Overview
The Allen-Bradley 1766-L32BWA is a 32-point MicroLogix 1400 programmable controller designed for flexible, space-constrained automation environments. This compact embedded I/O controller combines 20 digital inputs, 12 relay outputs, and integrated Ethernet and serial connectivity in a single DIN-rail mounted unit. Ideal for material handling, packaging equipment, HVAC systems, water/wastewater treatment, and building automation, the 1766-L32BWA delivers reliable process control without requiring external I/O expansion modules for basic applications.
Key Features
- Embedded I/O: 12 fast 24V DC inputs, 8 normal 24V DC inputs, 12 relay outputs—no I/O modules required for many applications
- Dual Communication Ports: 1 EtherNet/IP port (RJ45) and 1 RS-232/RS-485 port (8-pin mini DIN) for network and device-level integration
- Program Memory: 10 KB user program memory, plus 10 KB data memory and 128 KB data logging capacity
- Built-in LCD Display: Real-time monitoring, bit/integer manipulation, and status display without external HMI
- Expandable Architecture: Supports up to seven 1762 MicroLogix expansion modules for up to 256 additional discrete I/O points
- Wide Input Voltage: 100–240V AC, 47–63 Hz operation for global deployment
Technical Specifications
- Power Supply Input: 100–240V AC, 47–63 Hz
- Power Consumption: 120 VA (Series A), 150 VA (Series C)
- Inrush Current: 25 A @ 120V AC (8 ms); 40 A @ 240V AC (4 ms)
- Digital Inputs: 12 fast 24V DC (5–48 ms selectable), 8 normal 24V DC; sink/source selectable
- Relay Outputs: 12 channels; dry-contact, 2 A per contact at 30V DC or 120V AC
- Communication: 1× EtherNet/IP (RJ45), 1× RS-232/RS-485 (8-pin mini DIN)
- Memory: 10 KB user program; 10 KB data memory; 128 KB data logging; 64 KB recipe
- Operating Temperature: −20 to +60 °C
- Storage Temperature: −20 to +70 °C
- Humidity: 5–95% (non-condensing)
- Enclosure Rating: IP20
- Mounting: DIN rail or panel mount
- Display: Built-in LCD with backlight; keypad (Up, Down, Left, Right, ESC, OK)
- Battery: Lithium backup for real-time clock and retentive memory
Typical Applications
- Material handling and conveyor systems
- Packaging machinery and filling lines
- HVAC and building automation
- Water and wastewater treatment plants
- Manufacturing process control
- Production line monitoring and sequencing
- Environmental chamber control
- Small-scale industrial equipment
Compatibility & Replacements
Compatible With
- Rockwell Automation FactoryTalk View (SCADA)
- EtherNet/IP industrial network
- Modbus RTU and ASCII protocols (via serial port)
- DNP3 protocol support
- DF1 and DH-485 communication protocols
- 1762 MicroLogix Expansion I/O Modules (up to 7 modules; 256 discrete I/O)
- Allen-Bradley CompactLogix and ControlLogix systems (via EtherNet/IP)
Replaces / Drop-In Replacement For
- 1766-L32AWA (earlier Series A analog input variant)
- 1766-L32AWAA (Series A with dual analog)
- 1766-L32BWAA (Series B predecessor)
- 1766-L32BXB (Series B higher-capacity variant)
Works With
- RSLogix Micro Compiler (legacy) for program development
- Rockwell Automation Studio 5000 Logix Designer (current standard)
- Connected Components Workbench (CCW) for simplified programming
- EtherNet/IP scanners and adapters
- Modbus masters and DNP3 control centers
- 1762 I/O Expansion Module family for discrete and analog I/O expansion
