Description
Product Name: 871U-V5J18 Allen Braley I/O module
Product details:
The Allen-Bradley 871U-V5J18 is a high-performance inductive proximity sensor from the VersaSight™ or specialized sensing lines by Rockwell Automation. It is specifically designed for long-range detection and durability in demanding industrial environments.
1. Product Overview
The 871U series is known for its Universal Voltage capabilities and rugged construction. The “V” in the model number typically signifies a stainless steel face or specialized housing designed to withstand harsh conditions, such as welding environments or food processing washdowns.
2. Technical Specifications
The following table highlights the core parameters for the 871U-V5J18:
| Parameter | Specification |
| Sensing Distance | 5 mm (Shielded) |
| Housing Diameter | 18 mm |
| Input Voltage | 20–250V AC/DC (Universal) |
| Output Type | 2-Wire AC/DC |
| Connection Type | 4-pin Micro QD (Quick Disconnect) connector |
| Housing Material | Stainless Steel (often PTFE coated for weld slag resistance) |
| Switching Frequency | 25 Hz (AC) / 100 Hz (DC) |
| Operating Temperature | -25°C to +70°C (-13°F to +158°F) |
| Enclosure Rating | IP67, IP68, IP69K (Washdown rated) |
3. Key Advantages
- Weld Field Immunity: Highly resistant to the intense magnetic fields generated by electric welding equipment, preventing “false trips.”
- Tough Construction: The stainless steel face protects the sensor from physical impact and abrasive materials better than standard plastic-faced sensors.
- Universal Wiring: The 2-wire AC/DC design allows the sensor to be integrated into almost any existing control system without needing separate power supplies for different voltages.
- Chemical Resistance: Often features a PTFE (Teflon) coating that sheds weld slag and resists corrosive cleaning agents.
4. Important Considerations (Precautions)
- Leakage Current: As a 2-wire sensor, it has a small residual leakage current even in the “OFF” state. Ensure your PLC input or relay can handle this (usually < 1.7 mA).
- Minimum Load Current: These sensors require a minimum current to stay operational. If the connected device draws too little power, the sensor may not function correctly.
- Mounting: Ensure the sensor is mounted securely. While “shielded” versions allow for flush mounting in metal, maintaining the recommended clearance prevents unintended triggering.
- Wiring Safety: Always disconnect power before installation to avoid electrical shock, especially when using AC line voltages.
5. Typical Applications
The 871U-V5J18 is a workhorse in heavy manufacturing, specifically:
- Automotive Assembly: Detecting parts on welding lines where electromagnetic interference is high.
- Food & Beverage: Used in washdown areas where high-pressure water and chemicals are present.
- Metalworking: Sensing the position of machine tool components where metal shavings might damage softer sensors.
- Conveyor Systems: General position sensing and end-of-travel detection.
Advantages: Foxboro, OVATION, TRICONEX, Allen-Bradley, ABB, Motorola, Siemens Moore, Ge Fanuc, Woodward, Bently Nevada and other major import brands!
We have the same series of models in stock. If you don’t find the model you need, please contact us and we will provide you with an official quotation！
Colour：new Warranty: 12 months
Lead Time：3-day working day Country of origin: Sweden
Price: Please contact us Product weight：0.515kg
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
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