OMRON E3FA-RN11 Retro-Reflective Photoelectric Sensor

(Standard suffix: 2M, 2-meter pre-wired cable)

Tipo: M18 Cylindrical Retro-Reflective Sensor fotoelétrico with MSR Mirror Surface Reflection Suppression & Polarized Red Light

MSR Function: Eliminates false triggering caused by mirror reflection from shiny metal workpieces.

✅ Especificações principais

Distância de detecção: 100 mm ~ 4,000 milímetros (0.1–4 m); Requires reflector E39-R1S (vendido separadamente)

Fonte de luz: Polarized red LED, comprimento de onda 624 nm

Saída: NPN, saída única

Fonte de energia: DC 10–30 V (UL rating: 10–26.4 V)

Tempo de resposta: 0.5 EM

Modo de operação: Luz acesa / Dark-ON comutável; one-turn potentiometer for sensitivity adjustment + seleção de modo

Estilo de fiação: 2 m pre-wired cable (E3FA-RN21 = M12 connector version)

Classe de Proteção: IP67 / IP69K, resistant to high-pressure hot water washing (widely used in food production lines)

Habitação: ABS plastic; M18 mounting thread, 2 lock nuts included

Temperatura ambiente: Operando -25 ~ +55 ℃; Armazenar -40 ~ +70 ℃ (sem gelo ou condensação)

Imunidade à luz ambiente: Máx.. 3,000 lx incandescent light; Máx.. 10,000 lx sunlight

📌 Wiring Pinout (Marrom / Azul / Preto)

Marrom: CC+

Azul: CC 0 V

Preto: Saída de sinal NPN

📋 Model Number Decoding

E3FA: Axial straight light emission, M18 photoelectric sensor series

R: Retro-reflective type

N: Saída NPN

11: Pre-wired cable type (11=NPN; 12=PNP; 21=M12 connector NPN)

🛠️ Aplicações típicas

Conveyor line part detection, máquinas de embalagem, in-position detection, metal part inspection, food washing lines, warehouse sorting.

Not suitable for transparent objects (select BN series for transparent material detection).

⚠️ Cross-Model & Seleção Alternativa

E3FA-RN12: Same specs, Saída PNP, 2 m cabo

E3FA-RN21: Mesmos parâmetros, Conector M12 de 4 pinos, no long cable

E3FB-RN11: Brass threaded housing, higher IP rating, resistente ao fluido de corte

Application Scenarios of E3FA-RN11 (Polarized Retro-Reflective with MSR, M18, NPN, 0.1–4 m)

Resumo das principais vantagens

Polarized red light + MSR anti-mirror reflection; Resistente à lavagem IP67/IP69K; longer sensing range than standard diffuse sensors; wiring only on one side, reflector E39-R1S installed on the opposite side.

Limitação: For opaque objects only. Not applicable to transparent films, glass bottles or clear PET containers.

1. Manuseio de materiais & Sorting Conveyors (Uso mais comum)

Presence detection, contagem de peças, and in-position monitoring for cartons, tote bins and pallets

Blocking & occupancy detection on roller, belt and chain conveyors

Sorting chute detection: verify carton arrival and missing-part alarm

Pallet & skid detection (4 m long range ideal for wide aisles)

2. Máquinas de embalagem

Product passing detection & counting on vertical form-fill-seal machines and horizontal flow wrappers

Carton position triggering for case sealers & máquinas de cintar

Workpiece positioning for gift box & linhas de embalagem de papelão

3. Comida & Beverage Production Lines (IP69K Washdown Compliant)

Conveyor detection for cans, opaque plastic bottles and food trays

Post-wash & post-cook conveyor sections, resistant to splashing and high-pressure rinsing

Position confirmation & no-product alarm for meat & pastry packaging lines

Observação: Do not use RN11 for transparent PET bottles or clear films; choose dedicated transparent-detection BN series instead.

4. Metalurgia, Chapa metálica, Estampagem & Machining Lines (Core MSR Application)

Detection of sheet metal, alumínio & stainless steel parts (MSR suppresses mirror reflection to avoid false signals)

Blank presence & positioning confirmation for stamping blanking and robot loading/unloading

Part-in-place verification for connector assembly

Full E3FA Series Model List

(EU) Retro-Reflective Type (R) with MSR Anti-Reflection

1) Long Range: 0.1–4 m (with E39-R1S)

Pre-wired (2M cable)

NPN: E3FA-RN11 2M

PNP: E3FA-RP11 2M

M12 Connector

NPN: E3FA-RN21

PNP: E3FA-RP21

2) Coaxial Short Range: 0–500mm (with E39-R1S)

Pre-wired (2M cable)

NPN: E3FA-RN12 2M

PNP: E3FA-RP12 2M

M12 Connector

NPN: E3FA-RN22

PNP: E3FA-RP22

(II) Through-Beam Type (T) (Transmissor + Conjunto receptor)

1) Longa Distância: 20 eu

Pre-wired set: E3FA-TN11 2M / E3FA-TP11 2M

Separate units: Emitter E3FA-TN11-L 2M; Receiver E3FA-TN11-D 2M

M12 connector set: E3FA-TN21 / E3FA-TP21

Separate units: Emissor (-eu); Receptor (-D)

2) Mdium Distance: 15 eu

Pre-wired set: E3FA-TN12 2M / E3FA-TP12 2M

M12 connector set: E3FA-TN22 / E3FA-TP22

(III) Diffuse-Reflective Type (D) – 6 Distance Variants

(4) BGS Background Suppression Type (eu) (Immune to background color interference)

100 milímetros: LN11 2M / LP11 2M; Connector LN21 / LP21

200 milímetros: LN12 2M / LP12 2M; Connector LN22 / LP22

(V) Limited-Distance Reflective Type (V) (Detect near objects only, block far background)

10–50mm: VN11 2M / VP11 2M; Connector VN21 / VP21

(VI) Transparent Object Detection Type (B) (Vidro & Garrafas PET, with E39-RP1)

1) Short Range: 100–500mm

Cabo: BN11 2M / BP11 2M

Conector: BN21 / BP21

2) Medium Range: 0.1–2 m

Cabo: BN12 2M / BP12 2M

Conector: BN22 / BP22

III. Alternative Models for E3FA-RN11 (R Series Only)

1. Same output & fiação: E3FA-RN11 2M (modelo original)
2. Switch to PNP output: E3FA-RP11 2M
3. Switch to M12 plug: E3FA-RN21
4. Short-range coaxial version: E3FA-RN12 2M / RN22
5. Oil-resistant metal housing (mesma função): E3FB-RN11 2M
6. Compatible Reflector List

R Retro-Reflective (RN11 / RN12): E39-R1S

B Transparent Detection (BN11 / BN12): E39-RP1