OMRON E3FA-RN11 Retro-Reflective Photoelectric Sensor

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

タイプ: M18 Cylindrical Retro-Reflective 光電センサー with MSR Mirror Surface Reflection Suppression & Polarized Red Light

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

✅ Core Specifications

検出距離: 100 mm ~ 4,000 mm (0.1–4 m); Requires reflector E39-R1S (別売り)

光源: Polarized red LED, 波長 624 nm

出力: NPN, single output

電源: DC 10–30 V (UL rating: 10–26.4 V)

応答時間: 0.5 MS

動作モード: ライトオン / ダークON切替可能; one-turn potentiometer for sensitivity adjustment + モード選択

Wiring Style: 2 m pre-wired cable (E3FA-RN21 = M12 connector version)

保護クラス: IP67 / IP69K, resistant to high-pressure hot water washing (widely used in food production lines)

ハウジング: ABS樹脂; M18 mounting thread, 2 lock nuts included

周囲温度: オペレーティング -25 ～ +55 ℃; ストレージ -40 ～ +70 ℃ (no icing or condensation)

周囲光耐性: マックス. 3,000 lx incandescent light; マックス. 10,000 lx sunlight

📌 Wiring Pinout (茶色 / 青 / 黒)

茶色: DC+

青: 直流 0 V

黒: NPN信号出力

📋 Model Number Decoding

E3FA: Axial straight light emission, M18 photoelectric sensor series

R: Retro-reflective type

N: NPN出力

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

🛠️ Typical Applications

Conveyor line part detection, 包装機械, 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 & 代替選択

E3FA-RN12: Same specs, PNP出力, 2 メートルケーブル

E3FA-RN21: 同じパラメータ, M12 4ピンコネクタ, no long cable

E3FB-RN11: Brass threaded housing, higher IP rating, resistant to cutting fluid

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

主な利点のまとめ

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

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

1. マテリアルハンドリング & Sorting Conveyors (Most Common Use)

存在検知, 部品カウント, 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. 包装機械

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

Carton position triggering for case sealers & strapping machines

Workpiece positioning for gift box & カートン包装ライン

3. 食べ物 & 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

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

4. 金属加工, Sheet Metal, スタンピング & Machining Lines (Core MSR Application)

Detection of sheet metal, アルミニウム & 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

(私) 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: 0–500 mm (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) (送信機 + Receiver Set)

1) 長距離: 20 メートル

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: エミッター (-L); 受信機 (-D)

2) Mdium Distance: 15 メートル

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

M12 connector set: E3FA-TN22 / E3FA-TP22

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

(Ⅳ) BGS Background Suppression Type (L) (Immune to background color interference)

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

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

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

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

(VI) Transparent Object Detection Type (B) (ガラス & PET bottles, with E39-RP1)

1) Short Range: 100–500 mm

ケーブル: BN11 2M / BP11 2M

コネクタ: BN21 / BP21

2) Medium Range: 0.1–2 m

ケーブル: BN12 2M / BP12 2M

コネクタ: BN22 / BP22

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

1. Same output & 配線: E3FA-RN11 2M (オリジナルモデル)
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 (同じ機能): E3FB-RN11 2M
6. Compatible Reflector List

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

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