Description
Engineered to deliver simplified, Type 4 machine guarding in automated environments, the Omron F3SJ-E0465N25 provides reliable optoelectronic presence sensing. This Easy-type (F3SJ-E) safety light curtain features a 465 mm protective height and a 25 mm detection capability specifically optimized for hand protection. It operates on an NPN output configuration, making it compatible with sinking logic safety controllers and relays. By focusing on essential on-off safety functions, it minimizes wiring complexity and setup time while maintaining compliant industrial safeguarding performance.
Key Features
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Type 4 Safety Rating: Compliant with international safety standards including EN ISO 13849-1 PL e and IEC 61508 SIL3.
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Optimized Resolution: 25 mm beam gap designed specifically for reliable hand and arm detection.
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NPN Output Architecture: Twin NPN solid-state outputs (OSSDs) for seamless integration with sinking control systems.
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Simplified Wiring: Reduced wiring design using standard M12 connections, omitting complex auxiliary functions to prevent field configuration errors.
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Robust Optical Range: Operating scanning range of 0.2 m to 7.0 m, covering a wide array of machine entry points.
Applications
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Robotic Workcells: Guarding primary access areas and perimeter entry points of robotic arms.
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Packaging and Conveying: Presence detection and worker protection around automated palletizers and cartooning systems.
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Assembly Lines: Point-of-operation safeguarding on semi-automated workstations and pneumatic presses.
Technical Specifications
| Parameter |
Specification |
| Manufacturer |
Omron |
| Model Number |
F3SJ-E0465N25 |
| Series Type |
F3SJ-E (Easy Type) |
| Safety Category |
Type 4, PL e, SIL 3 |
| Protective Height |
465 mm |
| Detection Capability |
25 mm diameter (Hand) |
| Number of Beams |
22 |
| Beam Gap |
20 mm |
| Operating Range |
0.2 m to 7.0 m |
| Output Type |
NPN (x2 OSSD outputs) |
| Supply Voltage (Vs) |
24 VDC plus/minus 20% (SELV/PELV) |
| Light Source |
Infrared LED (870 nm) |
| Current Consumption (Emitter) |
41 mA max. |
| Current Consumption (Receiver) |
40 mA max. |
| Enclosure Rating |
IP65 (IEC 60529) |
| Net Weight |
1.8 kg |
| Shipping Weight (Calculated) |
3.0 kg |
Connections and Interfaces
| M12 Connector Pin |
Emitter Function Assignment |
Receiver Function Assignment |
| Pin 1 (Brown) |
+24 VDC Power Input |
+24 VDC Power Input |
| Pin 2 (White) |
Not Used (NC) |
OSSD 2 Output |
| Pin 3 (Blue) |
0 VDC Power Input |
0 VDC Power Input |
| Pin 4 (Black) |
Test Input |
OSSD 1 Output |
Empirical Engineering Insights
Alternative Models & Compatibility
The F3SJ-E "Easy" series is designed for straightforward on-off detection. Unlike the Advanced (F3SJ-A) and Basic (F3SJ-B) series, the F3SJ-E series does not support series connection (cascading) for multi-sided safety fields. Emitters and receivers must be replaced in identical matched pairs; pairing an F3SJ-E emitter with an F3SJ-B receiver will result in a synchronization fault. Always verify the prefix/suffix matches during drop-in replacements to prevent field pairing errors.
Application Pitfalls & Engineering Notes
Because this model features NPN outputs (N25 suffix), it cannot be wired directly to PNP-only safety monitoring modules. Integrating this light curtain into a PNP-based system requires an external NPN-to-PNP converter or a dedicated safety relay compatible with dual sinking inputs. Additionally, ensure the structural mounting is completely rigid; thermal expansion or frame vibrations can easily disrupt optical alignment across the 7.0-meter operating threshold, triggering intermittent OSSD dropouts.
Commissioning & Wiring Tips
To maintain complete electromagnetic immunity, execute correct shielding procedures. The cable shield must be grounded at the control panel chassis. Avoid routing the emitter/receiver cables in parallel with high-power motor lines or variable frequency drive (VFD) output cables. When configuring the Test Input on the emitter, wire it to an external control device to periodically verify system shut-off function as mandated by local safety standards.
Installation Guidelines
CRITICAL WARNING:
Ensure all primary electrical supply lines are locked and tagged out prior to physical installation. De-energize the entire cabinet and verify zero electrical potential. Failure to do so can result in permanent device damage, immediate optical array failure, or severe injury from unexpected machinery start-up.
1
Mechanical Alignment: Securely mount the emitter and receiver directly parallel to each other at the exact height required, ensuring both units sit completely plumb on their vertical axes.
2
Cable Connection: Connect the 4-pin M12 cables to both the emitter and receiver. Route cables using dedicated low-voltage conduit to avoid electromagnetic noise.
3
Optical Verification: Apply 24 VDC power and check the diagnostic LEDs on the receiver. Rotate the housings slightly to find the optimal optical sweet spot where the alignment indicators glow solid green.