E3T - Proximity Sensors OMRON - Free user manual and instructions

Product Type	Miniature photoelectric proximity sensor
Brand	OMRON
Model	E3T
Category	Proximity sensors
Dimensions (flat model)	Thickness 3.5 mm; width 12 mm; height 24 mm (approx.)
Dimensions (side model)	Thickness 6.6 mm; width 15 mm; height 24.5 mm (approx.)
Weight	Approx. 20 g (flat models) to 40 g (through-beam models)
Supply voltage	12 to 24 VDC ±10%, residual ripple 10% max.
Power consumption	Emitter: 10 mA max; Receiver: 20 mA max (through-beam models)
Output type	Open collector NPN or PNP, selectable Light-ON/Dark-ON
Detection distance	From 1 mm to 2 m depending on model and detection method
Light source	Red "Pin-point" LED (wavelength 650 nm)
Protection	IP67 (IEC 60529)
Operating temperature	-25 °C to 55 °C
Housing material	PBT (polybutylene terephthalate)
Connection method	Pre-wired (standard 2 m length) or optional e-CON connector
Main functions	Through-beam, retro-reflective, diffuse, limited reflection, background suppression; detection of very small objects (up to 0.15 mm diameter)
Maintenance and cleaning	Clean lenses with a soft dry cloth; avoid organic solvents
Safety	Do not use for personal safety; respect the maximum voltage of 26.4 VDC; do not apply AC
Spare parts and repairability	Optional accessories: slots, reflectors, mounting brackets, sensitivity adjustment unit; no user-serviceable parts
General information	One-year warranty; refer to the full manual for usage conditions

Frequently Asked Questions - E3T OMRON

What is the supply voltage of the OMRON E3T sensor?

The supply voltage is 12 to 24 VDC ±10%, with a residual ripple of 10% max. Do not apply AC.

How to choose between NPN and PNP outputs?

Models with suffix 1 or 2 are NPN, those with 3 or 4 are PNP. Choose according to your PLC or control logic.

What is the difference between Light-ON and Dark-ON?

Light-ON: the output is active when light is received. Dark-ON: the output is active when light is interrupted. Models with suffix 1 or 3 are Light-ON, 2 or 4 are Dark-ON.

How to adjust sensitivity on through-beam models?

Use the sensitivity adjustment unit E39-E10 (optional). Mount it on the receiver, set the adjuster to maximum, then gradually turn towards minimum until the green indicator lights up when the part is present.

What is the IP protection rating of the sensor?

The sensor complies with IP67 (IEC 60529), meaning it is protected against dust and temporary immersion.

Can very small objects be detected with this sensor?

Yes, limited reflection and diffuse models can detect objects with a minimum diameter of 0.15 mm under optimal conditions.

What accessories are available for mounting?

Mounting brackets (E39-L116 to L120), slots for through-beam models (E39-S63, E39-S64), and reflectors (E39-R4, E39-R37-CA) are available as options.

How to clean the sensor?

Clean the lenses with a soft dry cloth. Avoid organic solvents that could damage the housing.

What are the environmental operating conditions?

Temperature: -25 °C to 55 °C. Humidity: 35% to 85% without condensation. Avoid corrosive atmospheres, excessive vibration, and direct sunlight.

Can the sensor be used for safety applications?

No, this product is not designed for personal safety. It must not be used as a safety component. Consult OMRON products dedicated to safety.

USER MANUAL E3T OMRON

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

Electrical wiring with multiple black components connected to a metallic connector (no visible text or symbols)

Features

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

Minimal black/white error

Unique light receiving lens shape for high precision alignment

Light receiving lens

3D mechanical component diagram showing a black housing and a gray housing with a blue arrow pointing to a component (no text or symbols)

New mounting technology for reliable background suppression in 3.5 mm flat housing

Flip chip (IC) Light receiving element Rear Front Side

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).

3D rendering of a mechanical assembly with a circular component and metal clamping mechanism (no text or symbols visible)

Two black electronic sensor components with connectors, one connected via a blue cable to a connector (no visible text or symbols)

Application

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.

Two black mechanical components with a directional arrow indicating movement or assembly (no text or symbols visible)

E3T-FD Diffuse-reflective Models (Flat)

• Minimum detection object: 0.15 mm dia.
- 3.5 mm thickness for installations with limited space.

Two industrial control devices: a black E3T-FD12 sensor and a white industrial device with a power outlet (no visible text or symbols)

Ordering Information

Sensors

Red light

Sensing method	Appearance		Connection method				Sensing distance		Operation mode	Order code
										NPN output	PNP output
Through-beam		Side-view	-	-	2 m *1	*2		1 m(Sensitivity Adjustment Unit can be used.)	Light-ON	E3T-ST11 2M	E3T-ST13 2M
									Dark-ON	E3T-ST12 2M	E3T-ST14 2M
								300 mm	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						500mm	Light-ON	E3T-SR41-C 2M*4	E3T-SR43-C 2M*4
									Dark-ON	E3T-SR42-C 2M*4	E3T-SR44-C 2M*4
								300 mm
									Light-ON	E3T-FD11 2M	E3T-FD13 2M
Diffuse-reflective		Flat						200 mm[30 mm]100 mm[10 mm]*3
									Dark-ON	E3T-FD12 2M	E3T-FD14 2M
								5 to 30 mm	Light-ON	E3T-SL11 2M	E3T-SL13 2M
									Dark-ON	E3T-SL12 2M	E3T-SL14 2M
Limited-reflective		Side-view						5 to 15 mm	Light-ON	E3T-SL21 2M	E3T-SL23 2M
								5 to 30 mm	Dark-ON	E3T-SL22 2M	E3T-SL24 2M
								1 to 15 mm	Light-ON	E3T-FL11 2M	E3T-FL13 2M
								1 to 30 mm	Dark-ON	E3T-FL12 2M	E3T-FL14 2M
Diffuse-reflective (background suppression)		Flat							Light-ON	E3T-FL21 2M	E3T-FL23 2M
									Dark-ON	E3T-FL22 2M	E3T-FL24 2M

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

*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.

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

Accessories (Order Separately)
Slits

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 slitsCan 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 slitsCan be used with E3T-FT1□Through-beam models.
1 mm dia.	100 mm	1 mm dia.

Reflectors

Shape	Type	Sensing distance*1	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

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

Sensitivity Adjustment Unit

Appearance	Sensing distance (typical)	Model	Quantity	Remarks
	300 to 800 mm	E39-E10	1	Can be used with the E3T-ST1□ Though-beam Models.

Mounting Brackets

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

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

Item		Through-beam				Retro-reflective		Diffuse-reflective
		Side-view		Flat		Side-view		Flat
		NPN	PNP	NPN	PNP	NPN	PNP	NPN	PNP
		E3T-ST11E3T-ST12E3T-ST21E3T-ST22	E3T-ST13E3T-ST14E3T-ST23E3T-ST24	E3T-FT11E3T-FT12E3T-FT21E3T-FT22	E3T-FT13E3T-FT14E3T-FT23E3T-FT24	E3T-SR41E3T-SR42	E3T-SR43E3T-SR44	E3T-FD11E3T-FD12	E3T-FD13E3T-FD14
Sensing distance		E3T-ST1□ 1 mE3T-ST2□ 300 mm		E3T-FT1□ 500 mmE3T-FT2□ 300 mm		200 mm (30 mm)with E39-R4*1100 mm (10 mm)with E39-R37-CA*1		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 detectableobject (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. (sensingdistance 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 outputLight ON: E3T-□□□1 and E3T-□□□3Dark ON: E3T-□□□2 and E3T-□□□4
Protection circuits		Power supply and control output reverse polarityprotectionOutput short-circuit protection				Power supply and controloutput reverse polarityprotectionOutput short-circuit pro-tection, Mutual interrefer-ence prevention, surge suppressor		Power supply and controloutput reverse polarityprotectionOutput short-circuit pro-tection, Mutual interrefer-ence prevention
Response time		Operate or reset: 1 ms max.
Ambient illumination		Incandescent lamp: 5,000 lx max.Sunlight: 10,000 lx max.
Ambient temperaturerange		Operating: -25 to 55 °CStorage: -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

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

Item		Limited-reflective				Diffuse-reflective (background suppression)
		Side-view				Flat
		NPN	PNP	NPN	PNP	NPN	PNP	NPN	PNP
		E3T-SL11E3T-SL12	E3T-SL13E3T-SL14	E3T-SL21E3T-SL22	E3T-SL23E3T-SL24	E3T-FL11E3T-FL12	E3T-FL13E3T-FL14	E3T-FL21E3T-FL22	E3T-FL23E3T-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 outputLight ON: E3T-□□□1 and E3T-□□□3Dark ON: E3T-□□□2 and E3T-□□□4
Protection circuits		Power supply and control output reverse polarity protectionOutput 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 °CStorage: -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

Parallel Operating Range

Through-beam

E3T-ST1□ + E39-S63 Slit

(Order Separately)

E3T-FT1□ + E39-S64 Slit

(Order Separately)

Retro-reflective

E3T-SR4□

E3T-ST1□ + E39-S63 Slit

(Order Separately)(Enlarged graph)

E3T-FT1□ + E39-S64 Slit

(Order Separately)(Enlarged graph)

E3T-ST2□

E3T-FT2□

Operating Range

Diffuse-reflective
E3T-FD1□

Limited-reflective
E3T-SL1□

E3T-SL2□

Diffuse-reflective (background suppression)
E3T-FL1□

E3T-FL2□

Inclination Characteristics

Limited-reflective
E3T-SL1☐ (Top to Bottom)

E3T-SL1□ (Right to Left)

E3T-SL2☐ (Top to Bottom)

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)

Exess Gain vs. Set Distance

Through-beam
E3T-ST1□

E3T-FT1□

E3T-ST2□

Retro-reflective
E3T-FT2□

E3T-SR4□

Diffuse-reflective
E3T-FD1□

Limited-reflective
E3T-SL1□

E3T-SL2□

Sensing Object Size vs. Sensing Distance
E3T-SL1□

E3T-FD1□, E3T-SL2□

Sensing Distance vs. Material

Limited-reflective
E3T-SL1□

E3T-SL2□

Diffuse-reflective
E3T-FD1□

Diffuse-reflective (background suppression)
E3T-FL1□

E3T-FL2□

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

E3T-ST1□ + E39-E10 Sensitivity Adjustment

Unit (Order Serparately)

NPN Output

Model	Operation mode	Timing charts	Output circuit
E3T-□□□1	Light-ON	Light incidentLight interruptedOperation indicator (orange) ONOFFOutput transistor ONOFFLoad (e.g., relay) Operate Reset(Between brown and black)
E3T-□□□2	Dark-ON	Light incidentLight interruptedOperation indicator (orange) ONOFFOutput transistor ONOFFLoad (e.g., relay) Operate Reset(Between brown and black)

PNP Output

Model	Operation mode	Timing charts	Output circuit
E3T-□□□3	Light-ON	Light incidentLight interruptedOperation indicator (orange) ONOFFOutput transistor ONOFFLoad (e.g., relay) Operate Reset(Between blue and black leads)
E3T-□□□4	Dark-ON	Light incidentLight interruptedOperation indicator (orange) ONOFFOutput transistor ONOFFLoad (e.g., relay) Operate Reset(Between blue and black leads)

Warning

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.

Precautions for Correct Use

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 voltage 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 using 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 object, such as a hammer. Doing so may reduce its watertight properties. Use M2 screws and flat or spring washers to secure the Sensor. (Tightening torque: 0.15 N·m max.)

Mounting the Sensor on Moving Parts

Consider models that use break resistant cables (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 thousand times is far superior to that of standard cable at approximately 14 thousand times.

ca- 1 2 3 ou- ard R Weight

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

Test\Specimen		Standard cable2.4 mm dia. (7/0.127 mm dia.),3 conductors	Robotics cable2.4 mm (20/0.08 mm dia.),Test 3 conductors
Contents/conditions	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

Adjusting

Indicators

• The following graphs indicate the status of each operating level.
• Be sure to use the E3T within the stable operating range.

*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.

Use of E39-E10 Sensitivity Adjustment Unit

(Dark-ON: E3T-ST12)

(At Min)

(At Center)

(At Max.)

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 indicator 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

Dimensions

Sensors

Through-beam Models (Side-view)
E3T-ST1□ (Emitter) E3T-ST2□ (Emitter)

Emitter: E3T-ST□□-L Receiver: E3T-ST□□-D 7 6.6

Mou 9.5 R2.5 7.7 Two, 2.2 dia. 3.8 14.6 18.5 2.7 9 4.8 5.2 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

Mounting Holes

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

Terminal No.	Specifications
1	+V
2	---
3	0 V
4	---

E3T-ST1□ (Receiver) E3T-ST2□ (Receiver)

Operation indicator* 7 3.1 Stability indicator 3.45 2 Receiver Lens (1.3 dia.) 6.6

Mount R2.5 7.7 Two, 2.2 dia. 3.8 9 14.6 18.5 2.7 4.8 5.2 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

e-CON Pre-wired Connector Model (E3T-ST□□-ECON) 5.9

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

Terminal No.	Specifications
1	+V
2	---
3	0 V
4	Output

Through-beam Models (Flat)
E3T-FT1□ (Emitter) E3T-FT2□ (Emitter)

Two black electronic components labeled 'ONION 2019 E3T-FT12' with no visible text or symbols on the body itself.

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

E3T-FT1□ (Receiver) E3T-FT2□ (Receiver)

Emitter Optical axis 12 8.6 14 15.8 19 Two, 2.2 dia. 4.4 8 Two, R0.8

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

Operation indicator Receiver Optical axis Lens (1.3 dia.) Two, 2.2 dia. 12 3.1 4.4 8 Stability indicator Two, R0.5 2.35 8.6 14 15.8 19 Two, R0.8

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

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

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

Terminal No.	Specifications
1	+V
2	---
3	0 V
4	---

Mounting Holes

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

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

Terminal No.	Specifications
1	+V
2	---
3	0 V
4	Output

Retro-reflective Models (Side-view)
E3T-SR4□

Operation indicator 7 2.3 Stability indicator Optical axis lens (2.0 dia.) 2.9 6.6

9.2 Two, 2.2 dia. 3.8 4.5 15 20.6 24.5 6.3 5.2 2.4-dia. vinyl-insulated ro (Conductor cross section Standard length: 2 m

Mounting Holes

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

Diffuse-reflective Models (Flat)
E3T-FD1□

Operation indicator 3.1 Stability indicator Emitter lens (1.5 dia.) Optical axis Receiver lens (2.0 dia.) Two, 2.2 dia. 8 4.4 12 2.5 2 2 19 20.8 24 11.35

Mounting Holes

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

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

Terminal No.	Specifications
1	+V
2	---
3	0 V
4	Output

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

Limited-reflective Models (Side-view)
E3T-SL1□
E3T-SL2□

Operation indicator 2.3 Stability indicator 2.9 Emitter lens (4.0 dia.) 2.5 Optical axis Receiver lens (4.0 dia.) 2.5" 6.6

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

11 9.2 Two, 2.2 dia. 6.5² 3.8 15 20.6 24.5 6.3 5.2

Mounting Holes

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

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

Terminal No.	Specifications
1	+V
2	---
3	0 V
4	Output

Diffuse-reflective (background suppression)
E3T-FL1□
E3T-FL2□

Operation indicator 3.1 Stability indicator 2.5 Receiver lens (2.8 square) Optical axis 3 3 10.35 19 20.8 24 Emitter lens (1.5 dia.) Two, 2.2 dia. 4.4 8

Mounting Holes

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

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

Terminal No.	Specifications
1	+V
2	---
3	0 V
4	Output

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

Accessories

Reflector

E39-R4

Material, reflective surface: acrylic Rear surface: ABS

13.7 4 2 9.7 23 19 2 4 4.9 1.4 Two, 2.2 dia.

Reflector

E39-R37-CA

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

Mounting bracket 13.7 8.7 23 18.3 10.2 Two, 3.1 dia. Reflective surface: acrylic 2-R1.55 13.7 8-R1 18.3 23 (1.1) Reflector: t 0.5 (adhesive tape side) Mounting Bracket: t 0.5

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

Reflector tapes

E39-RS1-CA

35 10 0.5 Four, R1 Adhesive tape side

E39-RS2-CA

40 35 0.5 Four, R1 Adhesive tape side

E39-RS3-CA

80 70 0.5 Four, R1 Adhesive tape side

Accessories (Order Separately)

Slit for E3T-ST1□ Through-beam Models E39-S63

Material: 0.2 mm thick stainless steel (SUS301)
Note: Align the notch direction of the Slit when installing on the Emitter and Receiver.

Slit for E3T-FT1□ Through-beam Models E39-S64

With Slit Attachment

Material: 0.1 mm thick stainless steel (SUS301)

Sensitivity Adjustment Unit (for E3T-ST1□ Through-beam Models) E39-E10

With Slit Attachment

90° 7.4 Optical axis 2 dia. Adjuster 5.8 (10.1) 4 (15.1) 18.7 9.7

Material: 0.1 mm thick stainless steel (SUS301)

Mounting Brackets for Side-view Models

E39-L116

Close-up of a metallic mechanical bracket with mounting holes and a black vertical rod (no visible text or symbols)

Material: 1.2 mm thick stainless steel (SUS304)

R1.5 max. 90° 1.2

(Two, R1.7) (17.8) 7.5 4.1 2-3.4 1.6 (Two, R2)

(Two, R2) 5 4 11 31.2 9.5 (2.2) (2.2) (Two, R1.1) (Two, R1.2) 2.4 10

(10.3) 9.7 6.2 17.8 -7.7

With Mounting Bracket (Example: E3T-ST11)

(Four, R2) Three, M2 3 9 20.5 15 7

Two, M2 x 14 31 31.2 24.5

Mounting Brackets for Side-view Models E39-L117

Material: 1.2 mm thick stainless steel (SUS304)

(Two, R1.7) 11.2 2-R2 3.1 11.5 18 3.4 4.5 3.1 (Two, R1.7)

(Two, R2) 2.4 4 + - (23) 15 9 9 5 5 10 (11.2) 2-2.2 (Two, R1.1)

With Mounting Bracket (Example: E3T-ST11)

(Four, R2) Three, M2 3 9 20.5 15 7

Two, M2 x 10.2 23

11.2 16.3

Mounting Brackets for Side-view Models E39-L118

Material: 1.2 mm thick stainless steel (SUS304)

11.5 11.5 90° 90° 22.7 1.2

5 2.4 4.5 (20, R1.7) 3.1 9 15 9 2-2.2 5 (20, R1.1) 3.4 (40, R2) 11.5 18 (23)

With Mounting Bracket (Example: E3T-ST11)

(Four, R2) Three, M2 3 9 20.5 15 7

Two, M2 x 14 16.3

13.2 23

Mounting Brackets for Flat Models
E39-L119

With Mounting Bracket
(Example: E3T-FT11)

Mounting Brackets for Flat Models
E39-L120

With Mounting Bracket
(Example: E3T-FT11)

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 OR IMPLIED.

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 with your 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.

Cat. No. E377-E1-02-X

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

OMRON EUROPE B.V.

Wegalaan 67-69,