Product Description
The ABB ACS355-03U-02A4-2+J404+K454 is a robust and adaptable general purpose drive designed for machinery applications. This drive ensures precise motor control, enhances energy efficiency, and reduces operational costs. It features a user-friendly interface, making setup and commissioning straightforward. The integrated Safe Torque Off (STO) functionality improves safety. The +J404 option provides an internal EMC filter, minimizing electromagnetic interference, while the +K454 option adds a brake chopper for dynamic braking applications. This drive delivers reliable performance in diverse industrial settings, optimizing processes and extending equipment lifespan.
Is Your Device Showing These Signs?
ABB ACS355-03U-02A4-2+J404+K454 drives commonly exhibit faults related to DC bus overvoltage, IGBT failures, and communication errors on the Modbus RTU interface. Parameter corruption within the firmware necessitates reprogramming, while capacitor degradation in the DC link causes instability. Overcurrent trips are traced to motor insulation breakdown or incorrect motor parameters. Encoder feedback issues, stemming from faulty J404 option modules, and keypad malfunctions, associated with the K454 panel, also require attention.
Technical specifications
The ABB ACS355-03U-02A4-2+J404+K454 is a compact, general-purpose AC drive designed for machinery applications. This drive operates on a three-phase, 200-240V AC power supply and delivers a continuous output current of 2.4A, suitable for motors up to 0.75kW (1 hp). It features sensorless vector control, providing precise motor control and high starting torque. Integrated functionalities include a built-in EMC filter (C2 environment), brake chopper, and Modbus RTU communication for seamless integration into automation systems. The +J404 option designates IP66 enclosure rating for robust protection against dust and water ingress, enabling use in harsh environments. Option +K454 specifies a coated circuit board, enhancing resistance to humidity and corrosive atmospheres, ensuring reliable performance and extended lifespan in demanding industrial settings.
Our Repair Process for the
ACS355-03U-02A4-2+J404+K454
Our repair process for ABB ACS355-03U-02A4-2+J404+K454 drives begins with a comprehensive diagnostic evaluation to pinpoint the root cause of the failure, addressing common issues such as DC bus overvoltage, IGBT failures, and Modbus RTU communication errors. Parameter corruption is rectified through firmware reprogramming, and DC link capacitor degradation is resolved with component replacement to ensure stability. Overcurrent trips are investigated by assessing motor insulation and verifying motor parameters. Encoder feedback problems are corrected by repairing or replacing the J404 option module, and keypad malfunctions are fixed through repair or replacement of the K454 panel. Each drive undergoes rigorous testing under load conditions 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.

















