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Comanda nr.: BES03RM; Model complet: BES M18MG-PSC16F-S04G, M18-thread non-flush mount inductive proximity sensor.
Codul modelului Explicația
M18: M18×1 cylindrical threaded housing
MG: Non-flush mounting, extended sensing range
P: Ieșire PNP
SC: 3-fir DC
16F: Nominal sensing distance 16 mm
S04G: M12-A-coded male connector, 3-pin
Core electrică & Specificatii mecanice
| Articol | Caietul de sarcini |
| Distanța de Sentire | 16 mm (non‑flush) |
| Ieșire | PNP‑NO Normally Open |
| Tensiune de alimentare | 10-30VDC |
| Max. Curent de sarcină | 200 mA |
| Frecvența de comutare | 430 Hz |
| Protecție la intrare | IP68 |
| Temperatura de operare | -40 … +85 ℃ |
| Locuințe | Nickel‑plated brass; Față sensibilă: PBT plastic |
| Dimensiuni | M18×1, overall length 66 mm |
| Conexiune | M12‑3‑pin male plug |
| Protections | Reverse‑polarity protection, protectie la scurtcircuit, protectie la suprasarcina |
| Greutate | 52 g |
| Cod HS | 85365019 |
M12-3-pin Pin Assignment (Male Connector)
- Maro: DC + (10-30V)
- —— (Nu este conectat)
- Albastru: 0V/GND
- Negru: Ieșire semnal (PNP)
Nota: This is a 3-pin M12, not standard 4-pin. Select M12-A-coded 3-core cable for procurement.
Ghid de instalare
- Non-flush type. Do not sink fully into metal bracket; sensor front face must protrude from metal surface.
- Center-to-center distance between adjacent sensors ≥36 mm to prevent mutual interference.
- LED is located at plug root, 360° visible; LED lights up upon target detection.
Common Replacement Options
Original Balluff Echivalent
BES M18MG-NSC16F-S04G (BES03RN): Aceeași dimensiune & sensing range, NPN normally-open version.
Alternative interne compatibile (M18 non-flush,16 mm,PNP-NO,conector M12)
Inovaţie: IS-M18-16PO-M12
Huong: LJ18A3-16-Z/BY-G (M12 connector variant)
Replacement checkpoints: confirm 16 mm sensing distance, non-flush mount, PNP-NO, M12-3-pin, 10-30Alimentare VDC.
Aplicații tipice
Metal-part detection on assembly lines, machine-tool limit sensing, conveyor position confirmation, depozitare & logistică, harsh-environment use (temperatură scăzută, praf, water splash).
Balluff BES03RM (BES M18MG-PSC16F-S04G) Complete Installation Manual
Comanda nr.: BES03RM, Model complet: BES M18MG-PSC16F-S04G, M18 non-flush inductive proximity sensor
- Prezentare generală a produsului
- Tip: Inductive proximity switch, non-flush (cannot be flush-mounted)
- Locuințe: M18×1 nickel-plated brass; sensing face PBT engineering plastic
- Distanța de detectare: Nominal Sn=16 mm, effective operating distance Sr≈16 mm
- Ieșire: PNP NO normally-open, 3-wire DC 10-30VDC, max. load 200 mA
- Interfață: M12-A-coded 3-pin male plug (NOT 4-pin)
- Evaluare: IP68; Operating temperature -40℃～+85℃; Switching frequency 430 Hz
- Accesorii standard: 2 buc contrapiulițe M18
- Specificații de instalare mecanică (Critic: Never sink non-flush sensor into metal bore)
⚠️This is a non-flush sensor. The sensing face must not sink inside metal mounting holes. Sinking will cause severe sensing-range loss, false triggering or failure to detect targets.
2.1 Dimensiuni (Unitate: mm)
Fir: M18×1
Lungime totală: 66 mm
Status LED at M12 plug root, 360° viewable; LED illuminates when metal target is detected
Lock nut across-flats: 24 mm
2.2 Mounting Torque
Lock-nut tightening torque: 15-20 N·m, maximum 25 N·m. Exceeding will cause thread stripping or housing cracking.
2.3 Multi-sensor Spacing
Center-to-center distance between identical sensors ≥36 mm to avoid crosstalk false switching
Minimum clearance between sensor sidewall and nearby metal wall ≥18 mm; metal must not hug sensor body
Reference target: 18×18 mm steel plate; smaller actual targets reduce effective sensing range.
2.4 Working Gap to Target
Recommended operating gap: 4-12 mm; maximum reliable operating gap ≤14 mm; avoid continuous operation at the 16 mm limit threshold.
Sensing face shall face metal target as perpendicular as possible; tilt angle preferably <15°. Larger tilt reduces effective sensing distance.
- Cablaje electrice (M12-A-coded 3-pin male pin-out)
| M12 Pin No. | Culoarea firului | Funcţie |
| 1 | Maro | DC+ Power 10‑30V DC |
| 2 | — | Nu este conectat, no internal wiring |
| 3 | Albastru | 0V / GND |
| 4 | Negru | Ieșire semnal PNP (NU Deschis normal) |
❗Use M12-A-coded 3-core female-end cables. Standard 4-core M12 cables are also acceptable, leave pin 2 unconnected.
Built-in Electrical Protections
Reverse-polarity protection, protectie la scurtcircuit la iesire, protectie la suprasarcina.
PLC connection: Connect to PNP-type digital input module.
Sarcini inductive (relay coils): Fit free-wheeling diode in reverse parallel across coil terminals.
Sarcini rezistive: Keep load current ≤200 mA.
Operațiuni interzise
- Do NOT apply AC voltage; only 10-30 VDC DC supply permitted.
- Route sensor cables separately from high-power power cables to minimize electromagnetic interference.
- Power-on Commissioning Procedure
- Complete all wiring; verify no short-circuits before applying power.
- No metal target present: LED OFF.
- Move steel target toward sensing face: LED turns ON within sensing range; LED turns OFF after removing target.
- Cycle target repeatedly: confirm stable ON/OFF without flickering.
This sensor has no sensitivity potentiometer. Sensing distance cannot be adjusted electronically; adjust mechanical gap only.
- Condiții de mediu de funcționare
- IP68 rating permits temporary water immersion; fully tighten M12 connector, poor sealing degrades IP rating.
- Operating temperature -40℃～+85℃; select low-temperature-rated cables for cold environments.
- Avoid heavy impact to PBT sensing face; prevent welding-spatter exposure.
- Depanare
| Simptom | Check Items |
| LED never lights | Check 10‑30VDC supply, brown/blue wiring, fully‑seated M12 plug |
| LED always ON without target | 1. Sensor sunken into metal bore (most common fault); 2. Nearby metal too close to sensor body; 3. Insufficient inter‑sensor spacing; 4. Output short‑circuit |
| Intermittent flickering when target arrives | Operating gap near 16 mm limit; nearby metal interference; EMI from power cables; undersized target |
| LED OFF even with target present | Eroare de cablare; excessive target gap; non‑ferrous target (Al/Cu reduce sensing performance) |
- Official Documentation Access
Search order number BES03RM on Balluff official website. Enter product page, download original datasheet and 2D/3D CAD files under Downloads tab.
Generic installation document ID for extended-range inductive sensors: 939229.
- De rezervă & Replacement References
- NPN counterpart: BES03RN (BES M18MG-NSC16F-S04G)
- Domestic compatible: M18 non-flush,16 mm,PNP-NO,M12-3-pin connector.
Balluff BES03RM (BES M18MG-PSC16F-S04G) Fișa tehnică completă
Comanda nr.: BES03RM; Model complet: BES M18MG-PSC16F-S04G
Tip: M18 cylindrical non-flush-mount inductive proximity sensor
Informații de bază
| Articol | Caietul de sarcini |
| Principiul de funcționare | Inductiv, detects metallic targets |
| Stil de montare | Non‑flush, cannot be flush‑mounted into metal bore |
| Locuințe | M18×1 external thread, nickel‑plated brass |
| Sensing‑face Material | Plastic de inginerie PBT |
| Dimensiuni generale | Φ18 mm × total length 66 mm |
| Lock‑nut across‑flats | 24 mm, 2 lock‑nuts supplied |
| Greutate | 52 g |
| Cod HS | 85365019 |
| Aprobari | CE, UKCA, cULus, WEEE, compliant with IEC 60947‑5‑2 |
Performanța de detectare
| Articol | Caietul de sarcini |
| Nominal Sensing Distance Sn | 16 mm |
| Effective Operating Distance Sr | 12.8 ~ 19.2 mm |
| Reference Target | 18 mm×18 mm×1 mm steel plate |
| Frecvența de comutare | 430 Hz |
| histerezis | ≤10% of Sn |
| Reglarea sensibilității | Not adjustable (fixed range) |
Evaluări electrice
| Articol | Caietul de sarcini |
| Supply Voltage Ub | 10 ~ 30 VDC |
| No‑load Current | ≤8 mA |
| Tip ieșire | PNP Normally‑Open (NU), 3‑wire DC |
| Max. Curent de sarcină | 200 mA |
| Built‑in Protections | Reverse‑polarity, scurtcircuit, protectie la suprasarcina |
| Indicator de stare | LED at M12 plug root, 360° visible; lights when metal detected |
| Interfață | M12‑A‑coded 3‑pin male plug (NOT 4‑pin) |
M12-3-pin Pin-out
| PIN nr. | Culoarea firului | Funcţie |
| 1 | Maro | DC+ Power 10‑30VDC |
| 2 | — | Nu este conectat |
| 3 | Albastru | 0V / GND |
| 4 | Negru | PNP signal output NO Normally‑Open |
Cable recommendation: M12-A-coded female-end, 3-cablu miez. 4-core cable usable with pin 2 left open.
Mecanic & Evaluări de mediu
| Articol | Caietul de sarcini |
| Protecție la intrare | IP68 (connector fully tightened) |
| Temperatura de operare | ‑40 ℃ ~ +85 ℃ |
| Recommended Lock‑nut Torque | 15‑20 N·m; absolute maximum 25 N·m to avoid thread damage |
| Rezistenta la vibratii | 10‑55 Hz, amplitude 1 mm, IEC 60068‑2‑6 |
| Rezistenta la socuri | 30 g / 11 Domnișoară, IEC 60068‑2‑27 |
Installation Spacing Rules
- Adjacent identical-model sensors: center-to-center ≥36 mm for anti-crosstalk.
- Minimum gap between sensor side and metal wall: ≥18 mm.
- Suggested working gap: 4-12 mm; avoid continuous operation near 14-16 mm threshold.
- Keep target perpendicular to sensing-face; tilt angle＜15°, sensing distance drops with larger tilt.
Related Original-part Numbers
- BES03RN (BES M18MG-NSC16F-S04G): same mechanical & gamă, NPN normally-open.
Note importante
- Non-flush-type sensor: sensing face must protrude from metal mounting surface. Sinking causes range degradation, false-switching or no detection.
- DC-only device, AC input forbidden.
- Fit reverse-parallel free-wheeling diode for inductive loads e.g. relay coils.
- Separate sensor signal cables from high-power power cables to reduce EMI.
Quick Troubleshooting Summary
LED permanently ON without target: Likely sunken installation, nearby metal interference or insufficient inter-sensor distance.
Flickering upon detection: Working gap close to 16 mm maximum limit; reduce mechanical gap.
LED never illuminates: Verificați tensiunea de alimentare, M12 connector seating and brown-blue power wiring.
