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Allen Bradley Bulletin 872C 872C-N12NN18-D4

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872C-N12NN18-D4

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The Allen Bradley 872C-N12NN18-D4 is an inductive proximity sensor with a robust design featuring an 18 mm barrel diameter. It effectively detects objects at a rated sensing distance of 12 mm and operates under a unshielded mounting style.

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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 872C-N12NN18-D4

ManufacturerAllen Bradley
Product TypeInductive proximity sensor
Product LineBulletin 872C
Part Number872C-N12NN18-D4
Weight0.19 lbs (0.09 kg)
Barrel Diameter18 mm
Rated Sensing Distance12 mm
Mounting StyleUnshielded (non-flush)
Output TransistorNPN (sinking)
Output LogicComplementary N.O. & N.C.
Connection Type4-pin Micro QD (M12)
DC Operating Voltage10 to 30 V
Max Continuous Load Current200 mA
Max Switching Speed1500 Hz
Max Voltage Drop at Full Load18 V
Max Off-State Leakage Current10 µA
Typical Hysteresis≤10% of sensing range
Measurement Repeatability≤5% of sensing range
Ambient Temperature Rating-25°C to +70°C
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The 872C-N12NN18-D4 model from Allen Bradley is a highly effective inductive proximity sensor. Constructed with an 18 mm barrel diameter, it is designed to detect objects within a sensing distance of 12 mm. This sensor is specifically built as an unshielded unit, allowing for optimal performance in non-flush mounting applications.

Operating within a DC voltage range of 10 to 30 volts, the sensor utilizes an NPN transistor for output, configured for sinking applications. Its output logic combines both complementary normally open (N.O.) and normally closed (N.C.) configurations, enabling versatile wiring setups for different control scenarios. Wiring is facilitated through a 4-pin Micro QD (M12) connection, which simplifies installation and maintenance.

In terms of electrical characteristics, the maximum continuous load current is specified at 200 mA, providing stable operation without exceeding limits. The 872C-N12NN18-D4 supports switching frequencies of up to 1500 Hz, accommodating fast-paced applications. The device maintains a maximum voltage drop of 18 volts under full load conditions, ensuring efficient power management.

The unit exhibits low off-state leakage current, rated at up to 10 µA, and has a typical hysteresis of 10% of the sensing range. Measurement repeatability is rated within 5% of the sensing distance, providing reliable sensing performance. With an ambient temperature rating spanning from -25°C to +70°C, the sensor is well-suited for a range of environments, ensuring dependable operation in diverse conditions.