SIEMENS 6SL3720-1TG34-1AA3 SINAMICS S120 Single Motor Module with CIM for CU320-2 400kW 410A Integrated Drive 690V

The SIEMENS 6SL3720-1TG34-1AA3 SINAMICS S120 Single Motor Module, a robust 400kW integrated drive operating at 690V with a 410A rating and CIM for CU320-2, stands as a pinnacle of drive technology for demanding industrial applications. This module delivers exceptional performance, advanced control capabilities, and superior efficiency, making it an ideal solution for complex machinery in sectors such as material handling, process automation, and heavy manufacturing. Its integrated design simplifies installation and reduces footprint, while the advanced SINAMICS S120 architecture ensures precise motion control and dynamic response.

Product Specifications

| Specification               | Value                                                              |

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

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

| Product Family              | SINAMICS S120                                                      |

| Module Type                 | Single Motor Module with CIM (Control Interface Module)            |

| Rated Power                 | 400 kW                                                             |

| Rated Current               | 410 A                                                              |

| Supply Voltage              | 690 V                                                              |

| Control Unit Compatibility  | CU320-2                                                            |

| Protection Class            | IP20                                                               |

| Dimensions (H x W x D)      | 560 mm x 200 mm x 235 mm (approximate, subject to variation)       |

| Weight                      | Approximately 25 kg (subject to variation)                         |

| Ambient Temperature Range   | 0 °C to 45 °C (derating may apply)                                 |

| Cooling                     | Integrated fan                                                     |

| Communication Interfaces    | PROFINET, PROFIBUS (depending on CU320-2 configuration)            |

Core Features & Market Positioning

The SINAMICS S120 platform, exemplified by the 6SL3720-1TG34-1AA3, is positioned as a high-performance drive system designed for sophisticated automation tasks. Its key differentiator lies in its advanced control algorithms, which enable highly dynamic and precise motor control, crucial for applications requiring rapid acceleration/deceleration and tight speed/position regulation. The integrated Control Interface Module (CIM) streamlines system architecture by consolidating control and power functions, reducing wiring complexity and cabinet space. Siemens' reputation for reliability and robust engineering further solidifies its market leadership in the premium industrial drive segment, where uptime and performance are paramount.

Key Application Scenarios

This powerful 400kW SINAMICS S120 module is exceptionally well-suited for heavy-duty industrial applications demanding precise and powerful motor control. It excels in driving large conveyor systems in mining and logistics, where consistent torque and speed are critical for material throughput. In the process industry, it's invaluable for controlling large pumps and fans in critical infrastructure like water treatment or power generation, ensuring efficient and stable operation. Furthermore, its dynamic capabilities make it a strong choice for complex machine tools and high-speed packaging machinery requiring accurate positioning and rapid cycle times.

Practical System Integration Guidance

Integrating the SIEMENS 6SL3720-1TG34-1ủng34-1AA3 SINAMICS S120 module with a CU320-2 control unit requires careful attention to power and control connections. Ensure the 690V power supply is correctly phase-ordered and properly grounded. The CIM on the motor module facilitates communication with the CU320-2 via its dedicated interface, typically using an optical fiber or specific cable for high-speed data transfer. Proper parameterization within the SINAMICS STARTER engineering software is essential; this includes defining motor data, control modes (e.g., V/f, vector control, servo control), and communication settings for the chosen fieldbus. Always consult the official Siemens documentation for specific wiring diagrams and commissioning sequences to ensure safe and optimal operation.

Operation and Risk Mitigation

Operating the SIEMENS 6SL3720-1TG34-1AA3 requires adherence to safety protocols, particularly concerning the 690V supply. Ensure all personnel are trained and qualified to work with high-voltage equipment. Implement proper grounding and shielding to mitigate electromagnetic interference (EMI) and ensure system stability. Common fault codes often relate to motor overcurrent, overvoltage, or communication errors, which can typically be resolved by checking motor parameters, load conditions, and cable integrity. Regular maintenance, including fan checks and filter cleaning, is crucial for preventing overheating and ensuring continuous, reliable operation.

Scalability & Long-Term Value

The SINAMICS S120 platform, including the 6SL3720-1TG34-1AA3 module, offers significant scalability and long-term value, particularly within Siemens' broader automation ecosystem. Its modular design allows for expansion and integration with other SINAMICS drives and components, facilitating upgrades or modifications to existing systems without complete overhauls. Compatibility with industrial Ethernet protocols like PROFINET enables seamless integration into Industry 4.0 initiatives and IIoT platforms, allowing for advanced diagnostics, predictive maintenance, and centralized control. This future-proofing ensures that investments in SIEMENS 6SL3720-1TG34-1AA3 are protected, enabling adaptation to evolving automation requirements.

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Frequently Asked Questions

Q1: What is the primary function of the CIM in the SIEMENS 6SL3720-1TG34-1AA3?

The CIM, or Control Interface Module, acts as the bridge between the motor module's power section and the CU320-2 control unit. It handles the essential communication protocols and signal processing required for sophisticated drive control.

This module ensures that the control commands from the CU320-2 are accurately translated into the power electronics for motor operation. It also feeds back crucial motor and drive status information to the controller for monitoring and safety functions.

The integration of the CIM within the single motor module simplifies system architecture, reduces cabling complexity, and minimizes the physical footprint within control cabinets.

Q2: What are the typical applications for a 400kW, 690V SINAMICS S120 drive?

High-power applications requiring precise motor control are the primary target for this drive. This includes large industrial fans and pumps in process industries.

Heavy-duty material handling systems, such as those found in mining, ports, and large warehousing operations, benefit from its robust torque capabilities.

Complex machinery in manufacturing, like large machine tools, extruders, and high-speed packaging lines, also leverage the dynamic performance of this SINAMICS S120 module.

Q3: How do I connect the SIEMENS 6SL3720-1TG34-1AA3 to a CU320-2 control unit?

Physical connection typically involves a dedicated interface cable, often utilizing optical fibers for high-speed, interference-free data transmission. Consult the specific CU320-2 manual for the exact port and cable type.

Ensure the control unit is properly powered and initialized before establishing the physical link between the CIM and the CU320-2. Incorrect connection can lead to communication failures or damage.

After physical connection, the SINAMICS STARTER software is used to configure the communication parameters on both the CU320-2 and the motor module's CIM to establish a functional link.

Q4: What safety precautions are necessary when installing and operating this 690V drive module?

Always ensure the main power supply is completely de-energized and locked out before any installation or maintenance work. High voltages require specialized training and personal protective equipment.

Proper grounding of the drive, motor, and enclosure is critical to prevent electrical hazards and ensure reliable operation by mitigating EMI. Follow Siemens' grounding guidelines meticulously.

Implement emergency stop circuits and other safety interlocks as per machine safety directives and local regulations to protect personnel and equipment during operation.

Q5: Can the SIEMENS 6SL3720-1TG34-1AA3 be used with different types of motors?

Yes, the SINAMICS S120 platform is designed for versatile motor compatibility, supporting various types including asynchronous (induction) motors and synchronous (permanent magnet) motors.

Precise motor data entry during commissioning within the STARTER software is crucial for optimal performance and safety, regardless of motor type. This includes parameters like nominal voltage, current, power, and pole count.

The drive's advanced control modes, such as vector control, allow it to achieve high performance with both motor types, enabling dynamic speed and torque regulation.

Q6: What are common troubleshooting steps for issues with the SIEMENS 6SL3720-1TG34-1AA3?

Begin by checking error and warning codes displayed on the CU320-2 or via the STARTER software. These codes provide vital clues to the nature of the problem.

Verify power supply voltages, motor connections, and encoder feedback signals for any inconsistencies or loose connections that could cause faults.

Review the commissioned motor parameters and control settings to ensure they accurately reflect the connected motor and the application requirements.

Q7: How does the SINAMICS S120 system facilitate integration with Industry 4.0 and IIoT?

The integration of industrial Ethernet communication protocols, such as PROFINET, allows the drive to be connected to plant-wide networks. This enables data exchange with higher-level systems.

This connectivity facilitates real-time monitoring of drive performance, energy consumption, and operational status, which are key components of IIoT data acquisition strategies.

Advanced diagnostic capabilities and the potential for remote configuration and firmware updates further support smart manufacturing initiatives and predictive maintenance programs.

Q8: What is the role of the CU320-2 control unit with the 6SL3720-1TG34-1AA3?

The CU320-2 control unit serves as the "brain" of the drive system, responsible for executing motion control algorithms and managing the overall operation. It processes commands from the supervisory control system.

It communicates with the 6SL3720-1TG34-1AA3's CIM to regulate motor speed, position, and torque according to the programmed application requirements and dynamic feedback.

The CU320-2 also handles safety functions, diagnostics, and communication with higher-level automation systems via various fieldbus interfaces, making it central to system intelligence.

Q9: What is the significance of the 690V operating voltage for this drive module?

A 690V operating voltage allows for more efficient power transmission and reduces current for a given power output compared to lower voltage systems (e.g., 400V). This leads to smaller cable cross-sections and lower I²R losses.

This higher voltage is typically found in heavy industrial environments where large power demands are common, making it suitable for high-power machinery like those specified for this 400kW module.

Using 690V systems can also simplify power distribution architectures in large plants by requiring fewer transformers and reducing overall electrical infrastructure complexity for high-power loads.

Q10: How can I perform a basic setup for a single motor with the SIEMENS 6SL3720-1TG34-1AA3?

First, ensure the drive and motor are correctly wired and grounded, and the CU320-2 is powered. Then, launch the SINAMICS STARTER software and establish communication with the CU320-2.

Initiate an "Easy Startup" or guided commissioning process within STARTER. This wizard will prompt you to enter essential motor data (from the motor nameplate) and select the desired control mode (e.g., V/f or vector control).

After completing the guided setup and performing an auto-tuning or identification run, the drive should be ready for basic operation. Always save the project and perform functional tests under controlled conditions.