Product Description
The ABB ACS355-03U-08A8-4+K458 is a robust and versatile general purpose drive designed for machinery applications. This drive offers precise motor control with advanced features such as sensorless vector control, providing optimal performance across a wide speed range. It boasts a compact design for easy installation and integration into existing systems, while its user-friendly interface simplifies programming and operation. The integrated Safe Torque Off (STO) functionality enhances safety, and the built-in EMC filter minimizes electromagnetic interference. This model supports various communication protocols, ensuring seamless connectivity with automation systems. The ACS355-03U-08A8-4+K458 delivers reliable and efficient motor control, reducing energy consumption and improving overall system productivity.
Is Your Device Showing These Signs?
ABB ACS355-03U-08A8-4+K458 drives commonly exhibit faults related to overvoltage, overcurrent, and undervoltage conditions stemming from improper motor parameters or power supply fluctuations. Parameter configuration errors within the drive's firmware, specifically related to motor control settings such as acceleration/deceleration times and current limits, cause performance degradation. Component failures, including DC bus capacitors and IGBTs, lead to operational faults and require replacement. Communication errors on the fieldbus network, often due to incorrect addressing or wiring issues, interrupt control signals. Finally, cooling fan malfunctions result in overheating and premature component failure.
Technical specifications
The ABB ACS355-03U-08A8-4+K458 is a compact, general purpose AC drive designed for machinery applications. It features sensorless vector control, providing precise motor control across a wide speed range. The drive operates on a three-phase, 380-480V AC power supply and delivers a continuous output current of 8.8A, suitable for motors up to 4kW (5.5 hp). Integrated features include a built-in EMC filter (C3 environment), brake chopper, and Modbus RTU communication interface for seamless integration with automation systems. The drive supports a variety of control methods, including scalar (V/Hz), vector control, and energy optimization, ensuring efficient operation. The +K458 option adds a coated circuit board, enhancing the drive's resilience in harsh environments with dust, humidity, and corrosive agents. Configuration and programming are accomplished via the drive's keypad or through ABB's DriveWindow Light PC tool, enabling parameter setting, monitoring, and diagnostics.
Our Repair Process for the
ACS355-03U-08A8-4+K458
Our repair process for ABB ACS355-03U-08A8-4+K458 drives begins with a comprehensive diagnostic evaluation to pinpoint the root cause of the fault, addressing common issues such as overvoltage, overcurrent, and undervoltage conditions. We meticulously inspect motor parameters and power supply stability, correcting any configuration errors within the drive's firmware, specifically motor control settings, acceleration/deceleration times, and current limits. Component-level repairs are performed, including the replacement of faulty DC bus capacitors and IGBTs, ensuring optimal operational performance. Communication errors on the fieldbus network are resolved through precise address verification and wiring corrections, restoring seamless control signal transmission. Finally, cooling fan functionality is verified and repaired or replaced as needed to prevent overheating and ensure long-term reliability.
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.

















