Product Overview
The Allen-Bradley 1762-L40BWA is a 40-point MicroLogix 1200 controller from Rockwell Automation. This industrial automation module provides 24 discrete inputs and 16 relay outputs, making it a versatile choice for small to medium control applications. With its compact design and flexible mounting options, the 1762-L40BWA integrates easily into existing systems.
Built to handle demanding environments, the 1762-L40BWA operates on 120-240 Volts AC and supports both sinking and sourcing input configurations. Its relay outputs are rated for 24-125VDC and 120-240VAC, offering reliable switching for a wide range of loads.
Technical Specifications
Below are the key specifications for the Allen-Bradley 1762-L40BWA, ensuring you have accurate data for your engineering decisions.
| Parameter |
Value |
| Manufacturer |
Rockwell Automation |
| Brand |
Allen-Bradley |
| Part Number |
1762-L40BWA |
| Input Power |
120 to 240 Volts AC |
| Number of Inputs |
24 (20 standard 24VDC + 4 fast 24VDC) |
| Input Circuit Type |
24 VDC Sink/Source |
| Number of Outputs |
16 Relay |
| Output Circuit Type |
Relay |
| Relay Contact Rating |
24-125VDC; 120-240VAC |
| Load Current |
10A, minimum |
| Operating Temperature |
0 to 50 °C |
| Ambient Operating Temp |
0 to 55 °C |
| Operating Frequency |
47 to 63 Hz |
| Power Supply Usage |
82 VA |
| Inrush Current |
120V ac: 25A for 8 ms; 240V ac: 40A for 4 ms |
| Mechanical Cycles |
20,000,000 |
| Dimensions (H x W x D) |
90 mm x 160 mm x 87 mm (104 mm with DIN latch open) |
| Shipping Weight |
2.4 pounds |
| UPC |
10612598207234 |
Industry Applications
The 1762-L40BWA excels in applications requiring discrete control and reliable relay switching. Typical uses include:
- Conveyor system control – manage motor starters and sensors with the 24 VDC inputs and relay outputs.
- Packaging machinery – sequence operations with fast 24VDC inputs for precise timing.
- Material handling – interface with photo eyes and limit switches, switching 120/240VAC loads directly.
In each scenario, the 1762-L40BWA delivers robust performance, reducing downtime and improving throughput.
Installation & Setup
Mount the 1762-L40BWA on a DIN rail or panel using the integrated latch. Ensure adequate clearance for wiring and airflow. Connect 120-240VAC power to the input terminals, and wire field devices to the 24VDC inputs (sink or source configuration) and relay outputs. For serial communication, use the built-in 8-pin Mini DIN RS232 port.
Always install the controller in an enclosure that protects against dust and moisture, maintaining ambient temperature between 0°C and 55°C.
Maintenance & Reliability
With a mechanical life of 20,000,000 cycles, the relay outputs of the 1762-L40BWA offer long service life. Regularly inspect wiring connections and verify that the enclosure temperature stays within limits. Clean the unit periodically to prevent dust buildup, ensuring optimal heat dissipation.
Compatibility & Integration
The 1762-L40BWA includes an integrated 8-pin Mini DIN RS232 port supporting DH-485, DF1 Full and Half Duplex, Modbus Master/Slave, and ASCII protocols. This allows seamless integration with HMIs, SCADA systems, and other PLCs. Use converters like 1761-NET-AIC for DH-485 network bus connectivity.
Selection Guide
Before purchasing, verify that the 1762-L40BWA meets your I/O count and voltage requirements. Ensure your power supply matches the 120-240VAC input. For reliable sourcing, consider PLC Source PRO as your trusted supplier for genuine industrial automation parts.