Product Description
The Allen-Bradley 20BD125A3AYNANB0 is a compact, advanced PowerFlex 700 AC drive designed for controlling 3-phase induction motors. It accepts 3-phase input voltages from 342 to 528 VAC, with a nominal input of 480 VAC. At its output, it delivers 125 Amps and 100 Horsepower within a 460-528 VAC range. This frame-5 drive features a conformally coated IP20 enclosure, requires vertical installation with 4-inch spacing, and weighs 37.1 kg with dimensions of 27.1 x 12.1 x 10.8 inches. It includes an integrated HMI (LCD and keypad) for configuration, monitoring, and troubleshooting, standard control (no feedback), 115 VAC I/O, a CE line filter, brake IGBT, and CM choke. It lacks a brake resistor and communication interface. The drive dissipates 1527 Watts and is cooled by a 200 CFM fan, maintaining operation within a 0-50C temperature range. Configuration details are available in the user manual.
Is Your Device Showing These Signs?
The Allen Bradley 20BD125A3AYNANB0 PowerFlex 755 AC drive commonly experiences issues such as IGBT failures, capacitor degradation leading to DC bus undervoltage faults, and encoder feedback problems causing erratic motor control. Overcurrent trips are frequent due to improper motor tuning or insulation breakdown. Communication errors on the EtherNet/IP network and HMI interface are addressed through firmware updates and parameter verification. Cooling fan malfunctions result in overheating and require immediate replacement to prevent thermal damage to sensitive components. Parameter corruption necessitates a factory reset and reprogramming.
Technical specifications
The Allen-Bradley 20BD125A3AYNANB0 is a PowerFlex 700 AC drive for 3-phase induction motors, accepting 342-528 VAC input and outputting 125A/100HP at 460-528 VAC. This frame-5 drive has a conformally coated IP20 enclosure, requires vertical mounting, and includes an integrated HMI, standard control, 115 VAC I/O, CE line filter, brake IGBT, and CM choke. It lacks a brake resistor and communication interface. It dissipates 1527W, is fan-cooled, and operates between 0-50C.
Our Repair Process for the
20BD125A3AYNANB0
Our repair process for the Allen Bradley 20BD125A3AYNANB0 PowerFlex 755 AC drive begins with a comprehensive diagnostic evaluation to pinpoint the root cause of the reported issue, focusing on common failure points such as IGBTs, capacitors, encoders, and cooling fans. Overcurrent trips are investigated through motor tuning analysis and insulation testing. Communication errors are resolved via firmware updates and parameter verification. Parameter corruption requires a complete factory reset and subsequent reprogramming. Defective components are replaced with original or equivalent parts, and the drive undergoes rigorous testing under load 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.

















