Siemens 6DD2920-0BB0 LES1 Module – Obsolete SIMADYN D Spare Part

Technical Dossier

Product Details And Specifications

Siemens 6DD2920-0BB0 LES1 Module – Obsolete SIMADYN D Spare Part

DriveKNMS maintains sourced inventory of discontinued Siemens SIMADYN D modules, including the 6DD2920-0BB0, specifically to support facilities that are managing legacy system lifecycles under capital expenditure constraints.

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

The Siemens SIMADYN D system was a high-performance, modular digital control platform introduced in the 1980s and widely deployed through the 1990s and early 2000s. It was engineered for demanding real-time control applications: large AC and DC drive systems, turbine controls, rolling mill automation, and power plant auxiliary systems. Siemens officially discontinued the SIMADYN D product line, and the 6DD2920-0BB0 LES1 module is no longer available through standard distribution channels.

The LES1 module functions as a communication and link error signaling interface within the SIMADYN D rack. Its role in maintaining inter-module communication integrity makes it a single point of failure in many configurations. There is no direct plug-compatible replacement available from Siemens or any OEM source. Facilities that have not pre-positioned spare units face a binary choice when this module fails: source a used or refurbished unit from the secondary market, or commit to a full system replacement program.

For plant managers operating under multi-year capital planning cycles, the secondary market is the only viable path to maintaining production continuity. DriveKNMS specializes in this supply chain gap — sourcing, testing, and supplying verified units of discontinued Siemens modules including the 6DD2920-0BB0.

How to extend your SIMADYN D system life by 5–10 years without a full migration:

Condition & Reliability Assurance

DriveKNMS applies a structured 5-step quality process to all SIMADYN D modules before dispatch review:

• Step 1 – Visual and Mechanical Inspection: Full examination of PCB surface, component seating, connector pin condition, and housing integrity. Units with physical damage, corrosion, or missing components are rejected at this stage.
• Step 2 – Electrolytic Capacitor Assessment: Capacitors are the primary age-related failure point in modules of this generation. Each unit is inspected for bulging, leakage, and ESR (equivalent series resistance) deviation where test equipment permits.
• Step 3 – Firmware and Label Verification: The hardware revision and any readable firmware identifiers are documented and cross-referenced against the part number to confirm the unit matches the 6DD2920-0BB0 specification.
• Step 4 – Connector and Pin Integrity Check: All edge connectors and backplane interface pins are inspected for oxidation, bending, and contact surface condition. Corroded contacts are a common cause of intermittent communication faults in aged modules.
• Step 5 – Functional Bench Test (where applicable): Where test rack infrastructure is available, modules undergo powered functional verification. Test results are documented and available to the customer upon request.

Key Features for System Maintenance

Q: How many spare units should we hold for a SIMADYN D installation?
A: For a production-critical installation, a minimum of one spare per unique module type is the baseline. For high-utilization or chemically aggressive environments, two spares per critical module type is the standard recommendation. Given the declining secondary market availability of SIMADYN D hardware, purchasing spares now rather than on a reactive basis is the lower-risk strategy.

Q: Can you source other SIMADYN D modules?
A: Yes. DriveKNMS maintains sourcing capability across the SIMADYN D module range. Submit your full bill of materials or spare parts list for a consolidated availability and pricing response.