IFM E21321 is a fibre optic through-beam sensor designed for reliable object detection in industrial automation applications. It uses a flexible acrylic fibre optic arrangement with an angled sensing head for installation in restricted spaces. The sensor is designed for use with IFM fibre optic amplifiers including OBF, OCF and OO50 series. Its 2 m fibre length and compact sensing head make it suitable for flexible machine integration. The robust construction supports reliable operation in demanding industrial environments.
Explore performance details, construction highlights, applications, and technical information in one clear overview.
IFM E21321 operates using the through-beam sensing principle, providing reliable detection when the optical path between the fibre elements is interrupted. This arrangement is suitable for detecting objects passing through a defined sensing area. The sensor can be connected to compatible IFM fibre optic amplifiers for signal processing. Its optical design supports stable object detection in industrial automation systems. This makes it useful for applications where dependable presence detection is required.
The fibre optic construction allows the sensing point to be positioned in locations where conventional photoelectric sensors may be difficult to install. The fibre assembly is designed for industrial applications and provides flexibility during machine integration. The minimum bending radius is approximately 1 mm, allowing the fibre to be routed through compact installation spaces. The 2000 mm overall length provides additional flexibility for machine layouts. This design is particularly useful where sensing and amplifier installation locations need to be separated.
The E21321 features an angled sensing head with an M3 sensing head thread. The angled configuration helps position the optical sensing point in confined or difficult-to-access locations. The stainless-steel sensing head provides mechanical durability for industrial installation. Its compact head length helps reduce the required installation space. This makes the sensor suitable for machine builders requiring flexible optical positioning.
The fibre optic sensor is compatible with IFM OBF, OCF and OO50 fibre optic amplifier types. Depending on the amplifier used, the available sensing range can vary significantly. The OBF range is approximately 56 mm, while OO50 provides approximately 120 mm and OCF High Power can provide approximately 2000 mm. This flexibility allows users to select an amplifier according to the required detection distance.
Through-beam sensing principle
FE-11-EPV-O3/F1x0.5/2m design
Angled sensing head
M3 sensing head thread
2000 mm total fibre length
Minimum bending radius approximately 1 mm
PMMA fibre material
Stainless-steel fibre head
PE fibre sheath
Compatible with OBF, OCF and OO50 amplifiers
Suitable for industrial applications
Object presence detection
Industrial automation
Machine automation
Conveyor systems
Parts detection
Assembly machinery
Robotic applications
Production line monitoring
Compact-space sensing
Automation equipment
| Specification | Details |
|---|---|
| Brand | IFM |
| Model | E21321 |
| Product Type | Fibre Optic Through-Beam Sensor |
| Product Designation | FE-11-EPV-O3/F1x0.5/2m |
| Function Principle | Through-beam sensor |
| Compatible Amplifiers | OBF, OCF, OO50 |
| OBF Fibre Range | 56 mm |
| OO50 Fibre Range | 120 mm |
| OCF High Power Range | 2000 mm |
| Ambient Temperature | -40 to 70 °C |
| Sensing Head Version | Angled |
| Sensing Head Thread | M3 |
| Sensing Head Length | 18.5 mm |
| Total Length | 2000 mm |
| Minimum Bending Radius | 1 mm |
| Core Diameter | 0.5 mm |
| Fibre Material | PMMA |
| Fibre Head Material | Stainless steel 1.4305 / 303 |
| Fibre Sheath Material | PE |
| Weight | 35.2 g |
| Supplied Nuts | 4 × M3 hexagon nuts |
| Supplied Washers | 4 × tooth lock washers |
| Supplied Adapter | 1 × OCF adapter |
| Optional Accessory | Fibre optic cutter E20600 |
| Pack Quantity | 1 pc |
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