SIEMENS 6SL3720-1TG34-7AA3 SINAMICS S120 Single Motor Module with CIM for CU320-2 450kW 465A Industrial Stage 690V

The SIEMENS 6SL3720-1TG34-7AA3 SINAMICS S120 Single Motor Module with CIM for CU320-2 is a powerhouse in industrial automation, delivering robust performance for demanding applications. This module excels with its high power output of 450kW and a substantial 465A current rating, operating reliably at an industrial stage of 690V. Its integrated Control Interface Module (CIM) for the CU320-2 controller ensures seamless communication and advanced control capabilities. Key advantages include exceptional energy efficiency, precise motion control, and superior system integration within the SINAMICS S120 drive family.

| Parameter                     | Value                                         |

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

| Product Number                | 6SL3720-1TG34-7AA3                            |

| Series                        | SINAMICS S120                                 |

| Type                          | Single Motor Module with CIM                  |

| Controller Compatibility      | CU320-2                                       |

| Rated Power                   | 450 kW                                        |

| Rated Current                 | 465 A                                         |

| Voltage Stage                 | 690 V                                         |

| Protection Rating (typical)   | IP20                                          |

| Dimensions (approximate)      | Varies by frame size, consult datasheet       |

| Cooling Method (typical)      | Integrated fan, heatsink                      |

Core Features & Market Positioning

The SINAMICS S120 platform, and specifically the 6SL3720-1TG34-7AA3, distinguishes itself through its distributed intelligence and modular design, allowing for highly customized and scalable drive solutions. This module leverages advanced vector control algorithms for precise speed and torque regulation, even under challenging load conditions. Its robust construction and integrated safety functions position it as a premium choice for critical industrial processes where reliability and performance are paramount. The inclusion of the CIM for the CU320-2 controller simplifies network integration and enables sophisticated diagnostic capabilities, reducing downtime and optimizing operational efficiency.

Key Application Scenarios

This high-power single motor module is ideally suited for heavy-duty industrial applications. It finds extensive use in:

  Material Handling: Driving large conveyor systems, cranes, and automated storage and retrieval systems (AS/RS) where precise and powerful motor control is essential.  Machine Tools: Powering high-torque spindle drives and axis drives in CNC machines, requiring dynamic response and accuracy.  Pumping and Ventilation: Operating large industrial pumps and fans in chemical plants, water treatment facilities, and HVAC systems, especially where variable speed control for energy savings is needed.  Extrusion and Plastics: Driving extruders and other process machinery in the plastics industry demanding consistent torque and speed.

Practical System Integration Guidance

Integrating the SIEMENS 6SL3720-1TG34-7AA3 into an existing or new system requires careful planning. The module connects to the CU320-2 control unit via the Control Unit Interface (CIM), ensuring high-speed data exchange. Proper grounding and shielding are critical for minimizing electromagnetic interference (EMI). Power connections should adhere strictly to the 690V rating and the specified cable cross-sections to prevent overheating and ensure safety. Parameterization is typically performed using Siemens' STARTER commissioning software, which guides users through motor data setup, control modes, and safety function configuration. Ensure adequate ventilation is provided, as the 450kW rating generates significant heat.

Operation and Risk Mitigation

Safe and efficient operation of the SINAMICS S120 module relies on adhering to operational guidelines and proactively managing potential risks. Overload protection is a built-in feature, but users must ensure the motor and driven load do not exceed the module's 465A rating for extended periods. Regular checks of cooling fan operation and heatsink cleanliness are vital to prevent thermal shutdown. Common fault codes, such as overcurrent (F07001) or overvoltage (F07002), often indicate issues with the power supply, motor, or load. Referencing the SINAMICS S120 system manual for detailed fault code explanations and troubleshooting steps is crucial for rapid issue resolution. Implementing the integrated safety functions, such as Safe Torque Off (STO), is paramount for personnel safety during maintenance or emergency stops.

Scalability & Long-Term Value

The SIEMENS 6SL3720-1TG34-7AA3 is part of the highly scalable SINAMICS S120 platform, designed for long-term industrial value. Its modular architecture allows for expansion and integration with other SINAMICS drives and components, enabling seamless upgrades to meet evolving production demands. Compatibility with industry-standard fieldbuses (e.g., PROFINET, PROFIBUS) ensures easy integration into existing automation networks and Supervisory Control and Data Acquisition (SCADA) systems. Furthermore, its robust design and Siemens' commitment to industrial automation ensure ongoing support and availability of spare parts, safeguarding investments in critical machinery. The module's ability to support advanced control strategies also aligns with the growing trend towards Industrial Internet of Things (IIoT) and Industry 4.0 initiatives, facilitating data-driven optimization and predictive maintenance.

Frequently Asked Questions

1. What are the primary benefits of the SIEMENS 6SL3720-1TG34-7AA3?

This module offers exceptional power density and precise motor control. Its integrated CIM simplifies integration with the CU320-2 controller for advanced automation. It provides robust performance and high efficiency for demanding industrial tasks.

The modular design allows for flexible system expansion and adaptation to specific application needs. Siemens' reputation ensures reliability and long-term operational support.

Its advanced control algorithms deliver accurate speed and torque regulation, critical for high-performance machinery. This leads to improved product quality and process consistency.

2. How does the CIM in this module enhance system functionality?

The CIM acts as a vital communication bridge between the motor module and the CU320-2 control unit. It enables high-speed, efficient data exchange for sophisticated motion control. This integration simplifies wiring and reduces potential points of failure.

It facilitates advanced diagnostic capabilities, allowing for quicker identification and resolution of operational issues. This contributes significantly to minimizing unscheduled downtime.

The CIM supports seamless integration into industrial networks, allowing for centralized monitoring and control within broader automation architectures. This is key for Industry 4.0 implementations.

3. What are the typical industrial applications for a 450kW SINAMICS S120 module?

This high-power module is ideal for driving heavy-duty machinery like large industrial pumps and compressors. It’s frequently used in material handling systems such as cranes and large conveyor belts.

It is also deployed in manufacturing processes requiring significant torque, such as metal forming, plastics extrusion, and paper production lines. The 690V rating suits heavy industrial power distribution.

Applications demanding precise speed and torque control, like wind turbine pitch systems or rolling mills, also benefit from its capabilities. Its performance ensures operational accuracy.

4. What electrical considerations are critical during installation?

Ensure the power supply strictly matches the 690V rating of the module. Proper grounding and shielding are essential to prevent electromagnetic interference issues.

Select appropriate cable cross-sections for power connections to handle the 465A current capacity safely and efficiently. Refer to the manual for exact specifications.

Verify the integrity of all electrical connections before energizing the system to avoid short circuits or component damage. Professional installation is recommended.

5. How is the SIEMENS 6SL3720-1TG34-7AA3 commissioned?

Commissioning typically involves connecting the module to the CU320-2 controller and the motor. Power and control cabling must be correctly terminated.

Parameterization is performed using Siemens' STARTER commissioning software. This includes defining motor data, control modes, and safety settings.

Thorough testing under various load conditions is recommended to verify performance and ensure all safety functions are operational. This validates system setup.

6. What safety features are integrated into this SINAMICS S120 module?

The module commonly includes Safe Torque Off (STO) functionality, preventing unintended motor startup. This is a fundamental safety measure for personnel protection.

Other integrated safety functions, depending on the CU320-2 configuration, might include Safe Stop 1 (SS1) and Safe Speed Monitoring (SSM). Consult the system documentation.

Compliance with relevant safety standards (e.g., SIL, PL) is a key design consideration, enhancing the overall safety of automated processes. This ensures industry best practices.

7. How does this module contribute to energy efficiency?

Variable speed control allows the module to precisely match motor speed to process demand, significantly reducing energy consumption. This optimizes power usage.

Regenerative feedback capabilities can return energy to the grid during deceleration, further improving overall system efficiency. This captures otherwise wasted energy.

The efficient power electronics design minimizes internal energy losses, contributing to a lower overall energy footprint. This results in operational cost savings.

8. What is the role of the CU320-2 controller with this module?

The CU320-2 is the central intelligent controller for SINAMICS S120 drives. It manages motion control, communication, and system diagnostics for multiple drive modules.

It provides advanced control algorithms, positioning capabilities, and synchronization functions. This allows for complex automation tasks to be executed precisely.

The CU320-2 interfaces with higher-level control systems via fieldbus, enabling seamless integration into plant-wide automation networks. This offers centralized system oversight.

9. What are common troubleshooting steps for fault codes?

Upon encountering a fault, first identify the specific fault code displayed. Consult the SINAMICS S120 system manual for a detailed explanation of the code.

Common issues relate to power supply stability, motor winding integrity, or external communication problems. Perform visual inspections and basic electrical checks.

If the issue persists, consider resetting the drive after addressing the root cause or contact Siemens technical support for advanced diagnostics and resolution. Expert assistance may be required.

10. How scalable is the SINAMICS S120 platform for future growth?

The SINAMICS S120 platform is highly modular, allowing for the addition of more motor modules or other drive components as production needs expand. This offers inherent scalability.

Its compatibility with various communication protocols ensures that new machines or control systems can be easily integrated into the existing infrastructure. This future-proofs the investment.

Siemens' continuous development of the SINAMICS family provides pathways for future upgrades and integration with emerging digital technologies like IIoT and cloud analytics. This ensures long-term value.