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S51-PA-5-A00-PK is an S51 Series M18 cylindrical photoelectric sensor manufactured by IDEC (formerly DATASENSOR). It adopts an axial retro-reflective design with PNP output, M12 4-pin connector, and a sensing distance of 4m, suitable for general industrial automation detection applications.
- Definición del segmento del modelo (Precise Decoding)
| Segmento | Código | Significado |
| 1 | S51 | Código de serie del producto: S51 Series M18 cylindrical photoelectric sensor |
| 2 | Pensilvania | Optical type + mounting style: P=Plastic housing, A=Axial light emission (R=Radial) |
| 3 | 5 | Tipo de conexión: 5=M12 4-pin connector (2=2m fixed cable) |
| 4 | A00 | Function configuration: A=Standard retro-reflective (non-polarized), 00=Standard output setup (Light ON / Dark ON selectable) |
| 5 | PK | Tipo de salida + housing material: P=PNP output, K=Plastic housing (N=NPN, M=Metal) |
Full Model Definition:
S51 series plastic housing axial-emission retro-reflective photoelectric sensor, M12 connector, salida PNP, standard functional configuration.
- Parámetros de especificación principales (Official Data)
| Categoría de parámetro | Technical Specification | Observaciones |
| General Information | ||
| Fabricante | IDEC / DATASENSOR | Former DATASENSOR acquired by IDEC |
| Número de pedido. | 952701261 | Official unique part code |
| Lifecycle Status | Obsolete | Marked on Mouser and other platforms |
| Housing Dimension | M18 cilíndrico, plastic material | Flat design with 2 mounting holes for flexible installation |
| Parámetros eléctricos | ||
| Voltaje de funcionamiento | 10…30VDC | Compliant with EN60947-5-2 |
| No-load Current | ≤35mA | Low power consumption design |
| Corriente de carga | ≤100mA | PNP output driving capability |
| Output Voltage Drop | ≤2V @100mA | Low saturation voltage |
| Tiempo de respuesta | ≤1ms | High-speed detection |
| Frecuencia de conmutación | 1kilociclos | High-frequency switching performance |
| Optical Parameters | ||
| Detection Type | Retrorreflectante (Non-polarized) | Standard type for conventional object detection |
| Distancia de detección | 4metro | Used with standard reflector |
| Fuente de luz | Visible red LED | Easy alignment and commissioning |
| Optical Axis Direction | Axial | Aligned with sensor central axis |
| Inmunidad a la luz ambiental | 10000lujos (Daylight) | Strong anti-interference capability |
| Físico & Ambiental | ||
| Clase de protección | IP67 | A prueba de polvo e impermeable, adecuado para entornos industriales |
| Temperatura de funcionamiento | -25℃ ~ +55 ℃ | Amplio rango de temperatura |
| Temperatura de almacenamiento | -40℃ ~ +70℃ | |
| Vibración / Shock Resistance | 10gramo / 50gramo | Excellent mechanical stress resistance |
| Tipo de conexión | M12 4-pin connector | Pin assignment: 1=V+, 2=Output, 3=V-, 4=Test |
- Lista de accesorios (Estándar & Optional Parts)
| Nombre del accesorio | Número de pedido. | Descripción |
| Accesorios estándar | ||
| Mounting Nut (Plastic) | G602000008 | 100 pcs per pack, for sensor fixation |
| Soporte de montaje | 95ACC5220 (JOINT-18) | Angle-adjustable mounting bracket |
| Reflector | 95ACC5… | Matches retro-reflective sensor, dedicated for 4m sensing distance |
| Accesorios opcionales | ||
| Protective Sleeve | G5000001 (MEK-PROOF) | Enhanced protection for harsh environments |
| M12 Connecting Cable | 95ACC… | Extension cables in multiple lengths available |
| Sensitivity Adjustment Tool | – | For models with adjustable sensitivity (p.ej., suffix B01) |
- Marcas alternativas & Cross Reference (Reemplazo directo)
| Marca | Modelo de reemplazo | Key Matching Features | Descripción de la diferencia |
| Omrón | E3F3-R4B4 | M18, 4m retro-reflective, PNP, M12 | Faster response time 0.5ms, similar price |
| siemens | 3RG6013-3AB00 | M18, 4m retro-reflective, PNP, M12 | IP67 rated, wider temperature range -25℃~+70℃ |
| Schneider | XUM2APCNL2 | M18, 4m retro-reflective, PNP, M12 | Built-in diagnostic LED, precio ligeramente superior |
| Pepperl+Fuchs | RL31-8-H-4000-IR/47/105 | M18, 4m retro-reflective, PNP, M12 | Infrared light source, stronger ambient light resistance |
| IDEC Alternative | S51-PA-5-B01-PK | Upgraded same-series model | With sensitivity adjustment, 3.5m polarized type |
- Directrices de selección & Soluciones alternativas (Quick Reference)
Selection Rule
Three key factors for S51 selection: Optical type, Tipo de salida, Tipo de conexión
Optical Type: A=Axial retro-reflective, R=Radial retro-reflective, F=Through-beam, C=Diffuse reflective
Tipo de salida: P=PNP, N=NPN
Tipo de conexión: 5=M12 connector, 2=2m fixed cable
Quick Alternative Solutions
- Same Series Replacement: S51-PA-5-B01-PK (Polarized + sensitivity adjustment, ideal for reflective objects)
- Upgraded Replacement: S5N-PA Series (IO-Link support, diagnóstico inteligente, longer sensing distance)
- Functional Replacement:
Through-beam application: S51-PA-5-F00-PK (20m sensing distance)
Diffuse reflective application: S51-PA-5-C01-PK (Fixed 10cm / Adjustable 1–40cm)
Escenarios de aplicación
Packaging Production Line: Detect carton and film positioning; retro-reflective design resists dust interference
Conveyor System: Object presence detection; axial light emission suits side mounting on conveyors
Machine Tool Automation: Workpiece positioning detection; plastic housing anti-collision with IP67 protection
Logistics Sorting: Parcel dimension detection; 4m range covers most sorting line widths
- Air Freight Compliance & Proceso de dar un título
- Air Freight Compliance: No built-in lithium battery / supercapacitor, classified as general cargo for normal air shipment.
- Certificaciones:
CE: Compliant with EN60947-5-2
UL: Compliant with North American safety standards
RoHS: Eco-friendly materials complying with EU directives
- S51 Full Series Model List (Modelos principales)
| Modelo | Tipo | Distancia de detección | Producción | Conexión | Observaciones |
| S51-PA-2-A00-PK | Axial Retro-reflective | 4metro | PNP | 2m Cable | Versión básica |
| S51-PA-5-A00-PK | Axial Retro-reflective | 4metro | PNP | M12 | Current model |
| S51-PA-5-B01-PK | Axial Polarized Retro-reflective | 3.5metro | PNP | M12 | With sensitivity adjustment |
| S51-PR-5-A00-PK | Radial Retro-reflective | 4metro | PNP | M12 | Radial light emission |
| S51-PA-5-F00-PK | Through-beam Receiver | 20metro | PNP | M12 | Matches separate emitter |
| S51-PA-5-C01-PK | Diffuse Reflective | 10centímetro / 1–40cm | PNP | M12 | Adjustable sensing range |
| S51-MA-5-A00-PK | Axial Retro-reflective | 4metro | PNP | M12 | Metal housing |
The S51-PA-5-A00-PK is a cost-effective M18 retro-reflective photoelectric sensor. Featuring 4m sensing distance, salida PNP, M12 connection and IP67 protection, it is a universal choice for industrial automation. Though obsolete, abundant same-series and cross-brand replacements are available. Model selection shall be precisely matched according to sensing distance, object property (reflective / non-reflective), espacio de instalación (axial / radial) and connection method.
