Product Description
The Allen-Bradley PowerFlex 755 drive, part number 20G1ABD485JN2NNNNN, is a high-efficiency 480V AC input-only drive with precharge, no DC terminals, and 650V DC support, designed for standard cabinet installations (IP20/NEMA/UL Type 1, 600mm deep, RAL 7032) and compatible with frame sizes 6-8 (up to 10). It features built-in filtering, a common mode capacitor jumper, and lacks internal transistors/resistors for simplified operation, making it a robust industrial motor control solution.
Is Your Device Showing These Signs?
The Allen Bradley 20G1ABD485JN2NNNNN PowerFlex 755 AC drive commonly experiences issues such as IGBT failures, DC bus capacitor degradation leading to over-voltage faults, and control board malfunctions causing communication errors on EtherNet/IP networks. Resolving nuisance tripping due to improper motor parameter settings or ground faults is a frequent task. Cooling fan failures result in thermal overloads, and addressing these issues promptly prevents further damage. Firmware corruption requires reflashing to restore proper drive operation.
Technical specifications
The Allen-Bradley PowerFlex 755 drive (20G1ABD485JN2NNNNN) is a high-efficiency 480V AC input drive for standard cabinet installations (IP20/NEMA/UL Type 1). It features precharge, no DC terminals, 650V DC support, built-in filtering, and is compatible with frame sizes 6-8 (up to 10). It's designed for simplified operation with no internal transistors/resistors.
Our Repair Process for the
20G1ABD485JN2NNNNN
Our repair process for the Allen Bradley 20G1ABD485JN2NNNNN PowerFlex 755 AC drive begins with a comprehensive diagnostic evaluation to pinpoint the failure. We address IGBT failures by replacing the faulty components with tested, high-quality replacements. DC bus capacitor degradation is resolved through capacitor replacement, preventing over-voltage faults. Control board malfunctions are corrected via component-level repair or board replacement, restoring EtherNet/IP communication. Nuisance tripping is eliminated by verifying and correcting motor parameter settings and resolving ground faults. Cooling fan failures are rectified with fan replacement to prevent thermal overloads. Firmware corruption is resolved through reflashing to ensure proper drive operation. All repairs conclude with rigorous testing under load conditions to guarantee optimal performance and 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.
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