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Allen Bradley 1791-8BC 8-Point DC Block I/O Module

Allen Bradley 1791-8BC 16-Point DC Block I/O Module

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ManufacturerAllen Bradley

Part number1791-8BC

Input Channels 8 DC

Output Channels 8 DC

Input Voltage 10-30V DC

Output Voltage 10-30V DC

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12-month warranty

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Veteran-owned

CAGE: 9NK75

8 DC Inputs 8 DC Outputs DIN Rail Mount Rackless Design RIO Communication 10-30V DC Operation

Product description

The Allen-Bradley 1791-8BC is a versatile 16-point DC block I/O module, offering eight 24V DC discrete inputs and eight 24V DC discrete outputs. It operates within a 10-30V DC voltage range for both inputs and outputs, with an output current rating of 500mA at 60°C in vertical mounting. This module supports Remote I/O (RIO) communication protocol and is designed for rackless, DIN rail mounting.

Ideal for implementing distributed I/O architectures, the 1791-8BC is commonly used in various industrial automation applications, including manufacturing, process control, and machine building. Its compact design and robust build quality ensure reliable performance in demanding environments.

Stanlo Automation, a veteran-owned surplus parts distributor, provides the Allen-Bradley 1791-8BC. We ensure quality and reliability, offering a cost-effective solution for your automation needs. Partner with us for your industrial component requirements.

Technical specifications

Input Channels	8 DC
Output Channels	8 DC
Input Voltage	10-30V DC
Output Voltage	10-30V DC
Output Current	500mA @ 60°C (Vertical)
Communication	RIO Protocol
Power	19.2-30V DC

Common applications

Manufacturing Automation

Process Control

Machine Building

Data Acquisition

Remote I/O Systems

Compatible systems

Allen-Bradley RIO networks; Compatible with PLC-2, PLC-3, PLC-5, and SLC 500 families

Also known as

Allen-Bradley 1791-8BC Module AB Block I/O 1791-8BC 16-Point I/O Module

Replaces / compatible with

This module is part of the 1791 Block I/O series and can replace older or failing units within the same series. It is compatible with Allen-Bradley RIO communication networks.

Technical note

Expert tip

Ensure proper airflow around the module when mounted, especially in vertical orientation, to maintain optimal operating temperature and output current capacity.

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Frequently asked questions

What are the output current ratings for the Allen-Bradley 1791-8BC module?

The Allen-Bradley 1791-8BC module has an output current rating of 500mA @ 60°C in vertical mounting and 250mA @ 60°C in horizontal mounting. Higher current ratings are available at lower temperatures.