Allen Bradley 1771-IFE Analog Input Module 1771IFE

Description:

The Allen Bradley 1771-IFE Analog Input Module is used in PLC-5 industrial control systems for converting analog signals into digital data for processing. Commonly installed in Allen-Bradley 1771 I/O chassis within PLC-5 systems used in process control, manufacturing, and automation environments. Maintenance teams, OEMs, and system integrators use this module for system monitoring, retrofit, or replacement of legacy analog input modules.

Applications:

The Allen Bradley 1771-IFE is designed for industrial process monitoring applications requiring accurate acquisition of analog signals such as pressure, temperature, flow, and level. It is widely used in manufacturing plants, water and wastewater facilities, and process industries where sensors transmit voltage or current signals (e.g., 4–20 mA). The module supports both single-ended and differential inputs, enabling flexible integration with field instruments and ensuring reliable data acquisition for control systems.

Technical Specifications:

• Manufacturer: Allen-Bradley (Rockwell Automation)
• Model / Part Number: 1771-IFE
• Product Type: Analog Input Module
• Series: 1771 PLC-5 I/O
• Number of Inputs: 16 single-ended or 8 differential
• Input Types: Voltage and current (e.g., ±10V, 0–10V, 4–20 mA)
• Resolution: 12-bit digital resolution
• Input Ranges: Multiple selectable ranges per channel
• Module Slot: Single slot in 1771 I/O chassis
• Isolation Voltage: Up to 1500V transient
• Power Dissipation: Approx. 3.75 W
• Configuration: Jumper-selectable input type (voltage/current, single/differential)
• Data Transfer: Block transfer (BTW/BTR instructions)
• Lifecycle Status: Discontinued (May 31, 2017)

Common Replacements:

• Allen Bradley 1771-IFEK
• Allen Bradley 1756-IF8 (ControlLogix)
• Allen Bradley 1769-IF4 (CompactLogix)