Product Overview

The Allen-Bradley 1762-L40BWA is a compact and powerful programmable logic controller (PLC) from the MicroLogix 1200 series. It provides 40 input/output points, integrating 24 discrete inputs and 16 relay outputs. The **1762-L40BWA** accepts 24 VDC inputs with sink/source wiring flexibility, making it suitable for diverse sensor and switch interfaces. The relay outputs support loads up to 10 A at 24-125 VDC or 120-240 VAC, with a mechanical life of 20 million cycles. This controller includes an integrated 8-pin Mini DIN RS232 communication port that supports DH-485, DF1 full/half duplex, Modbus master/slave, and ASCII protocols. Its robust design ensures reliable operation in industrial environments with ambient temperatures from 0 to 55 degrees Celsius.

Application Scenarios

The **1762-L40BWA** excels in discrete control applications such as packaging lines, material handling, conveyor systems, and machine automation. It is also used in building automation for HVAC control and lighting systems. The controller supports peer-to-peer communication using DF1, ASCII, and Modbus protocols, enabling integration with HMIs, drives, and other PLCs. For networked environments, an external converter like the 1761-NET-AIC allows connection to a DH-485 network. RS232-to-Ethernet or RS232-to-RS485 converters can multiplex the serial port for multi-device communication. This PLC is ideal for small to medium-sized automation tasks where cost efficiency and reliability are critical.

Technical Specifications

• Input Power: 120-240 VAC, 82 VA, inrush 25 A at 120 VAC for 8 ms, 40 A at 240 VAC for 4 ms
• Inputs: 20 standard 24 VDC + 4 fast 24 VDC, sink/source
• Outputs: 16 relay, contact rating 24-125 VDC / 120-240 VAC, 10 A minimum load
• Communication: RS232 (Mini DIN 8-pin) supporting DH-485, DF1, Modbus, ASCII
• Operating Temperature: 0 to 55 degrees Celsius
• Mounting: DIN rail or panel
• Dimensions: Height 90 mm (104 mm with DIN latch open), Width 160 mm, Depth 87 mm
• Shipping Weight: 2.4 pounds (approximately 1.09 kg)

Installation & Maintenance Guide

Mount the **1762-L40BWA** on a DIN rail or directly to a panel using the provided slots. Ensure the enclosure maintains an ambient temperature between 0 and 55 degrees Celsius. Use appropriate climate control devices (heater, fan, or both) as needed. Connect input power to terminals L1 and L2/N, respecting polarity for AC supplies. Wire inputs as sinking or sourcing per device requirements. Relay outputs are form A contacts; do not exceed rated voltage or current. Ground the controller properly through the panel ground connection. For serial communication, use a shielded RS232 cable. When using DH-485, install a 1761-NET-AIC converter. Periodically inspect terminal connections and verify that the enclosure's temperature stays within limits. Replace the unit only with an identical model if faulty.

Packing List

• 1 x Allen-Bradley MicroLogix 1200 Controller 1762-L40BWA
• 1 x Product Documentation (Quick Start Guide)
• 1 x RS232 Communication Cable (8-pin Mini DIN)
• Mounting hardware (screws for panel mount)
• Shipping via Fedex, UPS, or DHL