1762-L40BXBR | Allen-Bradley MicroLogix 1200 PLC Supplier

Introduction to the 1762-L40BXBR Programmable Controller

When your application demands reliable control in a compact form factor, the 1762-L40BXBR from Allen-Bradley delivers. Part of the MicroLogix 1200 series, this programmable controller integrates 40 I/O channels to manage micro and small automation tasks across industries. Its 24VDC power supply and robust communication options make it a versatile choice for engineers seeking a proven solution.

Key Features and Technical Specifications

• Manufactured by Rockwell Automation under the Allen-Bradley brand.
• Inputs: twenty 24VDC inputs and four fast 24VDC inputs.
• Outputs: eight relay, seven 24VDC FET, and one high-speed 24VDC FET output.
• Relay contact rating: 24-125VDC and 120-240VAC.
• Mechanical cycles: 20,000,000.
• Minimum load current: 10A.
• Communication ports: one 8-pin mini-DIN serial port and one programming port.
• Supported protocols: DF1, DH-485, ASCII, and MODBUS.
• Dimensions: height 90 mm (104 mm with DIN latch open), width 160 mm, depth 87 mm.
• Shipping weight: 2.4 pounds.
• Ambient operating temperature: 0 to 55 degrees Celsius.
• Power supply usage: 82 VA.
• Power supply inrush current: 120V AC at 25A for 8 ms; 240V AC at 40A for 4 ms.
• Inrush input currents: 150A at 30 seconds.
• Power consumption: 40 Watts.
• Output currents: 600mA at 5 Volts DC and 500mA at 24 Volts DC.
• Heat dissipation: 27.9 Watts.
• Operating temperature: 32 to 131 degrees Fahrenheit.
• Weight: 1.1 kilograms.
• Operating shock: 30 G.
• Vibration: 5G at 10 to 500 Hertz.

One distinctive spec is the 20,000,000 mechanical cycles of the relay outputs. This high endurance reduces replacement frequency, lowering total cost of ownership in high-cycle applications.

Applications and Use Cases

The 1762-L40BXBR suits micro and small automation systems in manufacturing, packaging, and material handling. Its 40 I/O channels handle discrete control tasks like conveyor sequencing and machine interlocking. The built-in communication ports enable connection to HMI and SCADA systems, making it ideal for distributed control architectures. Furthermore, the fast inputs and high-speed FET output support precise timing for applications such as counting or positioning.

Installation and Setup

Mount the 1762-L40BXBR on a panel or DIN rail using the integrated latch. Ensure ambient temperature stays between 0 and 55 degrees Celsius for reliable operation. Connect the external 24VDC power supply to the controller, observing polarity and using a minimum load current of 10A per relay output. For communication, use the 8-pin mini-DIN serial port with DF1 protocol for initial programming. Add up to six 1762 expansion I/O modules to increase channel count as needed.

Maintenance and Reliability

Routine inspection of the relay contacts and FET outputs ensures long service life. The relay outputs are rated for 20,000,000 mechanical cycles, so periodic verification of switching performance is recommended. Keep the controller within its operating temperature and humidity ranges (5% to 95% non-condensing) to avoid thermal stress. The 30 G shock and 5G vibration ratings make it suitable for industrial environments with moderate mechanical stress.

Compatibility and Integration

This controller supports DF1, DH-485, ASCII, and MODBUS protocols through its embedded 8-pin mini-DIN serial port. It integrates with Rockwell Automation's MicroLogix ecosystem and can communicate with HMI panels, SCADA systems, gateways, and intelligent electronic devices. The programming port allows direct connection to a PC for configuration using Rockwell software.

Frequently Asked Questions

Q: What is the power supply requirement for the 1762-L40BXBR?

A: The controller requires an external 24VDC power supply.

Q: How many inputs and outputs does the 1762-L40BXBR have?

A: It has twenty 24VDC inputs, four fast 24VDC inputs, eight relay outputs, seven 24VDC FET outputs, and one high-speed 24VDC FET output.

Q: What communication protocols does the 1762-L40BXBR support?

A: It supports DF1, DH-485, ASCII, and MODBUS protocols.

Q: What is the operating temperature range for this controller?

A: The ambient operating temperature is 0 to 55 degrees Celsius (32 to 131 degrees Fahrenheit).

Q: Can the 1762-L40BXBR be expanded with additional I/O?

A: Yes, it supports up to six 1762 expansion I/O modules.

Product Support and Availability

The 1762-L40BXBR is in stock and ready to ship from Petro Auto Tech. Contact our team for current lifecycle status and availability before ordering.