SIEMENS 6SL3735-7TG41-6MA3 SINAMICS S120 Active Line Connection Module 1700kW 1560A Compact 1200mm 690V Liquid Cooled Unit

The SIEMENS 6SL3735-7TG41-6MA3 SINAMICS S120 Active Line Connection Module stands as a cornerstone of advanced industrial automation, offering unparalleled power density and liquid-cooled efficiency. This 1700kW, 1560A, 690V unit, measuring a compact 1200mm, is engineered for demanding applications requiring robust motor control and a reduced footprint. Its active line connection technology ensures superior power quality and regenerative capabilities, making it an ideal choice for high-performance drives in heavy industry. Key advantages include its high power output in a compact design, efficient liquid cooling for sustained operation, and seamless integration within the SINAMICS S120 platform.

Product Specifications

| Feature                       | Specification                                            |

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

| Product Number                | 6SL3735-7TG41-6MA3                                       |

| Product Family                | SINAMICS S120 Active Line Connection Module              |

| Rated Power                   | 1700 kW                                                  |

| Rated Current                 | 1560 A                                                   |

| Voltage                       | 690 V                                                    |

| Cooling Method                | Liquid Cooled                                            |

| Unit Dimensions (W x H x D)   | 1200 mm (Width)                                          |

| Technology                    | Active Line Connection Module                            |

Core Features & Market Positioning

The SIEMENS 6SL3735-7TG41-6MA3 differentiates itself through its high power density, achieved via advanced liquid cooling, which allows for a significantly reduced physical footprint compared to air-cooled equivalents. This makes it exceptionally valuable in applications where space is at a premium. Its "Active Line Connection" technology signifies a sophisticated approach to power factor correction and grid interaction, enabling significant energy savings through efficient power regeneration back to the supply network. This positions the module not just as a power converter, but as an intelligent energy management component within an industrial facility, aligning with modern trends towards sustainable and efficient operations. The SINAMICS S120 platform is renowned for its flexibility and robustness, and this high-power module is a testament to Siemens' leadership in drive technology.

Key Application Scenarios

This high-performance module is engineered for the most demanding industrial environments. Its robust 1700kW power rating and 1560A current capacity make it ideally suited for heavy-duty applications such as large-scale rolling mills, high-capacity extruders, and critical pump and fan drives in power generation or water treatment facilities. The 690V rating is typical for heavy industrial power systems, facilitating efficient power delivery over longer distances. Furthermore, its liquid-cooled design ensures reliable operation under continuous heavy loads and in ambient conditions that might be challenging for air-cooled systems, making it a prime candidate for continuous process industries like steel, cement, and mining.

Practical System Integration Guidance

Integrating the SIEMENS 6SL3735-7TG41-6MA3 into existing or new systems requires careful planning, particularly concerning its liquid cooling requirements and high power output. The liquid cooling loop must be designed to handle the heat dissipation effectively, typically involving a dedicated circuit with a heat exchanger and appropriate coolant. For network integration, it connects to the SINAMICS S120 system, often utilizing a Control Unit such as the CU320-2, which manages the drive's functions and communication. Wiring must adhere strictly to the 690V power supply and motor connection standards, emphasizing safety and proper grounding. Commissioning involves parameterization via the Siemens TIA Portal or STARTER software, where drive characteristics, control modes, and safety functions are configured to match the specific application.

Operation and Risk Mitigation

Safe operation of the SIEMENS 6SL3735-7TG41-6MA3 relies on adhering to its operating parameters and maintenance schedule. Proper commissioning, including the correct setting of overload protection and thermal monitoring via the liquid cooling system, is paramount to prevent damage. Common operational risks include insufficient coolant flow, which can lead to overheating and potential shutdown or component failure. Users should monitor diagnostic messages via the drive's interface or the TIA Portal for any fault codes. Typical fault codes might relate to overcurrent, overvoltage, or thermal warnings, prompting immediate investigation into the cooling system or the load conditions. Regular inspection of coolant levels, pump operation, and connections ensures sustained performance and minimizes unexpected downtime.

Scalability & Long-Term Value

The SIEMENS 6SL3735-7TG41-6MA3, as part of the SINAMICS S120 platform, offers significant long-term value through its inherent scalability and backward/forward compatibility. This means it can be integrated into existing Siemens automation architectures, leveraging the common engineering framework provided by the TIA Portal for a unified approach to control and visualization. Its robust design and Siemens' commitment to product lifecycle support ensure its relevance for years to come. Furthermore, the active line connection technology supports grid-friendly operation, a crucial aspect for future-proofing industrial facilities against evolving energy regulations and embracing Industry 4.0 initiatives, particularly in smart grids and energy-efficient manufacturing.

Frequently Asked Questions

What are the primary benefits of the liquid-cooled design in the SIEMENS 6SL3735-7TG41-6MA3?

The liquid-cooled design offers superior thermal management, allowing for higher power density in a compact unit. This enables sustained high-performance operation under heavy loads, reducing the risk of thermal derating. It also contributes to a quieter operating environment and can extend the lifespan of electronic components.

Does this module offer regenerative braking capabilities?

Yes, as an Active Line Connection Module, it inherently supports regenerative operation, feeding energy back to the grid. This significantly improves energy efficiency and reduces operational costs by recovering energy that would otherwise be dissipated. It plays a key role in optimizing overall system power factor.

How does the 1700kW power rating impact its applications?

The 1700kW power rating signifies its suitability for extremely demanding industrial applications requiring high torque and speed control. This includes powering very large motors in sectors like steel production, mining, or large-scale material handling systems. It ensures ample capacity for peak loads and continuous operation.