Allen-Bradley 1771-IAN Digital AC/DC Input Module 32 Inputs

Product Overview

The Allen-Bradley 1771-IAN is a digital input module for PLC 5 systems. It has 32 inputs in 4 sets of 8. The voltage category is 120 V AC/DC. This module converts AC signals from user devices to logic levels. It directly controls bits in the PLC data table. It interfaces with pushbuttons, limit switches, and motor starters. The module has a modular design that saves space. It comes with a 1771-WN wiring arm for easy replacement. You do not need to disconnect wiring. The module has 32 red status indicators on the front panel. It includes optoelectrical isolation to protect circuits. It also has input filtering to reduce electrical noise. This is a Series A module. It supports ½ and 1-slot I/O addressing.

Application Scenarios

The 1771-IAN works in many industrial automation settings. It is used in manufacturing plants, process control, and packaging. It connects to on/off sensors and actuators. It monitors limit switches, pilot lights, and motor starters. The module handles AC signals from pushbuttons and annunciators. It is ideal for factory floors, assembly lines, and material handling. It provides reliable input detection in harsh environments. The module integrates with PLC processors in 1771 I/O chassis. It helps control machinery and production lines. Its design allows quick module swaps without rewiring.

Technical Specifications

1771-IAN specifications: Digital AC/DC input module, 32 inputs (4 sets of 8). Voltage category 120 V AC/DC. AC operating voltage 85-138 V. Backplane current 280 mA. Max AC off-state current 3.0 mA. Max DC off-state current 0.8 mA. Typical AC signal delay on: 10 ms (±7), off: 20 ms (±15). Power dissipation 7 W. Thermal dissipation 24.1 BTU/hr. Dimensions 3.5 x 6.5 x 2.0 in (89 x 165 x 51 mm). Weight 0.68 kg. Wiring arm 1771-WN. Keying bands between pins 20-22 (upper) and 16-18 (lower).

Installation & Maintenance Guide

Install the 1771-IAN in a 1771 I/O chassis. Place keying bands correctly to ensure right slot. The module fits with ½ or 1-slot addressing. Use the 1771-WN wiring arm to connect wires. You can remove the module without detaching cables. This reduces downtime. Regularly check the red status indicators on the front panel. They show input status. Keep the module free from dust and moisture. Ensure proper ventilation to avoid overheating. The module requires minimal maintenance. It has built-in isolation and filtering for reliability.

Packing List

Each package includes one 1771-IAN module. It also includes the 1771-WN wiring arm. A user manual may be provided. No other accessories are included. Shipping is done via FedEx, UPS, or DHL. The module is carefully packed for safe delivery.