SIEMENS 6SL3720-1TG38-1AA3 SINAMICS S120 Single Motor Module with CIM for CU320-2 800kW 810A High Performance 690V

The SIEMENS 6SL3720-1TG38-1AA3 SINAMICS S120 Single Motor Module is a powerhouse in industrial automation, delivering high-performance motion control for demanding applications. This robust unit boasts an 800kW power rating and operates at 690V, offering substantial capacity for large-scale machinery. Equipped with a Control Interface Module (CIM) for the CU320-2 control unit, it ensures seamless integration and advanced command capabilities. Key advantages include its high efficiency, precise motor control, and reliability, making it a cornerstone for modern, demanding industrial operations that require exceptional power and control.

Product Specifications

| Feature                 | Specification                                       |

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

| Product Number          | 6SL3720-1TG38-1AA3                                  |

| Product Line            | SINAMICS S120                                       |

| Module Type             | Single Motor Module with CIM                        |

| Control Unit Compatibility | CU320-2                                             |

| Power Rating            | 800 kW                                              |

| Output Current          | 810 A                                               |

| Voltage                 | 690 V                                               |

| Protection Class        | IP20                                                |

| Cooling                 | Integrated air cooling                              |

| Dimensions (H x W x D)  | 530 mm x 275 mm x 230 mm                              |

| Weight                  | Approx. 35 kg                                       |

Core Features & Market Positioning

The SIEMENS 6SL3720-1TG38-1AA3 stands out in the high-performance drive market due to its advanced control architecture and robust power delivery. Its integration with the CU320-2 control unit provides sophisticated vector control algorithms, enabling exceptional dynamic response and precise positioning, even under stringent load conditions. This module is positioned as a premium solution for applications demanding superior motor performance, energy efficiency, and operational reliability. Compared to other offerings, the S120 series, and this module in particular, emphasizes its integrated safety functions and seamless connectivity within the Siemens automation ecosystem.

Key Application Scenarios

This high-performance module is ideally suited for a wide array of industrial applications where substantial power and dynamic control are paramount. It excels in heavy machinery sectors, including:

  Material Handling: Cranes, hoists, and large conveyor systems benefit from its precise speed and torque control for safe and efficient movement of heavy loads.  Metal Processing: Rolling mills, presses, and extruders utilize its high torque and dynamic response for demanding metal forming and shaping operations.  Plastics and Rubber: Injection molding machines and extruders require the precise control and rapid response offered by the SINAMICS S120 for consistent product quality.  Pulp and Paper: Large rollers and processing equipment in paper mills leverage its robust performance and reliability in continuous operation.  Test Benches and Special Machinery: Applications requiring high dynamics and precise motion profiles find this module to be a perfect fit for simulation and specialized tasks.

Practical System Integration Guidance

Integrating the SIEMENS 6SL3720-1TG38-1AA3 into an existing control system involves careful planning, particularly concerning power supply, motor connection, and communication. Ensure the 690V power supply is properly rated and protected according to local electrical codes. The motor must be compatible with the module's output characteristics and voltage/current ratings. Connection to the CU320-2 control unit is typically achieved via the integrated backplane or appropriate communication cables, depending on the specific CU320-2 variant and desired network topology. Proper grounding and shielding are critical for electromagnetic compatibility (EMC). Commissioning requires configuring drive parameters via Siemens' TIA Portal or STARTER software, which involves setting motor data, control modes (e.g., V/f control, vector control), and safety functions.

Operation and Risk Mitigation

Safe and efficient operation of the SIEMENS 6SL3720-1TG38-1AA3 hinges on adherence to operational guidelines and understanding potential fault conditions. The drive includes advanced diagnostics and safety integrated functions (like Safe Torque Off - STO) to mitigate risks. Before powering on, verify all connections and ensure the load is properly secured. During operation, monitor drive status through the control unit's interface or connected HMI for any anomalies. Common troubleshooting involves checking for fault codes displayed on the CU320-2. For instance, overcurrent faults (e.g., F07001) might indicate motor issues or incorrect parameterization, while overvoltage faults (e.g., F07002) could point to regenerative energy management problems. Always refer to the official SINAMICS S120 documentation for detailed fault code interpretation and resolution procedures.

Scalability & Long-Term Value

The SINAMICS S120 platform, including the 6SL3720-1TG38-1AA3 module, offers significant scalability and long-term value within a modern industrial automation strategy. Its modular design allows for expansion and adaptation to evolving production needs. Compatibility with the broader Siemens ecosystem, including SIMATIC controllers and HMI panels, facilitates seamless integration into larger automation projects and the Industrial Internet of Things (IIoT) landscape. The platform supports advanced features like condition monitoring and predictive maintenance, enabling proactive upkeep and minimizing downtime. Furthermore, regular firmware updates and ongoing support from Siemens ensure the drive remains technologically relevant and operational for many years, protecting the investment.

Frequently Asked Questions

What is the primary function of the SIEMENS 6SL3720-1TG38-1AA3?

This module acts as a high-power motor controller. It precisely manages the speed and torque of industrial motors.

It is designed for demanding applications requiring robust performance. It is a key component in advanced automation systems.

How do I connect the SIEMENS 6SL3720-1TG38-1AA3 to a motor?

Connect the motor power cables to the output terminals. Ensure correct phasing for three-phase motors.

Verify motor specifications match the drive's output capabilities. Use appropriately rated cables and ensure proper termination.

What is the voltage rating of this SINAMICS S120 module?

The module operates at a 690V nominal voltage. This high voltage suits large industrial motors.

This rating allows for efficient power delivery to high-power machinery. It is essential for heavy-duty industrial use cases.

Can I use the 6SL3720-1TG38-1AA3 with any motor?

It is designed for AC induction and synchronous motors. Ensure motor power and current ratings are within the module's limits.

Always check motor insulation class and performance characteristics for compatibility. Refer to motor manufacturer data for precise guidance.

What kind of applications is this module best suited for?

It excels in heavy material handling and processing. Applications include cranes, extruders, and rolling mills.

Its high power and dynamic response make it ideal for precise motion control. This ensures efficiency and product quality.

What is the role of the CIM in this product?

The CIM, Control Interface Module, connects the drive to the CU320-2 controller. It enables communication and command transfer.

It facilitates the exchange of control signals and diagnostic data. This ensures seamless integration into the automation system.

How does the SINAMICS S120 system handle safety?

This module supports integrated safety functions like STO. Safe Torque Off prevents unexpected motor movement.

These safety features reduce risk in hazardous environments. They are crucial for operator and equipment protection.

What software is used for commissioning this drive?

Siemens TIA Portal or STARTER software is used. These tools allow comprehensive parameter configuration.

You can set motor data, control modes, and diagnostics. This ensures optimal drive performance and integration.

Is this module suitable for regenerative braking applications?

Yes, the SINAMICS S120 platform supports regenerative energy feedback. It requires appropriate configuration and potentially external braking components.

This feature improves energy efficiency by returning power to the grid. It is valuable for applications with frequent deceleration.

What are the main advantages of using the 6SL3720-1TG38-1AA3?

Key advantages include high power density and precise motion control. It offers excellent energy efficiency and reliability.

Its integration within the Siemens automation ecosystem provides scalability. This ensures long-term value and future-proofing.