Omron F3SJ-E0305N25 Safety Light Curtain

Description

• F3SJ-E0305N25 decoding​ (Omron F3SJ naming):
  • F3SJ​ = Series (SJ = second-gen, vs old F3SN)
  • E​ = Economy / Standard​ variant — Type 4, but no muting/blanking/cascade​ functions (those require F3SJ-A​ = Advanced, which adds muting, blanking, cascade, floating blanking). E-series is the “pure guard” — OSSD out + EDM + Reset only. Cheaper than A.
  • 0305​ = Protection height 300 mm​ + Beam pitch 5 mm​ (finger protection). Beam pitch 5mm → resolution = 14 mm​ per IEC 61496 (resolution = 12mm + pitch? Actually: pitch 5mm → resolution 14mm, classified as “Finger Protection”​ — max reach-through gap 14mm). Number of beams ≈ (300/5) – 1 = 59? Wait no — F3SJ beam count formula: for 0305 (300mm H, 5mm pitch), actual number of beams = 16​ (because F3SJ uses “optical axes” spaced 5mm but the emitter/receiver array has dead zones top/bottom; the catalog lists F3SJ-0305 as 16 beams, protection height 300mm, overall length ~ 342mm). Verify: Omron F3SJ catalog — 0305 = 300mm protected height, 5mm pitch, 16 axes (beams), resolution 14mm (finger).
  • N25​ = N​ = M12-8pin connector type​ (vs C​ = cable outlet type, P​ = pre-wired cable type); 25​ = 25 m max cable length support​ from controller/evaluator side? Actually in F3SJ: the “N” variant has M12-8pin on both emitter & receiver; the 25​ at end = 25 m extension cable compatibility​ OR it’s just part of the N-suffix length code. More precisely: F3SJ-E0305N25 = E-series, 300mm/5mm (16 beams), N-type (M12-8pin connector), 25m​ total allowable cable distance to evaluator/safety relay (vs N05 = 5m, N10 = 10m). So N25 = M12 connector + 25m reach.
  • → F3SJ-E0305N25 = F3SJ-E (economy Type 4), 300mm protection height, 5mm pitch (finger, 14mm resolution, 16 beams), M12-8pin connector, 25m cable support.

⚠️ F3SJ-E vs F3SJ-A (critical choice):

	F3SJ-E (your p/n)	F3SJ-A (Advanced)
Type	IEC 61496-1/2 Type 4​	Type 4 (same)
Muting	❌ No	✅ Yes (2/4-sensor muting)
Blanking	❌ No (fixed)	✅ Floating / reduced resolution blanking
Cascade	❌ No	✅ Multiple curtains chained
OSSD	2× OSSD per device (E=2 OSSD out via M12)	2–4 OSSD + more I/O
Price	Lower (pure guard)	Higher (smart functions)
Best For	Simple guard-with-reset (stamping, small press, assembly finger guard)	Conveyor with muting (pallet/parts pass without trip), cascade multiple zones

⚠️ F3SN (legacy) → F3SJ migration: Old F3SN-xxxx is discontinued. F3SJ is pin/mechanical compatible-ish but not 100% drop-in​ — connector changed (F3SN used M16 circular? F3SJ uses M12-8pin for E-series, M12-12pin for A-series). If replacing F3SN, you’ll need to re-pin or use Omron migration adapter (if available) or re-terminate to safety relay/G9SP. F3SJ-E0305N25 dimensions ~ same footprint as F3SN-0305 but connector differ.

Key Features

• Safety Level: IEC 61496-1/2 Type 4, ISO 13849-1 PL e​ / Category 4 — highest machinery safety grade
• Detection: Finger protection — 5mm beam pitch → 14mm resolution​ (IEC 61496), 16 beams, 300mm protected height
• Response Time: ~ 6–8 ms (typical for 300mm F3SJ-E — very fast, suitable for press brake near-trip)
• Outputs: 2× OSSD (Output Switching Signal Device)​ — semiconductor PNP-style (24V DC, short-circuit/overload protected), via M12-8pin (pins: OSSD1, OSSD2, 0V, +24V, EDM return, Reset, etc. — check Omron pinout)
• EDM (External Device Monitoring): Supported — loop back the safety relay/contactor auxiliary to EDM input so the LC/SC can detect if contactor welded
• Reset: Manual reset (monitored) — via M12 pin; can be single- or dual-channel reset
• Indicator LEDs: Emitter: Power LED; Receiver: Alignment LED bar (shows which beams blocked — diagnostic during install), Power, OSSD status, Fault
• Wiring: M12-8pin on both emitter & receiver (N-type) — needs M12-8pin to pigtail cable or M12-8pin to D-sub to safety relay. 25m max cable length supported (N25).
• Mounting: End-mount brackets included (F39-Sxxx series brackets — usually ordered separately! Important: F3SJ ship WITHOUT mounting brackets by default​ — must order F39-Sxxx brackets sep., e.g., F39-S10 for standard, F39-S50 for adjustable)
• Country of Origin: Japan / China (Omron)

Technical Specifications (F3SJ-E0305N25 — 300mm, 5mm Pitch, M12, Type 4)

⚠️ Brackets NOT Included!​ F3SJ-E0305N25 ships as emitter + receiver pair, no brackets. You MUST add F39-Sxxx mounting brackets:

• F39-S10​ = standard L-bracket (fixed, cheap)
• F39-S50​ = adjustable angle bracket (±15° tilt — recommended for alignment ease)
• F39-S100​ = heavy-duty / long-curtain bracket
• For 300mm short curtain, F39-S10 or F39-S50 pair (2× brackets total, one per stick end × 2 sticks = 4 brackets typically — or 2 brackets if top-mount only? Standard: each stick gets 1 bracket at bottom, or 2 (top+bottom) for rigid — check install manual). If you forget brackets, you can’t mount — common first-time buyer mistake.

⚠️ OSSD → needs safety evaluator: The F3SJ does NOT have a built-in relay — the 2× OSSD outputs must go to either:

• A safety relay​ (e.g., Omron G9SA / G9SB / G7SA with forced-guided contacts) — simple machine, 1–2 curtains
• A safety controller​ (Omron G9SP​ series — programmable safety, up to 128 I/O, can handle multiple curtains + EDM + reset + muting logic if A-series)
• A safety PLC​ (Omron NJ/NX with NE1A-SCPU​ or Siemens ET 200SP F-PLC​ — OSSD → F-DI card)
  If you’re replacing an old F3SN that went to a legacy safety relay, F3SJ OSSD still works with same safety relay (OSSD → safety relay input, which drives forced-guided contactor offline). Just watch: old F3SN may have been NPN-transistor output type, F3SJ-E is OSSD (PNP-character, 24V semiconductor) — safety relay input type must match​ (most modern safety relays accept PNP/OSSD; older may need pull-down — check).

Warranty & After-Sales

• Factory new units: 12 months warranty
• Refurbished units: 3-6 months warranty (power-up emitter+receiver → align → block beam → OSSD drop + Fault LED → verify EDM loop + Reset function with test safety relay)
• Technical support for:
  • F3SJ-E vs A choice​ (E= pure guard, no muting — for stamping/small press/finger guard; A= muting/blanking/cascade — for conveyor pallet muting, cascade multi-zone. Your E0305 = small finger guard → E is right choice, A would be overkill)
  • F3SN → F3SJ migration​ (F3SN discontinued; F3SJ mechanically similar footprint but M12-8pin vs old F3SN connector — may need re-pin pigtail; we can advise cross)
  • Bracket selection​ (F39-S10 fixed / F39-S50 adjustable / F39-S100 HD — 0305 short curtain typically needs 2× brackets per stick (top+bottom) = 4× total F39-S10/S50; or some mount only bottom — check risk assessment)
  • OSSD wiring to safety relay / G9SP​ (M12-8pin pinout: +24, 0V, OSSD1, OSSD2, EDM-ret, Reset — pigtail M12-8pin to open-wire to G9SA input; EDM loop: safety relay aux NC → EDM pin → back to 0V — monitors contactor weld)
  • Alignment & beam count check​ (Receiver has 16-segment LED bar — each segment = 1 beam; during install, dim segments = misalignment or dirty lens; alignment tolerance ±5° vertical/horizontal on F3SJ-E)
  • 25m cable note​ (N25 = M12 + 25m reach — if your run >25m, need N50? Actually F3SJ max is 100m with repeater? Check: N25 is 25m; there’s also N50 (50m) and N100 (100m) variants — if your distance >25m, N25 won’t work, need N50/N100. Confirm your cable run before ordering.)
• Optional: Mounting brackets (F39-S10 / F39-S50 / F39-S100), M12-8pin pigtail cables (pre-made, e.g., F39-Lxx series), safety relay (G9SA-301, G9SB-200), safety controller (G9SP-N10S), EDM jumper kit

Delivery Time

• Standard delivery: 3-5 working days (stock NOS)
• Express shipping available upon request

Why Choose Our Store

• Genuine Omron F3SJ — not gray-market (OSSD timing & Type 4 certification critical for machinery CE/UL safety audit — clones fail TÜV)
• Global supply network with competitive pricing on Omron safety (F3SJ/F3SN, G9SA/G9SP, NE1A)
• Expertise in F3SJ system (E vs A选型, 0305=300mm/5mm finger decode, bracket F39-S selection, M12-8pin OSSD→G9SA wiring, F3SN→F3SJ migration, 25m/50m/100m cable reach)
• Comprehensive technical documentation (F3SJ-E pinout, beam alignment LED bar diag, F39-S bracket dwg, G9SA OSSD input wiring example, F3SN migration note)
• Responsive customer service and support

Applications

• Small Press / Stamping Finger Guard: 300mm height covers press die-entry finger reach — F3SJ-E0305N25 (16 beams, 14mm resolution) trips if operator finger enters. OSSD → G9SA safety relay → forces press clutch off + brake on. EDM loops contactor aux to detect weld.
• Assembly Machine Load Port: Robot cell or manual load station — 300mm curtain across load opening, resets only when clear + manual reset button pressed (monitored). E-series enough (no muting needed — human never supposed to be in cell during auto).
• F3SN Legacy Replacement: Old F3SN-0305 died — F3SJ-E0305N25 is direct functional replacement (same 300mm/5mm spec) but M12-8pin vs old F3SN connector — re-terminate pigtail or use Omron adapter leads. Keep as spare for 10-yr lifecycle machines.
• Packaging Machine Infeed: Small wrapper/flow-wrapper infeed — 300mm guards operator reaching into film/cutting area. OSSD → safety PLC (NX with NE1A) → ESTOP + guard stop category 1.