SIEMENS 6SL3725-1TG41-3MA3 SINAMICS S120 Single Motor Module Compact 400mm Width 1200kW 1270A Liquid Cooled 690V

The SIEMENS 6SL3725-1TG41-3MA3 SINAMICS S120 Single Motor Module stands as a pinnacle of high-performance drive technology, engineered for demanding industrial applications. This liquid-cooled 1200 kW, 1270 A module operating at 690V, distinguished by its compact 400mm width, offers exceptional power density and advanced control capabilities. Its robust design and efficient liquid cooling system ensure reliable operation under extreme conditions, minimizing thermal stress and maximizing uptime. Key advantages include superior dynamic performance, precise motion control, and seamless integration into complex automation systems, making it an ideal solution for heavy-duty machinery in sectors such as metal processing, plastics manufacturing, and material handling.

Product Specifications

| Parameter                  | Specification                                       |

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

| Product Number             | 6SL3725-1TG41-3MA3                                  |

| Product Family             | SINAMICS S120                                       |

| Type                       | Single Motor Module                                 |

| Cooling                    | Liquid Cooled                                       |

| Rated Power (kW)           | 1200 kW                                             |

| Rated Current (A)          | 1270 A                                              |

| Voltage (V)                | 690 V                                               |

| Module Width (mm)          | 400 mm                                              |

| Control Type               | Advanced vector control, servo control              |

| Communication Interfaces   | PROFINET, PROFIBUS                                  |

| Protection Class           | IP20                                                |

| Ambient Temperature Range  | 0°C to 45°C (with liquid cooling system)            |

| Dimensions (H x W x D)     | Varies based on configuration, but 400mm width is key |

Core Features & Market Positioning

The SIEMENS 6SL3725-1TG41-3MA3 is positioned at the forefront of industrial drive technology, offering unparalleled performance for high-power applications. Its liquid-cooled architecture is a critical differentiator, enabling sustained operation at peak performance without thermal throttling, a common limitation in air-cooled systems. This feature significantly enhances reliability and extends the lifespan of the module, even in densely packed control cabinets or harsh environments. The advanced vector control and servo control capabilities provide exceptional precision and dynamic response, crucial for applications demanding exact positioning and rapid acceleration/deceleration. Siemens' reputation for robust engineering and extensive support further solidifies its market-leading position for mission-critical industrial automation.

Key Application Scenarios

This SINAMICS S120 module is exceptionally suited for applications requiring high torque and precise motion control at substantial power levels. Industries such as metal rolling mills and heavy presses benefit immensely from its ability to deliver consistent, high-current output for continuous operation. In the plastics industry, it excels in powering extruders and injection molding machines where precise speed and torque regulation are paramount for product quality. Furthermore, its robust performance makes it an ideal choice for large-scale material handling systems, crane drives, and complex machine tools that require sophisticated motion profiles and high dynamic responsiveness. The 690V rating is particularly advantageous for systems operating with higher voltage infrastructure, simplifying system design and potentially reducing cabling costs.

Practical System Integration Guidance

Integrating the SIEMENS 6SL3725-1TG41-3MA3 into an existing or new automation system requires careful planning, particularly concerning its liquid cooling requirements. A dedicated liquid cooling loop, typically utilizing a heat exchanger and a circulation pump, must be installed and properly configured to maintain optimal operating temperatures. Connection to the motor is via robust, appropriately rated high-voltage cabling. For control and communication, seamless integration with Siemens' SIMATIC S7 PLC families via PROFINET or PROFIBUS is standard, allowing for advanced diagnostics and parameterization through TIA Portal software. Proper grounding and shielding of cables are essential to mitigate electromagnetic interference and ensure system stability.

Operation and Risk Mitigation

Operating the SINAMICS S120 module involves adhering to strict safety protocols, especially given its high voltage and power ratings. Ensure all personnel are qualified and follow lockout/tagout procedures before performing any maintenance or adjustments. The module's diagnostic capabilities, accessible via the control unit and TIA Portal, are crucial for proactive risk mitigation. Common fault codes, such as overcurrent (F07000) or overtemperature (F07001), often indicate issues with the motor, cabling, or the cooling system. Promptly addressing these alerts by consulting the detailed fault code list in the SINAMICS S120 technical documentation is vital to prevent equipment damage and minimize downtime. Regular inspection of the liquid cooling system for leaks or blockages is also a key preventive measure.

Scalability & Long-Term Value

The SINAMICS S120 platform, including the 6SL3725-1TG41-3MA3, offers significant scalability and long-term value. Its modular design allows for expansion and adaptation to evolving production needs. Multiple S120 units can be interconnected to form a DC bus, sharing power and optimizing energy efficiency across a multi-motor setup. Compatibility with Siemens' broader automation portfolio, including SIMATIC PLCs and HMIs, ensures a cohesive and integrated solution. Furthermore, the drive's advanced capabilities facilitate integration with Industrial Internet of Things (IIoT) platforms, enabling predictive maintenance, remote monitoring, and data-driven optimization strategies, thereby maximizing its return on investment over its operational lifespan.

Frequently Asked Questions

What are the primary benefits of the SIEMENS 6SL3725-1TG41-3MA3's liquid cooling?

This system ensures superior thermal management. It allows for higher power density and continuous operation.

The liquid cooling significantly reduces thermal stress. This enhances module reliability and longevity.

It enables operation in demanding environments. This is crucial for high-output industrial processes.

What motor types are compatible with the SINAMICS S120 6SL3725-1TG41-3MA3?

It supports a wide range of AC induction motors. It also excels with permanent magnet synchronous motors.

The module offers advanced control for servo applications. This ensures precise performance with suitable motors.

Compatibility also extends to high-inertia loads. Always consult motor datasheets for optimal pairing.

How is the SIEMENS 6SL3725-1TG41-3MA3 commissioned?

Commissioning typically involves connecting to a control system like SIMATIC. Parameterization is done using TIA Portal software.

Initial setup requires configuring motor data. Essential safety functions must also be defined.

A thorough check of the liquid cooling system is vital. Then, perform drive tests under load.

What are the key safety features of this module?

It incorporates integrated safety functions. These include safe torque off (STO).

Advanced safety options like safe speed monitoring are available. These enhance protection for personnel and machinery.

Proper implementation of safety integrated functions is crucial. Always adhere to IEC 61508/61511 standards.

How does the 400mm width impact installation?

The compact 400mm width is a significant advantage. It allows for space-saving cabinet installations.

This enables higher power density in control panels. It’s ideal for retrofits or space-constrained facilities.

Efficient cooling is maintained despite the compact size. This is due to its advanced liquid cooling technology.

What communication protocols does this module support?

It primarily supports PROFINET and PROFIBUS. These are Siemens' standard industrial Ethernet and fieldbus solutions.

These protocols allow for seamless integration. They enable robust data exchange with PLCs and HMIs.

Configuration and diagnostics are streamlined via these networks. This is essential for modern automation systems.

Can the SIEMENS 6SL3725-1TG41-3MA3 be used for servo applications?

Yes, it is highly capable for demanding servo applications. It provides excellent dynamic response.

The module offers precise motion control. This is vital for complex automation tasks.

Its performance characteristics make it suitable for high-speed positioning. Ensure motor compatibility for optimal servo tuning.

What is the role of the liquid cooling system?

The liquid cooling system actively removes heat. It maintains optimal operating temperatures for the module.

This system prevents overheating. It ensures consistent performance under heavy loads.

Reliability is greatly enhanced by this feature. It allows for higher power output and longer service life.

How does this module integrate with IIoT and Industry 4.0?

It supports standard industrial communication protocols. These are essential for data acquisition.

This enables remote monitoring and diagnostics. It also facilitates integration with cloud-based analytics.

Advanced data from the drive can optimize processes. It supports predictive maintenance strategies.

What are common troubleshooting steps for F07000 faults?

F07000 indicates an overcurrent condition. Check motor windings for shorts.

Inspect motor and drive power cables for damage. Ensure correct motor data is entered in the drive.

Verify the cooling system is functioning correctly. High motor temperatures can indirectly cause overcurrents.