Siemens 6SL3120-2TE13-0AA4 Servo Drive Module – SINAMICS S120

Siemens 6SL3120-2TE13-0AA4 — Dual-Axis Motor Module for Synchronized Servo Control in SINAMICS S120 Booksize Systems

The 6SL3120-2TE13-0AA4 is a dual-channel power output stage within the SINAMICS S120 booksize drive family. Each axis delivers a continuous rated output current of 3 A from a 600 V DC link, making this module the preferred selection for compact multi-axis servo systems where cabinet space, energy efficiency, and deterministic motion synchronization are primary engineering constraints. The module interfaces exclusively via DRIVE-CLiQ, Siemens’ proprietary digital drive bus, enabling automatic topology recognition and parameter exchange with upstream control units such as the CU320-2 DP/PN or SINUMERIK NCU 7×0.3.

In a typical SINAMICS S120 booksize cabinet, the 6SL3120-2TE13-0AA4 occupies a single booksize slot and shares the common DC bus with the Active Line Module (ALM). This shared-bus architecture allows kinetic energy recovered during motor deceleration to be redistributed across all axes on the same DC rail rather than dissipated as heat through braking resistors, measurably reducing net energy draw in duty cycles with frequent acceleration–deceleration sequences.

The module’s dual-axis topology is not simply two independent single-axis stages in one housing. Both output channels share a common gate-driver power supply and a unified thermal management path, which means the thermal derating curve must be evaluated for the combined power dissipation of both axes simultaneously. At ambient temperatures up to 40 °C and standard switching frequencies, both axes operate at full 3 A rating. Above 40 °C, output current must be derated per the characteristic curves in Siemens document A5E03264351.

Real-time axis synchronization is achieved through the isochronous PROFIBUS DP or PROFINET IRT clock domain managed by the CU320-2. The 6SL3120-2TE13-0AA4 participates in this clock domain with a servo cycle time configurable down to 125 µs, enabling electronic gearing ratios and cam-profile following with position error budgets well below 1 encoder count at rated speed. This level of determinism is required in applications such as flying shear, cross-sealing jaws, and multi-spindle CNC interpolation.

Real-time Stock & RFQ: [email protected] | WhatsApp: +86 18359268345

Technical Parameters

Hardware Logical Analysis

The 6SL3120-2TE13-0AA4 employs an IGBT-based three-phase inverter bridge on each output channel. The gate-driver stage uses isolated DC/DC converters per IGBT arm, providing galvanic separation between the control logic (3.3 V CMOS domain) and the power stage (600 V DC bus). This isolation architecture is a fundamental EMC countermeasure: high dV/dt transients on the power rails during switching events are prevented from coupling into the signal processing circuitry through capacitive paths.

The module’s internal current measurement is performed by Hall-effect sensors rather than shunt resistors. Hall-effect measurement is inherently galvanically isolated and introduces no insertion impedance into the motor phase conductors, which preserves the accuracy of the current feedback loop at high switching frequencies where shunt-based measurement would introduce phase lag from parasitic inductance.

EMC design follows a layered approach. The PCB layout separates the power plane (DC bus copper pours) from the signal plane (DRIVE-CLiQ, gate-drive logic) with a dedicated ground plane between them acting as a Faraday shield. The module’s metal housing is bonded to the PE rail through a low-impedance strap, providing a defined return path for common-mode currents induced by motor cable capacitance. This design allows the module to meet IEC 61800-3 Category C2 conducted and radiated emission limits without an external EMC filter in most standard installations.

Thermal management uses a single aluminum extrusion heatsink shared between both axis power stages. The internal fan draws air from the bottom of the booksize cabinet and exhausts through the top, consistent with the SINAMICS S120 booksize airflow convention. The thermal model embedded in the firmware monitors junction temperature via an NTC thermistor bonded to the IGBT module substrate. If junction temperature approaches the 150 °C threshold, the firmware reduces switching frequency and, if necessary, limits output current before triggering a fault — a controlled thermal protection sequence that avoids abrupt drive trips in production environments.

The DRIVE-CLiQ interface implements a 100 Mbit/s full-duplex Ethernet physical layer with a proprietary Siemens application protocol. On power-up, the CU320-2 performs an automatic topology scan: each DRIVE-CLiQ node reports its electronic nameplate (article number, serial number, firmware version, and rated data) to the control unit. The 6SL3120-2TE13-0AA4 stores this nameplate in non-volatile memory on the module itself, enabling the CU320-2 to detect module substitution and flag a configuration mismatch before the drive attempts to run — a critical safeguard in multi-axis systems where incorrect module substitution could cause axis runaway.

System Integration Benefits

• Reduced cabinet footprint: One 50 mm-wide booksize slot replaces two separate single-axis modules, freeing panel space for additional I/O or safety relays in constrained enclosures.
• Shared DC bus energy recovery: Regenerative braking energy from one axis is directly available to accelerating axes on the same DC rail, reducing peak demand on the Active Line Module and lowering energy consumption in cyclic motion profiles by 15–30 %.
• Automatic commissioning via DRIVE-CLiQ: Electronic nameplate exchange eliminates manual parameter entry for motor and encoder data; STARTER or TIA Portal reads rated values directly from the connected motor’s DRIVE-CLiQ encoder interface.
• Isochronous servo synchronization: 125 µs cycle time participation in the PROFIBUS DP or PROFINET IRT clock domain enables electronic gearing and cam-profile following with sub-millisecond axis-to-axis jitter.
• Integrated functional safety without external hardware: STO and SS1 functions certified to SIL 2 / PLd are executed within the module’s own safety processor, eliminating external safety contactors and reducing wiring complexity in SIL 2 machine safety architectures.
• Transparent diagnostics via STARTER / TIA Portal: The module reports axis-level fault codes, thermal status, DC link voltage, and output current in real time over DRIVE-CLiQ, enabling predictive maintenance without additional instrumentation.
• Scalable multi-axis topology: Up to 6 motor modules (single or double) can be daisy-chained on one DRIVE-CLiQ strand from a CU320-2, supporting machine configurations from 2 to 12 servo axes on a single control unit.
• Firmware field-upgrade capability: Module firmware is updated over DRIVE-CLiQ from the CU320-2 without physical access to the module, reducing maintenance downtime in installed machines.

Quality Assurance & Global Logistics

Every 6SL3120-2TE13-0AA4 unit dispatched from our Xiamen, China facility is a genuine Siemens-manufactured component. Authenticity is verified by cross-referencing the module’s serial number against Siemens’ product traceability records prior to shipment. The electronic nameplate stored in the module’s non-volatile memory is read and confirmed to match the article number and rated data before the unit is packaged.

Pre-shipment inspection covers visual examination of the housing, connector integrity, label legibility, and firmware version. Units with any evidence of physical damage, connector pin deformation, or label tampering are quarantined and not offered for sale. Where test bench capacity permits, DC link energization and DRIVE-CLiQ handshake confirmation are performed as a functional check.

Packaging follows IEC 60068-2 transport stress guidelines: each module is placed in an anti-static shielding bag, cushioned in a foam-lined corrugated carton, and sealed with a humidity indicator card. For international shipments, a commercial invoice, packing list, and certificate of origin are prepared to facilitate customs clearance. The HS code for this product is 8537.10. Export documentation is prepared in compliance with Chinese customs regulations and destination-country import requirements.

Standard dispatch from Xiamen is within 1–3 business days for in-stock units. International express freight (DHL, FedEx, UPS) typically delivers to Europe in 3–5 business days and to North America in 4–6 business days. For large-volume orders or project BOM requirements, sea freight and consolidated air freight options are available on request. All units carry a 12-month warranty from the date of dispatch, covering manufacturing defects and confirmed functional failures under normal operating conditions.

Contact Information

Email: [email protected]
WhatsApp: +86 18359268345
Web: siemensplc.com
Location: Xiamen, China
© 2026 siemensplc.com. All rights reserved.