Allen-Bradley 1768-PA2 CompactLogix 120/240V AC Power Supply

Product Overview

The 1768-PA2 serves as the primary AC power source for the Allen-Bradley CompactLogix 1768 controller system. It converts standard 120V or 240V AC line voltage into the regulated DC power required to drive the controller backplane and attached communication modules. This module supports the high-performance requirements of the 1768-L4x series processors, ensuring consistent logic-side energy delivery. We supply this unit as 100% Brand New and factory-original, guaranteeing peak electrical performance for your mission-critical control architecture.

Technical Specifications

The 1768-PA2 features a robust hardware profile designed to sustain the heavy current demands of integrated motion and complex networking.

Engineering Advantages

• Direct-Link Architecture: The 1768-PA2 mounts directly to the left side of the 1768 controller. This design eliminates the need for external connection cables, reducing potential points of failure and simplifying the overall wiring schematic within the cabinet.

• Universal Frequency Support: The power supply operates across a wide frequency range (47...63Hz). This allows global deployment of the control system, accommodating various international power grid standards without requiring additional voltage stabilization hardware.

• Optimized Thermal Footprint: The 118mm height and compact width facilitate installation in shallow enclosures. Despite its power output, the module utilizes efficient heat dissipation to prevent thermal throttling of the adjacent CPU, even during high-load processing cycles.

• Internal Surge Mitigation: Built-in protection circuitry manages transient line spikes. This prevents electrical noise from reaching the sensitive 1768 backplane, protecting the integrity of your motion control and high-speed data transmission.

FAQs

• Does the 1768-PA2 require a separate mounting base?

  No. The module features integrated locking tabs that secure it directly to the CompactLogix 1768 controller. It shares the DIN rail with the processor, creating a single, rigid assembly.

• Can I use this power supply with 1769-L3x controllers?

  No. The 1768-PA2 specifically fits the 1768-series controllers (such as the 1768-L43 or 1768-L45). Standard CompactLogix 1769 systems use different power supply series, such as the 1769-PA2 or PB2.

• How do I set the input voltage for 120V or 240V?

  The 1768-PA2 features an auto-ranging or switchable input (depending on hardware revision) that handles the 85-265V AC range. Always verify the specific terminal wiring and switch position on your Brand New unit before applying power to ensure compatibility with your local supply.

• What should I check if the status LED remains off?

  Verify the AC input at the terminals. If the supply receives the correct 47-63Hz frequency but the LED stays dark, ensure the module is fully seated and locked into the controller, as the 1768-PA2 must complete the backplane connection to initialize.