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Allen Bradley 1791 Block I/O 1791-OB16

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1791-OB16

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The 1791-OB16 from Allen Bradley is a DC output block I/O module within the 1791 Block I/O series. This module supports 16 outputs and is capable of operating within a nominal output voltage of 24 VDC over a specified voltage range.

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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 1791-OB16

ManufacturerAllen Bradley
Product TypeDC Output Block I/O Module
Product Line1791 Block I/O
Part Number1791-OB16
Weight1.19 lbs (0.54 kg)
Number of Outputs16 Outputs
Nominal Output Voltage24 VDC
Output Voltage Range10–30V DC
External DC Power Range19.2–30V DC
Max. Output Current (Vertical)500 mA
Max. Output Current (Horizontal)250 mA
Min. On-State Current1.0 mA per Output
Max. Off-State Leakage Current0.5 mA
Isolation Voltage500V AC
Communication LinkUniversal Remote I/O (RIO)
Operating Temperature0°C to 60°C
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The Allen Bradley 1791-OB16 module is classified as a DC output block I/O component designed to manage diverse output applications. It encompasses a total of 16 outputs, allowing it to support various control tasks effectively. Operating primarily at a nominal output voltage of 24 VDC, it also accommodates a voltage range of 10 to 30 volts DC. For external DC power supply, this module requires connections within a range of 19.2 to 30 volts DC.

The output performance is significant, with the capability to deliver a maximum output current of 500 mA in a vertical orientation and 250 mA in a horizontal setup. Each output is designed to maintain a minimum on-state current of 1.0 mA, ensuring reliable operation with a maximum off-state leakage current of only 0.5 mA. The isolation voltage rating reaches up to 500V AC, offering enhanced protection against electrical interference in various installations.

Communication with other devices is facilitated through the Universal Remote I/O (RIO) link, enhancing system compatibility and integration. This module is engineered to function within a temperature range of 0°C to 60°C, making it well-suited for standard operational environments. Overall, the 1791-OB16 provides a versatile and effective solution for managing DC output needs in a variety of industrial applications.