Product Description
The Allen Bradley PowerFlex 755 AC drive, model 20G11ND065AN0NNNNN, is designed for enhanced productivity and reduced downtime. It features a default CM Cap Connection (jumper removed), requires an IP20/IP00 NEMA/UL Type 1 open enclosure with a 480-650V DC power voltage, and lacks an internal resistor and transistor. Automatic Device Configuration (ADC) allows for easy setup and automatic parameter download from Logix controllers upon drive replacement, minimizing manual reconfiguration. Programmable via Studio 5000's integrated motion instructions, it supports various motor control algorithms (including vector control with FORCE Technology, sensorless vector control, and Volts per Hertz) and offers normal, heavy, and light-duty overload capabilities.
Is Your Device Showing These Signs?
The Allen Bradley 20G11ND065AN0NNNNN PowerFlex 755 AC drive commonly experiences issues related to IGBT failures, often indicated by fault codes and stemming from overcurrent events or thermal stress. Capacitor degradation within the DC bus is a frequent problem, manifesting as DC bus undervoltage faults and impacting drive performance. Communication errors on the EtherNet/IP network, resulting in loss of control and monitoring capabilities, require troubleshooting of network configurations and cabling. Encoder feedback problems disrupt accurate motor control, necessitating encoder replacement or resolution of wiring issues. Firmware corruption can occur, leading to unpredictable drive behavior and requiring a firmware update or re-flash.
Technical specifications
The Allen Bradley PowerFlex 755 AC drive (20G11ND065AN0NNNNN) is a high-productivity drive designed to minimize downtime. It has a default CM Cap Connection (jumper removed), requires an IP20/IP00 NEMA/UL Type 1 open enclosure with 480-650V DC power, and doesn't include an internal resistor or transistor. It features Automatic Device Configuration (ADC) for simplified setup and parameter download from Logix controllers. Programmable with Studio 5000, it supports various motor control algorithms and offers normal, heavy, and light-duty overload capabilities.
Our Repair Process for the
20G11ND065AN0NNNNN
Our repair process for the Allen Bradley 20G11ND065AN0NNNNN PowerFlex 755 AC drive begins with a comprehensive diagnostic evaluation to pinpoint the failure. Suspected IGBT failures, indicated by fault codes, undergo rigorous testing and replacement. DC bus capacitor degradation, identified through undervoltage faults, necessitates capacitor replacement with components meeting or exceeding original specifications. Communication errors on the EtherNet/IP network require a thorough examination of network configurations, cabling, and module functionality, with corrections implemented to restore connectivity. Encoder feedback problems are addressed through encoder replacement or resolution of wiring discrepancies to ensure accurate motor control. Firmware corruption is rectified via a firmware update or re-flash to restore proper drive operation.
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.

















