape side

Four, R1

40

35

Adhesive
tape side

0.5

Adhesive
tape side

16 Standard Photoelectric Sensors

Accessories (Order Separately)

Slit for E3T-ST1@ Through-beam Models

E39-S63

Slit for E3T-FT1@ Through-beam Models

E39-S64

Sensitivity Adjustment Unit
(for E3T-ST1@ Through-beam Models)

E39-E10

2.7

2.7

Notch

12.6

9.7

1.0±

0.05 dia.

7.4

0.5±

0.05 dia.

Two, 2.2 dia.

With Slit Attachment With Slit Attachment With Slit Attachment

Note: Align the notch direc-

tion of the Slit when
installing on the Emit­ ter and Receiver.

Material: 0.2 mm
thick stainless steel
(SUS301)

12.3

12

0.5 dia.

1 dia.

(4.1)

Material: 0.1 mm thick stainless steel
(SUS301)

Material: 0.1 mm thick stainless steel (SUS301)

2 dia.

Optical
axis

Adjuster

90°

7.4

4

18.7

9.7

5.8

(10.1)

(15.1)

With Mounting Bracket (Example: E3T-ST11)

7.5

(17.8)

4.1

2-3.4

(Two, R2)

(Two, R2)

(Two, R1.1)

5

1.6

4

11

9.5

2.2

31.2

1.2

2.4

10

90°

R1.5 max.

(Four, R2)

Three, M2

20.5

15

3

9

7

31

24.5

31.2

Two, M2 x 14

9.7

(10.3

)

17.8

6.2

7.7

Mounting Brackets for Side-view Models

E39-L116

Material: 1.2 mm thick stainless
steel (SUS304)

(Two, R1.7)

(Two, R1.2)

17E3T

23

20.5

15

3

9

7

Two, M2 x 14

(10.3)

11.2

7.7

3.1

3.1

1811.5

11.2

3.4

4.5

2-R2(Two, R1.7)

90°

R1 max.

2.4

(23)

15

9

4

9

2-2.2

5

5

10

(11.2)

10.2

16.3

11.2

6.2

(Four, R2)

Three, M2

1.2

With Mounting Bracket (Example: E3T-ST11)

Mounting Brackets for Side-view Models

E39-L117

Material: 1.2 mm thick stainless
steel (SUS304)

Mounting Brackets for Side-view Models

E39-L118

Material: 1.2 mm thick stainless
steel (SUS304)

20.5

15

3

9

7

7.7

90°

11.5

11.5

22.7

5

2.4

2-2.2

4

9

9

15

4.5

(Two, R1.7)

5

3.4
(Four, R2)

(23)

1811.5

23

16.3

13.2

(Four, R2)

Three, M2

3.1

3.1

1.2

90°

(Two, R1.7)

(Two, R1.1)

(Two, R2)

(Two, R1.1)

With Mounting Bracket (Example: E3T-ST11)

Two, M2 x 14

18 Standard Photoelectric Sensors

1216

90°

8

Four, M2 tapped holes

9

7

3.2

2.4

8

2.4

15

10.5

10.6

9 73.5

Two, M2 x 8

1.2

Mounting Brackets for Flat Models

E39-L119

Mounting Brackets for Flat Models

E39-L120

1216

8

13.56

3.2

2.4

2.4

8

14

22.5

4.2

(5.4)

10.6

(6.4)

13.5

1.2

With Mounting Bracket
(Example: E3T-FT11)

Material: 1.2 mm thick stainless
steel (SUS304)

Material: 1.2 mm thick stainless
steel (SUS304)

With Mounting Bracket
(Example: E3T-FT11)

Four, M2 tapped holes

Two, M2 x 8

19E3T

READ AND UNDERSTAND THIS DOCUMENT

Please read and understand this document before using the products.
Please consult your OMRON representative if you have any ques­tions or comments.

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 specified) 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 ORIMPLIED.

LIMITATIONS OF LIABILITY

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 OMRON’S ANALYSIS CONFIRMS THAT THE PROD­UCTS WERE PROPERLY HANDLED, STORED,INSTALLED, AND
MAINTAINED AND NOT SUBJECT TO CONTAMINATION, ABUSE,
MISUSE, OR INAPPROPRIATE MODIFICATION OR REPAIR.

SUITABILITY FOR USE

THE PRODUCTS CONTAINED IN THIS DOCUMENT ARE NOT
SAFETY RATED. THEY ARE NOT DESIGNED OR RATED FOR EN­SURING SAFETY OF PERSONS, AND SHOULD NOT BE RELIED
UPON AS A SAFETY COMPONENT OR PROTECTIVE DEVICE
FOR SUCH PURPOSES. Please refer to separate catalogs for
OMRON's safety rated products.

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
certification documents identifying ratings and limitations of use that
apply to the products. This information by itself is not sufficient 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
document.

• 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.

PERFORMANCE DATA

Performance data given in this document 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.

CHANGE IN SPECIFICATIONS

Product specifications 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 significant construction changes are
made. However, some specifications of the product may be changed
without any notice. When in doubt, special model numbers may be as­signed to fix or establish key specifications for your application on
your request. Please consult withyour OMRON representative at any
time to confirm actual specifications of purchased products.

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 document has been carefully checked and is
believed to be accurate; however, no responsibility is assumed for
clerical, typographical, or proofreading errors, or omissions.

PROGRAMMABLE PRODUCTS

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

COPYRIGHT AND COPY PERMISSION

This document shall not be copied for sales or promotions without
permission.

This document is protected by copyright and is intended solely for use
in conjunction with the product. Please notify us before copying or re­producing this document in any manner, for any other purpose. If
copying or transmitting this document to another,please copy or
transmit it in its entirety.

20 Standard Photoelectric Sensors

In the interest of product improvement, specifications are subject to change without notice.Cat. No. E377-E1-02-X

OMRON EUROPE B.V.

Wegalaan 67-69,
NL-2132 JD, Hoofddorp,
The Netherlands
Phone: [phone]
Fax: [phone]
www.industrial.omron.eu