Allen-Bradley 1791-0A32 Block I/O Module

Allen-Bradley 1791-0A32 High-Density AC Output Module

Core Technical Specifications

• Brand: Allen-Bradley
• Model: 1791-0A32
• Category: PLC Digital AC Output Module
• Output Channels: 32 AC Outputs
• Channel Grouping: 4 Groups of 8 Channels
• Output Voltage Range: 20-132 VAC
• Nominal Voltage: 120 VAC
• On-State Current per Point: 50 mA
• Output Delay (ON to OFF): 8.3 ms @ 60 Hz / 10.0 ms @ 50 Hz
• Output Delay (OFF to ON): 1.0 ms
• Surge Current Rating: 10 A for 50 ms (repeatable every 2 sec)
• External Power Requirement: 85-132 VAC

Compatibility & Communication

• The 1791-0A32 is compatible with legacy Allen-Bradley controllers including the PLC-2, PLC-3, PLC-5/20, and PLC-5 families.
• It works with specific scanner modules like the 1771-SN, 1772-SD/SD2, and 1775-S5/SR5.
• The built-in adapter functionality eliminates the need for a separate communication card, acting as a complete I/O interface.
• Remote I/O network connections are made via dedicated terminals (BLU, CLR, SHD) on the module's left side.

Mounting & Operational Ratings

• The module supports both vertical and horizontal mounting orientations to fit various panel layouts.
• Vertical Mounting Current Rating: 600 mA total at 30°C / 300 mA total at 60°C ambient temperature.
• Horizontal Mounting Current Rating: 300 mA total at 30°C / 150 mA total at 60°C ambient temperature.
• The operational temperature range is 0 to 60 degrees Celsius (32 to 140°F).
• It features a removable terminal strip for straightforward wiring of power, signals, and network connections.

Frequently Asked Questions (FAQ)

• Q: How many output channels does the 1791-0A32 have, and how are they grouped?
  A: It has 32 output channels, divided into four isolated groups of eight channels for flexible and protected wiring.
• Q: What is the main difference between the 1791-0A32 and other 1791 output modules?
  A: The 1791-0A32 offers double the channel density (32 outputs) compared to the 16-channel versions, in a similar compact footprint.
• Q: Which controllers can communicate with this module?
  A: It is designed for use with Allen-Bradley PLC-2, PLC-3, and PLC-5 series controllers via the Remote I/O (RIO) protocol.
• Q: Can I mount this module in any direction?
  A: Yes, it supports both vertical and horizontal mounting. Note that the total current rating is higher for vertical mounting.
• Q: What is your shipping and return policy?
  A: We ship worldwide via major couriers. All orders come with a standard 30-day return policy for customer satisfaction.

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