SIEMENS 6SL3735-7TE36-1MA3 SINAMICS S120 Active Line Connection Module Compact 380kW 605A without MCB 1200mm Width Liquid Cooled

The SIEMENS 6SL3735-7te36-1ma3 SINAMICS S120 Active Line Connection Module Compact offers a robust 380kW power output and 605A current rating, featuring essential liquid cooling for enhanced thermal management. Its primary advantages lie in its high-performance active line connection technology, compact design, and efficient power factor correction, making it a superior choice for demanding industrial applications. This module is engineered for optimal efficiency and reliability, minimizing energy consumption and operational costs.

Product Specifications

| Feature                     | Specification                                  |

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

| Product Number              | 6SL3735-7TE36-1MA3                             |

| Product Family              | SINAMICS S120                                  |

| Module Type                 | Active Line Connection Module Compact          |

| Rated Power Output          | 380 kW                                         |

| Rated Current               | 605 A                                          |

| Cooling Method              | Liquid Cooled                                  |

| Width                       | 1200 mm                                        |

| Integrated MCB              | No                                             |

| Input Voltage               | 400 V AC                                       |

| Output Voltage              | 690 V AC                                       |

| Efficiency                  | High (typically >97%)                          |

| Power Factor Correction     | Active (close to unity)                        |

| Protection Class            | IP20                                           |

| Operating Temperature Range | 0°C to 45°C (liquid cooling dependent)         |

| Dimensions (H x W x D)      | Varies based on enclosure, consult datasheet |

Core Features & Market Positioning

The SIEMENS 6SL3735-7te36-1ma3 distinguishes itself through its active line connection technology, which actively feeds regenerated energy back into the grid, significantly improving overall system efficiency and reducing energy costs. This contrasts with passive line modules and offers superior power quality by minimizing harmonic distortion without the need for external filters. Its liquid-cooled design is a critical differentiator for high-power density applications, enabling a more compact footprint and quieter operation compared to air-cooled counterparts. This positions the SINAMICS S120 module as a premium solution for industries prioritizing energy efficiency, high performance, and space optimization.

Key Application Scenarios

This active line connection module is ideally suited for high-performance motion control applications across various industrial sectors. It is frequently deployed in the manufacturing industry for driving complex machinery, automated assembly lines, and robotic systems where precise speed and torque control are paramount. In the oil and gas sector, it finds application in pumps, compressors, and drilling equipment operating in demanding environments. The mining industry utilizes its robust performance for conveyor systems, crushers, and material handling equipment. Furthermore, its suitability for water and wastewater treatment plants driving large pumps and mixers, and in the marine industry for propulsion and auxiliary systems, underscores its versatility and reliability in critical infrastructure.

Practical System Integration Guidance

Integrating the SIEMENS 6SL3735-7te36-1ma3 into existing SINAMICS S120 drive systems is streamlined due to its modular design. It typically connects to the main infeed and subsequent motor modules via a busbar system. Ensure proper liquid cooling circulation is established before energizing the unit, verifying coolant flow rate and temperature meet specifications to prevent thermal overload. When connecting to the mains, ensure the upstream circuit breaker or fuse protection is correctly sized according to the 605A rating and relevant local electrical codes. Commissioning involves configuring the SINAMICS S120 control unit to recognize the active line module, setting operational parameters like voltage, current limits, and regenerative energy feedback settings via STARTER or SCOUT commissioning software.

Operation and Risk Mitigation

Proper operation of the SIEMENS 6SL3735-7te36-1ma3 necessitates adherence to the specified operating temperature range and ensuring the liquid cooling system functions optimally. Monitor coolant pressure, temperature, and flow rates regularly. Avoid operation outside the specified input voltage range to prevent damage. Key safety precautions include ensuring all covers are securely fastened before operation and that personnel are trained in handling high-voltage equipment. Common faults relate to cooling system failures (e.g., low flow, leaks) or grid disturbances. For instance, a "Drive off" fault might indicate an issue with the control voltage supply, while "Overcurrent" faults can point to motor issues or incorrect parameter settings. Always consult the SINAMICS S120 system manual for detailed fault code explanations and troubleshooting steps.

Scalability & Long-Term Value

The SINAMICS S120 platform, including the 6SL3735-7te36-1ma3 module, is designed for scalability and long-term value. Its inherent modularity allows for easy expansion of drive capacity by adding more motor modules or infeed units as application demands grow. Compatibility with other SINAMICS S120 components ensures seamless integration into existing or future Siemens automation architectures. This active line module's ability to feed energy back into the grid enhances its long-term economic value by reducing energy bills and contributing to sustainability goals. Furthermore, its integration potential with the Industrial Internet of Things (IIoT) and digital twin concepts through Siemens' MindSphere platform allows for advanced diagnostics, predictive maintenance, and optimized operational performance over the product's lifecycle.

Frequently Asked Questions (FAQs)

1. What is the primary function of the SIEMENS 6SL3735-7te36-1ma3 module?

This module acts as an active line connection, providing a clean and efficient power interface to the SINAMICS S120 drive system. It actively manages the power flow, enabling energy regeneration back to the grid.

Its core purpose is to ensure high power quality and excellent power factor correction. This advanced functionality minimizes grid disturbances and optimizes overall system energy efficiency.

The module also provides the necessary DC bus voltage for the connected motor modules, acting as the central power hub for the drive system.

2. How does the liquid cooling system of this module benefit performance?

Liquid cooling allows for superior heat dissipation, enabling a more compact design for high power outputs. This efficient thermal management prevents overheating and ensures consistent performance under heavy loads.

By removing heat effectively, the liquid cooling system contributes to a longer operational lifespan for the module. It also reduces the need for high-volume, noisy air cooling systems in industrial environments.

The consistent operating temperatures facilitated by liquid cooling are crucial for maintaining the precise control and reliability demanded by advanced motion control applications.

3. What are the key advantages of using an active line connection module over a passive one?

Active line modules offer superior grid compatibility by actively correcting power factor and reducing harmonic distortion. This eliminates the need for bulky, expensive external harmonic filters.

They enable energy regeneration, meaning that energy produced during braking operations can be fed back into the power supply. This significantly improves overall system energy efficiency and reduces operating costs.

Active modules provide a more stable DC bus voltage, which can lead to improved dynamic performance and control precision of the connected motor modules.

4. What are typical applications for the SINAMICS S120 Active Line Connection Module Compact?

This module is ideal for high-performance motion control tasks in industries like manufacturing and automation. It powers applications requiring precise speed and torque regulation, such as robotics.

It is widely used in sectors like oil and gas, and mining for driving heavy machinery such as pumps, compressors, and conveyor systems. Its robust design handles demanding operational environments.

The module also finds use in critical infrastructure such as water treatment plants and in marine applications for propulsion and auxiliary systems.

5. What are the essential considerations for integrating the 6SL3735-7te36-1ma3 into a system?

Proper setup of the liquid cooling system, including flow and temperature monitoring, is critical before energization. Ensure electrical connections and upstream protection are correctly sized according to specifications.

Commissioning requires software configuration to recognize the module and set operational parameters. This is typically done using Siemens' STARTER or SCOUT engineering tools.

Always consult the official SIEMENS SINAMICS S120 system manual for detailed integration, wiring diagrams, and safety guidelines specific to your configuration.

6. How does the 1200mm width impact installation and system design?

The 1200mm width indicates a substantial physical footprint, necessitating adequate space for installation and maintenance within the control cabinet or enclosure. This width accommodates the internal components required for 380kW power handling and liquid cooling.

This generous width can also simplify cabling and connection management, providing more room for busbars and power connections. It may also allow for better airflow around the module, even with liquid cooling, aiding overall thermal management.

When designing control cabinets, the module's dimensions must be precisely accounted for to ensure proper fit and access for service personnel. It dictates a significant portion of the cabinet's layout.

7. What types of faults are commonly associated with active line connection modules?

Common faults often relate to the active line module's interaction with the power grid, such as overvoltage or undervoltage conditions, and grid imbalances. Issues with internal power electronics can also trigger faults.

Problems with the liquid cooling system are frequent causes of alarms and faults. This includes low coolant flow, high coolant temperature, or leaks within the cooling circuit, which can lead to thermal shutdowns.

Control voltage supply issues or communication errors between the module and the SINAMICS S120 control unit can also result in specific fault codes requiring investigation.

8. Can this module be used with older SINAMICS S120 generations?

Compatibility with older SINAMICS S120 generations depends on the specific firmware versions and communication protocols supported. Siemens generally maintains backward compatibility within product families.

It's essential to consult the SINAMICS S120 system manuals and compatibility matrices provided by Siemens to confirm seamless integration. Incorrect pairings can lead to operational issues or failure to commission.

For optimal performance and to leverage the latest features, it is advisable to use the 6SL3735-7te36-1ma3 with current SINAMICS S120 control units and firmware.

9. What are the benefits of its "compact" design despite the 1200mm width?

The "compact" designation in this context refers to its high power density relative to its performance. It integrates the active line connection functionality into a single unit, reducing the need for multiple external components.

Compared to older technologies or modular setups requiring separate components for line filtering and regeneration, this integrated "compact" design simplifies installation and reduces overall system footprint. The liquid cooling further enables higher power in a given volume.

This integrated approach minimizes cabling complexity and potential points of failure, contributing to a more robust and space-efficient overall drive solution, even with its significant physical dimensions for high power.

10. How does the absence of an MCB (Miniature Circuit Breaker) affect system protection?

The absence of an integrated MCB means that external protective devices, such as main circuit breakers or fuses, must be specified and installed upstream of the module. This allows for customized protection coordination based on the overall system design.

It provides flexibility in selecting protective devices that precisely match the required current ratings and fault-clearing capabilities for the installation. This is standard practice for high-power industrial equipment.

The responsibility for selecting and installing appropriate upstream protection lies with the system designer and installer. They must ensure compliance with all relevant electrical codes and standards for safe operation.