80026-044-02-R | Allen Bradley | ControlLogix Power Supply Replacement Board

Product Overview

The Allen Bradley 80026-044-02-R functions as a critical internal power regulation board designed for the ControlLogix hardware ecosystem. This component manages voltage conversion and distribution across the backplane, ensuring that processor and I/O modules receive stabilized DC power. We provide this unit as 100% Brand New original equipment, offering a direct replacement path for failed power stages without requiring the replacement of the entire chassis or power supply housing.

Technical Specifications

Engineering Advantages

• Optimized Thermal Management: The 80026-044-02-R utilizes high-grade capacitors and heat-dissipating traces to manage the intense thermal loads typical of fully-populated 17-slot chassis. This design prevents localized hotspots that cause premature component aging.

• Superior EMI Suppression: Integrated filtering circuitry protects sensitive PLC logic from electromagnetic interference and line noise. This ensures that transient spikes from heavy industrial machinery do not corrupt the data flowing through the ControlLogix backplane.

• Precision Voltage Tracking: The board maintains extremely tight tolerances on the 5.1V DC rail. By delivering consistent voltage, it prevents "Major Fault" errors in the CPU that often stem from minor power fluctuations in aging power supplies.

• Rapid Component-Level Repair: Utilizing this specific part number allows maintenance teams to perform board-level swaps within the power supply enclosure. This approach restores system functionality at a fraction of the cost of a complete 1756-PA72 or PB72 module replacement.

FAQs

• Is the 80026-044-02-R compatible with both AC and DC power supplies?

  This board serves specific revisions of the ControlLogix power supply line. You must verify the internal part number of your existing assembly to ensure the header pins and mounting holes align perfectly with your 1756 power supply housing.

• Does this board require software configuration?

  No. The 80026-044-02-R is a pure hardware power stage. Once installed correctly, it automatically regulates the backplane voltages according to the hardware-defined parameters.

• What is the primary cause of failure for this board?

  In most industrial environments, electrolytic capacitor wear due to high ambient temperatures or excessive ripple current from the main line causes failure. Replacing the board with this 100% Brand New unit resets the service life of your power system.

• What safety precautions are necessary during installation?

  Ensure all primary power is disconnected for at least 10 minutes before opening the power supply housing to allow internal high-voltage capacitors to discharge fully. Always use an ESD-safe workstation during the swap.