Product Summary
The Allen-Bradley 1766-L32BWAA is a compact MicroLogix 1400 controller. It integrates 38 I/O points and three communication ports. This unit operates on 120-240V AC power.
Why Upgrade to the Allen-Bradley 1766-L32BWAA?
The 1766-L32BWAA delivers a powerful solution for demanding industrial applications. It combines a high-function CPU with embedded I/O. This controller replaces older MicroLogix 1100 models.
Integrated I/O and Memory
This controller features 20 digital inputs for 120V AC signals. It also includes 4 analog inputs and 12 relay outputs. The analog channels use a 12-bit resolution for precise measurement. Its memory totals 20 KB for user programs and data. The battery-backed RAM protects your logic during power loss.
Powerful Communication Options
You get an isolated RS-232/485 port and a non-isolated RS-232 port. An Ethernet port enables EtherNet/IP and Modbus TCP/IP connectivity. This allows the controller to link with HMIs, drives, and SCADA systems. The built-in web server supports remote monitoring and email alerts.

How to Select the Right Controller
Choosing the correct PLC model simplifies your project. The 1766-L32BWAA serves applications needing mixed I/O types. Compare this model to the 1766-L32AWA for specific AC input needs.
Key Specifications for Procurement
Check the operating power of 110-240V AC for your facility. The controller supports 12 fast inputs and 8 normal DC inputs. It expands with up to seven 1762 I/O modules. The dimensions are 3.5 x 7.08 x 3.43 inches with a weight of 2 pounds.
Mounting and Environmental Limits
Mount this unit on a panel or DIN rail in a clean environment. Do not use it in circuits exceeding Over-Voltage Category II. The operating temperature range is standard for industrial cabinets. These factors ensure reliable long-term operation in your plant.
Expert Technical Evaluation

This controller provides excellent signal processing for automation tasks. It handles up to 6 embedded 100 kHz high-speed counters. The real-time clock supports accurate time-based control sequences.
Performance and Reliability
The Ethernet port supports DNP3 protocol for utility applications. The serial ports handle DF1, Modbus RTU, and DH485 protocols. This versatility makes the 1766-L32BWAA a strong choice for system integration. The 20 KB memory provides stable storage for complex logic.
Deep-Dive Technical FAQ
1. How do I power the 1766-L32BWAA controller?
Connect a power supply rated for 120 to 240 volts AC. The controller consumes 120 VA of power. The inrush current is 25 A at 120V AC for 8 ms. Use a dedicated circuit for best performance.
2. What serial protocols does this model support?

The controller supports DF1, ASCII, Modbus RTU, DNP3, and DH485. These protocols run on the isolated RS-232/485 port. The non-isolated port typically uses DF1 or ASCII. This allows easy connection to older equipment.
3. Can I expand the I/O on this controller?
Yes, you can add up to seven 1762 expansion I/O modules. This flexibility scales your system for future needs. The maximum analog resolution remains 12-bit for all channels.
4. What is the best way to protect my program?
Use the 1766-MM1 memory module for extra backup storage. This external module prevents corruption from power surges. It allows program transport between different MicroLogix 1400 controllers. You can also use the write-protection feature.
Logistics & Standard Packaging Details
Each purchase includes one Allen-Bradley 1766-L32BWAA controller. You receive the power connector and mounting panel hardware. We do not include the battery or memory module. The package meets standard industrial shipping requirements.
- One (1) 1766-L32BWAA MicroLogix 1400 Controller
- One (1) Removable I/O Connector Set
- One (1) Product Documentation Quick Reference
We offer express delivery shipping for all orders. Our trusted carriers include FedEx, UPS, and DHL. This ensures fast and reliable delivery to your facility.

