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SKU: 1762-L40BWA

Allen-Bradley MicroLogix 1200 1762-L40BWA 40-Point PLC Controller

The Allen-Bradley 1762-L40BWA is a 40-point MicroLogix 1200 controller featuring 24V DC inputs and 16 relay outputs. Powered by 120/240V AC, this compact PLC supports high-speed counters and flexible RS-232 communications, making it a reliable solution for sophisticated machine control and industrial automation projects.

Product Description

The Allen-Bradley 1762-L40BWA serves as a high-performance central processing unit within the MicroLogix 1200 family, specifically engineered to bridge the gap between basic micro-controllers and full-scale modular systems. This unit provides a comprehensive control solution by integrating a high-density I/O count into a compact, rail-mountable chassis. It features a versatile 40-point configuration that supports complex machine sequences while maintaining a small footprint in electrical cabinets.

Regarding its hardware architecture, the controller utilizes 24V DC discrete inputs that can be wired in either sinking or sourcing configurations. Among these, four inputs are designated as high-speed channels, which are essential for interfacing with pulse generators or high-frequency sensors. The output section consists of 16 robust relay contacts, which provide the flexibility to switch various AC and DC loads up to 240V AC or 125V DC. Furthermore, the 1762-L40BWA operates on a universal 120/240V AC power supply, ensuring compatibility with standard industrial power grids globally.

In terms of connectivity, the integrated RS-232 communication port facilitates seamless data exchange through multiple industry-standard protocols. Consequently, engineers can implement this controller in Modbus Master/Slave environments or integrate it into DH-485 networks using appropriate interface converters. Because the MicroLogix 1200 series supports field-expandable I/O, this specific model can scale alongside growing production requirements by adding up to six 1762 expansion modules. This scalability ensures that the initial investment remains viable even as system complexity increases.

Technical Characteristics

  • Manufacturer: Rockwell Automation / Allen-Bradley
  • Input Voltage: 100V AC to 240V AC (47–63 Hz)
  • Total I/O Count: 40 Points
  • Discrete Inputs: 24 points (24V DC Sink/Source)
  • High-Speed Inputs: 4 channels (up to 20 kHz)
  • Relay Outputs: 16 points (Individually isolated or grouped)
  • Communication Port: Non-isolated RS-232 (8-pin Mini-DIN)
  • Supported Protocols: DF1, DH-485, Modbus RTU, ASCII
  • Memory Capacity: 6KB (Configurable for program and data)
  • Operating Temperature: 0°C to 55°C (32°F to 131°F)
  • Mounting Options: DIN Rail or Screw Mounting
  • Mechanical Durability: Up to 20 million cycles for relay contacts