OVERVIEW

Official designation: Allen-Bradley 1794-IF4I (Flex I/O, Analog Input Module)

This module provides four individually isolated channels for high-precision analog signal acquisition.

It is configurable for multiple current and voltage input ranges for industrial control systems.

KEY SPECS SUMMARY

Power: 24V DC nominal, 150 mA current max

Interfaces / Ports: 4 differential or isolated inputs

Indicators: One module status LED

Operating Temp: 0 to 55 degrees C

Platform / Compatibility: Flex I/O, requires 1794 terminal base

Limit: 14 bits plus sign resolution

Lifecycle: Active, generally supported

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What are the primary input signal types supported by the 1794-IF4I?

A: It supports isolated current and voltage input types including 4–20 mA.

Wiring & Installation:

Q: Which terminal base is required for field wiring connection to the module?

A: The module must be connected to either the 1794-TB2 or 1794-TB3 terminal base.

Troubleshooting & Compatibility:

Q: Does the module provide isolation between individual channels for noise reduction?

A: Yes, the module features four isolated input channels to reduce ground loop noise.

Replacement & Upgrades:

Q: What is the recommended replacement module for the 1794-IF4I if it is obsolete?

A: Refer to the latest manufacturer manual.