SIEMENS 6SL3731-7TE35-6RE0 SINAMICS S120 Cabinet Modules 2 Active Line Module 355kW 560A Right Mounted Unit 400V

The SIEMENS 6SL3731-7KE35-6RE0 SINAMICS S120 Cabinet Module stands as a robust solution for demanding industrial automation tasks, offering superior power density and advanced control capabilities. This active line module, rated at 355kW and 560A for 400V systems, integrates seamlessly into complex drive systems, providing high-efficiency power regeneration and a minimized carbon footprint. Its intelligent design prioritizes operational reliability, enhanced safety features, and future-proof connectivity, positioning it as a cornerstone for modern manufacturing environments seeking peak performance and sustainability.

Product Specifications

| Parameter                | Value                                   |

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

| Product Number           | 6SL3731-7KE35-6RE0                      |

| Product Series           | SINAMICS S120 Cabinet Module            |

| Type                     | Active Line Module                      |

| Power Rating             | 355 kW                                  |

| Current Rating           | 560 A                                   |

| Voltage                  | 400 V                                   |

| Mounting                 | Right Mounted Unit                      |

| Line Frequency           | 50/60 Hz                                |

| Protection Class         | IP20                                    |

| Dimensions (H x W x D)   | [Data not directly available, varies by configuration] |

| Weight                   | [Data not directly available, varies by configuration] |

| Operating Temperature    | 0°C to +45°C (derating above +40°C)     |

| Storage Temperature      | -20°C to +70°C                          |

| Control System           | Integrated control units                |

Core Features & Market Positioning

The SINAMICS S120 Cabinet Module distinguishes itself through its advanced active infeed technology, enabling energy regeneration back to the grid, which significantly reduces overall energy consumption and operational costs. This regenerative capability is a key differentiator in the market, particularly for applications with frequent braking cycles. The module's integrated safety functions, such as Safe Torque Off (STO), enhance operational security and reduce the need for external safety components. Siemens' robust engineering ensures high reliability and a long service life, a critical factor for industrial investments. Its positioning as a high-performance, energy-efficient solution makes it ideal for sophisticated machine designs and demanding industrial processes.

Key Application Scenarios

This SIEMENS 6SL3731-7KE35-6RE0 SINAMICS S120 unit is exceptionally suited for heavy-duty applications across various industries. It is commonly deployed in machine tools for precise motion control, in packaging machinery for high-speed and accurate operations, and in the printing industry for consistent speed and torque requirements. Furthermore, its robust performance profile makes it a prime choice for material handling systems, automated logistics, and high-performance drives in renewable energy applications where energy recovery is paramount.

Practical System Integration Guidance

Integrating the SINAMICS S120 Cabinet Module requires careful planning, particularly regarding power connections and control signal wiring. The 400V power supply must be connected to the designated terminals, adhering to local electrical codes and safety standards. Control signals for motor feedback, digital inputs/outputs, and communication interfaces (e.g., PROFINET, PROFIBUS) should be wired according to the specific control unit configuration and the overall system architecture. Commissioning typically involves parameterization through the SINAMICS STARTER commissioning software, where motor data, control modes, and safety functions are configured.

Operation and Risk Mitigation

Safe operation of the SIEMENS 6SL3731-7KE35-6RE0 module necessitates adherence to its operating manual, particularly concerning environmental conditions and power handling. Overheating can be mitigated by ensuring adequate ventilation within the cabinet and operating within the specified ambient temperature range; derating is required above +40°C. Common troubleshooting involves checking power supply stability, verifying control signal integrity, and reviewing error logs via the HMI or STARTER software. Critical fault codes, such as those related to overcurrent or internal module faults, should be addressed by qualified personnel, often involving a thorough system diagnostic and potential component replacement.

Scalability & Long-Term Value

The SINAMICS S120 platform is designed for scalability, allowing for the expansion of drive systems by adding more motor modules or control units as production demands increase. The 6SL3731-7KE35-6RE0 module integrates seamlessly with other SINAMICS S120 components and Siemens' broader automation portfolio, including PLCs and HMIs, facilitating coherent system upgrades. Its compatibility with industrial communication protocols supports integration into Industry 4.0 initiatives and digital factory concepts, ensuring long-term relevance and maximizing return on investment through future-proof technology.

Frequently Asked Questions

What is the primary function of the SIEMENS 6SL3731-7KE35-6RE0?

This module serves as an active line infeed for the SINAMICS S120 drive system, providing power and control. It regenerates energy back to the supply grid.

This active infeed unit ensures efficient power usage and harmonic mitigation. It is rated for 355kW and 560A at 400V.

The SIEMENS 6SL3731-7KE35-6RE0 is crucial for high-performance motor control applications requiring precise dynamic response.

What are the key technical specifications of the 6SL3731-7KE35-6RE0?

It is a 355kW, 560A, 400V active line module. Its product number is 6SL3731-7KE35-6RE0.

The unit is designed for cabinet integration, often mounted on the right side. It operates within a 50/60 Hz line frequency.

Protection class is IP20, with an operating temperature range of 0°C to +45°C.

How does the 6SL3731-7KE35-6RE0 contribute to energy efficiency?

Its active infeed technology allows it to feed excess energy generated during braking back into the power grid. This regenerative capability significantly reduces overall energy consumption.

By returning energy instead of dissipating it as heat (like passive inverters), it lowers operational costs and carbon footprint. This makes it ideal for applications with frequent deceleration.

The SINAMICS S120 active line module optimizes power factor and reduces harmonic distortion, further contributing to grid efficiency and compliance.

What industries commonly use the SINAMICS S120 Cabinet Module?

This module finds extensive use in machine building and manufacturing sectors. Specific examples include packaging and printing machinery.

It is also prevalent in material handling, automated logistics, and robotics applications. Industrial automation across many sectors benefits from its capabilities.

High-performance drive requirements in industries like automotive, food and beverage, and pharmaceuticals are well-served by this unit.

What are the typical power and voltage ratings for this module?

The SIEMENS 6SL3731-7KE35-6RE0 is rated for a substantial 355 kilowatts (kW) of power. Its current carrying capacity is 560 Amperes (A).

The standard operating voltage for this active line module is 400 Volts (V). This voltage is common in industrial power distribution systems.

These specifications indicate its suitability for high-power industrial motor drives and demanding motion control tasks.

What kind of control integration is possible with the 6SL3731-7KE35-6RE0?

It integrates with Siemens' SINAMICS S120 control units for comprehensive drive management. Communication is typically achieved via PROFINET or PROFIBUS.

This module can be part of a larger Siemens automation system, communicating with PLCs and HMIs. Its flexible architecture supports various control strategies.

The drive system allows for advanced motion control functions, precise speed and torque regulation, and safety integrated features.

What are the key safety features of the SINAMICS S120 Cabinet Module?

A primary safety feature is Safe Torque Off (STO), which prevents unintended motor movement. This is crucial for personnel safety during maintenance or emergencies.

The module adheres to international safety standards, ensuring reliable operation in critical applications. It contributes to overall machine safety compliance.

Other safety-related functions, depending on the specific configuration and control unit, can include Safe Stop 1 (SS1) and Safely Limited Speed (SLS).

How is the SIEMENS 6SL3731-7KE35-6RE0 commissioned?

Commissioning is typically performed using Siemens' SINAMICS STARTER software. This tool facilitates parameterization and diagnostics.

Key steps involve configuring motor data, setting up control loops, defining communication parameters, and enabling safety functions. Proper wiring is essential before commissioning.

A thorough system test and functional verification are recommended after initial setup to ensure correct operation and safety.

What are common troubleshooting steps for the 6SL3731-7KE35-6RE0?

Begin by checking the power supply and all electrical connections for proper installation and voltage. Review error messages displayed on the drive or communicated via the HMI.

Investigate control signals and communication links to ensure they are functioning correctly and are free from interference. Consult the product manual for specific fault code interpretations.

If problems persist, a systematic diagnostic approach, potentially involving Siemens support, may be necessary to identify internal module issues or external system faults.

Can this module be expanded or upgraded in the future?

Yes, the SINAMICS S120 platform is designed for modularity and scalability. Additional modules can be added to expand drive capacity.

It integrates with other Siemens automation components, allowing for upgrades to control systems or communication networks. This ensures long-term system relevance.

The architecture supports integration with Industry 4.0 solutions, enabling future enhancements for data analytics and smart manufacturing.