In most procurement cycles, E3FA-TN21 is considered with Omron Photoelectric Sensor, E3Z D61 2M and Omron Sensors, giving decision-makers confidence that theyβve chosen the most dependable component.
Omron E3FA-TN21 Photoelectric Sensor
The Omron E3FA-TN21 Photoelectric Sensor features a Through-beam design with NPN output, M12 connector, and a precise 20 m sensing distance using a red LED light source. Operating on a 10β30 VDC power supply, it belongs to the Omron industrial automation range under the Omron Photoelectric Sensors category and the Omron E3FA Series. This model includes Emitter (E3FA-TN21-L) and Receiver (E3FA-TN21-D) units in a durable plastic housing, supporting Light-ON/Dark-ON selectable operation, 0.5 ms response time, and stable industrial detection performance.
| Brand | Omron |
| Product Type | Photoelectric Sensor |
| Model Number | E3FA-TN21 |
Omron E3FA-TN21 Photoelectric Sensor β Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Through-beam |
| Sensing Distance | 20 m |
| Standard Sensing Object | Opaque: 7 mm dia.min. |
| Light Source | Red LED (624 nm) |
| Power Supply Voltage | 10 to 30 VDC (include voltage ripple of 10%(p-p) max.) |
| Output configuration | NPN |
| Connection Method | M12 Connector |
| Current Consumption | 40 mA max. |
| Control Output | Load current: 100 mA max. (Residual voltage: 3 V max.), Load power supply voltage: 30 VDC max. |
| Operation Mode | Light-ON/Dark-ON selectable by wiring |
| Response Time | 0.5 ms |
| Sensitivity Adjustment | One-turn adjuster |
| Indicators | Power indicator (green) |
| Ambient Illumination | Incandescent lamp: 3,000 lx max./ Sunlight: 10,000 lx max. |
| Ambient Temperature Range | Operating: -25 to 55Β°C/ Storage: -40 to 70Β°C (with no icing or condensation) |
| Ambient Humidity Range | Operating: 35 to 85%/ Storage: 35 to 95% (with no condensation) |
| Insulation Resistance | 20 MΞ© min. at 500 VDC |
| Dielectric Strength | 1,000 VAC at 50/60 Hz for 1 min. between current-carrying parts and case |
| Vibration Resistance | Destruction: 10 to 55 Hz, 1.5 mm double amplitude for 2 hours each in X, Y and Z directions |
| Shock Resistance | Destruction: 500 m/s2 3 times each in X, Y and Z directions |
| Protection Circuits | Power supply reverse polarity protection, Output short-circuit protection, and Output reverse polarity protection |
| Degree of Protection | IEC: IP67, DIN 40050-9: IP69K |
| Material | ABS, PMMA, POM, POM |
| Weight | Approx. 30 g/ Approx. 10 g, respectively |
The Omron E3FA-TN21 Photoelectric Sensor is a through-beam type model from the Omron E3FA Series, designed for reliable object detection in industrial automation. It operates using a red LED light source with a 20 m sensing distance and supports a 10 to 30 VDC power supply. The unit features a NPN open collector output and uses an M12 connector for easy installation. Its durable plastic housing, IP67/IP69K protection, and 0.5 ms response time ensure stable performance even in harsh factory conditions.
Widely applied in automated machinery and production lines, this Omron Photoelectric Sensor offers dependable sensing for packaging, assembly, and conveyor systems. It maintains accurate detection of moving products without contact, improving safety and reducing mechanical wear. The quick response time allows synchronization with fast-moving conveyor operations, while the compact cylindrical housing ensures easy mounting in tight industrial setups. This reliability makes it ideal for continuous industrial automation processes.
The Omron E3FA-TN21 Photoelectric Sensor provides stable through-beam detection for precise sensing applications. For installations needing a pre-wired cable connection, the Omron E3FA-TN11 2M Photoelectric Sensor offers a 2 m pre-wired version with similar specifications. Users requiring a metal-bodied design with enhanced mechanical strength can select the Omron E3FB-TN21 Photoelectric Sensor, which shares the same sensing distance and power range but comes in a stainless-steel housing. Alternatively, for diffuse-reflective detection instead of through-beam operation, the Omron E3FA-DN21 Photoelectric Sensor provides 100 mm sensing distance using a red LED emitter and NPN output with M12 connector. The Omron E3FA-TN21 thus fits applications where high detection range and optical stability are essential.
With its 20 m sensing capability, NPN output, and rugged M18 plastic construction, the Omron E3FA-TN21 Photoelectric Sensor ensures consistent object detection in industrial environments. It withstands high-pressure cleaning, dust, and temperature variations from β25Β°C to 55Β°C. Belonging to the Omron E3FA Series, it reinforces the brandβs reputation for durable, accurate, and easy-to-install sensors used across Indiaβs automation sector. Its robust sensing performance supports efficient and reliable operation in demanding manufacturing and process control applications.
