Allen-Bradley 1791-32B0: High-Density DC Input Module

Core Product Specifications

• Brand & Model: Allen-Bradley 1791-32B0
• Module Type: Discrete DC Input Only
• Total Input Channels: 32 Channels (4 groups of 8).
• Nominal Voltage: 24V DC.
• Operating Voltage Range: 10 to 30 Volts DC.
• On-State Current: 11 mA maximum at 30V DC.
• Off-State Voltage: Maximum 5V DC.
• Input Impedance: 3.4 kΩ maximum.
• Module Power: 19.2-30V DC external supply (300 mA).

Performance & Compatibility Data

• Power Dissipation: 16.3 Watts maximum.
• Thermal Dissipation: 55.6 BTU/hour maximum.
• Isolation Rating: 500V AC (group-to-group, group-to-logic, power to RIO).
• Compatible Outputs: Works with 1771 modules, contactors, and relays.
• Key Rule: Device off-state current must be less than module's minimum off-state current (1.5mA).

What You Receive

• One Allen-Bradley 1791-32B0 Input Module.
• Necessary installation documentation.
• Fast Shipping: Available via FedEx, UPS, and DHL.
• Quality Guarantee: Protected by a 12-month warranty.

Expert FAQs

• What sensors work with the 1791-32B0? It works with standard 10-30V DC sensors like proximity switches and photoelectrics.
• Why is off-state current important for compatibility? If a connected device leaks too much current when OFF, the module may falsely see it as ON.
• Can I use this with 12V DC sensors? Yes, the 10-30V DC range fully supports common 12V and 24V DC sensors.
• How many modules can I connect on one RIO network? You can connect multiple modules, limited by the controller's RIO scanner capacity.
• What is the response time of the inputs? The module responds very quickly, typically within a few milliseconds.

© 2025 Ubest Automation Limited. https://www.ubestplc.com/ All rights reserved.
Author: Ubest Automation
Contact: Email: sales@ubestplc.com Phone: +86 180 3000 5825