Allen-Bradley MicroLogix 1400 Controller PLC 1766-L32BXB

Allen‑Bradley 1766 Series (MicroLogix 1400) – Product Description

The Allen‑Bradley 1766 series, known as the MicroLogix 1400 programmable logic controller (PLC), is a compact, high‑performance controller from Rockwell Automation. It combines the capabilities of the MicroLogix 1100 with enhanced I/O handling, offering a flexible and reliable solution for small‑ to medium‑sized industrial automation applications.

A distinctive feature of this series is its built‑in LCD display with backlight and keypad. Users can directly view controller and I/O status, configure Ethernet network settings, display floating‑point values, and even show an OEM logo at startup – greatly simplifying on‑site commissioning and maintenance. The 1766 series controllers are programmed using RSLogix 500 or RSLogix Micro software.

Main Models and Technical Specifications

The 1766 series offers several models, differentiated primarily by power supply type, I/O count, and whether analog I/O is integrated.

Model Overview:

All models above support I/O expansion via up to 7 expansion modules.

Key Features and Functions

• Powerful processing and expansion – offers fast processing speed and large memory capacity. With up to seven 1762‑series expansion I/O modules, the system can be expanded to 144 I/O points, meeting complex application requirements.

• Flexible communication options – integrates three communication ports, including one RJ45 port for 10/100 Mbps EtherNet/IP supporting peer‑to‑peer messaging, web server, and email functions, plus serial ports supporting DF1, DH‑485, Modbus, DNP3, and other protocols.

• High‑Speed Counters (HSC) – on DC‑input controllers, up to six 100 kHz high‑speed counters are built in, ideal for precision positioning and speed measurement applications.

• Online editing – allows modification of ladder logic programs while the PLC is running, without stopping operation.

• Rugged design:

  • Wide temperature operation – stable from –20 °C to +60 °C.

  • Compact dimensions – only 87 x 180 x 90 mm (W x H x D), suitable for space‑constrained installations.

  • Environmental suitability – rated for industrial environments, pollution degree 2, overvoltage category II. Some models are suitable for Class I Division 2 hazardous locations.

• Real‑time clock and memory – built‑in RTC for event logging and time‑stamping. An optional 1766‑MM1 memory module is available for program backup.

• Global certifications – complies with UL, CE and other international standards, and carries Bureau Veritas marine type approval.

Typical Applications

The MicroLogix 1400 1766 series controllers are widely used across various industrial sectors, including but not limited to:

• Material handling and packaging

• General industrial equipment control

• Printing, food & beverage, and pharmaceutical industries

• HVAC and building automation

• Water and wastewater treatment, SCADA systems

• Clutch/brake control, simple position control