SIEMENS 6SL3731-7TE41-4LE0 SINAMICS S120 Cabinet Modules 2 Active Line Module 900kW 1405A Left Side Mount Air Cooled

The SIEMENS 6SL3731-7 una serie SINAMICS S120 Cabinet Module offers robust performance for demanding industrial applications. This specific unit, the 6SL3731-7TE41-4LE0, is an Active Line Module designed for demanding applications, boasting a substantial 900kW power output and a 1405A current rating. Its air-cooled design and left-side mounting capability simplify integration into existing control cabinets, making it a prime choice for high-power variable speed drive systems.

Product Specifications

| Feature                  | Specification                                          |

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

| Product Number           | 6SL3731-7TE41-4LE0                                     |

| Product Family           | SINAMICS S120 Cabinet Modules                          |

| Type                     | Active Line Module                                     |

| Power Rating             | 900 kW                                                 |

| Current Rating           | 1405 A                                                 |

| Cooling                  | Air Cooled                                             |

| Mounting                 | Left Side Mount                                        |

| Voltage Range            | 400-480 V (3-phase)                                    |

| Control Unit Compatibility | CU320-2 DP/PN                                          |

| Protection Class         | IP20                                                   |

| Dimensions (approx.)     | 1930 x 1000 x 600 mm (H x W x D)                       |

| Weight (approx.)         | 470 kg                                                 |

Core Features & Market Positioning

The SIEMENS 6SL3731-7TE41-4LE0 stands out due to its advanced active line technology, which provides a regenerative feedback capability, significantly improving energy efficiency in applications with high dynamic loads. Unlike passive converters, active line modules actively contribute to the grid, reducing energy consumption and operational costs. This positions the SINAMICS S120 series as a premium solution for industries prioritizing performance, reliability, and sustainability. Its robust construction and Siemens' reputation for industrial automation excellence ensure long-term operational security.

Key Application Scenarios

This powerful module is ideally suited for heavy-duty industrial processes that demand precise speed and torque control for high-inertia loads. Typical applications include large fan and pump drives in process industries, main drives for extruders and mixers, and heavy lifting equipment in material handling and logistics. Its high power density also makes it suitable for coordinated drive systems in complex machinery, such as those found in paper mills, textile manufacturing, and metal processing plants.

Practical System Integration Guidance

Integrating the SIEMENS 6SL3731-7TE41-4LE0 requires careful planning, especially concerning power supply and control unit connections. The module connects to the main power via busbars and interfaces with the drive system through its integrated control interface, typically linked to a CU320-2 control unit. Proper ventilation and adherence to the specified clearances are critical for its air-cooled design to ensure optimal thermal management. Commissioning involves configuring drive parameters through the Siemens TIA Portal or STARTER software, which allows for detailed tuning of motor data, control loops, and safety functions.

Operation and Risk Mitigation

Safe operation of the SINAMICS S120 cabinet module prioritizes proper grounding, correct wiring, and adherence to voltage and current ratings. Operators must be trained on the system's emergency stop procedures and fault indications. Common fault codes, such as F07000 (Overcurrent) or F07700 (Device overtemperature), often indicate issues with motor load, cabling, or cooling. Addressing these promptly through systematic troubleshooting, guided by the Siemens technical documentation, is crucial for preventing equipment damage and ensuring operational continuity.

Scalability & Long-Term Value

The SINAMICS S120 platform, including the 6SL3731-7TE41-4LE0, offers excellent scalability and long-term value. Its modular design allows for system expansion by adding more drives or integrating additional modules to meet evolving production demands. Compatibility with Siemens' broader automation portfolio, including PLCs and IIoT platforms, enables seamless integration into smart factory environments and digitalized production workflows. This future-proofs investments by allowing for upgrades and enhanced connectivity as technology advances.

Frequently Asked Questions (FAQs)

What is the primary function of the SIEMENS 6SL3731-7TE41-4LE0?

This module serves as an Active Line Module in a SINAMICS S120 drive system. It efficiently manages power flow to motors and can feed energy back to the grid.

It is designed for high-power applications, delivering up to 900kW and 1405A. Its active technology enhances energy efficiency and grid compatibility.

The 6SL3731-7TE41-4LE0 ensures precise motor control, crucial for demanding industrial processes.

What are the key advantages of using an Active Line Module like the 6SL3731-7TE41-4LE0?

Active Line Modules offer significant energy savings by regenerating power. They reduce harmonic distortion on the power supply.

This technology improves power factor and reduces overall energy consumption. It's ideal for applications with frequent braking or overhauling torques.

Compared to passive solutions, active modules provide a cleaner power output and a more stable grid connection.

How does the air-cooled design of the 6SL3731-7TE41-4LE0 benefit installation?

The air-cooled system simplifies installation by eliminating the need for external cooling water infrastructure. It relies on internal fans and external airflow.

Adequate ventilation around the cabinet is essential for efficient heat dissipation. This ensures reliable operation and extends component lifespan.

This design is often preferred in environments where water cooling systems are impractical or pose a risk.

What type of applications is the 6SL3731-7TE41-4LE0 best suited for?

This module is ideal for high-power, dynamic industrial applications. Think large pumps, fans, extruders, and cranes.

It excels in sectors like chemical processing, mining, and heavy manufacturing. Precise control of large inertia loads is a key strength.

Its robust design ensures reliable operation in demanding industrial environments requiring high torque.

What are the power and current ratings for the 6SL3731-7TE41-4LE0?

The module delivers a substantial 900 kW of power output. It can handle a continuous current of 1405 A.

These high ratings make it suitable for very large electric motors and heavy-duty machinery. It ensures ample capacity for peak loads.

The 6SL3731-7TE41-4LE0 is engineered for substantial power delivery requirements.

What is the voltage range supported by this SINAMICS S120 module?

The 6SL3731-7TE41-4LE0 operates with a 3-phase voltage input of 400-480 V. This is standard for many industrial power grids.

Ensuring the supply voltage is within this range is critical for proper operation and module longevity. Always verify before connection.

This voltage range makes it compatible with most industrial power distribution systems.

How is the 6SL3731-7TE41-4LE0 typically commissioned?

Commissioning is performed using Siemens software like STARTER or TIA Portal. This involves parameter setup and motor data configuration.

Tuning of control loops and safety functions is done via the software interface. Proper configuration ensures optimal performance.

A qualified technician should perform commissioning to ensure correct setup and safe operation.

What are common troubleshooting issues for this module?

Overcurrent or overtemperature faults are common. These can stem from motor issues or inadequate cooling.

Wiring errors or incorrect parameter settings can also lead to operational problems. Always check connections and configuration first.

Consulting the Siemens fault code documentation is essential for diagnosing specific issues.

Is the 6SL3731-7TE41-4LE0 compatible with other Siemens automation products?

Yes, it is part of the SINAMICS S120 family and integrates well with Siemens controllers like PLCs. It's designed for a connected industrial environment.

It interfaces with Siemens engineering tools, facilitating system design and diagnostics. This ensures seamless integration.

Its compatibility supports building comprehensive automation solutions within the Siemens ecosystem.

What is the protection rating of the 6SL3731-7TE41-4LE0?

The module has an IP20 protection rating. This means it is protected against solid objects larger than 12.5 mm.

However, it is not protected against water ingress, so it must be installed in a clean, dry control cabinet. Proper enclosure is vital.

The IP20 rating is standard for cabinet-installed industrial automation components.