Allen Bradley 1771-IM Input Module

Core Performance & Industrial Application

The Allen Bradley 1771-IM is an 8-point AC/DC discrete input module for Rockwell 1771 I/O chassis and PLC-5 controller.

It receives 220~240V AC or DC on-site switch signals and converts them into internal logic signal for PLC processing.

It adopts opto-electrical isolation with 1500V isolation voltage to isolate field high voltage and control backplane.

It has built-in input status LED indicators for convenient on-site fault checking and signal status viewing.

It supports stable signal filtering and delay function to suppress transient interference on field circuits.

It is an obsolete spare part, widely used for old PLC-5 control cabinet maintenance and replacement.

Technical Specifications

▶ Product type: Discrete AC/DC input module

▶ Brand: Allen Bradley (Rockwell Automation)

▶ Model: 1771-IM

▶ Number of channels: 8 points

▶ Rated input voltage: 220-240V AC 47-63Hz / 240V DC

▶ Isolation: 1500V AC opto-isolation

▶ Backplane current draw: 75 mA

▶ Mounting: Slot installation in 1771 I/O chassis

▶ Operating temperature: 0℃ ~ +60℃

▶ Protection rating: IP20 inside cabinet

▶ Feature: Status LED, high voltage isolation, signal filtering

▶ Country of origin: USA

▶ Compliance: CE certification

Industry Applications

Applied in power plants, refineries and factory automation PLC-5 control system spare replacement.

Note: Confirm chassis series and input voltage type before ordering