Configured for optical presence detection and personnel protection in machinery interlock circuits, the Omron F3SJ-E0385N25 (F3SJ-E Safety Light Curtain) provides direct physical/electrical execution.

Alphanumeric Designation & Model Matrix

The factory code structure identifies physical length, optical resolution, and output switching mechanics across the device series:

• F3SJ-E: Easy-type series architecture engineered for core safety sensing without software setup routines.
• 0385: Indicates a vertical protective height of 385 mm.
• N: NPN open-collector switching logic outputs.
• 25: Specifies a 20 mm optical beam gap establishing a 25-mm diameter object resolution.

System Specifications

Deterministic Network Communications & Bus Integration

The unit routes discrete diagnostic logic directly into industrial fieldbus networks, including Profinet and EtherNet/IP platforms. System response speeds align with deterministic cycle limits, supporting high I/O density scaling across distributed controller nodes while firmware flash compatibility maintains consistent logic execution across hardware revisions.

Deliverables & Ordering Information

• 1 x Omron F3SJ-E0385N25 Optical Emitter Module
• 1 x Omron F3SJ-E0385N25 Optical Receiver Module
• 1 x Intermediate Mounting Hardware Set
• 1 x Field Wiring and Technical Manual

Field Installation & Wiring Guidelines

Physical Alignment & Mechanical Mounting

• Position the optical emitter and receiver heads on identical vertical planes strictly parallel to one another.
• Secure structural brackets against solid machinery frames to prevent operational alignment loss from ambient vibration.
• Verify that the physical distance between transmitter and receiver remains within 0.2 m to 7 m.

Supply Wiring & Noise Immunity

• Power the hardware using a regulated SELV/PELV 24 VDC source with voltage ripple controlled below 10% p-p.
• Run optical sensor cables away from high-voltage AC motor lines and variable speed drive outputs.
• Attach the aluminum outer chassis directly to a low-impedance protective earth point using heavy copper ground braid.

Technical Questions & Diagnostics

• Q: What voltage stability standards apply to the incoming DC supply?

  A: The SELV/PELV power supply must maintain 24 VDC within +/-20% tolerance, keeping peak-to-peak voltage ripple strictly under 10% max to protect internal timing circuits.

• Q: Can cable assemblies be disconnected while the system is under power?

  A: No, live cable swaps are strictly prohibited. Always de-energize the 24 VDC system supply before disconnecting terminal connections to prevent output circuit damage.

• Q: What physical detection resolution is provided by the 18-beam optical array?

  A: The 20 mm beam gap delivers a 25-mm diameter detection capability, engineered specifically for hand and arm intrusion monitoring.

• Q: How do the NPN outputs behave during unobstructed optical conditions?

  A: When the optical path is clear, internal solid-state NPN transistors conduct, pulling the signal line down toward the 0 VDC reference potential.

• Q: What is the current draw for the emitter and receiver heads during active operation?

  A: For an 18-beam array under no-load conditions, the emitter draws a maximum of 41 mA, while the receiver draws up to 40 mA from the 24 VDC rail.

• Q: What ingress protection rating does the metal enclosure housing carry?

  A: The extruded enclosure construction achieves an IP65 rating, resisting fine dust ingress and low-pressure water sprays from any direction.

• Q: What light source wavelength is generated by the transmitter array?

  A: The transmitter head houses infrared LEDs operating at a peak emitted wavelength of 870 nm to establish optical beam continuity.

• Q: How can noise-induced signal drops be avoided near high-voltage motor controls?

  A: Route shielded sensor cables in separate grounded metallic conduits and ensure the drain wire connects to PE ground at a single termination point.