Kollmorgen S7240F-NAF2NA-NA-035 Servo Drive – Obsolete SERVOSTAR Spare Part

Technical Dossier

Product Details And Specifications

Kollmorgen S7240F-NAF2NA-NA-035 Servo Drive – Obsolete SERVOSTAR Spare Part

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

Technical Specifications

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

Solving the Discontinued Hardware Crisis

The Kollmorgen SERVOSTAR S7000 series was engineered for high-dynamic servo applications requiring precise torque, velocity, and position control. These drives were deeply integrated into machine architectures — often communicating via proprietary Kollmorgen interfaces or legacy fieldbus protocols such as SERCOS or CANopen. Replacing the drive with a modern alternative is not a plug-and-swap operation. It requires re-engineering the motion profile, reconfiguring the controller, and in many cases, replacing the servo motor itself due to feedback incompatibility.

Factories running legacy Kollmorgen SERVOSTAR systems face a binary choice: source the original part and extend the machine's productive life, or commit to a capital-intensive retrofit that disrupts production schedules and consumes engineering resources. For plants operating on tight maintenance budgets or facing regulatory freeze on capital expenditure, the original spare part is the only viable path.

Condition & Reliability Assurance

Obsolete servo drives carry inherent aging risks that standard incoming inspection cannot detect. DriveKNMS applies a 5-step QA protocol specifically designed for legacy power electronics:

Step 1 – Electrolytic Capacitor Assessment: Capacitors are the primary failure point in aged servo drives. We inspect for bulging, leakage, and ESR deviation. Units with degraded capacitors are either reconditioned or rejected.

Step 2 – Firmware Version Verification: We confirm the firmware revision matches the customer's existing system requirements. Mismatched firmware on SERVOSTAR drives can cause tuning incompatibility or communication faults.

Step 3 – Pin and Connector Corrosion Inspection: All I/O connectors, power terminals, and feedback ports are inspected under magnification for oxidation, bent pins, and contact resistance issues.

Step 4 – Power-On Functional Test: Where test bench infrastructure permits, units are powered and tested for basic drive enable, fault-free initialization, and communication response.

Step 5 – Cosmetic and Label Verification: Part number labels, revision markings, and serial number plates are cross-referenced against known authentic Kollmorgen documentation to screen for counterfeit or misrepresented units.

Units that pass all five steps are classified as Tested Surplus. Units that pass visual and firmware checks but cannot be bench-tested are classified as Inspected Surplus and priced accordingly. Condition is disclosed in full on every quotation.

Key Features for System Maintenance

Drop-in Replacement: The S7240F-NAF2NA-NA-035 is a direct hardware replacement for the same part number in your existing machine. No mechanical modifications, no wiring changes, no motor replacement required.

No Reprogramming Required: Parameters stored in the machine controller or external configuration tool are retained. Commissioning time is limited to parameter restore and a standard motion test — typically completed within one shift.

Long-Term Spare Stocking Strategy: For facilities operating multiple machines with SERVOSTAR drives, DriveKNMS recommends a minimum of one cold spare per critical axis. We can assist procurement teams in building a structured spare parts inventory plan with staggered delivery and storage guidance.

Q: How do I know the unit is genuine and not counterfeit?
A: Every unit undergoes label verification against known Kollmorgen documentation. We provide full traceability documentation including source records. If a unit cannot be verified as authentic, it is not offered for sale.

Q: Is this a new or refurbished unit?
A: Condition is disclosed on every quotation. We offer Tested Surplus and Inspected Surplus grades. New-in-box units are listed separately when available. We do not misrepresent condition under any circumstances.

Q: Can you support multi-unit or repeat RFQ requests?
A: Yes. Send the model list, target quantity and destination so DRIVEKNMS can review sourcing options and quote the requirement as a project RFQ.