Product Description
The Siemens 6SE6440-2UD31-1CA1 is a robust and reliable MICROMASTER 440 series frequency inverter designed for precise motor speed control in demanding industrial applications. This inverter delivers exceptional performance with a power rating of 11 kW (15 HP) at 380-480V AC, three-phase input. It features advanced vector control for superior torque and dynamic response, ensuring optimal motor operation across a wide speed range. Integrated protection functions safeguard the motor and inverter from overloads, short circuits, and overvoltages, guaranteeing operational safety and minimizing downtime. The user-friendly interface and parameterization software facilitate easy commissioning and diagnostics, while the compact design enables space-saving installation. The 6SE6440-2UD31-1CA1 is a dependable solution for applications requiring precise speed control, energy efficiency, and long-term reliability.
Is Your Device Showing These Signs?
Siemens 6SE6440-2UD31-1CA1 commonly experiences faults related to DC link capacitor degradation, resulting in overvoltage faults and drive tripping. IGBT failures within the inverter section are frequent, leading to short circuit errors and motor control issues. Communication problems via PROFIBUS DP are addressed through firmware updates or resolving hardware interface malfunctions. Cooling fan failures cause overheating, triggering thermal overload protection and reduced drive performance. Parameter corruption in the EEPROM necessitates reprogramming to restore factory settings or application-specific configurations.
Technical specifications
The Siemens 6SE6440-2UD31-1CA1 is a MICROMASTER 440 series frequency inverter designed for sophisticated drive applications requiring precise speed and torque control. This inverter accepts a three-phase 380-480V AC input and delivers a variable frequency output to control three-phase induction motors up to 11 kW (15 hp). It features advanced vector control for enhanced motor performance, sensorless current vector control (SLVC) for stable operation across varying loads, and integrated braking chopper for dynamic braking applications. The unit supports comprehensive communication options including USS protocol and PROFIBUS via an optional module, enabling seamless integration into automation systems. Parameterization is achieved through the integrated BOP (Basic Operator Panel) or via PC-based software tools. The 6SE6440-2UD31-1CA1 provides extensive protection functions, including overvoltage, undervoltage, overcurrent, and short-circuit protection, ensuring reliable and safe operation. It is engineered for demanding industrial environments, offering a robust and durable solution for variable speed drive requirements.
Our Repair Process for the
6SE6440-2UD31-1CA1
Our repair process for the Siemens 6SE6440-2UD31-1CA1 drive begins with a comprehensive evaluation to pinpoint the failure's root cause. This involves a thorough inspection of all components, including power boards, control boards, and capacitors. Once the fault is identified, skilled technicians execute precise repairs using high-quality replacement parts. Repaired drives then undergo rigorous testing under simulated operating conditions to ensure optimal performance and reliability. Finally, the unit is carefully cleaned, packaged, and returned with a detailed repair report.
Your Guarantee: Warranty & Lifetime Support
Your satisfaction is our top priority, and we confidently stand behind the quality of our repairs. That's why every repair service is covered by our comprehensive 24-month warranty. Furthermore, we offer lifetime phone support – if you have questions or need assistance related to our repair down the road, we're here to help. Our service commitment is straightforward: we guarantee our work, and if you're not satisfied, we will make it right. Learn More about our Repair process.
Comprehensive Repairs You Can Depend On
We take immense pride in the quality and reliability of our work. Our process goes beyond simply fixing the immediate problem. We perform a comprehensive inspection of your main board (or other equipment) and proactively replace components known to be failure-prone or showing signs of potential future failure. Before any item is returned, it undergoes rigorous functional testing to ensure it meets performance specifications and operates flawlessly. Visit our main Repair Services page to learn more.
Save Significantly
Our primary goal is to save you hundreds, or even thousands, of dollars compared to the cost of new equipment replacement. By repairing existing components, we provide an economical solution that is also eco-friendly. At Roc Industrial, our commitment to integrity and community drives our consistent growth and ensures you receive a reliable, cost-effective solution.

Please Note: Roc Industrial operates as an independent service provider and is not an authorized distributor for the manufacturers or brands mentioned. Consequently, the original manufacturer's warranty is not applicable to items repaired or sold by us. Roc Industrial provides its own 2-year warranty on all repair services performed.

















