Woodward 80026-172-23-R Power Supply Module – Obsolete MicroNet Spare Part

Technical Dossier

Product Details And Specifications

Woodward 80026-172-23-R Power Supply Module – Obsolete MicroNet Spare Part

When a power supply module fails inside a Woodward MicroNet turbine control system, the consequences extend far beyond a single component. A complete control system replacement — including engineering, commissioning, retraining, and production downtime — routinely exceeds $500,000 USD for a single turbine train. In combined-cycle power plants or petrochemical facilities running multiple units, that figure multiplies. The 80026-172-23-R is the exact power supply module that keeps these legacy systems operational. DriveKNMS maintains verified stock of this discontinued component for facilities that cannot afford to gamble on system availability.

Technical Specifications

Note: Electrical parameters such as input voltage range and output ratings are not published here to prevent misapplication. Contact our technical team to verify compatibility with your specific system revision before ordering.

Solving the Discontinued Hardware Crisis

Woodward's MicroNet platform was the backbone of turbine control across power generation, oil & gas, and industrial compression for over two decades. The platform's architecture — built around dedicated power supply rails feeding control, I/O, and communication modules — means that a single failed power supply does not just take down one card. It takes down the entire control chassis.

Woodward has transitioned its product line toward the MicroNet Plus and NetCon 5000 platforms. Spare parts for the original MicroNet series, including the 80026-172-23-R, are no longer manufactured. Facilities that have not yet migrated — and many have not, given the capital cost and operational risk of a live system cutover — are entirely dependent on the secondary market for continued operation.

The strategic reality for plant managers is straightforward: a single verified spare of the 80026-172-23-R on the shelf represents an insurance policy against an unplanned outage that could last weeks while a replacement is sourced. The cost of that spare is a fraction of one day of lost generation or production revenue.

How to extend your Woodward MicroNet system life by 5–10 years without a full platform migration:

• Identify your single points of failure. The power supply module is the highest-risk component in any MicroNet chassis. A redundant spare eliminates the most common cause of unplanned control system downtime.
• Establish a minimum stock level. For facilities with two or more turbine trains on MicroNet, maintaining at least two verified 80026-172-23-R units in bonded storage is a defensible maintenance strategy.
• Document your firmware revision. MicroNet power supplies interact with specific firmware versions. Locking your system documentation now prevents compatibility issues when sourcing future spares from the secondary market.
• Negotiate a long-term supply agreement. Secondary market availability of this part will decrease over time. Securing a multi-unit purchase now, while stock exists, is materially cheaper than emergency sourcing in 18–24 months.
• Defer migration on your schedule, not the OEM's. A well-maintained MicroNet system with verified spare coverage can operate reliably for an additional 5–10 years. The decision to migrate should be driven by your capital planning cycle, not by a parts shortage.

Condition & Reliability Assurance

Sourcing discontinued power supply modules from the secondary market carries real risk. DriveKNMS applies a structured 5-step qualification process to every 80026-172-23-R unit before it is offered for sale:

1. Electrolytic Capacitor Inspection: Power supply modules of this age are susceptible to capacitor degradation. Each unit undergoes ESR (Equivalent Series Resistance) testing to identify aged or failing capacitors before the unit leaves our facility.
2. Firmware Version Verification: The installed firmware revision is documented and disclosed. Customers receive this information prior to shipment to confirm compatibility with their installed system.
3. Connector and Pin Integrity Check: All edge connectors and backplane pins are inspected under magnification for corrosion, oxidation, and mechanical damage. Affected contacts are cleaned or the unit is rejected.
4. Functional Power-On Test: Where test fixtures are available, units are powered and output rails are measured against published tolerances.
5. Cosmetic and Label Verification: Original Woodward part labels, revision markings, and date codes are verified and photographed. Full documentation is provided with each shipment.

Key Features for System Maintenance

• Drop-in replacement: The 80026-172-23-R installs directly into the existing MicroNet chassis backplane. No hardware modification is required.
• No reprogramming required: The power supply module carries no application logic. Replacement does not require a controls engineer or OEM service visit.
• Avoids engineering reconstruction costs: Substituting a compatible but non-identical power supply from a different platform requires chassis redesign, wiring modification, and re-commissioning — costs that routinely exceed $50,000 per unit. A direct replacement eliminates this entirely.
• Maintains system certification integrity: Using the original part number preserves the as-built configuration record, which is relevant for facilities operating under functional safety standards such as IEC 61511 or SIL-rated applications.

FAQ

Q: What warranty applies to a discontinued part like the 80026-172-23-R?
A: DriveKNMS provides a 12-month warranty against defects in materials and workmanship on all qualified units. Warranty claims are handled directly — no OEM involvement is required or possible for discontinued parts.

Q: How do I know the unit is genuine and not a counterfeit?
A: Each unit is inspected for original Woodward labeling, date codes, and board markings. We provide photographic documentation of the physical unit prior to shipment. Customers may request pre-shipment inspection photos before payment is confirmed.

Q: Should we buy more than one unit?
A: For any facility with active MicroNet systems, holding a minimum of two units is a defensible maintenance position. Secondary market availability of this specific part number will not improve over time. Facilities that have experienced one power supply failure statistically face a higher probability of a second failure in aging hardware.

Q: Can you source additional units if we need more than you have in stock?
A: Contact us directly. DriveKNMS maintains sourcing relationships across the global industrial surplus market. We can often locate additional verified units for customers with multi-unit requirements.

© 2026 DriveKNMS. All trademarks belong to their respective owners. Specifications are for reference only and subject to change without notice. Verify all parameters against official documentation before installation.