Product Description
The ABB ACS800-U11-0020-2 is a robust, single-drive AC drive engineered for demanding industrial applications. This unit delivers precise motor control, ensuring optimal performance and energy efficiency across a broad spectrum of processes. It features advanced direct torque control (DTC) for superior dynamic response and precise speed regulation, even without encoder feedback. The ACS800-U11-0020-2 is built with a rugged design for reliable operation in harsh environments and includes comprehensive protection features safeguarding both the drive and the motor. Its modular construction facilitates easy maintenance and expansion, while the integrated communication interfaces enable seamless integration with existing automation systems. This drive is a proven solution for improving productivity and reducing operational costs in industries such as pulp and paper, metals, mining, and power generation.
Is Your Device Showing These Signs?
ABB ACS800-U11-0020-2 drives commonly exhibit failures in the power module due to capacitor degradation and IGBT failures, leading to overvoltage faults and reduced drive performance. The control board is susceptible to communication errors stemming from corrupted firmware or damaged optocouplers, causing intermittent operation. Cooling fan failures result in overheating and thermal trips, necessitating fan replacement. Current sensors drift over time, affecting motor control accuracy and triggering current imbalance faults. Rectifier bridge diode failures are observed, causing DC bus voltage fluctuations and drive shutdowns.
Technical specifications
The ABB ACS800-U11-0020-2 is a robust, single-drive AC drive designed for demanding industrial applications. This unit features a compact, wall-mounted enclosure and provides precise motor control through direct torque control (DTC) technology. It delivers a continuous output current of 20 Amperes and operates within a voltage range of 380-480 Volts AC. Integrated safety features include Safe Torque Off (STO), ensuring personnel safety. The drive supports a wide range of communication protocols, including Modbus RTU and Ethernet, facilitating seamless integration into existing automation systems. Programming and diagnostics are performed via the intuitive DriveWindow PC tool. The ACS800-U11-0020-2 is engineered for high reliability and extended service life in harsh environments, demonstrated by its compliance with stringent industry standards.
Our Repair Process for the
ACS800-U11-0020-2
Our repair process for ABB ACS800-U11-0020-2 drives begins with a comprehensive diagnostic evaluation to pinpoint the failure. Power modules are inspected for capacitor degradation and IGBT failures; faulty components are replaced, and the module is rigorously tested. Control boards are examined for firmware corruption and optocoupler damage; firmware is reflashed or components are replaced as needed, followed by functional testing. Cooling fans are assessed for proper operation; failed fans are replaced to prevent overheating. Current sensors are calibrated or replaced to ensure accurate motor control and eliminate current imbalance faults. Rectifier bridge diodes are tested; defective diodes are replaced to stabilize the DC bus voltage and prevent drive shutdowns. Each repaired drive undergoes thorough testing under load to guarantee optimal performance and reliability before it is returned.
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.

















