Overview
The Allen-Bradley 1766-L32AWA is a compact, reliable PLC in the MicroLogix 1400 Series B family, designed for small to mid-scale industrial automation, process control, and sequencing applications. With 20 digital 120V AC inputs, 12 relay outputs, and flexible AC power supply (110–240V), this controller delivers enterprise-level control in a space-efficient package suitable for machinery, HVAC systems, pump stations, and packaging lines.
Key Features
- 20 digital 120V AC inputs and 12 relay outputs for versatile I/O control
- Dual AC power supply: 110–240V AC operation for global deployment
- Built-in Ethernet port with Web server, email, and DNP3 protocol support
- Isolated RS-232/485 and non-isolated RS-232 communication ports for multi-protocol connectivity
- Built-in LCD display with backlight for real-time monitoring and configuration
- Embedded real-time clock (RTC) for time-based and scheduled control logic
- Expandable architecture: supports up to seven 1762 expansion I/O modules for 256 additional discrete I/O points
- Online editing capability and battery-backed RAM for program retention during power loss
Technical Specifications
See specs table below for detailed electrical, dimensional, and operational parameters.
Typical Applications
- Pump Station Control: Sequence multiple pumps, monitor high/low sensor levels, and transmit alerts via Ethernet to SCADA systems
- Packaging Lines: Control conveyors, fillers, and labeling equipment with safety interlocks; connect barcode readers and scales via serial ports
- HVAC Systems: Manage fan motors, valve actuators, and building-wide control communication over Ethernet
- Conveyor & Sorting: Drive motors and manage proximity/distance sensors for presence detection and alarm signaling
- General Machine Control: Embedded sequential operation control, safety circuits, manual overrides, and operator panel/HMI integration
Compatibility & Replacements
Compatible With
- RSLogix 500 and RSLogix Micro (Version 8.1 and above) for program development and online editing
- Rockwell Automation FactoryTalk View for supervisory SCADA monitoring
- Allen-Bradley 1762 MicroLogix Expansion I/O modules (up to seven units)
- EtherNet/IP networks and Ethernet-based SCADA systems
- Third-party MODBUS, DNP3, and ASCII protocol devices via serial or Ethernet connectivity
Replaces / Drop-In Replacement For
- 1766-L32AWAA (120V AC input version; verify wiring before substitution)
- Equivalent compact PLCs in the MicroLogix 1100 series may require configuration changes and do not provide direct drop-in compatibility
Works With
- RSLogix 500 and RSLogix Micro programming environments
- Rockwell FactoryTalk View and Wonderware InTouch SCADA platforms
- EtherNet/IP and MODBUS TCP for industrial networking
- Third-party HMI and operator interface panels via Ethernet or serial protocols
- Email notification and Web server functionality for remote monitoring and diagnostics
