Product Description
The Siemens 6SE6420-2AB17-5AA1 MICROMASTER 420 is a robust and reliable frequency inverter designed for a wide range of variable speed drive applications. This inverter provides precise motor control, ensuring optimal performance and energy efficiency for your machinery. It features sensorless vector control for enhanced torque and speed regulation, even at low speeds. The unit accepts a three-phase 380-480V AC input and delivers a variable frequency output to control standard three-phase induction motors up to 1.5 kW (2 HP). Integrated protection functions safeguard the inverter and motor from overcurrent, overvoltage, undervoltage, and overheating, ensuring operational safety and longevity. Parameterization is straightforward via the integrated keypad or through optional communication modules, allowing for seamless integration into existing automation systems. This MICROMASTER 420 inverter is a dependable solution for applications demanding precise speed control and efficient energy management.
Is Your Device Showing These Signs?
The Siemens 6SE6420-2AB17-5AA1 MICROMASTER 420 drive commonly experiences issues such as IGBT failures, capacitor degradation leading to DC bus undervoltage faults, and keypad malfunctions affecting parameter configuration. Overcurrent trips are frequent due to motor insulation breakdown or incorrect V/f control settings. Communication errors arise from damaged RS485 ports or incorrect Profibus addressing. Firmware corruption necessitates reprogramming, and cooling fan failures cause overheating, triggering thermal overload protection. Resolve these issues through component replacement, parameter adjustments, communication diagnostics, and preventative maintenance.
Technical specifications
The Siemens 6SE6420-2AB17-5AA1 is a MICROMASTER 420 series frequency inverter designed for controlling the speed of three-phase AC induction motors. This compact drive unit operates on a 380-480V AC, three-phase input voltage and delivers a rated output current of 2.6A with a power rating of 0.75kW (1HP). It features sensorless vector control for precise motor control and offers a wide range of programmable parameters for adapting to various application requirements. Integrated protection functions, including overvoltage, undervoltage, overcurrent, and short-circuit protection, ensure reliable operation and prevent damage to the motor and drive. The unit supports communication via USS protocol and possesses an integrated braking chopper for dynamic braking applications. Installation is simplified through its modular design and user-friendly interface, making it suitable for diverse industrial applications such as pumps, fans, and conveyors.
Our Repair Process for the
6SE6420-2AB17-5AA1
Our repair process for the Siemens 6SE6420-2AB17-5AA1 begins with a comprehensive evaluation to pinpoint the fault. Following diagnostics, skilled technicians perform component-level repairs, replacing defective parts with high-quality replacements. The unit undergoes rigorous testing under simulated operating conditions to ensure it meets original performance specifications. Finally, the repaired Siemens 6SE6420-2AB17-5AA1 is carefully 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.

















