SIEMENS 6SL3725-1TE41-2AA3 SINAMICS S120 Liquid Cooled Single Motor Module 710kW 1260A for 480V Systems IP21

The SIEMENS 6SL3725-1TE41-2AA3 SINAMICS S120 Liquid Cooled Single Motor Module is a high-performance drive solution designed for demanding industrial applications requiring precise motor control and robust thermal management. This single-motor module boasts a substantial 710kW power rating and a continuous current of 1260A, making it suitable for 480V systems. Its IP21 enclosure provides essential protection against solid objects and falling water, while the liquid cooling system ensures optimal operating temperatures even under extreme loads, significantly enhancing reliability and extending service life. This advanced design positions the SINAMICS S120 module as a superior choice for complex machinery and continuous process operations where efficiency and uptime are paramount.

Product Specifications

| Parameter                 | Value                               |

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

| Product Number            | 6SL3725-1TE41-2AA3                  |

| Series                    | SINAMICS S120                       |

| Cooling                   | Liquid Cooled                       |

| Motor Type                | Single Motor Module                 |

| Rated Power (kW)          | 710                                 |

| Continuous Current (A)    | 1260                                |

| System Voltage (V)        | 480                                 |

| Ingress Protection Rating | IP21                                |

Core Features & Market Positioning

The SINAMICS S120 liquid-cooled module distinguishes itself through its superior thermal dissipation capabilities, a critical factor for high-power applications. Unlike air-cooled counterparts, the liquid cooling system actively removes heat, allowing for higher power density and sustained peak performance without thermal throttling. This enhanced thermal management translates directly into increased operational reliability and reduced maintenance requirements, positioning the 6SL3725-1TE41-2AA3 as a premium component for mission-critical industrial processes. Its integration within the broader SINAMICS S120 platform also offers seamless compatibility with other Siemens automation products, facilitating comprehensive system solutions.

Key Application Scenarios

This 710kW SINAMICS S120 module is ideally suited for a wide array of heavy-duty industrial applications. It excels in driving large extruders, presses, and high-capacity pumps in sectors such as chemical processing, material handling, and manufacturing. The module's robust current rating and precise control are essential for applications demanding dynamic response and consistent torque, including metal forming machinery and large-scale textile production. Furthermore, its liquid-cooled design makes it a compelling choice for enclosed environments or facilities where heat generation needs to be effectively managed and contained, ensuring optimal performance and safety.

Practical System Integration Guidance

Integrating the SIEMENS 6SL3725-1TE41-2AA3 requires careful consideration of its liquid cooling infrastructure. A closed-loop cooling system, typically involving a heat exchanger, pump, and coolant reservoir, is essential for proper operation. Electrical connections should adhere strictly to the voltage and current ratings specified, utilizing appropriately sized conductors and protective devices. For control integration, the SINAMICS S120 uses the STARTER commissioning software, which allows for detailed parameter configuration, motor data optimization, and diagnostic setup. Ensure proper grounding and shielding are implemented to mitigate electromagnetic interference (EMI) in a high-power drive environment.

Operation and Risk Mitigation

Safe operation of the SINAMICS S120 liquid-cooled module necessitates adherence to all safety protocols, including lockout/tagout procedures during maintenance and ensuring the cooling system is fully operational before energizing the drive. Users should be aware of fault codes displayed on the drive's operator panel or within the STARTER software, as these provide critical diagnostic information. Common issues can relate to over-temperature conditions if the cooling circuit is compromised, or overcurrent faults if the motor load exceeds limits or if there's an issue with motor tuning. Regular inspection of coolant levels and pump operation is crucial to prevent thermal runaway.

Scalability & Long-Term Value

The SINAMICS S120 platform is engineered for scalability, allowing users to expand their automation systems by adding more drive modules or integrating with higher-level control systems like Siemens SIMATIC PLCs. The 6SL3725-1TE41-2AA3, as part of this ecosystem, benefits from Siemens' commitment to future-proofing, with ongoing software updates and support for Industry 4.0 initiatives. Its robust construction and advanced cooling technology contribute to a longer operational lifespan, reducing the total cost of ownership. Compatibility with various communication protocols ensures it can be integrated into modern smart factory environments, supporting data acquisition and predictive maintenance strategies.

Frequently Asked Questions

What is the primary advantage of liquid cooling for the SINAMICS S120 module?

Liquid cooling offers superior heat dissipation compared to air cooling. This allows for higher power density and sustained performance under heavy loads.

This advanced thermal management enhances component longevity and system reliability. It is crucial for preventing thermal throttling and ensuring consistent operation.

The system is ideal for enclosed spaces or environments where heat exhaust is a concern. It also contributes to quieter operation by reducing fan noise.

How do I connect the liquid cooling system to the 6SL3725-1TE41-2AA3 module?

A closed-loop system with a heat exchanger, pump, and coolant reservoir is required. Ensure the coolant is properly circulated through the module's designated ports.

Refer to the Siemens installation manual for specific connection diagrams and coolant specifications. Proper fluid type and flow rate are critical for effective cooling.

Regularly check coolant levels, pump functionality, and for any signs of leaks in the cooling circuit. Routine maintenance of the cooling system is paramount.

What are the typical applications for a 710kW SINAMICS S120 drive?

This high-power module is used for demanding industrial machinery like large extruders and presses. It is also suitable for high-capacity pumps in process industries.

Sectors benefiting from this module include chemical processing, advanced manufacturing, and heavy material handling. Its precise control is vital for metal forming and large-scale textile equipment.

The IP21 rating and liquid cooling make it suitable for environments requiring robust thermal management and protection against splashes. It ensures reliable operation in challenging industrial settings.

What software is used for commissioning the SIEMENS 6SL3725-1TE41-2AA3?

Siemens' STARTER commissioning software is utilized for configuring the drive. It allows for detailed parameter setup and motor data optimization.

STARTER provides tools for system diagnostics and performance tuning. It is an integral part of the SINAMICS S120 setup process.

This software facilitates efficient setup, reducing commissioning time and ensuring optimal drive performance from the start.

What safety precautions should be taken when operating this liquid-cooled drive?

Always follow lockout/tagout procedures before performing any maintenance. Ensure the liquid cooling system is fully operational before powering up the drive.

Verify that all electrical connections are secure and comply with current and voltage ratings. Implement proper grounding and shielding to prevent electrical hazards and EMI.

Understand and monitor drive status and fault codes displayed by the unit or software. Familiarize yourself with emergency stop procedures for the controlled machinery.

Can this module be integrated with other Siemens automation products?

Yes, the SINAMICS S120 is part of the Siemens automation ecosystem. It integrates seamlessly with SIMATIC PLCs and other automation components.

This integration allows for comprehensive control solutions for complex industrial processes. It leverages shared diagnostic and communication capabilities.

Compatibility with Siemens' TIA Portal further enhances system design and engineering efficiency.

What are common fault codes for the SINAMICS S120 and how are they addressed?

Over-temperature faults usually indicate issues with the liquid cooling system. Check coolant levels, flow rates, and pump operation.

Overcurrent faults can signal motor overload, wiring issues, or incorrect motor parameterization. Verify the motor and load conditions.

Check the Siemens fault code manual for specific error interpretations and recommended corrective actions. Always consult documentation for precise troubleshooting steps.

What is the role of IP21 protection in this module?

IP21 protection signifies resistance to vertically falling water drops. It offers basic protection against moisture ingress.

This rating is suitable for general industrial environments where occasional water splashes or condensation may occur. It does not protect against high-pressure jets or immersion.

While providing basic protection, it's essential to ensure the module is not exposed to excessive moisture or corrosive substances beyond its rating.

How does liquid cooling improve the long-term value of the 6SL3725-1TE41-2AA3?

It reduces component stress by maintaining optimal operating temperatures. This significantly extends the lifespan of the drive electronics.

Lower operating temperatures lead to increased reliability and fewer unexpected downtime events. This minimizes maintenance costs and maximizes productivity.

The enhanced durability translates into a lower total cost of ownership over the life of the equipment. It supports consistent high performance over many years.

What are the benefits of using the SINAMICS S120 platform for scalability?

The SINAMICS S120 platform allows for easy expansion of drive systems. New modules can be added to increase capacity or control more axes.

It supports integration with higher-level control systems, enabling complex automation architectures. This adaptability ensures future growth possibilities.

The platform's modular design and software compatibility simplify upgrades and retrofits, future-proofing investments.