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Product Description
The Allen-Bradley 20G1AJE355JN4NNNNN PowerFlex 755 unit, designed for AC input up to 600V (and 725V DC), is an IP54/NEMA Type 12 rated enclosure (800mm deep) suitable for frame sizes 6-10, but lacks DC terminals.
Is Your Device Showing These Signs?
The Allen-Bradley 20G1AJE355JN4NNNNN 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 within the drive's communication module. Overcurrent trips are often traced to incorrect motor parameters, insulation breakdown in the motor windings, or excessive load conditions. Firmware corruption during updates can render the drive inoperable, necessitating a reflash. Cooling fan failures result in overheating and thermal overload faults, demanding immediate attention to prevent damage to sensitive components.
Technical specifications
The Allen-Bradley 20G1AJE355JN4NNNNN PowerFlex 755 is an AC drive (up to 600V AC/725V DC) with an IP54/NEMA Type 12 enclosure (800mm deep) for frame sizes 6-10, but it does not have DC terminals.
Our Repair Process for the
20G1AJE355JN4NNNNN
Our repair process for the Allen-Bradley 20G1AJE355JN4NNNNN PowerFlex 755 AC drive begins with a comprehensive diagnostic evaluation to pinpoint the root cause of the reported issue, addressing common problems such as IGBT failures, capacitor degradation, encoder feedback errors, communication faults, overcurrent trips, firmware corruption, and cooling fan malfunctions. This evaluation includes a thorough inspection of all critical components, including power modules, control boards, and communication interfaces, followed by rigorous testing using specialized equipment to verify functionality and identify any deviations from specified parameters. Upon identifying the fault, we proceed with component-level repairs or replacements using only genuine Allen-Bradley parts, ensuring optimal performance and reliability. Firmware reflashing is performed when necessary, utilizing validated software versions to restore proper operation. Post-repair, the drive undergoes extensive testing under simulated load conditions to validate its performance and ensure it meets all original factory specifications.
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.
Buying Options
To receive a quote within 2 hours, please provide us with the details of your requirements. Our team will promptly review your request and send you a custom offer.
Ships from Rochester, NY