1791-0B32 | Allen-Bradley DC Output Block - Petro Auto Tech

Product Overview

The 1791-0B32 is a DC output block from Allen-Bradley, part of the 1791 Block I/O series. It provides 32 output channels and operates at 24V DC. This module integrates a programmable controller interface, power supply, and I/O connections, making it a cost-effective solution for remote I/O applications. It is compatible with PLC-2, PLC-3, PLC-5/250, PLC-5, and SLC 5/02 controllers.

Technical Specifications Analysis

The 1791-0B32 features an output voltage range of 10-30V DC and requires an external power supply of 19.2-30V DC. It delivers a minimum on-state current of 1mA per output and a maximum on-state voltage drop of 1V at rated current. Output signal delay is 0.5ms on and 1.0ms off. The module has zero inputs and 32 outputs per block. It uses Universal Remote I/O communication for distributed I/O.

Application Scenarios & Usage Methods

This block I/O module suits packaging lines, material handling systems, and operator interface panels. In a packaging application, connect the 32 outputs to actuators or solenoids for precise control. For material handling, use the module to manage conveyor belt motors or diverters. The 1791-0B32 can be mounted vertically for optimal cooling or horizontally with adequate ventilation.

Installation Guide & Packing List

Mount the module vertically whenever possible. If horizontal mounting is necessary, ensure sufficient space for air cooling. Use 2.0 mm² (14 AWG) solid wire with maximum insulation of 3/64 in. for connections. The module includes removable terminal strips for easy wiring and replacement. The package typically contains the 1791-0B32 module, labels for identification, and documentation.

Purchasing Advice

When selecting the 1791-0B32, verify your system voltage matches the 24V DC nominal and that your controller is compatible with the 1791 Block I/O series. This module is ideal for expanding output capacity in remote locations. Petro Auto Tech offers this genuine Allen-Bradley part with reliable sourcing and fast delivery.

Repair & Maintenance Tips

Regularly inspect the module for dust buildup and ensure ventilation openings remain clear. Check terminal connections for tightness and signs of corrosion. The internal fuse protects against overcurrent; if the module stops working, test the fuse first. Store the module in a dry, static-free environment when not in use.

Frequently Asked Questions (FAQs)

Q: What is the output voltage range of the 1791-0B32?

A: The output voltage range is 10-30V DC.

Q: How many outputs does this module have?

A: It has 32 outputs per block.

Q: What is the minimum on-state current per output?

A: The minimum on-state current is 1mA per output.

Q: Can this module be mounted horizontally?

A: Yes, but ensure adequate ventilation for air cooling.

Q: What wire size is recommended for connections?

A: Use 2.0 mm² (14 AWG) solid standard wire.