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Allen Bradley Series 4000 42RLU-4003B

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42RLU-4003B

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The 42RLU-4003B sensor from Allen Bradley's Series 4000 is a robust heavy-duty device designed for reliable performance in various applications. It utilizes retroreflective sensing with a maximum detection range of 10.6 meters and operates effectively within a supply voltage range of 18 to 28 V AC/DC.

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2 Year DO Supply Warranty
Not an Authorized Distributor: DO Supply is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All of our products come with DO Supply's 2-year warranty.
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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 42RLU-4003B

ManufacturerAllen Bradley
Product TypeHeavy Duty Sensor
Product LineSeries 4000
Part Number42RLU-4003B
Weight1.13 lbs (0.51 kg)
UPC662073838197
Sensing ModeRetroreflective
Maximum Range10.6 m
Minimum Reflector Distance76 mm
Supply Voltage18–28 V AC/DC
Output TypeRelay change-over
ConnectionScrew terminals
Power Draw2 VA
Light SourceIR LED
Wavelength940 nm
Beam Angle1.5°
SensitivityManual trim
Switching LogicLight / Dark Select
Pulse ImmunityYes
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The Allen Bradley 42RLU-4003B is classified as a heavy-duty sensor, well-suited for demanding environments requiring reliable detection capabilities. It operates using retroreflective sensing technology, which can effectively detect objects at a maximum range of 10.6 meters. At the same time, it requires a minimum reflector distance of 76 mm for optimal performance.

This unit operates on a supply voltage of 18 to 28 V AC/DC, making it versatile for different power configurations. The output type is a relay change-over, facilitating easy connections to existing systems. Users can connect this sensor to their circuits via screw terminals for secure and straightforward wiring.

With a power draw of only 2 VA, the sensor remains energy-efficient in operation. It utilizes an infrared LED light source with a wavelength of 940 nm, providing reliable performance. The beam angle of 1.5° ensures focused detection, enhancing reliability and reducing false triggers.

The sensitivity of the sensor can be adjusted manually, offering flexibility based on specific application requirements. The switching logic features a light/dark select mode, allowing users to choose the desired operational setting. Additionally, this sensor boasts pulse immunity, which prevents interruptions caused by quick changes in light conditions, further ensuring stability in varying environments.