1766-L32BXB | Allen-Bradley | MicroLogix 1400 32-Point Programmable Controller

Product Description

The Allen-Bradley 1766-L32BXB is a MicroLogix 1400 controller designed for automation systems requiring a mix of DC inputs, relay outputs, and transistor outputs. With 32 total I/O points, integrated memory, and advanced communication capabilities, it provides flexible control for distributed applications. Operating on 24 VDC power, this controller combines high-speed digital inputs with relay and transistor outputs, making it suitable for both mechanical switching and fast-response tasks.

Key Features

• Manufacturer: Rockwell Automation

• Brand: Allen-Bradley

• Model Number: 1766-L32BXB

• Series: MicroLogix 1400

• Type: Programmable Controller

• I/O Capacity: 32 points (20 inputs, 12 outputs)

• Inputs:

• 12 × fast 24 VDC digital inputs

• 8 × standard 24 VDC digital inputs

• 2 × analog inputs

• Outputs:

• 6 × relay outputs

• 3 × fast 24 VDC transistor outputs

• 3 × standard 24 VDC transistor outputs

• Memory: 20 KB

• Power Supply: 24 VDC

• Operating Frequency: 47–63 Hz

• Power Consumption: 50 W (7.5 W without expansion I/O)

• Inrush Current: 15 A for 20 ms @ 24 VDC

• Resolution: 12-bit

• Communication Ports:

• 1 × RS232/RS485

• 1 × Ethernet

• 1 × RS232

• Supported Protocols:

• Serial: DF1, ASCII, Modbus RTU, DNP3, DH485

• Ethernet: Ethernet/IP, DNP3, Modbus TCP/IP

• Mounting Options: Panel mount or DIN rail

• Weight: 2.06 lbs (≈ 0.94 kg)

• Additional Feature: Built-in real-time clock (RTC)

Application Scenarios

• Process Control Systems: Provides reliable PLC functionality for manufacturing and energy applications

• Mixed Signal Applications: Combines relay outputs for mechanical loads with transistor outputs for fast switching

• Networked Automation: Integrated Ethernet and serial ports allow seamless communication across industrial networks

• Compact Installations: Space-efficient design for panel-mounted or DIN rail enclosures

FAQ

Q: How many I/O points does the 1766-L32BXB support?  A: It provides 32 points, including 20 inputs and 12 outputs.

Q: What communication protocols are supported?  A: DF1, ASCII, Modbus RTU, DNP3, DH485, Ethernet/IP, and Modbus TCP/IP.

Q: Does the controller include a real-time clock?  A: Yes, it has a built-in RTC for time-based operations.

Q: How does it compare to the 1766-L32AWA model?  A: The 1766-L32BXB operates on 24 VDC power with mixed relay and transistor outputs, while the 1766-L32AWA supports AC inputs with relay outputs only.