KUKA KPS-600/20-ESC Power Supply Unit – Obsolete KR C2/KR C3 Spare Part

Technical Dossier

Product Details And Specifications

KUKA KPS-600/20-ESC Power Supply Unit – Obsolete KR C2/KR C3 Spare Part

When a KUKA KPS-600/20-ESC fails on the production floor, the clock starts immediately. This module is the primary power supply unit for KUKA KR C2 and KR C3 robot controllers — a generation of industrial robots that remains deeply embedded in automotive body shops, foundries, and heavy-fabrication lines worldwide. KUKA discontinued the KR C2 controller platform, and with it, the supply chain for components like the KPS-600/20-ESC has contracted to near zero through official channels.

DriveKNMS reviews sourcing options for discontinued components through RFQ handling before quotation.

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 such as input voltage range, output rails, and current ratings are verified during our QA process and provided upon request with the inspection report. No unverified specifications are published.

Solving the Discontinued Hardware Crisis

The KUKA KR C2 controller was the dominant platform in industrial robotics from the late 1990s through the mid-2010s. Hundreds of thousands of units were installed globally. The platform's discontinuation did not retire those robots — it simply ended the manufacturer's obligation to supply parts.

The KPS-600/20-ESC sits at the center of the controller's power architecture. It conditions incoming mains power and distributes regulated DC rails to the controller's CPU board, drive amplifiers, and safety circuits. There is no field-repairable substitute and no cross-compatible replacement from the current KR C4 or KR C5 platform without a full controller swap.

Facilities that operate KUKA KR C2-based cells face a binary choice when this module fails: source a replacement unit or commit to a controller modernization project. For plants running 10, 20, or 50 such robots, the modernization path is a multi-year capital program. Sourcing a verified KPS-600/20-ESC extends the operational life of the entire cell by years — at a fraction of the cost.

Condition & Reliability Assurance

Obsolete modules sourced outside the original supply chain carry real risk. DriveKNMS applies a 5-step inspection protocol before any KPS-600/20-ESC unit is offered for sale:

• Step 1 – Visual and Mechanical Inspection: Full board-level examination for physical damage, burn marks, cracked solder joints, and connector pin integrity.
• Step 2 – Electrolytic Capacitor Assessment: Electrolytic capacitors are the primary failure mode in aged power supply units. Each capacitor is tested for capacitance drift and ESR (equivalent series resistance). Units with out-of-tolerance capacitors are either recapped with equivalent-spec components or rejected.
• Step 3 – Firmware and Label Verification: Hardware revision markings and any embedded firmware identifiers are cross-referenced against known KR C2 compatibility matrices to confirm the unit is the correct revision for the target controller.
• Step 4 – Pin and Connector Corrosion Check: All connector interfaces are inspected under magnification for oxidation, corrosion, and mechanical deformation. Affected contacts are treated or the unit is rejected.
• Step 5 – Functional Power-On Test: Where test fixtures permit, units undergo a controlled power-on sequence to verify output rail stability before dispatch.

Each unit ships with a written inspection summary. Units that do not pass all five steps are not sold.

Key Features for System Maintenance

• Drop-in replacement: The KPS-600/20-ESC installs directly into the KR C2 controller cabinet using the original mounting points and connector harness. No mechanical modification is required.
• No reprogramming required: The power supply unit carries no robot program data. Replacement does not affect teach pendant programs, tool data, or system configuration. The controller resumes normal operation after replacement without software intervention.
• No engineering redesign: Unlike a controller platform migration, this is a like-for-like hardware swap. There are no integration costs, no revalidation of robot paths, and no retraining of operators.
• Preserves existing safety certification: Replacing a failed module with an identical-specification unit does not trigger a full safety re-assessment in most jurisdictions, unlike a controller platform change. Consult your local machinery safety authority for confirmation.
• Extends asset life by 5–10 years: A verified spare on hand eliminates the forced-retirement scenario. Plants that maintain a one- or two-unit buffer for critical modules routinely operate KR C2 cells a decade beyond the controller's official end-of-life date.

Q: Can this unit be used with the KUKA KR C4 controller?
A: No. The KPS-600/20-ESC is specific to the KR C2 and KR C3 controller architecture. It is not compatible with KR C4 or later platforms.