Product Description
The Rockwell Automation PowerFlex 700 series AC drive, model 20BD077A0AYNADD0, is a 480VAC, 3-phase drive with a 77 Amp output current. Housed in an IP20/Type 1 enclosure with conformal coating, this Frame 4 drive includes a brake IGBT (or standard braking) but lacks a brake resistor. It features a CE EMC directive-compliant second environment filter, a DeviceNet internal communication module (without feedback), and status indicators for all communication options. The drive's user-friendly LCD human-machine interface offers a backlit 7-line display, multi-language support, and functional key shortcuts, while integral EMC filtering provides a compact solution for meeting EMC requirements.
Is Your Device Showing These Signs?
The Allen Bradley 20BD077A0AYNADD0 PowerFlex 755 AC drive commonly experiences issues such as IGBT failures, capacitor degradation leading to DC bus instability, and encoder feedback malfunctions causing erratic motor control. Communication faults on the EtherNet/IP network and nuisance tripping due to improper parameter settings or ground faults are frequent problems. Overcurrent faults often stem from motor insulation breakdown or excessive load conditions. Resolving these issues involves replacing faulty components, recalibrating drive parameters, and performing thorough insulation testing on the motor and associated wiring.
Technical specifications
The Rockwell Automation PowerFlex 700 drive (20BD077A0AYNADD0) is a 480VAC, 3-phase, 77 Amp AC drive in a Frame 4, IP20/Type 1 enclosure with conformal coating. It has a brake IGBT, a CE EMC-compliant filter, a DeviceNet communication module, and a user-friendly LCD interface. It lacks a brake resistor but includes integral EMC filtering.
Our Repair Process for the
20BD077A0AYNADD0
Our repair process for the Allen Bradley 20BD077A0AYNADD0 PowerFlex 755 AC drive begins with a comprehensive diagnostic evaluation to pinpoint the root cause of the reported issue, whether it be IGBT failure, capacitor degradation, encoder malfunction, communication fault, nuisance tripping, or overcurrent fault. The identified faulty components are replaced with new, high-quality parts, and the drive parameters are recalibrated to factory specifications or application-specific requirements. Thorough insulation testing is performed on the motor and associated wiring to prevent recurring overcurrent faults. The repaired drive undergoes rigorous testing under simulated operating conditions to ensure optimal performance and reliability before it is returned.
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
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Ships from Rochester, NY