MOX720 P4668D 80026-518-01 Power Supply Module – Obsolete PLC Spare Part

Technical Dossier

Product Details And Specifications

MOX720 P4668D 80026-518-01 Power Supply Module – Obsolete PLC Spare Part

When a power supply module fails inside a legacy PLC system, the consequences extend far beyond a single line stoppage. For plants still operating on MOX720-series controllers, the alternative to sourcing this exact module is a forced migration — a project that routinely costs $500,000 to several million dollars once engineering hours, new hardware, software re-validation, and production downtime are factored in. The MOX720 P4668D (part number 80026-518-01) has been discontinued by the original manufacturer. New production units are no longer available through standard distribution channels. DriveKNMS maintains verified physical stock of this module, sourced through controlled industrial asset recovery channels.

Technical Specifications

Note: Electrical parameters (voltage input/output, current rating, power rating) are not published here to prevent specification errors. Please contact us directly for confirmed datasheet documentation prior to ordering.

Solving the Discontinued Hardware Crisis

The MOX720 platform was deployed extensively in process automation environments during the 1990s and 2000s — petrochemical plants, water treatment facilities, and discrete manufacturing lines. The P4668D power supply module is the backbone of the MOX720 rack assembly. Without a functioning unit, the entire controller chassis loses power, taking down every I/O module and communication card it supports.

OEM support for this series has ended. Authorized repair centers no longer stock replacement boards. When this module fails, plant engineers face a binary choice: locate a verified replacement unit, or initiate a full system migration under emergency conditions — the worst possible context for a capital project of that scale.

Extending the operational life of a MOX720-based system by 5 to 10 years through strategic spare parts procurement is not a workaround. It is a documented asset protection strategy. The capital cost of a single unplanned migration — including lost production, contractor fees, and re-commissioning — typically exceeds the cost of maintaining a 3-to-5 year spare parts inventory by a factor of 10 or more. Procurement managers and plant engineers who build a verified spare parts buffer for critical modules like the P4668D are not delaying the inevitable; they are controlling the timeline on their own terms, preserving budget cycles, and avoiding emergency capital expenditure.

The MOX720 P4668D is commonly found in systems that also include legacy distributed control infrastructure from the same era. If your facility operates mixed-generation automation assets, a structured obsolescence management plan — covering power supplies, processor modules, and communication cards — is the most cost-effective path to sustained uptime.

Condition & Reliability Assurance

Every MOX720 P4668D unit that leaves our facility passes a 5-stage inspection protocol developed specifically for legacy industrial power supply modules:

• Electrolytic Capacitor Assessment: All electrolytic capacitors are inspected for bulging, leakage, and ESR degradation. Units with aged capacitors are either recapped with equivalent-spec components or removed from serviceable inventory.
• Firmware & Configuration Verification: Where applicable, firmware version is confirmed against known-good references for the 80026-518-01 revision. No unauthorized firmware modifications are accepted.
• Pin and Connector Inspection: All backplane connector pins are examined under magnification for oxidation, corrosion, and mechanical deformation. Affected pins are treated or the unit is downgraded.
• Functional Power-On Test: Units are bench-tested under load conditions to verify stable output and protection circuit behavior.
• Final Documentation: Each unit ships with an inspection record noting condition grade, test date, and technician sign-off.

Key Features for System Maintenance

• Drop-in replacement: The P4668D installs directly into the existing MOX720 rack slot. No backplane modification, no re-wiring.
• No reprogramming required: The power supply module carries no application logic. Replacement does not affect PLC program integrity or I/O configuration.
• Avoids engineering reconstruction costs: Using an identical replacement module eliminates the need for system re-validation, FAT/SAT testing, or control narrative updates — costs that accompany any hardware platform change.
• Immediate deployment readiness: Units are tested and packaged for immediate installation. No lead time associated with new production or custom manufacturing.

FAQ

What warranty applies to an obsolete part like this?
We provide a 90-day functional warranty on all refurbished units and a 30-day warranty on new surplus units. Warranty covers failure under normal operating conditions and excludes damage from incorrect installation or electrical overstress.

How do I know the unit is genuine and not counterfeit?
All units are sourced from decommissioned industrial assets or authorized surplus channels. Physical markings, PCB revision codes, and component profiles are verified against reference units. We do not source from unverified secondary markets.

Should I buy more than one unit?
For any system where the MOX720 P4668D is a single point of failure, holding a minimum of two spare units is standard practice. Given that stock availability for discontinued modules is unpredictable and can disappear permanently, procurement teams managing long-term asset life plans typically secure a 3-to-5 year buffer when stock is confirmed available.

Can you source other MOX720 series modules?
Yes. Contact us with your full BOM or part number list. We maintain sourcing networks for legacy PLC components across multiple discontinued platforms.