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

Allen-Bradley 1771-IFE PLC-5 Analog Input Module provides 16-channel analog input capability for PLC-5 backplane systems, converting each channel to a 12-bit digital value for the controller. The module supports either 16 single-ended inputs or 8 differential inputs, selectable per module, and accepts voltage or current signals. Voltage ranges include 0–5 V, 1–5 V, ±5 V, and ±10 V, while current ranges cover 4–20 mA, 0–20 mA, and ±20 mA, with configuration via jumpers per the installation instructions. Performance features include 12-bit resolution and channel update timing of 18 ms for 8 channels or 36 ms for 16 channels, with a backplane current draw of 750 mA and no external power required. The 1771-IFE occupies a single slot in a 1771 I/O chassis and is designed for use with PLC-5 systems to interface analog sensors and transmitters—such as 4–20 mA loops or low-level voltage signals—for process monitoring and control.