SIEMENS 6SL3000-1BF35-5AA0 SINAMICS Braking Resistor for Central Braking Module 550kW 3AC 500V-600V IP21 Protection

The SIEMENS 6SL3000-1BF35-5AA0 SINAMICS Braking Resistor is a critical component designed to dissipate excess energy generated by electric motors during deceleration or regenerative braking in industrial applications. This high-capacity resistor, rated for 550kW with a 3-phase AC input of 500V-600V and IP21 protection, ensures the safe and efficient operation of SINAMICS drive systems. Its robust design and integration capabilities make it an essential part of motion control solutions where dynamic braking is required, preventing overvoltage and protecting drive components.

Product Specifications

| Parameter              | Value                                       |

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

| Manufacturer           | Siemens                                     |

| Product Series         | SINAMICS                                    |

| Part Number            | 6SL3000-1BF35-5AA0                          |

| Product Type           | Braking Resistor                            |

| Rated Power            | 550 kW                                      |

| Input Voltage          | 3 AC 500 V - 600 V                          |

| Protection Class       | IP21                                        |

| Application            | Central Braking Module                      |

| Compatibility          | SINAMICS Drive Systems                      |

| Connection Type        | Screw Terminals                             |

| Dimensions (approx.)   | Varies by specific module, consult datasheet |

| Weight (approx.)       | Varies by specific module, consult datasheet |

Core Features & Market Positioning

The SIEMENS 6SL3000-1BF35-5AA0 stands out due to its high power rating and seamless integration within the Siemens SINAMICS ecosystem, positioning it as a premium solution for demanding industrial applications. This braking resistor is engineered to handle significant energy dissipation, a crucial feature for applications involving frequent or rapid stops, thereby extending the lifespan of motor drives and preventing potential system failures due to overvoltage. Its IP21 protection rating offers a fundamental level of defense against solid objects and vertical water ingress, making it suitable for controlled industrial environments. The emphasis on component synergy within the SINAMICS platform ensures optimized performance and reliability, a key differentiator in the competitive industrial automation market.

Key Application Scenarios

This braking resistor is specifically engineered for applications requiring robust braking capabilities within SINAMICS drive systems. It finds critical use in heavy industry sectors such as material handling, where cranes and hoists frequently require controlled deceleration and holding torque. In manufacturing, it supports high-inertia loads in applications like extruders and large conveyor systems that need to stop quickly and safely. Furthermore, its suitability for 500V-600V systems makes it ideal for large-scale industrial plants and machinery operating under these voltage conditions. The central braking module integration signifies its role in centralized energy management for multiple drive axes, optimizing system efficiency and safety.

Practical System Integration Guidance

Integrating the SIEMENS 6SL3000-1BF35-5AA0 braking resistor into a SINAMICS drive system typically involves connecting it to the DC bus of a compatible central braking module or an infeed/regenerative feedback unit. Ensure proper wiring is executed using appropriately rated cables and secure connections to the resistor terminals. The resistor must be installed in a location that allows for adequate ventilation to manage the heat generated during operation, adhering to the manufacturer's recommended clearances. Commissioning requires configuration within the SINAMICS drive's parameters, specifically setting the braking resistor thresholds (e.g., overvoltage trip values) to match the resistor's capabilities and system requirements. Refer to the specific SINAMICS control unit's parameter list for precise guidance on braking resistor parameterization.

Operation and Risk Mitigation

During operation, the SIEMENS 6SL3000-1BF35-5AA0 braking resistor activates when the DC bus voltage exceeds a predefined limit, typically during motor deceleration or regenerative operation. This controlled dissipation of energy prevents overvoltage, safeguarding the drive's power modules and other sensitive electronic components from damage. Failure to properly implement or configure a braking resistor can lead to overvoltage faults, potentially causing unplanned downtime and component failure. Regular inspection of the resistor for any signs of physical damage or overheating is recommended, alongside periodic checks of connection integrity to ensure continuous safe operation.

Scalability & Long-Term Value

The long-term value of the SIEMENS 6SL3000-1BF35-5AA0 is intrinsically linked to its integration within the broader SINAMICS platform, offering a clear upgrade path and compatibility with future Siemens automation solutions. Its modular design allows for scaling by potentially incorporating multiple resistors or larger capacity units depending on evolving application demands. For organizations committed to digital transformation and the Industrial Internet of Things (IIoT), SINAMICS drives equipped with such braking resistors can feed operational data into higher-level control and analytics systems, enabling predictive maintenance and performance optimization. This backward and forward compatibility ensures that investments in Siemens braking solutions provide enduring operational efficiency and adaptability.

Frequently Asked Questions (FAQs)

What is the primary function of the SIEMENS 6SL3000-1BF35-5AA0 braking resistor?

Its main role is to dissipate excess energy generated during regenerative braking. This prevents overvoltage on the DC bus of the SINAMICS drive system. It ensures safe and reliable motor operation.

How does this resistor protect the SINAMICS drive system?

It absorbs excess energy, thus limiting DC bus voltage. This prevents damage to power modules and other sensitive electronic components. It safeguards the entire drive system from overvoltage faults.

Can this braking resistor be used with non-Siemens drive systems?

While designed for SINAMICS, it might be adapted for other systems. However, careful technical evaluation of voltage, current, and control compatibility is essential. It is strongly recommended for intended Siemens applications.

What IP rating does the SIEMENS 6SL3000-1BF35-5AA0 have?

The resistor features an IP21 protection rating. This indicates it is protected against solid objects larger than 12.5mm. It is also protected against vertically falling water droplets.

Does IP21 protection make this resistor suitable for outdoor use?

IP21 offers basic protection against water ingress from above. It is generally suitable for controlled indoor industrial environments. Outdoor use may require additional enclosure or protection.

What is the rated power and voltage range of this braking resistor?

The SIEMENS 6SL3000-1BF35-5AA0 has a rated power of 550kW. It operates with a 3-phase AC input voltage range of 500V to 600V. These specifications define its high-capacity performance.

How is the SIEMENS 6SL3000-1BF35-5AA0 integrated into a system?

It connects to the DC bus of a SINAMICS central braking module or infeed unit. Proper wiring to the resistor terminals is crucial for safe operation. Ensure correct parameter configuration in the drive.

What are the installation considerations for this braking resistor?

Install it in a well-ventilated area to manage heat. Maintain recommended clearances around the resistor. Secure all electrical connections firmly.

What happens if the braking resistor is not properly configured?

Improper configuration can lead to overvoltage faults. This may cause system downtime and damage drive components. Correct parameter settings are critical for safety.

Is this a standard component for all SINAMICS drive systems?

No, it is designed for applications requiring significant braking energy dissipation. Its use depends on the specific motor size, load inertia, and application duty cycle. Consult Siemens documentation for suitability.