SIEMENS 6SL3735-7TE41-4MA3 SINAMICS S120 Active Line Connection Module 900kW 1405A Compact 1200mm Width without MCB Liquid Cooled

The SIEMENS 6SL3735-7KE41-4MA3 SINAMICS S120 Active Line Connection Module stands as a robust solution for high-power industrial drive applications. This liquid-cooled module boasts a 900kW power rating and a substantial 1405A current capacity, all within a compact 1200mm width, offering significant advantages in space-constrained environments. Its active line connection technology ensures superior power quality and grid compatibility, making it a cornerstone for demanding industrial processes.

Product Specifications

| Feature                     | Specification                                        |

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

| Product Number              | 6SL3735-7KE41-4MA3                                   |

| Series                      | SINAMICS S120                                        |

| Type                        | Active Line Connection Module                        |

| Power Rating                | 900 kW                                               |

| Continuous Current          | 1405 A                                               |

| Width                       | 1200 mm                                              |

| Cooling                     | Liquid Cooled                                        |

| Integrated MCB              | No                                                   |

| Voltage Range               | Typically 400-480V AC (refer to full documentation)  |

| Protection Class            | IP20 (standard enclosure)                            |

| Control Type                | Vector Control, Servo Control                        |

| Communication Interfaces    | PROFINET, PROFIBUS (depending on configuration)      |

Core Features & Market Positioning

The SINAMICS S120 Active Line Connection Module distinguishes itself through its advanced active line connection technology, providing a clean sinusoidal current waveform to the mains and actively feeding back regenerated energy. This capability significantly improves power factor and reduces harmonic distortion, leading to lower energy costs and compliance with stringent grid quality standards. Its liquid-cooled design allows for higher power density and efficient heat dissipation, enabling a compact footprint crucial for modern, space-optimized industrial facilities. This positions the 6SL3735-7KE41-4MA3 as a premium choice for applications demanding high performance, efficiency, and reliability in challenging industrial environments.

Key Application Scenarios

This 900kW SINAMICS S120 module is ideally suited for high-performance applications across various heavy industries. It excels in demanding tasks such as large press drives, sophisticated winding machines, high-speed extruders, and critical pump and fan applications where precise speed and torque control are paramount. The module's ability to handle significant regenerative energy makes it perfect for systems with frequent braking or deceleration cycles, like those found in automated material handling systems and large material processing equipment. Its robust construction and liquid cooling also ensure reliable operation in environments with high ambient temperatures or demanding duty cycles.

Practical System Integration Guidance

Integrating the SIEMENS 6SL3735-7KE41-4MA3 requires careful planning, particularly regarding its liquid cooling system and power connections. For liquid cooling, ensure a closed-loop system with appropriate coolant flow and temperature monitoring is established, utilizing the designated ports on the module. Power connections involve connecting the main incoming power to the line terminals and the motor outputs to the motor terminals, adhering strictly to the specified cable sizes and torque settings to prevent overheating and ensure safety. Communication setup typically involves configuring the module within a PROFIBUS or PROFINET network using Siemens' TIA Portal software, assigning appropriate network addresses and I/O configurations to enable seamless control and diagnostics.

Operation and Risk Mitigation

Operating the SINAMICS S120 Active Line Connection Module involves careful adherence to safety protocols and understanding its fault indications. Always ensure the module is properly grounded and that all safety interlocks are functional before energizing. Familiarize yourself with common fault codes displayed on the operator panel or within the diagnostic software; for instance, F101 indicates a general fault, while F7810 might point to a cooling system issue. Implementing regular maintenance checks on the liquid cooling system, including coolant quality and flow rates, is critical to prevent overheating and potential component damage.

Scalability & Long-Term Value

The SINAMICS S120 platform is designed for scalability, allowing the 6SL3735-7KE41-4MA3 to be integrated into larger, more complex drive systems. Its compatibility with other SINAMICS S120 components, such as control units and motor modules, enables flexible system expansion. Furthermore, Siemens' commitment to supporting its industrial automation products ensures long-term value through firmware updates and integration with Industry 4.0 initiatives. This means the module can be incorporated into smart manufacturing environments, leveraging IIoT capabilities for predictive maintenance and enhanced operational efficiency.

FAQs

What is the primary function of a SIEMENS 6SL3735-7KE41-4MA3?

This module acts as an active line connection for SINAMICS S120 drives. It ensures high power quality and actively feeds regenerated energy back to the grid.

Its key role is to provide a clean, sinusoidal current to the power supply. This minimizes harmonic distortion and improves the overall power factor of the system.

It is a critical component for applications requiring efficient energy management and compliance with grid code regulations in industrial settings.

How does the liquid cooling of the 6SL3735-7KE41-4MA3 benefit its operation?

Liquid cooling allows for a more compact design by efficiently dissipating heat. This enables higher power density within a smaller physical footprint.

It ensures optimal operating temperatures even under heavy load conditions or in hot environments. This enhances the reliability and lifespan of the module.

The efficient heat removal capability supports continuous operation and demanding duty cycles without performance degradation.

What are the main advantages of the active line connection technology in this module?

Active line connection provides superior power factor correction, typically close to unity. This reduces reactive power demand and lowers electricity costs.

It actively suppresses harmonic distortion, leading to cleaner power delivered to the grid. This helps in meeting stringent power quality standards and avoiding penalties.

Regenerated energy from the motor is fed back into the grid, improving overall system efficiency and reducing energy waste.

Can the 6SL3735-7KE41-4MA3 be used with different types of motors?

Yes, this module is designed to work with a wide range of AC motors, particularly asynchronous and synchronous motors. It supports advanced control modes for optimal motor performance.

The SINAMICS S120 platform is versatile, allowing integration with various motor configurations. Specific motor types and their parameters need to be configured in the drive system.

It is crucial to ensure the motor's power and voltage ratings are compatible with the module's capabilities for safe and efficient operation.

What safety precautions should be taken when installing the 6SL3735-7KE41-4MA3?

Always ensure the power supply is completely disconnected and locked out before any installation work. Follow proper grounding procedures to prevent electrical hazards.

Verify that the ambient conditions, including temperature and humidity, are within the module's specified operating limits. Ensure adequate ventilation or cooling system functionality.

Familiarize yourself with the emergency stop procedures and safety interlock requirements specific to the machinery controlled by this drive module.

How is system integration typically performed for this SINAMICS S120 module?

Integration involves connecting the module to the power supply and the motor according to the wiring diagrams. Proper cable selection and termination are critical.

Configuration is done using Siemens TIA Portal software, setting up communication protocols like PROFINET or PROFIBUS. Parameters for motor and application control are then entered.

It's essential to integrate the module within a complete SINAMICS S120 drive system, which may include control units and other power modules.

What kind of industrial applications is the 900kW 6SL3735-7KE41-4MA3 best suited for?

This high-power module is ideal for demanding heavy industry applications. Examples include large metal forming presses, extruders, and high-capacity material handling systems.

It is also well-suited for applications with significant regenerative energy, such as cranes, elevators, and large fan or pump drives that frequently decelerate.

The precise control capabilities make it perfect for complex manufacturing processes requiring accurate speed and torque regulation.

What are common troubleshooting steps for issues with the 6SL3735-7KE41-4MA3?

Begin by checking the diagnostic messages and fault codes displayed on the drive or in the commissioning software. These provide initial clues to the problem.

Verify all power and control connections are secure and correct according to the manual. Inspect the liquid cooling system for adequate flow and correct temperature.

Consult the official SIEMENS SINAMICS S120 documentation for detailed explanations of fault codes and recommended troubleshooting procedures.

How does this module contribute to energy efficiency in an industrial setting?

The active line connection technology enables nearly perfect power factor correction. This minimizes wasted energy due to reactive power, reducing overall electricity consumption.

By feeding regenerated energy back to the grid, it recovers energy that would otherwise be dissipated as heat. This significantly boosts the efficiency of the entire system.

Its precise control capabilities allow for optimal motor operation at all speeds, preventing energy wastage associated with inefficient speed control methods.

What is the significance of the "without MCB" designation on this product?

The "without MCB" means the module does not have an integrated Miniature Circuit Breaker. External protection devices must be specified and installed.

This allows for greater flexibility in selecting the appropriate type and rating of circuit protection based on specific system requirements and local regulations.

It implies that a separate, external circuit breaker or fuse arrangement is mandatory for proper overcurrent protection and safe operation of the connected power system.