SIEMENS 6SL3735-1TG41-7LA3 SINAMICS S120 Basic Line Connection Module 1370kW 1650A Ultra High Power Liquid Cooled 690V

The SIEMENS 6SL3735-1TG41-7LA3 SINAMICS S120 Basic Line Connection Module is an ultra-high power liquid-cooled drive solution engineered for demanding industrial applications, boasting a substantial 1370kW power output and operating at 1650A and 690V. This advanced module offers exceptional performance and reliability, characterized by its robust liquid cooling system designed for efficient heat dissipation and sustained operation under extreme loads. Its integration into the SINAMICS S120 platform ensures seamless compatibility with Siemens' comprehensive drive ecosystem, providing a scalable and intelligent solution for modern industrial automation. The module's primary advantages lie in its ultra-high power density, advanced thermal management, and the inherent technological superiority of the SINAMICS S120 architecture.

Product Specifications

| Feature                | Specification                                    |

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

| Product Number         | 6SL3735-1TG41-7LA3                               |

| Product Line           | SINAMICS S120 Basic Line                         |

| Power Output           | 1370 kW                                          |

| Current Rating         | 1650 A                                           |

| Voltage Rating         | 690 V                                            |

| Cooling Method         | Liquid Cooled                                    |

| Type                   | Connection Module                                |

| Power Density          | Ultra High                                       |

| System                 | SINAMICS S120                                    |

Core Features & Market Positioning

The SIEMENS 6SL3735-1TG41-7LA3 distinguishes itself in the ultra-high power drive market through its advanced liquid-cooling technology, which is paramount for achieving sustained peak performance in applications that demand continuous high-power output. Unlike air-cooled counterparts, this liquid-cooled design significantly enhances thermal efficiency, enabling a more compact footprint and reducing the overall thermal load on the surrounding industrial environment. This positions the module as a superior choice for mission-critical operations where reliability and uptime are non-negotiable. Its integration within the SINAMICS S120 platform signifies a commitment to cutting-edge drive technology, offering sophisticated control algorithms and seamless connectivity for Industry 4.0 initiatives. The module's ability to handle extreme currents and voltages with such efficiency is a testament to Siemens' engineering prowess, setting a benchmark for high-power drive solutions.

Key Application Scenarios

This ultra-high power SINAMICS S120 module, the 6SL3735-1TG41-7LA3, is engineered for the most demanding industrial sectors. It is ideally suited for heavy industries such as mining, where it can power large conveyors, crushers, and grinding mills, often operating under continuous, high-load conditions. In the metals processing industry, it excels in driving rolling mills and large extrusion presses, requiring precise speed control and immense torque. Furthermore, the marine sector benefits from its robust liquid cooling for propulsion systems and heavy-duty cranes. The oil and gas industry can leverage this module for applications like large-scale compressors and drilling equipment, where extreme reliability and powerful performance are critical. Its 690V operating voltage and 1650A current rating make it a prime candidate for high-power pumps and fan applications in large industrial complexes and power generation facilities.

Practical System Integration Guidance

Integrating the SIEMENS 6SL3735-1TG41-7LA3 SINAMICS S120 module necessitates a carefully planned approach, particularly concerning its liquid-cooling system. A dedicated, closed-loop liquid cooling circuit must be established, comprising a coolant supply unit, heat exchanger, and appropriate piping, ensuring optimal operating temperatures are maintained. The module's high power rating requires robust power supply infrastructure, including appropriately sized switchgear, transformers, and cabling rated for 690V and the significant current demands. For optimal performance and diagnostic capabilities, it is crucial to connect the module to a SINAMICS S120 Control Unit, such as a CU320-2, using the DRIVE-CLiQ interface. This ensures seamless communication for parameterization, control, and monitoring, enabling advanced functionalities like synchronized operation and sophisticated diagnostics. Proper grounding and shielding are also paramount to mitigate electromagnetic interference in such a high-power environment.

Operation and Risk Mitigation

Safe and efficient operation of the SIEMENS 6SL3735-1TG41-7LA3 is contingent upon adherence to strict safety protocols and meticulous system maintenance. Before initial energization, a comprehensive pre-commissioning checklist must be completed, verifying all electrical connections, liquid cooling parameters, and control system configurations. The liquid cooling system's integrity is paramount; regular checks for leaks, coolant quality, and pump operation are essential to prevent thermal runaway and component damage. The module features integrated safety functions, including thermal monitoring and overcurrent protection, which should be configured according to the specific application's requirements. Familiarization with the SINAMICS S120 fault codes is critical for rapid troubleshooting; for instance, F07000 indicates a thermal overload, requiring immediate investigation of the cooling system or load conditions. Always ensure that personnel operating and maintaining the drive are adequately trained and follow established lockout/tagout procedures during maintenance.

Scalability & Long-Term Value

The SIEMENS 6SL3735-1TG41-7LA3 SINAMICS S120 module offers significant long-term value through its inherent scalability and integration within Siemens' broader industrial automation portfolio. Its modular design, a hallmark of the SINAMICS S120 platform, allows for straightforward expansion or adaptation to evolving production requirements. This can involve adding further drive units or integrating advanced control features as operational needs grow. Compatibility with Siemens' TIA Portal (Totally Integrated Automation Portal) facilitates seamless integration with other Siemens automation components, such as PLCs (e.g., SIMATIC S7) and HMIs, creating a unified and intelligent control architecture. This integration promotes advanced data analytics and IIoT capabilities, enabling predictive maintenance and process optimization, thereby maximizing the return on investment over the product's lifecycle.

FAQs

What is the primary function of the SIEMENS 6SL3735-1TG41-7LA3?

This module acts as a high-power connection unit for the SINAMICS S120 drive system. It facilitates the distribution of power to motor modules and manages the flow of energy in ultra-high power applications.

It is specifically designed for liquid-cooled configurations, enabling efficient thermal management. The module's robust design ensures reliable operation even under extreme load conditions encountered in heavy industries.

Its primary role is to enable the SINAMICS S120 platform to achieve exceptionally high power ratings, up to 1370kW, for demanding industrial machinery.

What are the key technical specifications of the 6SL3735-1TG41-7LA3?

The module operates at an ultra-high power of 1370kW and a rated current of 1650A. It is designed for a 690V supply voltage.

Its cooling method is liquid cooling, which is crucial for dissipating the significant heat generated by such high power levels. This ensures sustained performance and component longevity.

It is part of the SINAMICS S120 Basic Line, signifying its integration into a robust and scalable drive family known for advanced control and diagnostics.

What industries commonly use the SINAMICS S120 ultra-high power modules?

Heavy industries such as mining and metals processing widely adopt these modules. Applications include powering large conveyors, crushers, and rolling mills.

The oil and gas sector utilizes these for heavy-duty equipment like large compressors and drilling machinery. Marine applications also benefit from their power for propulsion and cranes.

General industrial applications requiring massive power and precise control, such as large pump and fan drives in power plants or industrial complexes, are also key users.

How is the liquid cooling system for this module typically set up?

A dedicated, closed-loop liquid cooling circuit is essential. This involves a coolant supply unit, heat exchangers, and appropriate piping to manage thermal loads.

Regular maintenance of the cooling circuit is vital. This includes monitoring coolant quality, checking for leaks, and ensuring the pump operates effectively to prevent overheating.

The system must be designed to maintain the module within its specified operating temperature range for optimal performance and to prevent premature component failure.

What are the advantages of liquid cooling for this SINAMICS S120 module?

Liquid cooling offers superior heat dissipation compared to air cooling, allowing for higher power density and a more compact design. This is crucial for ultra-high power applications.

It contributes to increased reliability and operational uptime by maintaining consistent, lower operating temperatures, reducing thermal stress on components.

This method of cooling is more energy-efficient for high-heat loads and can lead to reduced noise levels in the operational environment.

How does the SIEMENS 6SL3735-1TG41-7LA3 integrate into a larger control system?

This module connects to a SINAMICS S120 Control Unit, such as a CU320-2, via the DRIVE-CLiQ interface for communication and control.

Integration with TIA Portal allows seamless interaction with other Siemens automation devices like SIMATIC PLCs and HMIs, creating a unified system.

This integration enables advanced functionalities, including synchronized motor control, complex diagnostics, and the implementation of Industry 4.0 features.

What safety considerations are paramount when operating this high-power module?

Strict adherence to safety protocols, including proper grounding and shielding, is essential to manage high power levels and prevent electrical hazards.

Always follow lockout/tagout procedures during any maintenance or inspection activities to prevent accidental energization.

Ensure all personnel are adequately trained on the operation and safety features of the SINAMICS S120 drive system and its associated equipment.

What kind of troubleshooting is common for this type of industrial drive?

Common issues often relate to thermal management, such as F07000 (thermal overload), indicating potential problems with the liquid cooling system or excessive load.

Power supply irregularities or incorrect parameter settings can lead to fault codes related to voltage or current anomalies.

Communication errors between the control unit and the power module, often indicated by specific fault codes, require checking the DRIVE-CLiQ connections.

Can this module be used for applications other than those requiring ultra-high power?

While designed for ultra-high power, its precise control capabilities can be beneficial in applications requiring very accurate speed or position control, even if power demands are slightly lower.

Its robust design and advanced features offer a higher performance margin, potentially extending the lifespan and reliability in demanding, yet not strictly ultra-high power, applications.

However, using it for significantly lower power applications might not be cost-effective or optimal compared to using a smaller, appropriately sized SINAMICS S120 drive.

What is the long-term value proposition of investing in this SIEMENS drive module?

The SINAMICS S120 platform is known for its longevity and Siemens' commitment to ongoing support and upgrades, ensuring a good return on investment.

Its scalability allows the system to adapt to future production needs, preventing costly replacements as operational demands change over time.

Integration with IIoT and Industry 4.0 solutions via TIA Portal enables future-proofing and leveraging advanced data analytics for process optimization and predictive maintenance.