Product Description
The Allen-Bradley 20BD077A0NNNARD1, a PowerFlex 700 series drive from Rockwell Automation, is a cost-effective solution for large-scale industries, improving efficiency and reducing manpower. Operating on a 480V AC supply, this industrial-grade drive controls motor speed and torque, enhancing control and regulation in various applications. It features an operator interface for parameter input, programming, and diagnostics, along with EMC filtering and a DC bus choke. A standard ControlNet adapter facilitates communication for control, configuration, and data collection. The drive operates between 0-50C and can be stored between -40 and +70C, functioning without derating up to 1000 meters above sea level. Productive features include fast-acting current limit, bus voltage regulation for optimized acceleration/deceleration, and versatile speed regulation in open/closed loop configurations. Slip compensation achieves 0.5% speed regulation without feedback hardware, while droop control enables load sharing. With encoder feedback, it guarantees 0.001% speed regulation for demanding applications.
Is Your Device Showing These Signs?
The Allen Bradley 20BD077A0NNNARD1 PowerFlex 755 AC drive commonly experiences issues related to IGBT failures, often indicated by fault codes and requiring replacement. Capacitor degradation within the DC bus is a frequent problem, leading to over-voltage faults and necessitating capacitor bank replacement. Communication errors on the Ethernet/IP network demand troubleshooting of network configurations and potential firmware upgrades. Overcurrent trips are addressed through motor insulation testing, drive parameter adjustments, and verification of proper load inertia settings. Encoder feedback problems are resolved by inspecting encoder cables, verifying encoder alignment, and confirming correct encoder resolution parameters within the drive configuration.
Technical specifications
The Allen-Bradley 20BD077A0NNNARD1 PowerFlex 700 drive is a cost-effective, industrial-grade solution for large industries that improves efficiency and reduces manpower. It operates on 480V AC, controls motor speed and torque, and features an operator interface, EMC filtering, a DC bus choke, and a ControlNet adapter for communication. It functions in a wide temperature range and altitude, offering features like fast-acting current limit, bus voltage regulation, slip compensation, droop control, and high-precision speed regulation with encoder feedback.
Our Repair Process for the
20BD077A0NNNARD1
Our repair process for the Allen Bradley 20BD077A0NNNARD1 PowerFlex 755 AC drive begins with a comprehensive fault code analysis to diagnose IGBT failures, which are resolved through IGBT replacement. We address capacitor degradation within the DC bus by replacing the capacitor bank, thereby eliminating over-voltage faults. Communication errors on the Ethernet/IP network are corrected through thorough troubleshooting of network configurations and implementation of necessary firmware upgrades. Overcurrent trips are resolved by performing motor insulation testing, adjusting drive parameters, and verifying proper load inertia settings. Encoder feedback problems are corrected by inspecting encoder cables, verifying encoder alignment, and confirming correct encoder resolution parameters within the drive configuration.
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