Allen-Bradley 1771-IFE 12-Bit Analog Input Module PLC-5

Overview

The 1771-IFE is an Allen-Bradley PLC-5 analog input module engineered to acquire a wide range of voltage and current signals. Compatible with any 1771 I/O chassis, it supports both single-ended and differential channel configurations, offering precise data capture for control and monitoring applications.

Technical Specifications

• Model: 1771-IFE

• Manufacturer: Allen-Bradley

• Module Type: Analog Input Module

• I/O Configuration: 16 single-ended or 8 differential channels

• Input Voltage Range: -10 to +10 VDC

• Input Current Range: -20 to +20 mA

• Channel Update Time / Resolution: 36 ms for 16 single-ended; 18 ms for 8 differential channels

• Data Format: Natural binary or BCD scaling to +9999

• Resolution: 12-bit binary; 12-bit plus sign for bipolar ranges

• Accuracy: ±0.1% full scale at 25°C

• Internal Scan Rate: 25 ms for 16 single-ended inputs, 12.5 ms for 8 differential inputs (without filtering)

• Signal Delays: Typical DC ON delay 10 ms, DC OFF delay 20 ms; AC OFF delay 24 ms

• External Power Required: No

• Backplane Current: 750 mA

• Mounting: Rack mountable

• Slot Width: 1 slot

• Wiring Arm: Compatible with 1771-WG

Features

• Flexible support for single-ended or differential analog signals

• High-speed, 12-bit resolution for accurate measurements

• Seamless integration with PLC-5 chassis systems

• Factory-calibrated for reliable performance without external power

Applications

Designed for process control, industrial monitoring, and analog signal acquisition in manufacturing systems. Suitable for integrating multiple sensor inputs into a PLC-5 environment.

FAQ

Q: How many channels can be used differentially?
A: Up to 8 channels can be configured as differential inputs.

Q: Is external power required?
A: No, the 1771-IFE draws power from the backplane.

Q: What is the resolution of the module?
A: 12-bit for single-ended, 12-bit plus sign for bipolar differential ranges.