1766-L32AWA Allen-Bradley MicroLogix 1400 PLC Controller

Product Overview

The Allen-Bradley 1766-L32AWA is a MicroLogix 1400 controller from Rockwell Automation. It integrates 20 digital 120V AC inputs and 12 relay outputs. This compact PLC includes three communication ports: an isolated RS232/RS485 combo, a non-isolated RS232, and an Ethernet port. It supports protocols like DF1, Modbus RTU, DNP3, and Ethernet/IP. The controller has 20 KB memory for user programs and a built-in real-time clock. Its power supply works with 110-240V AC. This model is ideal for small automation applications needing mixed I/O and network connectivity.

Application Scenarios

Use this controller for machine-level control, packaging lines, and material handling systems. Its Ethernet port enables connection to HMIs and SCADA systems. Serial ports allow communication with drives and sensors. The relay outputs can switch AC loads directly. You can deploy the 1766-L32AWA in clean industrial environments for reliable, cost-effective automation. Common sectors include food processing, automotive assembly, and water treatment.

Technical Specifications

Inputs: 20 digital 120V AC. Outputs: 12 relay. Total I/O: 32 points. Memory: 20 KB. Power: 100-240V AC, 100 VA. Communication ports: one RS232/RS485 isolated combo, one isolated RS232, one Ethernet. Mounting: panel or DIN rail. Dimensions: 90 x 180 x 87 mm. Weight: 2 lbs. Operating temperature: 0-55°C. Supported protocols: Serial: DF1, ASCII, Modbus RTU, DNP3, DH485. Ethernet: Ethernet/IP, DNP3, Modbus TCP/IP. You can expand I/O with up to seven 1762 modules. The controller includes a real-time clock for time-based control.

Installation & Maintenance Guide

Mount the controller on a panel or DIN rail. Ensure the environment is clean and dry. Connect power to the 120/240V AC terminals. Wire inputs and outputs according to the manual. Use shielded cables for communication ports. The controller automatically detects memory modules. Remove or insert memory modules with power off to avoid data loss. Perform routine checks on connections and power supply. The open enclosure requires overvoltage category II conditions.

Packing List

The package includes the 1766-L32AWA controller unit and the user manual. For a complete list of accessories, refer to the official Rockwell Automation documentation. The controller ships with a memory module slot cover installed.