Product Description
The Allen-Bradley 20BD3P4A3AYNAEB0 PowerFlex 700 AC drive is a 480V, 3-phase, 60Hz unit with a 3.4A output and 2.0 horsepower, designed for high-performance speed and torque control of 3-phase induction motors. It features a user-friendly interface with a keypad, LCD, and status indicators, along with EtherNet/IP communication for comprehensive network control. This drive includes an internal brake transistor, CE filter, and CM choke, but lacks an internal dynamic brake resistor. It offers slip compensation for precise speed regulation, supports various start/stop modes, and provides robust diagnostic and protective features, including electronic motor protection and adjustable bus regulation for optimized acceleration and deceleration.
Is Your Device Showing These Signs?
The Allen Bradley 20BD3P4A3AYNAEB0 PowerFlex 755 AC drive commonly experiences failures related to the DC bus capacitors degrading, causing over-voltage faults and reduced drive performance. IGBT failures are frequent due to thermal stress or excessive load, leading to drive trips and potential damage to the motor. Communication issues arise from corrupted firmware or faulty Ethernet/IP modules, disrupting network connectivity and control. Cooling fan malfunctions cause overheating, accelerating component degradation and resulting in thermal faults. Current sensor drift affects accurate motor control and protection, necessitating calibration or replacement.
Technical specifications
The Allen-Bradley 20BD3P4A3AYNAEB0 PowerFlex 700 AC drive is a 480V, 3-phase drive designed for precise speed and torque control of 3-phase induction motors. It outputs 3.4A at 2.0 horsepower and features an EtherNet/IP interface, keypad/LCD, internal brake transistor, CE filter, and CM choke. It lacks an internal dynamic brake resistor but offers slip compensation, various start/stop modes, and robust protection features.
Our Repair Process for the
20BD3P4A3AYNAEB0
Our repair process for the Allen Bradley 20BD3P4A3AYNAEB0 PowerFlex 755 AC drive begins with a comprehensive diagnostic evaluation to pinpoint the root cause of failure, focusing on common issues such as DC bus capacitor degradation, IGBT failures, communication problems, cooling fan malfunctions, and current sensor drift. We replace degraded DC bus capacitors to eliminate over-voltage faults and restore optimal drive performance. Faulty IGBTs are replaced with new, high-quality components to prevent drive trips and motor damage. Corrupted firmware is updated or re-flashed, and faulty Ethernet/IP modules are replaced to resolve communication issues and restore network connectivity. Malfunctioning cooling fans are replaced to prevent overheating and component degradation. Current sensors are calibrated or replaced to ensure accurate motor control and protection. Following component replacement, the drive undergoes rigorous testing under load to verify proper functionality and adherence to factory specifications, ensuring a reliable and long-lasting repair.
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.

















