Allen-Bradley 1791-16B0 16-Point DC Block I/O Module Overview

Product Introduction

When your automation system needs reliable input handling for switches and sensors, the Allen-Bradley 1791-16B0 delivers. This 16-point DC Block I/O module from the 1791 series converts 24 Volts DC input into power usable by connected processors. It supports various devices like pushbutton, float, selector, limit, and proximity switches, making it versatile for many industrial applications.

Technical Specifications Breakdown

The 1791-16B0 operates at 24V DC with a maximum input impedance of 3.4k Ohms. It features 16 inputs per block, allowing multiple signal connections in a compact form. Weighing just 1.00 lbs (0.45 kg), this module is lightweight and easy to install. The built-in power supply and internal protection enhance reliability in demanding environments.

Industry Applications

In manufacturing lines, the 1791-16B0 connects to limit switches to monitor machine positions. For material handling, it interfaces with proximity switches to detect item presence. Its compatibility with PLC-2, PLC-3, PLC-5/250, PLC-5, and SLC controllers ensures seamless integration into existing systems, reducing upgrade costs.

Installation & Setup Guidance

Wiring the 1791-16B0 is straightforward thanks to its removable terminal strip. Unscrew the two captive screws to access connections. Ensure all connected devices match the module's 24V DC and 3.4k Ohm impedance specifications. The programmable controller user interface simplifies navigation and control setup.

Maintenance & Reliability

Routine inspection of the status indicators helps identify issues early. The front cover protects switch assemblies for setting last state and I/O rack number. Periodic checks of terminal strip connections prevent loose wiring. The module's internal protection reduces downtime from power fluctuations.

Compatibility & Integration

The 1791-16B0 works with Allen-Bradley programmable logic controllers including PLC-2, PLC-3, PLC-5/250, PLC-5, and SLC. It functions as a complete I/O interface, combining adapter and rack functionality. This simplifies system design and reduces component count.

Selection Guide & Purchasing Advice

Before purchasing, verify your system's voltage and impedance requirements match the 1791-16B0's 24V DC and 3.4k Ohm specs. Consider the number of inputs needed—this module offers 16 points. For current availability and lifecycle status, contact BluePLC Industrial. They provide genuine Allen-Bradley parts and support for your automation needs.