Siemens 6SL3055-0AA00-5DA0 Drive Option Board – SINAMICS S120

Siemens 6SL3055-0AA00-5DA0 — SINAMICS S120 Option Board for Deterministic Drive Control

The Siemens 6SL3055-0AA00-5DA0 is a technology option board engineered for the SINAMICS S120 drive platform. It extends the functional scope of S120 Control Units — primarily the CU320-2 family — by providing an additional processing layer for application-specific drive functions, including extended setpoint conditioning, supplementary closed-loop control channels, and drive-level data logging. Unlike a standalone control unit, this module operates as a subordinate processor that shares the S120 booksize backplane bus, receiving its 24 VDC auxiliary supply and synchronization signals directly from the host CU.

In a multi-axis S120 topology, the 6SL3055-0AA00-5DA0 occupies a defined slot on the Control Unit and communicates via the internal DRIVE-CLiQ-adjacent interface. Its firmware is managed through STARTER or TIA Portal V14 and above, and parameter sets are stored within the CU’s non-volatile memory, ensuring that module replacement does not require re-parameterization of the broader drive train — a critical operational advantage in high-availability production environments.

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Technical Parameters

Hardware Logical Analysis

The 6SL3055-0AA00-5DA0 is designed around a dedicated microcontroller subsystem that operates asynchronously from the host CU’s main DSP cycle, yet synchronizes its output data to the CU’s servo cycle via a shared dual-port RAM interface. This architecture prevents option board processing latency from introducing jitter into the primary current-control loop — a non-trivial design constraint in multi-axis servo applications where inter-axis synchronization tolerances are measured in microseconds.

EMC Design: The PCB layout employs a split ground plane strategy, isolating the digital processing domain from the backplane power domain. Ferrite bead arrays on all inter-domain signal lines suppress common-mode noise in the 1–30 MHz band, consistent with the EN 61800-3 Category C2 emission limits. The module’s metal housing provides an additional Faraday shielding layer, reducing susceptibility to radiated fields generated by adjacent power modules in the S120 booksize stack.

Thermal Management: Component placement prioritizes thermal symmetry across the PCB. High-dissipation ICs are positioned adjacent to the module’s rear heat-transfer interface, which conducts waste heat into the CU housing rather than relying on convective airflow within the sealed option slot. This passive conduction path maintains junction temperatures within specification at ambient conditions up to 55 °C without requiring dedicated cooling provisions.

Non-Volatile Parameter Storage: The module does not carry its own EEPROM for parameter storage. All configuration data resides on the host CU’s CompactFlash card, which means a module swap — in the event of hardware failure — requires only physical replacement and a CU power cycle. No re-commissioning via STARTER or TIA Portal is necessary, provided the CF card is retained. This design decision materially reduces mean time to repair (MTTR) in production environments.

Backplane Bus Arbitration: The S120 option slot bus uses a token-passing arbitration scheme. The 6SL3055-0AA00-5DA0 participates as a secondary node, yielding bus access to the CU’s primary DSP on every servo cycle boundary. This ensures that option board data transactions never preempt time-critical current-regulation tasks, maintaining the deterministic behavior that S120 servo axes require for coordinated motion profiles.

System Integration Benefits

• Zero-impact servo cycle determinism: The asynchronous processing architecture ensures option board tasks execute without consuming CU servo cycle budget, preserving ≤ 125 µs current-control cycle times on CU320-2 platforms.
• Non-disruptive module replacement: Parameter data stored on the host CU CF card means hardware swap does not trigger re-parameterization, reducing unplanned downtime to the duration of a single power cycle.
• Unified engineering environment: Full integration with STARTER and TIA Portal eliminates the need for separate configuration tools; all option board parameters appear within the standard drive object parameter tree.
• Extended diagnostic transparency: The module exposes its internal status via standard SINAMICS fault and alarm word structures (r0945, r2139), enabling PLC-level diagnostic logic without custom communication overlays.
• Safety function compatibility: When the host CU firmware supports Safety Integrated, the option board’s data paths are excluded from the safety-relevant execution domain, preventing any option board fault from masking or triggering a safety stop — a requirement under IEC 62061 for SIL 2 machine designs.
• Scalable multi-axis deployment: A single CU320-2 with this option board can serve as the coordination node for up to 6 servo axes in a booksize topology, with the option board providing supplementary setpoint processing that would otherwise require an external PLC function block.
• Reduced cabinet footprint: By consolidating supplementary drive functions onto the option board rather than external hardware, panel designers can eliminate one or more auxiliary controllers, reducing cabinet volume and wiring complexity.
• Firmware version traceability: The module’s firmware version is logged in the CU’s diagnostic buffer (r0018), providing a complete audit trail for ISO 9001-compliant maintenance records without manual documentation.
• TIA Portal V14+ project portability: Option board configuration is embedded within the TIA Portal project file, enabling version-controlled deployment across multiple machines from a single engineering workstation.
• Compatibility with SIMOTION and SINUMERIK: In systems where S120 drives are subordinate to a SIMOTION D or SINUMERIK 840D sl controller, the option board’s parameter interface remains accessible via the standard PROFIBUS/PROFINET drive object, requiring no topology-specific adaptation.

Quality Assurance & Global Logistics

Every unit of the 6SL3055-0AA00-5DA0 supplied by siemensplc.com is sourced as genuine Siemens AG product, procured through traceable supply channels. Prior to dispatch, each module undergoes a structured inspection protocol: visual examination for physical integrity, verification of the Siemens holographic authenticity label, and firmware version confirmation against the declared hardware revision suffix (DA0).

Units are packaged in anti-static ESD bags with desiccant inserts, placed in rigid foam-lined cartons rated for air freight handling per ISTA 2A. Humidity indicator cards are included; any card showing color change upon receipt is grounds for a no-questions replacement claim under our 12-month warranty.

Logistics operations are based in Xiamen, China, with direct access to Xiamen Gaoqi International Airport (XMN) and Xiamen Port for sea freight consolidation. Standard air freight transit times: 3–5 business days to Southeast Asia and Japan; 5–8 business days to Europe and the Middle East; 6–10 business days to North America. DHL Express, FedEx International Priority, and UPS Worldwide Express are the primary carriers. All shipments include a commercial invoice, packing list, and certificate of conformity. Export classification and HS code documentation are prepared in compliance with Chinese customs regulations and the destination country’s import requirements.

For urgent requirements — plant shutdowns, production line stoppages — same-day dispatch is available for in-stock units when orders are confirmed before 14:00 CST. Contact [email protected] or WhatsApp +86 18359268345 to confirm real-time stock status before placing an order.

Contact Information

Email: [email protected]
WhatsApp: +86 18359268345
Web: siemensplc.com
Location: Xiamen, China
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