1791-8AC | Allen-Bradley Block I/O Module, 120V AC, 16 Points: 8 Inputs, 8 Outputs

Description 

The Allen-Bradley 1791-8AC is a block I/O module. This module has Eight (8) 120VAC input channels and Eight (8) 120VAC output channels. This module comes with a power supply, PLC interface, I/O connections and signal processing and conditioning circuitry. This device is ideally used for implementation of Remote I/O architecture.

Technical Specifications 

Information About 1791-8AC

The 1791-8AC is a Distributed I/O device that is primarily used for implementing Distributed I/O solution. This device supports Allen-Bradley’s RIO protocol, a 3-Wire Protocol utilizing Belden 9463 (or approved equal) cable, connecting RIO such as I/O block modules in daisy chain topology. This module belongs to the legacy I/O block family that is compatibly used with PLC2, PLC3, PLC5 legacy controller platforms as well as RIO enabled SLC500 processors with 1747-SN Remote I/O scanner module.

The 1791-8AC functions as RIO adapter only. It is used to interface up to Eight (8) 120VAC input and Eight (8) 120VAC outputs. It sends input updates to the processor connected in the RIO network and receives control command to actuate the module’s output channels via the same RIO network. The module’s embedded RIO interface allows for seamless integration to the said network.

BTR and BTW sends up to 32 arrays of Read and Write messages, which can be connected in parallel for sending larger amount of messages.

The 1791-8AC also has Eight (8) 120VAC Discrete input channels, with ON voltage range of 85-132VAC. This power supply energizes the entirety of the 1791-8AC and the local backplane, to enable the module perform its locally configured functionality.

The 1791-8AC has 8 outputs with a voltage rating between 20 and 132 Volts AC, and an output current rating of 300 to 600 mA at 30 to 60 degrees Celsius vertical mounting and one of 150 to 300 mA at 30 to 60 degrees Celsius, horizontal mounting. The 1791-8AC’s surge current is 10 Amps for 50 milliseconds recurring every 2 seconds at a minimum ON-state output current of 50 mA per output. It has a maximum drop voltage of 1.5 Volts at 300 mA and an OFF-state current leakage at 3 milliamps. It has an output signal delay time of 1 mA at 60 Hertz OFF to ON and 8.3 milliseconds ON to OFF. The 1791-8AC has a power dissipation of 12.9 Watts and a thermal dissipation of 43.99 BTU/hour. Its isolation voltage of 500 Volts AC is tested at 1250 Volts AC between I/O group-to-group, and I/O group-to-logic. It weighs approximately 0.533 kg. (1.18 pounds) and measures 176.5 millimeters x 68.8 millimeters x 98 millimeters (6.95 inches x 2.7 inches x 3.85 inches).

Manufacturer information

Allen‑Bradley components, integrated control and information solutions are built for demanding industrial applications. We integrate control and information across the enterprise to make you as productive as possible.

IQElectro 2 Year Warranty

IQElectro offers a 2-Year Warranty on all our products. This complimentary two-year warranty ensures that every purchase from IQElectro is a secure investment in the future of your company.
Warranty Terms and Conditions

IQElectro is not an authorized distributor.

IQElectro LLC (IQElectro) is NOT an Authorized Distributor or in any way affiliated with Rockwell Automation, Siemens, or any other Manufacturers. IQElectro is NOT an Authorized Dealer of this product. The product may be of older version, date codes, or design than that available from authorized dealers. As IQElectro is not an authorized dealer of this product, the Original Manufacturer's Warranty and Support DO NOT apply. IQElectro sells SURPLUS only and DOES NOT SELL SOFTWARE or FIRMWARE licenses. Some hardware products may contain software and firmware and may not be legally operated without first obtaining an appropriate license from the manufacturer. IQElectro makes no representation as to whether a product will or will not have software or firmware and, if it does, whether the software or firmware is the revision level that you need for your application. IQElectro also makes no representations as to your ability or right to download or otherwise obtain software or firmware for the product from the Original Manufacturer, its distributors, or any other source. IQElectro also makes no representations as to your right to install any such software or firmware on the product. IQElectro will not obtain or supply software or 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 software or firmware. Customer acknowledges and agrees that IQElectro DOES NOT provide any software, firmware, operating system, or right-to-use licenses with the products it sells. Customers understand and agree that proper software (firmware) licensing, maintenance, and upgrades are subject to the applicable manufacturer's Licensing Agreement or similar document. Disclaimer Policy.