Product Description
The Rockwell Automation (Allen-Bradley) 20G11ND125AN0NNNNN, a PowerFlex 755 series variable speed drive, is designed for indoor use with all types of induction motors. Operating at 480VAC/650VDC and 50-60Hz, this open-enclosure drive achieves 97% efficiency at its ND rating of 125 Amps and 100 Horsepower. It features an embedded I/O system for control but lacks a Human-Machine Interface. Proper ventilation is crucial for optimal performance and longevity, and it requires a single-point ground system with shielded cables and short motor cables. Avoid contact with liquids and harsh environments.
Is Your Device Showing These Signs?
The Allen Bradley 20G11ND125AN0NNNNN PowerFlex 755 AC drive commonly experiences issues such as IGBT failures necessitating replacement, capacitor bank degradation leading to DC bus undervoltage faults, and cooling fan malfunctions causing thermal overloads. Communication errors on the Ethernet/IP network are resolved through firmware updates and network configuration adjustments. Current sensor drift results in inaccurate motor control, requiring calibration or replacement. Parameter corruption within the drive's memory necessitates reprogramming with the correct configuration file.
Technical specifications
The Rockwell Automation 20G11ND125AN0NNNNN is a PowerFlex 755 variable speed drive for indoor use with induction motors. It operates at 480VAC/650VDC, 50-60Hz, and achieves 97% efficiency at 125A/100HP. It has embedded I/O but no HMI, and requires proper ventilation, single-point grounding with shielded cables, and short motor cables. Avoid liquids and harsh environments.
Our Repair Process for the
20G11ND125AN0NNNNN
Our repair process for the Allen Bradley 20G11ND125AN0NNNNN PowerFlex 755 AC drive begins with a comprehensive diagnostic evaluation to pinpoint the failure. IGBT failures are addressed through direct replacement with tested components. Capacitor bank degradation requires a complete capacitor bank replacement to eliminate DC bus undervoltage faults. Cooling fan malfunctions are rectified by replacing the faulty fan to prevent thermal overloads. Communication errors on the Ethernet/IP network are resolved through mandatory firmware updates and verification of network configuration settings. Current sensor drift is corrected via sensor calibration, or complete replacement if calibration is insufficient. Parameter corruption necessitates a full memory reprogramming using the correct, verified configuration file.
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.