Allen-Bradley 1794-IE4XOE2 | Flex I/O Combination Analog Module

Overview

The Allen-Bradley 1794-IE4XOE2 is a Flex IO combination module designed for distributed I/O systems. It integrates four single-ended analog inputs and two single-ended analog outputs, enabling versatile signal handling for process control and industrial automation.

Analog Inputs

The 1794-IE4XOE2 provides four configurable current and voltage input channels. Each channel supports 0–20 mA, 4–20 mA, ±10 VDC, and 0–10 VDC ranges. With a 12-bit unipolar or 11-bit plus sign bipolar resolution, the module ensures precise data acquisition. Its conversion uses a successive approximation method, delivering a 256 μs conversion rate and step responses of 9.4 ms for voltage and 18.2 ms for current.

Analog Outputs

The two analog output channels of the 1794-IE4XOE2 generate 0–20 mA, 4–20 mA, ±10 VDC, or 0–10 VDC signals. Pulse Width Modulation (PWM) is used for digital-to-analog conversion, achieving 0.133% accuracy at full scale for voltage and 0.425% at full scale for current when measured at 25 °C.

Electrical and Power Data

The 1794-IE4XOE2 requires 20 mA of FlexBus current and dissipates 10.2 BTU/hr at a maximum of 31.2 VDC. This efficiency allows reliable operation without excessive thermal stress.

Mechanical and Environmental Specs

Designed for DIN rail mounting, the 1794-IE4XOE2 is compatible with terminal bases including 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TB3T, and 1794-TB3TS. It withstands storage temperatures from –40 to 85 °C, operating shock of 30 g, and vibrations up to 5 g between 10–500 Hz.

Application Benefits

By combining input and output channels in one unit, the 1794-IE4XOE2 reduces panel space requirements while enhancing control flexibility. Its precise conversion, broad signal support, and rugged construction make it ideal for distributed control systems in demanding industrial environments.