SIEMENS 6SL3725-1TG38-1MA3 SINAMICS S120 Single Motor Module Compact 400mm Width 800kW 810A Liquid Cooled 690V

The SIEMENS 6SL3725-1TG38-1MA3 SINAMICS S120 Single Motor Module is a high-performance liquid-cooled drive solution engineered for demanding industrial applications. This compact unit, measuring 400mm in width, delivers a robust 800kW of power with an 810A current rating at 690V, making it ideal for heavy-duty machinery. Its advanced liquid cooling system ensures superior thermal management, allowing for consistent operation in extreme environments and maximizing power density. The SINAMICS S120 platform is renowned for its precision control, energy efficiency, and seamless integration capabilities, positioning the 6SL3725-1TG38-1MA3 as a leading choice for mission-critical motor control.

Product Specifications

| Parameter                | Value                       |

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

| Product Number           | 6SL3725-1TG38-1MA3          |

| Series                   | SINAMICS S120               |

| Type                     | Single Motor Module Compact |

| Width                    | 400mm                       |

| Rated Power              | 800kW                       |

| Rated Current            | 810A                        |

| Voltage                  | 690V                        |

| Cooling                  | Liquid Cooled               |

Core Features & Market Positioning

The SIEMENS 6SL3725-1TG38-1MA3 stands out with its exceptional power-to-size ratio, achieved through advanced liquid cooling technology. This allows for high continuous power output in a reduced footprint, a significant advantage in space-constrained industrial settings. Its integration within the SINAMICS S120 ecosystem provides access to sophisticated motion control functions, precise positioning, and advanced diagnostics, setting it apart from less integrated drive solutions. The liquid cooling also contributes to increased operational lifespan and reduced maintenance requirements compared to air-cooled alternatives, enhancing its long-term value proposition.

Key Application Scenarios

This robust motor module is engineered for applications demanding high torque and precise speed control, such as in the chemical processing industry for large pumps and mixers. It is also exceptionally well-suited for heavy manufacturing sectors, including metal forming, material handling, and advanced machine tools where consistent, powerful motor performance is paramount. The 690V rating and high current capacity make it a prime candidate for driving large extruders, crushers, and winders in paper and pulp production, as well as in demanding oil and gas applications.

Practical System Integration Guidance

Integrating the SIEMENS 6SL3725-1TG38-1MA3 into existing systems involves careful planning of the liquid cooling circuit, ensuring adequate flow rates and appropriate coolant composition. Connection to the SINAMICS S120 control units is typically achieved via digital or analog interfaces, with PROFIBUS or PROFINET being common industrial fieldbuses for seamless communication and parameterization. Commissioning requires utilizing Siemens' STARTER software for configuring motor data, control modes (e.g., V/f, vector control), and safety functions.

Operation and Risk Mitigation

Safe operation of the 6SL3725-1TG38-1MA3 hinges on adhering to proper liquid cooling loop maintenance and electrical isolation procedures. Users must ensure that the coolant temperature remains within specified operating limits to prevent thermal overload and potential component damage. Common troubleshooting involves monitoring fault codes displayed on the drive or communicated via the fieldbus, with critical errors often relating to overcurrent, overvoltage, or undervoltage conditions that require immediate attention and system inspection.

Scalability & Long-Term Value

The SINAMICS S120 platform, including the 6SL3725-1TG38-1MA3, offers significant scalability. It can be integrated into larger, distributed drive systems or expanded with additional motor modules and control units to meet growing production demands. Its compatibility with Siemens' industrial automation portfolio, including SIMATIC PLCs and IIoT platforms, ensures seamless integration into Industry 4.0 environments, facilitating data-driven optimization and predictive maintenance strategies.

FAQs

What are the primary advantages of the SIEMENS 6SL3725-1TG38-1MA3?

This drive offers superior power density due to its liquid cooling. It provides precise motor control and high efficiency. Its compact design saves valuable panel space.

How is the liquid cooling system maintained for the 6SL3725-1TG38-1MA3?

Regularly check coolant levels and purity. Monitor coolant temperature against specifications. Ensure the circulation pump is functioning correctly.

What are common fault codes for the SINAMICS S120 module?

Overcurrent faults (e.g., F7400) indicate excessive motor current. Overvoltage faults (e.g., F7410) suggest voltage spikes. Thermal overload warnings (e.g., F7401) point to heat issues.

Can the 6SL3725-1TG38-1MA3 be used with different motor types?

Yes, it supports various AC motor types. Configuration via STARTER software is essential. Ensure motor parameters match drive capabilities.

What safety features are integrated into this SINAMICS S120 module?

It includes Safe Torque Off (STO) functionality. This prevents unexpected motor movement during maintenance. Other safety functions can be configured.

What is the typical voltage rating for this industrial drive?

This specific model operates at 690V. This high voltage rating suits heavy-duty industrial power systems. Always verify site voltage compatibility.

How does the liquid cooling impact the module's performance?

Liquid cooling enables higher continuous power output. It dissipates heat more effectively than air cooling. This leads to better thermal stability and reliability.

What fieldbus communication protocols are supported by the SINAMICS S120 series?

Common protocols include PROFIBUS and PROFINET. These allow for robust industrial network integration. Other options may be available.

What software is needed for configuring the 6SL3725-1TG38-1MA3?

Siemens STARTER commissioning software is required. It facilitates parameterization and diagnostics. TIA Portal can also be used for integration.

How does the compact design of this module benefit an industrial setup?

A compact design allows for smaller control cabinets. This saves valuable floor space in a facility. It also simplifies installation in tight areas.