Product Overview

The Allen-Bradley 1756-L63XT is a high-performance Logix5563™ controller specifically engineered for deployment in extreme industrial environments. As part of the ControlLogix-XT™ (Extended Temperature) line, this processor is designed to operate in ambient conditions that would compromise standard automation hardware. It features conformal coating to protect internal circuitry against contaminants and moisture, making it a critical component for oil and gas, mining, and outdoor utility applications.

Equipped with 8 MB of user memory and 478 KB of dedicated I/O memory, the 1756-L63XT manages complex control logic with high execution speeds. The "XT" designation signifies its ability to function within a significantly widened thermal window, supporting a maximum operating range of -25°C to +70°C (-13°F to +158°F). This eliminates the need for expensive enclosure cooling or heating systems in many harsh-duty scenarios.

Extreme Environmental and Mechanical Resilience

The 1756-L63XT is purpose-built for physical durability. It is designed to be paired with XT-specific chassis and power supplies to maintain its extended temperature ratings across the entire system.

• Extended Thermal Range: Maintains full operational integrity from -25°C to 70°C, outperforming the standard 0°C to 60°C range of conventional controllers.

• Corrosion Resistance: Features specialized conformal coating that provides an extra layer of protection against salt spray, humidity, and corrosive gases.

• Advanced Memory Management: Includes 8 MB of built-in volatile memory, with support for non-volatile storage expansion via 1756-CF128 or 1756-CF64 CompactFlash cards to preserve user programs and tag data.

• High Availability Support: Compatible with ControlLogix redundancy systems, allowing for seamless switchover between primary and secondary controllers in mission-critical processes.

Technical Specifications

• Manufacturer: Allen-Bradley (Rockwell Automation)

• Model Number: 1756-L63XT

• Controller Series: Logix5563XT

• User Memory: 8 MB

• I/O Memory: 478 KB

• Digital I/O Max: 128,000 Points

• Analog I/O Max: 4,000 Points

• Backplane Current: 1200 mA @ 5.1V DC; 14 mA @ 24V DC

• Power Dissipation: 3.5 Watts

• Thermal Dissipation: 11.9 BTU/hr

• Communication Port: Integrated RS-232 (DF1, DH-485, Modbus via logic, ASCII)

• Operating Temperature: -25°C to 70°C (-13°F to 158°F)

• Shock/Vibration: 30g Operating Shock; 2g Vibration @ 10-500Hz

• Weight: 0.32 kg (0.71 lbs)

• Dimentions: 3.5x14.2x14.5cm

Connectivity and Network Integration

The 1756-L63XT acts as a central processing hub capable of managing up to 250 simultaneous controller connections. It integrates seamlessly into multi-tier network architectures through the addition of XT-rated communication bridge modules.

• Supported Networks: EtherNet/IP, ControlNet, DeviceNet, Data Highway Plus (DH+), and Remote I/O.

• Multitasking Capabilities: Supports up to 32 separate tasks, including one continuous task and multiple periodic or event-based tasks, for precise execution of prioritized logic.

• Chassis Compatibility: Optimized for use in 1756-A4LXT, 1756-A5XT, 1756-A7LXT, and 1756-A7XT chassis to ensure environmental compliance.