Product Description
The 20DE027A3EYNANNNN is a 600V, 27-amp adjustable frequency AC drive designed for efficient three-phase motor control in indoor industrial environments, featuring an IP20/NEMA Type 1 enclosure, user-friendly LCD display, quick start guide, IGBT braking, adjustable undervoltage trip, microprocessor-controlled thermal management, and ride-thru capabilities for brief power interruptions (0.25 seconds unloaded, 15 milliseconds at full load).
Is Your Device Showing These Signs?
The Allen Bradley 20DE027A3EYNANNNN PowerFlex 755 AC drive commonly experiences issues such as IGBT failures, capacitor degradation leading to DC bus undervoltage faults, and encoder feedback problems causing erratic motor control. Communication faults on the EtherNet/IP network are frequent, stemming from configuration errors or hardware malfunctions in the communication module. Overcurrent trips and nuisance tripping occur due to improper motor parameter settings or insulation breakdown in the motor windings. Cooling fan failures result in overheating and subsequent drive shutdowns, demanding immediate attention to prevent thermal damage to sensitive components.
Technical specifications
The 20DE027A3EYNANNNN is a 600V, 27A AC drive for controlling three-phase motors in industrial settings. It's designed for indoor use, has an IP20/NEMA Type 1 enclosure, and features an LCD display, IGBT braking, adjustable undervoltage trip, thermal management, and ride-thru capabilities for short power outages.
Our Repair Process for the
20DE027A3EYNANNNN
Our repair process for the Allen Bradley 20DE027A3EYNANNNN PowerFlex 755 AC drive begins with a comprehensive diagnostic evaluation to pinpoint the root cause of the reported issue, including IGBT failures, capacitor degradation, encoder feedback problems, communication faults, overcurrent trips, or cooling fan failures. We then proceed with component-level repairs, replacing faulty IGBTs, capacitors, encoders, communication modules, fans, or other damaged parts with genuine or equivalent high-quality replacements. Following component replacement, we conduct thorough testing and calibration of the drive to ensure it meets original factory specifications and performs optimally under various load conditions. Finally, the repaired drive undergoes rigorous quality control checks, including thermal testing and communication protocol verification, before it is returned, guaranteeing reliable operation and minimizing future downtime.
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.

















