Allen-Bradley 1791-OA32 High-Density AC Output Block I/O Module

Product Overview

The Allen-Bradley 1791-OA32 is a compact, high-density AC output module from the 1791 Block I/O family. It provides 32 discrete output channels for controlling AC loads like motor starters, solenoids, and indicators. Designed as a slave device for Remote I/O (RIO) networks, it integrates power supply, I/O terminals, and communication interface into a single, cost-effective unit for distributed control applications.

Technical Specifications

• Brand: Allen-Bradley (Rockwell Automation)
• Model: 1791-OA32
• Series: 1791 Block I/O
• Module Type: Digital AC Output Module
• Output Channels: 32 AC Outputs (4 groups of 8)
• Nominal Voltage: 120V AC
• Operating Range: 20V AC to 132V AC
• Max On-State Current: 50 mA per output
• Holding Current: 300 mA max @ 60°C (600 mA @ 30°C vertical mount)
• Surge Current: 10 A for 50 ms (repeatable every 2 sec)
• Switching Speed: OFF→ON: 1.0 ms | ON→OFF: 8.3 ms @ 60 Hz
• Communication: Remote I/O (RIO) Protocol
• Compatible Controllers: PLC-2, PLC-3, PLC-5/20, PLC-5 Series
• Mounting: Vertical or Horizontal
• Operating Temperature: 0°C to 60°C
• Weight: 1.00 lbs (0.45 kg)
• Product Status: Discontinued/Obsolete (Replacement part available)

Installation & Wiring

Mount the module vertically or horizontally as required. Connect 120V AC power to terminals L1 (1), N (3), and GND (2). Connect the Remote I/O network to terminals BLU (6), CLR (8), and SHD (7). Set the I/O rack number using the group switch assembly behind the front cover. Observe derating for current based on mounting orientation and ambient temperature.

System Compatibility

This module is designed for Allen-Bradley Remote I/O (RIO) networks. It is compatible with scanners from the PLC-2, PLC-3, and PLC-5 families, including modules like 1771-SN, 1772-SD, and 1775-S5. It functions as a complete distributed I/O station.

Applications & Notes

Ideal for controlling a bank of AC loads where space is limited. Used with motor starters, solenoid valves, pilot lights, and signaling devices. Please note: This product has reached its end-of-life (obsolete) status from the manufacturer. It is sold as a replacement or spare part for existing systems.

Package Contents & Warranty

• One (1) Allen-Bradley 1791-OA32 AC Output Module.
• Product information sheet.

This obsolete product is sold as-is for replacement purposes and carries a 12-month warranty on functionality from the date of purchase.

Global Shipping

Shipped worldwide via FedEx, UPS, and DHL. Tracking information provided.

© 2025 Ubest Automation Limited. All rights reserved.
Original Source: https://www.ubestplc.com/
Contact: sales@ubestplc.com | Tel: +86180 3000 5825