Allen-Bradley 1791-32A0 Series B 32 Input AC Block I/O Module

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Allen-Bradley 1791-32A0 Series B 32 Input AC Block I/O Module 

Product Overview

The Allen-Bradley 1791-32A0 Series B is a 32-channel AC input block I/O module designed for industrial automation systems. It provides 120V AC discrete input capabilities, supporting Remote I/O (RIO) communication for distributed I/O architectures. This module is ideal for applications requiring high-density input monitoring in harsh industrial environments .

Key Features

1. High-Density Input Configuration

   • 32 discrete AC input channels, divided into 4 groups of 8 channels each .

   • Input voltage range: 79–132V AC (47–63 Hz), with a nominal voltage of 120V AC .

2. Robust Industrial Design

   • Isolation ratings:

     • 1250V AC (I/O group-to-group and I/O-to-logic isolation) .

     • 500V AC (RIO communication port isolation) .

   • Operating temperature: 0–60°C, with storage tolerance of -40–85°C .

3. Remote I/O (RIO) Communication

   • Supports RIO protocol for distributed I/O architectures .

   • Compatible with PLC-2, PLC-3, PLC-5, and SLC 5/02 controllers .

4. Diagnostics & Status Monitoring

   • LED indicators for communication and I/O status .

   • Switch-configurable settings for I/O group addressing and communication rate .

5. Easy Installation & Maintenance

   • DIN rail or panel mounting .

   • Removable terminal blocks for simplified wiring .

Technical Specifications

Applications

• Motor control centers (MCCs) for monitoring contactor/relay status .

• Conveyor systems for input signal processing .

• Industrial machinery requiring distributed I/O monitoring 

The structure and details of the product：

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