OMRON F3SN-A0225P14-D Safety Light Curtain – F3SN-A Series

OMRON F3SN-A0225P14-D — Type 4 Safety Light Curtain for Precision Machine Guarding

In automated production environments where human-machine interaction is unavoidable, the integrity of the safety guarding system determines both regulatory compliance and operational continuity. The OMRON F3SN-A0225P14-D is a Type 4 electro-sensitive protective device (ESPD) from the F3SN-A Series, engineered to provide reliable finger-detection guarding across a 225 mm protective field. It is certified to IEC 61496-1/-2 Type 4, the highest classification for optoelectronic safety devices, and is recognized under CE, UL, and TÜV schemes — making it directly applicable to SIL 2 (IEC 62061) and PLe / Category 4 (ISO 13849-1) safety architectures.

The F3SN-A0225P14-D operates as an active opto-electronic protective device (AOPD) using infrared beam arrays between a dedicated emitter and receiver unit. With a detection resolution of 14 mm, the device reliably detects finger intrusion into the hazard zone. The 225 mm protective height is dimensioned for compact machine access points — press brake front guards, packaging machine infeed openings, and robotic cell perimeter segments where a full-height curtain would be mechanically impractical. The sensing range spans 0.1 m to 7 m, accommodating both close-coupled and stand-off mounting configurations without optical gain adjustment.

Real-time Stock & RFQ: [email protected] | WhatsApp: +86 18359268345

Technical Parameters

Hardware Logical Analysis

The F3SN-A0225P14-D implements a synchronous infrared beam matrix in which the emitter sequentially pulses each LED element at a fixed clock rate governed by an internal microcontroller. The receiver’s photodiode array samples each corresponding beam within a defined time window; any beam interruption outside the blanking mask triggers an immediate OSSD de-energization within the 8 ms worst-case response budget. This time-multiplexed scanning architecture eliminates cross-talk between adjacent beams without requiring optical baffles, which is a structural advantage over older parallel-beam designs that relied on physical beam separation.

The dual-channel OSSD architecture is implemented with independent output transistors driven by separate microprocessor cores. Each core monitors the other’s output state via cross-monitoring logic; any discrepancy between the two channels — whether caused by a short-circuit to supply, a short-circuit between outputs, or an internal processor fault — forces both outputs to the OFF state within the response time specification. This self-monitoring mechanism satisfies the diagnostic coverage requirements for Category 4 / PLe under ISO 13849-1 without requiring an external safety relay for basic OSSD monitoring.

EMC performance is addressed at the hardware level through differential signal conditioning on the receiver input stage, which rejects common-mode noise induced by variable-frequency drives (VFDs), servo amplifiers, and high-current bus bars operating in proximity. The aluminum extrusion housing provides a continuous Faraday shield around the optical assembly, and the M12 connector’s shield termination is bonded directly to the housing ground plane — a detail that matters in installations where cable runs share conduit with power wiring. The device meets EN 61000-4-3 (radiated immunity, 10 V/m) and EN 61000-4-6 (conducted immunity, 10 V RMS) without external filtering.

The optical alignment system uses a graduated LED indicator on both emitter and receiver housings that displays signal margin in discrete steps. During commissioning, this allows the installer to quantify optical alignment quality rather than relying on a binary pass/fail indicator — a practical advantage in installations with vibration or thermal cycling that may cause minor mechanical drift over time. The device maintains stable operation down to approximately 20% of the nominal optical margin, providing a measurable buffer before nuisance tripping occurs.

System Integration Benefits

• Direct OSSD Compatibility: The dual PNP OSSD outputs interface directly with safety PLCs (Siemens S7-300/400 F-CPU, S7-1500F, Allen-Bradley GuardLogix, Pilz PSS 4000) and safety relays (OMRON G9SA, Pilz PNOZ, Schmersal SRB) without signal conditioning modules, reducing BOM complexity and wiring labor.
• Deterministic Response Latency: The ≤ 8 ms response time is a fixed worst-case value, not a statistical average. This determinism allows accurate calculation of minimum safety distance per ISO 13855 without adding uncertainty margins for response time variability.
• Muting Architecture Support: The F3SN-A0225P14-D supports external muting via dedicated muting input pins, compatible with OMRON F39-MC muting controllers. Two-sensor sequential muting and four-sensor simultaneous muting topologies are both supported, enabling material pass-through without disabling the safety function.
• Blanking Function: Fixed blanking allows up to two beams to be permanently masked for workpiece or fixture pass-through, while floating blanking tracks a moving object across the beam array. Both modes maintain Type 4 certification when configured within OMRON’s specified beam count limits.
• Cascading Capability: Multiple F3SN-A units can be cascaded in series on a single safety channel using OMRON’s cascade connection cables, allowing extended protective heights without multiplying OSSD channel count at the safety controller input.
• Diagnostic Transparency: The receiver unit outputs a discrete diagnostic signal that encodes fault type (optical axis misalignment, OSSD short-circuit, internal fault) distinguishable by pulse width. This allows the safety PLC to log fault categories rather than recording only a generic trip event, which accelerates root-cause analysis during maintenance.
• Reduced Safety Distance Footprint: The 8 ms response time, combined with the 14 mm resolution, allows calculation of a minimum safety distance of approximately 96 mm (using ISO 13855 formula with K = 2,000 mm/s hand approach speed) — enabling closer machine guarding and smaller cell footprints compared to devices with longer response times.
• IP65 Environmental Tolerance: The sealed housing withstands coolant mist, cutting fluid aerosols, and wash-down conditions typical of metalworking and food processing environments, eliminating the need for protective enclosures that would otherwise increase installation depth and obstruct optical alignment access.

Quality Assurance & Global Logistics

Every OMRON F3SN-A0225P14-D unit supplied through siemensplc.com is sourced from verified, traceable supply channels. Each unit is inspected upon receipt for packaging integrity, label authenticity (holographic OMRON security labels, date codes, and lot traceability), and physical condition. Documentation packages — including CE Declaration of Conformity, TÜV certificate reference, and supply chain traceability records — are available upon request for quality audit and incoming inspection purposes.

Shipments originate from our warehouse in Xiamen, China, a major export hub with direct access to international freight forwarders and express courier networks. Standard export packaging uses anti-static foam inserts within double-wall corrugated cartons, with shock indicator labels on outer packaging for transit damage detection. Typical dispatch lead time is 1–3 business days from order confirmation. Express air freight (DHL, FedEx, UPS) delivers to most destinations in Europe, North America, Southeast Asia, and the Middle East within 3–7 business days. Sea freight consolidation is available for volume orders. All shipments include commercial invoice, packing list, and certificate of origin. Import HS code reference: 8536.50 (safety switches / protective devices). The 12-month warranty covers manufacturing defects under normal operating conditions; warranty claims are processed with return merchandise authorization (RMA) and replacement dispatch within 5 business days of fault confirmation.

Contact Information

Email: [email protected]
WhatsApp: +86 18359268345
Web: siemensplc.com
Location: Xiamen, China
© 2026 siemensplc.com. All rights reserved.

{
“@context”: “https://schema.org/”,
“@type”: “Product”,
“name”: “OMRON F3SN-A0225P14-D Type 4 Safety Light Curtain”,
“description”: “OMRON F3SN-A0225P14-D Type 4 safety light curtain, F3SN-A Series, 225mm protective height, 14mm finger detection resolution, dual PNP OSSD outputs, IP65, IEC 61496-1/-2 certified. Available from Xiamen, China.”,
“sku”: “F3SN-A0225P14-D”,
“brand”: {“@type”: “Brand”, “name”: “OMRON”},
“manufacturer”: {“@type”: “Organization”, “name”: “OMRON Corporation”},
“category”: “Safety Light Curtain”,
“countryOfOrigin”: “JP”,
“offers”: {
“@type”: “Offer”,
“url”: “https://siemensplc.com/products/omron-f3sn-a0225p14-d”,
“priceCurrency”: “USD”,
“availability”: “https://schema.org/InStock”,
“seller”: {“@type”: “Organization”, “name”: “siemensplc.com”}
}
}