SIEMENS 6SL3720-1TE41-2AA3 SINAMICS S120 Single Motor Module with CIM for CU320-2 710kW 1260A High Current Unit 400V

The Siemens 6SL3720-1TE41-2AA3 SINAMICS S120 Single Motor Module represents a pinnacle of drive technology, engineered for demanding industrial applications. This high-current unit, boasting a 710kW power rating and 1260A capacity at 400V, is designed to deliver exceptional performance and reliability. Its integration with the CU320-2 control unit via a Communication Interface Module (CIM) ensures seamless control and advanced functionality. Key advantages include its robust power handling, precise motor control capabilities, and integration within the Siemens automation ecosystem, making it a superior choice for complex motion control tasks. The module's core technical specifications are detailed below.

| Feature                  | Specification                                       |

| :----------------------- | :-------------------------------------------------- |

| Product Number           | 6SL3720-1TE41-2AA3                                  |

| Product Line             | SINAMICS S120                                       |

| Type                     | Single Motor Module with CIM for CU320-2            |

| Rated Power              | 710 kW                                              |

| Rated Current            | 1260 A                                              |

| Voltage                  | 400 V                                               |

| Control Unit Interface   | CIM (Communication Interface Module) for CU320-2    |

| Cooling                  | Integrated forced air cooling                       |

| Protection Class         | IP20                                                |

| Dimensions (H x W x D)   | Varies based on specific configuration, consult manual |

| Ambient Temperature Range| -20°C to +45°C (derating may apply)                |

Core Features & Market Positioning

The SINAMICS S120 platform, to which the 6SL3720-1TE41-2AA3 belongs, is renowned for its distributed intelligence and modular design, enabling flexible and scalable automation solutions. This specific high-current unit distinguishes itself through its ability to manage significant power demands with high efficiency and precision. Its integration with the CU320-2 control unit provides access to advanced control algorithms, including vector control and servo control, allowing for optimal performance in dynamic applications. Market positioning is firmly within the high-performance industrial drive sector, catering to industries requiring robust and reliable motion control for heavy machinery and complex production lines. Siemens' established reputation for quality and innovation further solidifies its competitive edge.

Key Application Scenarios

The Siemens 6SL3720-1TE41-2AA3 SINAMICS S120 module is ideally suited for a wide array of demanding industrial applications where high power, precise control, and system integration are paramount. This includes its use in heavy manufacturing, such as in metal forming, rolling mills, and large material handling systems, where consistent torque and speed control are critical. In the petrochemical industry, it can be employed for large pump and compressor drives. Furthermore, its capabilities make it a strong candidate for complex machine tools, printing presses, and large-scale robotics, enabling intricate movements and high throughput. The module's ability to seamlessly integrate with other Siemens automation components, like PLCs and HMIs, makes it a versatile solution for both new installations and upgrades.

Practical System Integration Guidance

Integrating the SIEMENS 6SL3720-1TE41-2AA3 SINAMICS S120 module into an existing or new automation system requires careful planning. Connection to the CU320-2 control unit is established via the CIM, ensuring efficient data exchange. The high current rating necessitates robust power cabling and appropriate circuit protection, adhering strictly to local electrical codes and Siemens' installation guidelines. For optimal performance, motor parameters must be accurately entered into the control unit during commissioning, often through Siemens' STARTER commissioning software. Proper grounding and shielding of cables are essential to mitigate electromagnetic interference (EMI) and ensure system stability.

Operation and Risk Mitigation

Safe and efficient operation of the SIEMENS 6SL3720-1TE41-2AA3 module hinges on understanding its operational parameters and potential fault conditions. The unit is equipped with comprehensive protection functions to safeguard both the motor and the drive itself, including overcurrent, overvoltage, and undervoltage protection. It is crucial to ensure the cooling system is functioning optimally to prevent thermal overload, especially during continuous high-load operation. Familiarity with common error codes displayed on the CU320-2 control unit is vital for prompt troubleshooting. Regularly scheduled maintenance, including checking connections and cleaning cooling vents, will significantly reduce the risk of unexpected downtime and extend the module's service life.

Scalability & Long-Term Value

The SINAMICS S120 platform is designed with scalability at its core, allowing for expansion and adaptation to evolving industrial needs. The modular architecture of the 6SL3720-1TE41-2AA3 enables easy integration of additional motor modules or other drive components to manage increased loads or more complex multi-axis applications. Compatibility with Siemens' TIA Portal (Totally Integrated Automation) offers a unified engineering framework for programming, configuration, and diagnostics, simplifying integration with other Siemens products. This ensures long-term value by providing a future-proof solution that can readily incorporate advancements in digital manufacturing and the Industrial Internet of Things (IIoT), such as condition monitoring and predictive maintenance.

Frequently Asked Questions

What are the main advantages of the Siemens 6SL3720-1TE41-2AA3?

This unit offers exceptional power density and precise control for demanding motor applications. Its robust design ensures high reliability in harsh industrial environments. The seamless integration with the SINAMICS S120 platform provides advanced features.

The module supports flexible motion control capabilities, including advanced vector and servo control modes. It is engineered for high efficiency, contributing to reduced operational costs. Its compatibility with Siemens' TIA Portal simplifies engineering and maintenance.

Its ability to handle high currents and voltages makes it suitable for heavy-duty machinery. The drive's built-in diagnostics and protection features minimize downtime and ensure safe operation. It represents a significant investment in automation efficiency and longevity.

How do I connect the 6SL3720-1TE41-2AA3 to a CU320-2 control unit?

Connection is made through the Communication Interface Module (CIM) that bridges the motor module and the control unit. Ensure both units are powered down before making any physical connections. The CIM provides the necessary digital and power interfaces for communication and control.

Carefully align the CIM with the designated slots on both the motor module and the CU320-2. Secure the CIM firmly according to the installation manual to ensure a stable connection. Incorrect seating can lead to communication errors or system malfunctions.

Verify the connection via the STARTER commissioning software after initial power-up. The software will confirm communication status and allow for parameter configuration specific to the connected hardware. Always consult the official Siemens documentation for detailed wiring diagrams.

What are typical error codes for the SINAMICS S120?

Common error codes often relate to motor or drive faults, such as overcurrent (e.g., F7400) or overtemperature (e.g., F7001). These indicate that the drive has detected a condition exceeding its operational limits. Immediate attention to these codes is necessary.

Other frequent errors might involve communication issues (e.g., F1000) between the control unit and motor module, or encoder feedback problems (e.g., F7404). These signal disruptions in data exchange or signal loss from the motor's position feedback.

Referencing the SINAMICS S120 Control System Faults List manual is crucial for understanding the exact meaning and recommended corrective actions for each error code. This documentation provides detailed troubleshooting steps.

What is the power rating and current capacity of this module?

The Siemens 6SL3720-1TE41-2AA3 is rated for a substantial 710 kW of power. This signifies its capability to drive large and demanding industrial machinery. High power output is critical for applications requiring significant mechanical force.

This module can handle a peak current of 1260 Amperes. This high current capacity is essential for applications with high starting torques or rapid acceleration demands. It ensures the drive can deliver the necessary power without exceeding its limits.

The module operates at a standard industrial voltage of 400 Volts. This voltage level is common in many medium to high-power industrial settings, allowing for broad compatibility with existing electrical infrastructure.

Can this module be used for servo applications?

Yes, the SINAMICS S120 platform, including this module, is highly capable for servo applications. Its advanced control algorithms enable precise positioning and dynamic motion control required for servo tasks. The integration with the CU320-2 controller provides the necessary processing power for complex servo profiles.

The module supports high-resolution encoder feedback, which is essential for accurate position and velocity control in servo systems. Its ability to perform rapid dynamic responses allows for quick and precise movements, ideal for automation and robotics.

Proper configuration of servo parameters within the STARTER software is key to achieving optimal performance. This includes setting up closed-loop control, motion profiles, and safety functions tailored to the specific servo application.

What are the cooling requirements for the 6SL3720-1TE41-2AA3?

The module features an integrated forced-air cooling system to dissipate heat generated during operation. This system typically consists of fans that draw ambient air across heatsinks to maintain optimal operating temperatures. Regular inspection of the cooling vents for obstructions is vital.

Adequate ventilation in the control cabinet is essential to support the module's internal cooling. Ensure sufficient space around the unit for airflow and that the ambient air temperature remains within the specified operating range of -20°C to +45°C.

For continuous operation at the higher end of its power or current ratings, or in higher ambient temperatures, derating might be necessary. Consult the product manual for specific derating curves and recommendations to prevent thermal overload.

How does the CIM facilitate integration with the CU320-2?

The Communication Interface Module (CIM) acts as the crucial link between the SINAMICS S120 motor module and the CU320-2 control unit. It translates control commands and feedback signals, enabling seamless data exchange between the intelligent drive components. The CIM ensures high-speed communication protocols are utilized.

It provides the necessary physical interfaces for both power and communication lines. This modular approach allows for flexibility in system design, enabling different combinations of control units and motor modules to be used together efficiently.

By standardizing the interface, the CIM simplifies wiring and reduces installation complexity. This enhances the overall robustness of the system and facilitates easier maintenance and upgrades in the future.

What is the IP rating of this drive module?

The SIEMENS 6SL3720-1TE41-2AA3 SINAMICS S120 motor module has an IP20 protection rating. This means it offers protection against solid objects greater than 12.5 mm in diameter, such as a finger, but it is not protected against water ingress.

Therefore, this module is intended for installation in control cabinets or enclosures that provide a higher degree of protection against environmental factors like dust and moisture. Proper cabinet design is crucial for reliable operation.

The IP20 rating underscores the importance of locating this drive in a clean, dry industrial environment or within a protective enclosure to ensure its longevity and prevent potential operational failures due to environmental exposure.

What kind of motor can be connected to this unit?

This high-current SINAMICS S120 module is designed to control a wide variety of AC motors, including asynchronous (induction) and synchronous reluctance motors. It is particularly well-suited for powerful motors that require precise speed and torque control.

The drive supports different motor feedback systems, such as encoders or resolvers, which are essential for advanced control modes like vector control and servo control. Accurate motor data must be entered during commissioning for optimal performance.

Siemens recommends using motors that are compatible with their drive technology for best results. Always consult the motor manufacturer's specifications and the SINAMICS S120 documentation to ensure compatibility and safe operation.

Where can I find the detailed technical specifications and manuals for this product?

Detailed technical specifications and comprehensive user and commissioning manuals for the SIEMENS 6SL3720-1TE41-2AA3 can be found on the official Siemens Industry Online Support (SIOS) portal. This is Siemens' primary online resource for product documentation.

You can access these documents by searching for the product number '6SL3720-1TE41-2AA3' on the SIOS website. The portal provides access to PDF manuals, datasheets, application examples, and firmware information.

Ensure you download the latest versions of the documentation to have the most up-to-date information on installation, operation, parameter settings, and troubleshooting for your SINAMICS S120 drive module.