IFM E21323 is a fibre optic through-beam sensor designed for precise object detection in industrial automation systems. It uses an M4 threaded sensing head and a 2000 mm flexible fibre optic assembly. The sensor is designed for installation in difficult-to-access areas and can be used in robotic applications. Its PMMA fibre construction and stainless-steel sensing head provide reliable industrial performance. The fibre can be cut to the required installation length for convenient machine integration.
Explore performance details, construction highlights, applications, and technical information in one clear overview.
The E21323 uses a through-beam optical sensing principle for detecting interruptions in the optical path. This arrangement provides a defined detection point and is suitable for reliable object presence sensing. The fibre optic elements can be positioned around machinery while the amplifier remains in a convenient location. This provides greater flexibility than conventional photoelectric sensor installation. The design is suitable for automated production and handling systems.
The sensing head features a straight configuration with an M4 thread for mechanical mounting. The straight head design makes alignment straightforward during machine installation. The stainless-steel sensing head provides good mechanical durability in industrial environments. The 23 mm sensing head length allows compact installation in many machine layouts. The M4 mounting arrangement also simplifies integration with suitable mounting accessories.
The fibre optic assembly has a minimum bending radius of approximately 2 mm. This allows the fibre to be routed through relatively tight machine spaces while maintaining the required optical arrangement. The fibre uses PMMA material with a PE protective sheath. The overall fibre length is 2000 mm, providing flexibility for routing between the amplifier and sensing location. The design is intended for industrial and robotic applications.
E21323 supports OBF, OO50 and OCF fibre optic amplifier types. With OBF, the fibre range is approximately 56 mm, while OO50 provides approximately 120 mm. When used with the OCF High Power amplifier, the range can reach approximately 550 mm. This gives users flexibility when selecting the appropriate amplifier for the required application. The sensor can therefore be adapted to different machine detection distances.
Through-beam sensing principle
FE-11-EPA-M4/F0.5x1/2m
Straight sensing head
M4 sensing head thread
2000 mm total length
Minimum bending radius approximately 2 mm
PMMA fibre
Stainless-steel sensing head
PE fibre sheath
Compatible with OBF, OO50 and OCF
Suitable for robotic applications
Industrial-grade construction
Object presence detection
Parts counting
Conveyor automation
Assembly machinery
Robotic systems
Production lines
Material handling
Machine monitoring
Industrial automation
Small-part detection
| Specification | Details |
|---|---|
| Brand | IFM |
| Model | E21323 |
| Product Type | Fibre Optic Through-Beam Sensor |
| Product Designation | FE-11-EPA-M4/F0.5x1/2m |
| Function Principle | Through-beam sensor |
| Compatible Amplifiers | OBF, OO50, OCF |
| OBF Range | 56 mm |
| OO50 Range | 120 mm |
| OCF High Power Range | 550 mm |
| Ambient Temperature | -40 to 70 °C |
| Sensing Head Version | Straight |
| Sensing Head Thread | M4 |
| Total Length | 2000 mm |
| Minimum Bending Radius | 2 mm |
| Core Diameter | 4 × 0.25 mm |
| Fibre Material | PMMA |
| Fibre Head Material | Stainless steel 1.4305 / 303 |
| Fibre Sheath Material | PE |
| Weight | 33.6 g |
| Supplied Nuts | 4 × M4 hexagon nuts |
| Supplied Washers | 4 × tooth lock washers |
| Optional Accessory | Fibre optic cutter E20600 |
| Pack Quantity | 1 pc |
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