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Allen Bradley Bulletin 871U 871U-X5A18

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871U-X5A18

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The 871U-X5A18 model from Allen Bradley’s Bulletin 871U series is engineered as a proximity sensor. This device has a sensing range of 5 millimeters and can operate under varying input voltage levels, specifically from 15 to 132 volts AC and 11 to 52 volts DC.

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Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

Technical specifications for 871U-X5A18

ManufacturerAllen Bradley
Product TypeProximity Sensor
Product LineBulletin 871U
Part Number871U-X5A18
Sensing Distance5 mm
Input Voltage AC15 to 132 V AC
Input Voltage DC11 to 52 V DC
Output Load Current50 mA
Output ConfigurationNormally Open (N.O.) and Normally Closed (N.C.)
Shielded SensorYes
Max. Operating Humidity80% (Non-Condensing)
Max. Storage Humidity80% (Non-Condensing)
Max. Operating Altitude1000 MSL
Output Voltage AC132 V AC
Output Voltage DC150 V DC
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The 871U-X5A18 from Allen Bradley is a proximity sensor that combines versatility and reliability for various applications. Its sensing distance measures 5 mm, allowing precise detection capabilities. It accommodates a wide input voltage range; for AC inputs, it operates from 15 to 132 volts and for DC inputs, it functions effectively between 11 and 52 volts. The load current that the sensor can handle is rated at 50 mA.

This sensor's output configuration includes both Normally Open and Normally Closed options, providing flexibility based on system requirements. Additionally, the device is shielded, which enhances its durability in harsh conditions. With a maximum operating humidity rating of 80% and no risk of condensation, it can withstand environments prone to moisture.

In terms of storage, the device maintains the same humidity tolerances. Its maximum operational altitude is specified at 1000 meters above sea level, making it adaptable to various installation locations. The output voltages for this sensor are rated at 132 volts AC and 150 volts DC, ensuring robust performance in multiple applications.