SIEMENS 6SL3725-1TE37-5AA3 SINAMICS S120 Liquid Cooled Single Motor Module 400kW 745A Power Delivery 400V IP21

The SIEMENS 6SL3725-1TE37-5AA3 SINAMICS S120 Liquid Cooled Single Motor Module stands as a high-performance drive solution for demanding industrial applications, offering a robust 400kW power output and 745A current capability. This 400V IP21-rated module leverages advanced liquid cooling for superior thermal management, ensuring sustained operation and extended component life even under extreme load conditions. Its precise control capabilities make it ideal for applications requiring dynamic acceleration, deceleration, and accurate speed regulation, positioning it as a key component in modern automation systems.

Product Specifications

| Parameter               | Value                                                 |

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

| Product Number          | 6SL3725-1TE37-5AA3                                    |

| Series                  | SINAMICS S120                                         |

| Cooling                 | Liquid Cooled                                         |

| Type                    | Single Motor Module                                   |

| Rated Power Output      | 400 kW                                                |

| Rated Current           | 745 A                                                 |

| Voltage                 | 400 V                                                 |

| Protection Rating       | IP21                                                  |

| Control Type            | Vector Control, Servo Control                         |

| Communication Interface | DRIVE-CLiQ, PROFINET/PROFIBUS (optional)              |

| DC Bus Voltage          | 600 VDC                                               |

| Dimensions (H x W x D)  | Varies by configuration, consult documentation        |

| Weight                  | Varies by configuration, consult documentation        |

Core Features & Market Positioning

The SINAMICS S120 liquid-cooled platform excels in environments where heat dissipation is a critical concern, offering a significant advantage over air-cooled counterparts in terms of continuous power handling and compactness. This advanced thermal management system allows for higher power density, enabling smaller footprint solutions without compromising performance. The module's integration within the SINAMICS S120 family ensures seamless compatibility with other Siemens drive components and automation systems, providing a unified and efficient control architecture. Its robust design and Siemens' reputation for industrial reliability position the 6SL3725-1TE37-5AA3 as a premium choice for mission-critical applications demanding unwavering performance and longevity.

Key Application Scenarios

This powerful motor module is exceptionally suited for heavy-duty industrial machinery, including large material handling systems, high-speed printing presses, and complex metal forming equipment. Its precise control is vital for applications requiring dynamic speed and torque regulation, such as those found in the pulp and paper industry, textile manufacturing, and advanced robotics. The 400kW rating and 745A current capacity also make it a prime candidate for demanding pump and fan control applications where variable speed operation significantly enhances energy efficiency and process optimization.

Practical System Integration Guidance

Integrating the SIEMENS 6SL3725-1TE37-5AA3 SINAMICS S120 requires careful consideration of its liquid cooling system. Proper connection to an appropriate cooling circuit, including pumps and heat exchangers, is paramount for optimal performance and to prevent thermal overload. The module utilizes the DRIVE-CLiQ interface for direct connection to Siemens Control Units, facilitating high-speed digital communication. For network integration, optional PROFINET or PROFIBUS communication modules can be installed, allowing for seamless data exchange with higher-level control systems. Commissioning typically involves parameterization via Siemens TIA Portal or STARTER software, where motor data, control modes, and safety functions are configured.

Operation and Risk Mitigation

Operating the SINAMICS S120 liquid-cooled module demands adherence to established safety protocols. Ensure proper grounding and electrical isolation before performing any maintenance. The IP21 rating indicates protection against solid objects greater than 12.5mm and vertically falling water droplets; therefore, avoid environments with direct water spray or excessive moisture. Common operational concerns relate to the cooling system; regularly monitor coolant levels and flow rates to prevent overheating. Fault codes displayed on the operator panel or within the commissioning software provide critical diagnostic information. For instance, fault codes related to overtemperature or under-voltage necessitate immediate investigation into the cooling system or power supply, respectively.

Scalability & Long-Term Value

The SINAMICS S120 platform is designed for scalability, allowing for the expansion of drive systems by adding more single or multi-axis modules as application demands grow. Its compatibility with a wide range of Siemens motor types, including synchronous and asynchronous motors, provides flexibility in application design. The inherent integration capabilities within the Siemens industrial automation ecosystem, including IIoT connectivity through PROFINET, ensure that the 6SL3725-1TE37-5AA3 can be part of a smart, connected manufacturing environment, offering long-term value through enhanced data insights, predictive maintenance, and optimized operational efficiency.

FAQs

What is the primary advantage of liquid cooling in the SIEMENS 6SL3725-1TE37-5AA3?

Liquid cooling offers superior heat dissipation compared to air cooling. This enables higher power density and continuous operation under demanding loads.

It allows for more compact drive solutions by efficiently removing heat. This is crucial in space-constrained industrial environments.

The enhanced thermal management extends the operational lifespan of the drive module and its components, reducing maintenance costs.

What are the key technical specifications for this SINAMICS S120 module?

The module has a rated power output of 400 kW and a rated current of 745 A. It operates at a 400V supply voltage.

It features an IP21 protection rating, suitable for environments protected from direct water ingress. The cooling method is liquid-cooled.

Key communication interfaces include DRIVE-CLiQ, with optional PROFINET/PROFIBUS support for advanced networking.

How can I integrate the SIEMENS 6SL3725-1TE37-5AA3 into my existing automation system?

Connect the module to an appropriate liquid cooling circuit, ensuring proper coolant flow and temperature. Proper electrical grounding is also essential.

Utilize the DRIVE-CLiQ interface for connecting to Siemens Control Units. For broader network integration, install optional PROFINET or PROFIBUS communication modules.

Parameterize the drive using Siemens TIA Portal or STARTER software, configuring motor data, control modes, and safety functions for your specific application.