SIEMENS 6SL3720-1TG31-0AA3 SINAMICS S120 Single Motor Module with CIM for CU320-2 90kW 100A Basic Configuration 690V

The SIEMENS 6SL3720-1TG31-0AA3 SINAMICS S120 Single Motor Module is a high-performance drive solution engineered for demanding industrial applications. This unit boasts a basic configuration with a 90kW power output and a 100A current rating, operating at 690V. It features an integrated Control Interface Module (CIM) for seamless communication and control with the CU320-2 control unit. The SINAMICS S120 platform is renowned for its precise motion control capabilities, energy efficiency, and robust construction, making this module an ideal choice for applications requiring dynamic and reliable motor operation.

Product Specifications

| Parameter             | Value                                 |

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

| Product Type          | SINAMICS S120 Single Motor Module     |

| Part Number           | 6SL3720-1TG31-0AA3                    |

| Motor Power (kW)      | 90                                    |

| Continuous Current (A)| 100                                   |

| Voltage Rating (V)    | 690                                   |

| Configuration         | Basic                                 |

| Control Unit Interface | CIM for CU320-2                       |

| Cooling               | Air Cooling                           |

| Protection Rating     | IP20                                  |

| Dimensions (H x W x D) | 500 mm x 230 mm x 240 mm (approx.) |

| Weight                | 21 kg (approx.)             |

Core Features & Market Positioning

The SIEMENS 6SL3720-1TG31-0AA3 SINAMICS S120 module stands out in the competitive drive market due to its advanced technological integration and Siemens' established reputation for industrial automation reliability. Its defining characteristic is the seamless synergy with the CU320-2 control unit, enabling sophisticated closed-loop control, precise positioning, and synchronized multi-axis motion. This drive system offers exceptional dynamic performance, characterized by rapid response times and high torque accuracy, essential for complex manufacturing processes. Furthermore, the SINAMICS S120 platform is designed with energy efficiency in mind, incorporating features that optimize power consumption and reduce operational costs, positioning it as a smart investment for modern industrial facilities. The integrated CIM simplifies wiring and reduces the overall system footprint, a significant advantage in space-constrained environments.

Key Application Scenarios

This SIEMENS SINAMICS S120 module is exceptionally suited for a wide array of industrial automation tasks demanding precision and robust performance. It is a prime candidate for machine tools, where accurate spindle control and axis synchronization are paramount for achieving tight tolerances and high-quality finishes. In the packaging industry, its dynamic response is critical for high-speed filling, sealing, and labeling operations, ensuring throughput and product integrity. The module also finds extensive use in material handling systems, such as automated storage and retrieval systems (AS/RS) and conveyor controls, where precise movement and reliable operation are key to efficient logistics. Furthermore, its 690V rating makes it suitable for heavy industries and applications requiring higher power drives, including the printing industry for web handling and the plastics industry for extrusion processes.

Practical System Integration Guidance

Integrating the SIEMENS 6SL3720-1TG31-0AA3 SINAMICS S120 module into an existing automation system requires careful attention to electrical connections and control system configuration. The module connects to the CU320-2 control unit via the integrated CIM, which simplifies the physical interconnection. Power connections must adhere strictly to the 690V rating, utilizing appropriate cable sizing and protection devices to ensure safety and prevent component damage. Commissioning typically involves utilizing Siemens' TIA Portal software suite. This allows for parameterization of the motor data, definition of control modes (e.g., V/f control, vector control, servo control), and configuration of safety functions. Proper grounding and shielding of motor and encoder cables are crucial to minimize electromagnetic interference (EMI) and ensure stable operation, particularly in electrically noisy industrial environments.

Operation and Risk Mitigation

Operating the SIEMENS 6SL3720-1TG31-0AA3 SINAMICS S120 module safely and efficiently hinges on understanding its operational parameters and potential fault conditions. Regular monitoring of motor temperature, drive status, and system load is essential to prevent overloads and premature wear. The drive's internal diagnostics provide valuable information; for instance, common fault codes such as F0001 (Overcurrent) or F0002 (Overvoltage) indicate specific issues that require immediate attention and adherence to troubleshooting guidelines outlined in the Siemens documentation. Implementing a comprehensive preventative maintenance schedule, including visual inspections, cleaning of ventilation paths, and checking electrical connections, can significantly mitigate risks of unexpected downtime and equipment failure. Adherence to safety standards, such as proper lockout/tagout procedures during maintenance and ensuring emergency stop functionality is correctly integrated, is paramount.

Scalability & Long-Term Value

The SIEMENS 6SL3720-1TG31-0AA3 SINAMICS S120 module offers significant scalability and long-term value within the Siemens automation ecosystem. Its modular design allows for the expansion of functionality by integrating additional I/O modules or safety integrated functions, adapting to evolving process requirements without necessitating a complete system overhaul. Compatibility with other SINAMICS S120 components and across different generations of Siemens control platforms, particularly through the TIA Portal, ensures a smooth upgrade path and protects investment in existing infrastructure. The drive's ability to integrate with Industrial Internet of Things (IIoT) platforms and digital services, such as predictive maintenance and remote monitoring, further enhances its long-term value by enabling data-driven optimization and increased operational efficiency.

Frequently Asked Questions

What are the primary benefits of the SIEMENS 6SL3720-1TG31-0AA3?

This module offers precise motion control and high dynamic performance for demanding applications. It integrates seamlessly with Siemens control units for advanced automation. Its energy efficiency reduces operational costs significantly.

The unit's robust construction ensures reliability in harsh industrial environments. It provides versatile control options for various motor types and applications. Siemens' extensive support network adds to its long-term value.

Key advantages include simplified system integration due to the CIM. It also offers advanced diagnostics for proactive maintenance. The 690V rating suits high-power industrial needs effectively.

How is the SIEMENS 6SL3720-1TG31-0AA3 configured for typical applications?

Configuration is typically done using Siemens TIA Portal software. This allows detailed motor and control parameter setting. Users can define operating modes like V/f or vector control.

Safety functions and I/O are configured within the TIA Portal environment. This ensures the drive meets specific application safety requirements. It allows for tailored automation logic.

The basic configuration includes essential functions for single-motor control. Expansion is possible with additional modules for more complex needs. This adaptability is a key benefit.

What are common troubleshooting steps for this drive?

Check for active fault codes displayed on the control unit. Consult the Siemens documentation for specific fault code meanings and remedies. These codes guide the troubleshooting process.

Verify all power and control cable connections for proper seating and integrity. Ensure motor and encoder cables are correctly wired and shielded. Loose connections are a common issue.

Perform basic diagnostic checks via the HMI or TIA Portal. Resetting the drive after resolving an issue is often required. Persistent faults may indicate component failure.

Can this module control multiple motors simultaneously?

No, the 6SL3720-1TG31-0AA3 is a single motor module. It is designed for controlling one motor exclusively. Multi-motor configurations require different SINAMICS S120 variants.

For multi-motor applications, you would typically use a multi-axis SINAMICS S120 chassis with multiple motor modules. This setup allows synchronized control of several motors. It is a more complex system.

Siemens offers various SINAMICS S120 chassis and modules to accommodate different system architectures. Careful planning is needed for multi-motor setups.

What are the electrical connection requirements for the 6SL3720-1TG31-0AA3?

Connect the main power to the 690V terminals, ensuring correct phase rotation. Use appropriately sized cables and circuit breakers for protection. Adhere to local electrical codes strictly.

Motor connection is made via output terminals, with shielded cables recommended. Encoder feedback cables connect to the CIM or control unit for closed-loop control. Proper grounding is essential.

Control voltage supply and communication cables to the CU320-2 must be correctly terminated. Follow wiring diagrams precisely to avoid damage. Consult the manual for detailed schematics.

What safety features are integrated into the SINAMICS S120 system?

Safety Integrated functions includeSTO (Safe Torque Off) to prevent unexpected machine start-up. SLS (Safely Limited Speed) is also a common feature for operator safety. These are crucial for hazard reduction.

Other safety functions can include SS1 (Safe Stop 1) and SBC (Safe Brake Control). These are configurable via the TIA Portal for specific risk assessments. They enhance workplace safety.

The system supports integration with external safety relays and safety PLCs for comprehensive safety solutions. Regular testing of safety functions is mandatory.

How does this module compare to other SINAMICS S120 variants?

This is a basic configuration single motor module for 690V applications. Other variants offer different power ratings, voltage levels, or integrated safety features. It is tailored for specific needs.

Higher-end SINAMICS S120 modules might include advanced functions like integrated safety or higher performance capabilities. The CU320-2 control unit itself offers various firmware options. It is important to match the drive to the task.

The choice depends on required performance, voltage, and application complexity. This specific model excels in cost-effectiveness for standard high-power tasks.

What is the role of the CIM in the 6SL3720-1TG31-0AA3?

The CIM (Control Interface Module) provides the physical interface between the motor module and the CU320-2 control unit. It simplifies wiring and reduces the overall system footprint. It integrates control signals efficiently.

It handles communication protocols and data exchange between the controller and the power section of the drive. This ensures seamless operation and rapid response times. It is a critical component for communication.

The CIM also provides connections for encoder feedback and other essential sensors required for precise motor control. It consolidates these connections effectively.

What is the typical lifespan and maintenance for this product?

The SINAMICS S120 is built for industrial longevity with proper maintenance. Lifespan often exceeds 10-15 years, depending on operating conditions. Regular cleaning and connection checks are vital.

Preventative maintenance includes fan checks, filter cleaning, and thermal monitoring. Following Siemens' recommended maintenance schedule is key. Avoid operating in excessively dusty or humid environments.

Periodic inspections and firmware updates can further prolong service life and ensure optimal performance. Understanding error codes helps in early detection of issues.

How can I integrate the 6SL3720-1TG31-0AA3 with IIoT and Industry 4.0?

Connect the CU320-2 control unit to an industrial network (e.g., PROFINET, PROFIBUS). This allows data exchange with higher-level systems. Use the TIA Portal for network configuration.

Implement diagnostic and performance data logging from the drive. This data can feed into cloud-based analytics platforms. Predictive maintenance is a key application.

Leverage Siemens' digital services or third-party solutions for remote monitoring and optimization. This enables intelligent automation and data-driven decision-making.