SIEMENS 6SL3210-1PE21-8UL0 5.5kW/7.5kW SINAMICS PM240-2 Unfiltered (400V, FSB)

The SIEMENS 6SL3210-1PE21-8UL0 is a robust, unfiltered SINAMICS G120 PM240-2 frequency converter designed for demanding industrial applications, offering 5.5kW (standard) and 7.5kW (high-overload) power ratings for 400V systems. This drive unit excels in providing precise motor control and enhanced energy efficiency, making it a cornerstone for modern automation. Its compact design, characterized by frame size FSB, simplifies integration into existing control cabinets. The unfiltered design is crucial for applications where harmonic distortion mitigation is handled at a higher system level or is less critical. With its advanced features, the 6SL3210-1PE21-8UL0 positions itself as a high-performance solution for variable speed drive requirements across diverse industrial sectors.

Product Specifications

| Feature                 | Specification                        |

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

| Product Number          | 6SL3210-1PE21-8UL0                   |

| Series                  | SINAMICS G120 PM240-2                |

| Power Rating (Standard) | 5.5 kW                               |

| Power Rating (High Ovld) | 7.5 kW                               |

| Voltage                 | 400V                                 |

| Frame Size              | FSB                                  |

| Filter                  | Unfiltered                           |

| Protection Class        | IP20                                 |

| Dimensions (H x W x D)  | 369mm x 140mm x 160mm                |

| Weight                  | 5.1 kg                               |

| Ambient Temperature     | -20°C to +50°C (derating above 40°C) |

| Communication Interfaces| PROFINET, PROFIBUS DP (optional)     |

| Integrated Safety       |STO (Safe Torque Off)                |

Core Features & Market Positioning

The SIEMENS 6SL3210-1PE21-8UL0 distinguishes itself through its high overload capability, crucial for applications with high starting torques or transient load peaks, such as those found in material handling and processing machinery. Its unfiltered design offers a cost and space advantage in systems where external filters are already integrated or not required, streamlining installation. As part of the SINAMICS G120 family, it benefits from Siemens' extensive experience in industrial automation, ensuring reliability and a broad spectrum of control functionalities, including advanced vector control and V/f control. The integrated Safe Torque Off (STO) function enhances operational safety, meeting stringent industrial safety standards and reducing the need for external safety components. This combination of performance, safety, and integration capability positions the PM240-2 series as a leading choice for OEMs and system integrators seeking a dependable and versatile drive solution.

Key Application Scenarios

This 5.5kW/7.5kW SINAMICS PM240-2 drive is ideally suited for a wide array of industrial applications demanding precise speed and torque control. Common use cases include pump and fan control in HVAC systems, where variable speed operation significantly improves energy efficiency and reduces wear. It is also a preferred choice for conveyor systems in logistics and manufacturing, enabling smooth acceleration and deceleration for accurate product handling. Furthermore, its robust design and high overload capacity make it suitable for machine tool applications, compressors, and other machinery requiring dynamic motor performance. The unfiltered nature of the 6SL3210-1PE21-8UL0 makes it particularly relevant for installations where it forms part of a larger, harmonically managed power system or in less sensitive grid environments.

Practical System Integration Guidance

Integrating the SIEMENS 6SL3210-1PE21-8UL0 into an industrial system requires careful attention to power supply, motor connection, and control signal wiring. The unit is designed for a 400V AC power supply, and proper grounding is essential for safety and electromagnetic compatibility. When connecting the motor, ensure the motor's rated power and current align with the drive's capabilities, especially considering the 7.5kW high-overload rating. For control, the drive supports various digital and analog inputs/outputs, allowing for integration with PLCs and control systems via optional communication modules like PROFINET or PROFIBUS DP. Commissioning typically involves parameterization using Siemens’ SIMOTION or STARTER software, which allows for motor data identification, setting of control modes (e.g., V/f, vector control), and configuring safety functions. Ensure adequate ventilation and adhere to the specified clearances around the drive to prevent overheating, as indicated by the IP20 protection rating and operating temperature limits.

Operation and Risk Mitigation

Safe operation of the SIEMENS 6SL3210-1PE21-8UL0 frequency converter is paramount. Always ensure the drive is properly installed, grounded, and protected from environmental factors like dust and moisture, given its IP20 rating. Before powering up, verify all connections, especially the motor and control wiring, to prevent short circuits or incorrect operation. The integrated Safe Torque Off (STO) functionality must be correctly wired and tested as per safety standards to ensure reliable emergency stop capabilities, preventing unexpected motor starts. Common troubleshooting may involve understanding fault codes displayed on the drive's interface or via diagnostic tools; for instance, F0001 often indicates an overload condition, while F0002 might point to a short circuit. Referencing the detailed product manual for specific fault code explanations and mitigation strategies is crucial for minimizing downtime and ensuring safe system operation.

Scalability & Long-Term Value

The SIEMENS 6SL3210-1PE21-8UL0, as part of the modular SINAMICS G120 platform, offers significant scalability and long-term value for industrial automation projects. Its compatibility with a wide range of Siemens control systems and HMI panels ensures seamless integration into existing or future plant architectures, supporting open and proprietary communication protocols like PROFINET and PROFIBUS. This interoperability facilitates system expansion and upgrades without requiring a complete overhaul of the automation infrastructure. Furthermore, Siemens' commitment to Industrial IoT (IIoT) means that drives like the PM240-2 can be integrated into digitalized production environments, enabling advanced data analytics, predictive maintenance, and remote monitoring capabilities for optimized operational efficiency and reduced TCO. The robust construction and availability of spare parts contribute to the longevity and reliability of the investment.

FAQs

What is the primary function of the SIEMENS 6SL3210-1PE21-8UL0?

This drive controls motor speed and torque. It provides variable speed operation for AC motors, enhancing efficiency and process control.

It offers precise motor regulation for demanding industrial applications. The unfiltered design is suited for specific system architectures.

Its core purpose is to optimize energy consumption and machine performance through advanced drive technology.

What are the power ratings for the 6SL3210-1PE21-8UL0?

The drive supports a standard continuous power rating of 5.5kW. It also features a high overload capacity of 7.5kW.

This allows for handling applications with high starting torques or temporary peak loads. It ensures reliable operation under dynamic conditions.

The dual rating provides flexibility for different motor sizes and application requirements within a single product.

What does "unfiltered" mean for this drive?

An unfiltered drive lacks integrated line filters for harmonic mitigation. It is designed for installations where harmonic distortion is managed elsewhere.

This design can reduce cost and installation space compared to filtered variants. It relies on external solutions or grid characteristics.

Users must ensure compliance with local harmonic distortion regulations if not using an external filter.

What is the voltage requirement for this SINAMICS drive?

The SIEMENS 6SL3210-1PE21-8UL0 operates on a 400V AC power supply. This is standard for industrial machinery in many regions.

Ensure your electrical supply matches this voltage to avoid damage to the drive or motor. Proper phase connections are critical.

The drive is designed for three-phase power distribution systems common in industrial facilities.

What is frame size FSB in relation to this product?

FSB denotes the physical dimensions and mounting footprint of the drive unit. It's part of Siemens' standardized sizing for the G120 series.

This specific frame size (FSB) dictates the physical size and heat dissipation capacity of the module. It is crucial for panel layout.

It ensures mechanical compatibility with enclosures and mounting arrangements designed for FSB size drives.

Can this drive be used with any AC motor?

It is compatible with standard three-phase AC asynchronous motors. Ensure motor ratings (voltage, current, power) are within the drive's specifications.

Siemens recommends using motors designed for variable frequency drive operation for optimal performance and longevity. Always perform motor identification.

Verify motor insulation and cabling are suitable for VFD output, especially for longer cable runs or higher switching frequencies.

What communication protocols does the 6SL3210-1PE21-8UL0 support?

It can be equipped with communication modules for protocols like PROFINET and PROFIBUS DP. These enable integration into automation networks.

These optional modules allow for seamless data exchange with PLCs and SCADA systems for control and monitoring. They are not built-in by default.

Integration into networks allows for remote diagnostics, parameter adjustments, and process optimization through centralized control.

What safety features are integrated into this drive?

The drive includes Safe Torque Off (STO) as a standard safety function. This prevents unexpected motor movement during maintenance.

STO is a vital safety measure, compliant with relevant industrial safety standards for machinery operation. It disengages motor torque safely.

Proper wiring and integration of the STO function into the overall machine safety concept are essential for effective risk mitigation.

How do I commission the SIEMENS 6SL3210-1PE21-8UL0?

Commissioning typically involves connecting the drive using Siemens' STARTER or SIMOTION software. This includes motor auto-tuning and parameter configuration.

Key steps include setting control modes (V/f, vector), configuring I/O, and establishing communication link if applicable. Safety functions must also be set up.

Refer to the official Siemens documentation for detailed step-by-step commissioning procedures specific to your application.

What are common fault codes and their meanings?

Common faults include F0001 (overload), F0002 (short circuit), and F0011 (overvoltage). Each indicates a specific issue requiring diagnosis.

These codes are displayed on the drive's keypad or through diagnostic software, guiding troubleshooting efforts. Always consult the manual for details.

Addressing fault codes promptly through proper troubleshooting prevents further damage and minimizes system downtime.