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Allen Bradley Photoswitch 42DRU-5500

Product image is representative; revision or series may vary. Contact us to request a specific version.

42DRU-5500

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The 42DRU-5500, a Photoswitch Intrinsically Safe Retro Photohead from Allen Bradley, operates within a voltage range of 13 to 29.5 VDC and features a rapid response time of just 1 millisecond. It is engineered with dual outputs, providing both NPN and PNP signals capable of delivering an output current of 20 mA.

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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 42DRU-5500

ManufacturerAllen Bradley
Product TypePhotoswitch Intrinsically Safe Retro Photohead
Product LinePhotoswitch
Part Number42DRU-5500
UPC662073837855
Weight0.31 lbs (0.14 kg)
Input Voltage13 to 29.5 VDC
Supply Current26 to 30 mA
Response Time1 ms
Dual Outputs1 NPN, 1 PNP
Output Current20 mA
Reverse Polarity ProtectionYes
Output Overvoltage Protection w/ BarriersYes
Operating ModeReflex
Operating Temperature Range-40 to 65 °C
Relative Humidity90% (non-condensing)
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The 42DRU-5500 is a photoswitch intrinsically safe retro photohead manufactured by Allen Bradley. This device is suitable for use in hazardous locations due to its intrinsic safety features. It is capable of accepting an input voltage between 13 VDC and 29.5 VDC, with a supply current requirement of 26 to 30 mA. With a remarkably fast response time of 1 millisecond, it allows for quick detection and signaling functions. The photohead offers dual outputs: a 1 NPN output and a 1 PNP output, each supporting an output current of 20 mA.

To safeguard against wiring errors, the unit features reverse polarity protection as well as output overvoltage protection with built-in barriers. The 42DRU-5500 operates in a reflex mode, direct responses based on incoming light signals provide an efficient operational characteristic. Designed to function in challenging conditions, it can withstand temperatures as low as -40 °C and as high as 65 °C. Additionally, the device can handle relative humidity levels of up to 90% in non-condensing environments, making it robust for a variety of applications.