A. Product Overview

The OMRON E3FA-TN12 2M is an industrial through beam photoelectric sensor from the E3FA series. It uses a separate emitter and receiver arrangement to detect objects when the light path between them is interrupted.

The sensor is designed with:

• Through beam sensing method
• NPN open collector output
• 15 m sensing distance
• Infrared LED light source with 850 nm wavelength
• 10 to 30 VDC power supply
• 2 m pre-wired cable connection
• M18 cylindrical straight plastic housing
• IP67 and IP69K protection rating
• Light ON and Dark ON operation selectable by wiring
• Fast response time of 0.5 ms

The E3FA series is developed for industrial applications requiring stable detection, easy installation and high reliability. The series includes through beam, retro-reflective and diffuse-reflective sensing types for different automation requirements.

B. Working Principle

The OMRON E3FA-TN12 2M works on the principle of photoelectric interruption detection.

1. The emitter sends an infrared light beam toward the receiver.
2. When there is no object between the emitter and receiver, the receiver continuously receives the light signal.
3. When an object enters the sensing area, it blocks the infrared beam.
4. The sensor detects this interruption and changes the NPN output signal.
5. The output signal can be used by PLCs, controllers or automation systems for machine control.

Because the emitter and receiver are separated, through beam sensors provide reliable detection even over longer distances compared with many reflective sensors.

The sensor uses an infrared LED with 850 nm wavelength and provides a 15 m sensing distance for stable object detection.

C. Why It Is Used

The OMRON E3FA-TN12 2M sensor is used because it provides:

1. Long Distance Detection

With a 15 m sensing range, it can detect objects across larger machine areas and conveyor systems.

2. Reliable Object Detection

Through beam technology provides stable detection because sensing depends on beam interruption rather than object colour or surface reflection.

3. High Industrial Durability

The sensor has IP67 and IP69K protection, making it suitable for industrial environments where dust, vibration and cleaning conditions may occur.

4. Fast Machine Response

The 0.5 ms response time allows quick detection for high-speed automation processes.

5. Easy Installation and Maintenance

The E3FA series provides visible indicators and simple adjustment features for easier setup and troubleshooting.

D. Suitable Buyers

The OMRON E3FA-TN12 2M is suitable for:

• Industrial automation system integrators
• Machine builders
• PLC panel manufacturers
• Packaging machine manufacturers
• Conveyor system manufacturers
• Automotive component manufacturers
• Food and beverage machinery manufacturers
• Textile machinery manufacturers
• Logistics automation companies
• OEM automation solution providers
• Maintenance engineers in manufacturing plants

Common applications:

• Conveyor object detection
• Product counting systems
• Packaging line detection
• Position monitoring
• Assembly line automation
• Machine safety interlocking applications where applicable
• Material handling systems

Frequently Asked Questions (FAQ)

1. What is OMRON E3FA-TN12 2M?

OMRON E3FA-TN12 2M is an infrared through beam photoelectric sensor with NPN output and 15 m sensing distance used for industrial object detection.

2. What is the sensing distance of E3FA-TN12 2M?

The sensing distance of OMRON E3FA-TN12 2M is 15 meters.

3. Is OMRON E3FA-TN12 2M an NPN or PNP sensor?

The E3FA-TN12 2M model uses NPN output.

4. What type of light source is used in this sensor?

It uses an infrared LED with 850 nm wavelength.

5. What is the power supply voltage required?

The sensor operates on 10 to 30 VDC supply voltage.

6. Where is OMRON E3FA-TN12 2M used?

It is commonly used in industrial automation, conveyors, packaging machines, production lines and material handling systems.

7. What is the output type of this photoelectric sensor?

It provides NPN open collector output with maximum load current of 100 mA.

8. What is the response time of this sensor?

The response time is 0.5 milliseconds, making it suitable for fast automation applications.

9. What are the competitors of OMRON E3FA-TN12 2M?

Comparable industrial photoelectric sensors are available from Keyence, SICK, Pepperl Fuchs, IFM, Autonics and Banner Engineering.

10. Can this sensor be connected with PLC systems?

Yes, the NPN output can be connected with compatible PLC digital input modules for automation control applications.