Allen-Bradley 314066-A02 PC Power Supply Board – Obsolete PLC-5 Spare Part

Technical Dossier

Product Details And Specifications

Allen-Bradley 314066-A02 PC Power Supply Board – Obsolete PLC-5 Spare Part

The Allen-Bradley 314066-A02 is the PC Power Supply Board used in legacy Rockwell Automation PLC-5 processor and I/O rack assemblies. Rockwell Automation discontinued the PLC-5 product line, and replacement boards of this specific revision are no longer manufactured. DriveKNMS maintains verified inventory of this component, sourced through authorized industrial surplus channels and subject to multi-stage quality inspection before dispatch review.

RFQ support for obsolete parts: Send the model number, required quantity and destination so DriveKNMS can confirm sourcing options before quotation.

Technical Specifications

Note: Electrical parameters for this revision are not publicly documented by Rockwell Automation post-discontinuation. DriveKNMS does not publish unverified specifications. Contact our technical team for confirmed parameter data relevant to your application.

Solving the Discontinued Hardware Crisis

The PLC-5 platform was the backbone of North American and global discrete manufacturing automation from the 1980s through the early 2000s. Automotive assembly lines, chemical batch processing units, water treatment SCADA systems, and paper mill drive controls were all built around PLC-5 processor racks. Many of these installations remain operational today — not out of negligence, but because the cost and risk of migration outweigh the cost of maintenance, provided that spare parts remain accessible.

The 314066-A02 power supply board is a non-negotiable component in this equation. Without a functioning power supply board, the entire rack loses its ability to power processor and I/O modules. There is no software workaround. There is no field-level bypass. The rack goes offline, and so does the process it controls.

Plants running Allen-Bradley PLC-5 systems alongside legacy SCADA platforms such as Rockwell's RSView or older Wonderware InTouch installations will find that sourcing the 314066-A02 is the lowest-risk path to maintaining system integrity without triggering a full control system overhaul.

Condition & Reliability Assurance

Obsolete does not mean unreliable — but it does mean that quality verification must be more rigorous than for current-production parts. DriveKNMS applies a 5-step QA protocol to all legacy power supply boards before dispatch review:

Step 1 – Visual and Physical Inspection: Full board inspection for mechanical damage, burn marks, cracked solder joints, and PCB delamination. Any board with visible physical compromise is rejected at this stage.

Step 2 – Electrolytic Capacitor Assessment: Aging electrolytic capacitors are the primary failure mode in power supply boards stored for extended periods. Each capacitor is assessed for bulging, leakage, and ESR deviation. Boards with suspect capacitors are either recapped or rejected.

Step 3 – Firmware and Revision Verification: The board revision (A02) is confirmed against physical markings and internal identifiers. Mismatched revisions are flagged and not shipped as 314066-A02 equivalents.

Step 4 – Pin and Connector Corrosion Check: All edge connectors and pin headers are inspected under magnification for oxidation and corrosion. Affected contacts are cleaned using approved contact restoration methods or the board is rejected.

Key Features for System Maintenance

The 314066-A02 is a direct drop-in replacement for the original board position within compatible PLC-5 rack assemblies. No firmware re-flashing is required. No re-programming of the processor is triggered by a board swap. No engineering change order is needed for a like-for-like replacement.

Q: How are RFQ terms confirmed?
A: Quantity, required condition, documentation needs, destination and sourcing route are confirmed during RFQ review before quotation.

Q: How are commercial terms confirmed?
A: Commercial terms are confirmed during RFQ review based on model, quantity, destination, documentation and sourcing route.