1794-IB32 Allen-Bradley | 32-Point Discrete Input 24V DC

Allen-Bradley 1794-IB32 FLEX I/O 32-Point 24V DC Digital Input Module

Product Overview

The 1794-IB32 is a high-density digital input module from the Allen-Bradley FLEX I/O family, designed to provide 32 discrete sinking input channels in a compact, modular footprint. By utilizing the 1794-IB32, engineers can interface a large volume of field sensors—such as proximity switches, limit switches, and push buttons—to a central PLC via a FLEX I/O adapter (EtherNet/IP, ControlNet, or Remote I/O). This module is particularly effective in space-constrained control panels where high point-counts are required without the bulk of traditional rack-based I/O. Note: While some internal documentation may reference "DB32," the industry-standard high-density input part number is 1794-IB32.

Technical Specifications

The 1794-IB32 is engineered for high-performance signal acquisition with robust isolation between field and system logic.

• Manufacturer: Rockwell Automation / Allen-Bradley

• Model Number: 1794-IB32

• Product Line: FLEX I/O

• Number of Inputs: 32 Channels

• Input Type: Digital Sinking (Current Sinking)

• Nominal Input Voltage: 24V DC

• Input Voltage Range: 10V DC to 31.2V DC

• Nominal Input Impedance: 22.2 kΩ

• FlexBus Current: 25 mA @ 5V DC

• Isolation Voltage: 50V continuous (Basic Insulation); tested at 2121V DC for 2 seconds

• Isolation Type: Between field side and system (No isolation between individual channels)

• Power Dissipation: Max 6.0 W @ 31.2V DC

• Thermal Dissipation: Max 20.47 BTU/hr @ 31.2V DC

• Status Indicators: 32 Yellow LED indicators (field side)

• Compatible Terminal Bases: 1794-TB32, 1794-TB32S, 1794-TB62DS, 1794-TB62EXD4X15

• Operating Temperature: 0°C to +55°C (32°F to 131°F)

• Dimensions (LxWxH): 6.9cm x 9.4cm x 9.4cm (2.7 x 3.7 x 3.7 in)