Siemens 6SL3055-0AA00-2TA0 Control Unit – Obsolete SINAMICS S120 Spare Part

Technical Dossier

Product Details And Specifications

Siemens 6SL3055-0AA00-2TA0 Control Unit – Obsolete SINAMICS S120 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

Solving the Discontinued Hardware Crisis

For plant engineers, this creates a concrete operational threat: a single module failure can halt an entire multi-axis line with no direct replacement path. The alternative — platform migration — demands months of engineering work, requalification of safety functions, and production interruption that most facilities cannot absorb on short notice.

Condition & Reliability Assurance

Every 6SL3055-0AA00-2TA0 unit processed by DriveKNMS passes a structured 5-step inspection protocol before dispatch:

• Step 1 – Electrolytic Capacitor Assessment: Aging electrolytic capacitors are the primary failure mode in stored power electronics. Each unit undergoes ESR (Equivalent Series Resistance) measurement and visual inspection for bulging, leakage, or discoloration. Units with degraded capacitors are either recapped with OEM-specification components or rejected.
• Step 2 – Firmware Version Verification: The installed firmware version is recorded and cross-referenced against known compatibility matrices for target S120 system configurations. Mismatched firmware is flagged prior to shipment.
• Step 3 – Connector and Pin Integrity Check: All interface connectors are inspected under magnification for corrosion, bent pins, and oxidation. Contact surfaces are cleaned and treated where required.
• Step 4 – Functional Power-On Test: Units are bench-powered and tested for correct initialization, communication bus response, and absence of fault codes.
• Step 5 – Packaging and ESD Protection: Cleared units are sealed in anti-static packaging with desiccant and labeled with inspection date and technician ID for full traceability.

Key Features for System Maintenance

• Drop-in Replacement: The 6SL3055-0AA00-2TA0 installs directly into existing S120 drive line-ups without mechanical modification. No cabinet redesign is required.
• No Reprogramming Required: Parameter sets stored on the existing CompactFlash card or SINAMICS memory module transfer directly to the replacement unit. Recommissioning time is measured in minutes, not days.
• Avoids Engineering Reconstruction Costs: Retaining the existing S120 architecture eliminates the need for new drive sizing calculations, motor cable re-routing, safety relay revalidation, and PLC interface rewiring — costs that routinely exceed USD 200,000 on complex multi-axis installations.
• Long-Term Inventory Strategy: For facilities with three or more S120 axes, DriveKNMS recommends maintaining a minimum of two 6SL3055-0AA00-2TA0 units in on-site cold storage. This provides coverage for both immediate failure response and scheduled preventive replacement during planned shutdowns.

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

Q: Can DriveKNMS source other S120 or SINUMERIK spare parts?
A: Yes. Contact us with your full BOM or part number list for availability and pricing.