Product Description
The Allen-Bradley 20BD248A3AYNACB0 PowerFlex 700 AC drive is a 480V, 3-phase adjustable frequency drive designed for controlling 3-phase induction motors in applications ranging from simple speed control to demanding torque control. It offers world-class motor control with Volts per Hertz, sensorless vector, and vector control with Allen-Bradley's FORCE technology. This drive features integral EMC filtering with a built-in DC bus choke and common mode capacitors for a compact, all-in-one EMC solution. Its zero-stacking, bookshelf design allows individual drive access, and an internal communication module facilitates easy integration. The unit delivers an output current of 248 Amps, has an IP20/Type 1 enclosure, a Frame 6 size, standard 120V I/O control, an installed brake IGBT (but no brake resistor), an LCD with a full numeric keypad, and a ControlNet internal communication module without a feedback module.
Is Your Device Showing These Signs?
The Allen Bradley 20BD248A3AYNACB0 PowerFlex 755 AC drive commonly experiences issues related to IGBT failures, often indicated by fault codes stemming from overcurrent or ground faults. Capacitor bank degradation is a frequent problem, leading to DC bus voltage instability and reduced drive performance. Encoder feedback problems disrupt accurate motor control, resulting in speed regulation errors and potential drive trips. Communication network failures, specifically with EtherNet/IP configurations, cause loss of connectivity and prevent remote monitoring or control. Cooling fan malfunctions contribute to overheating, accelerating component wear and causing thermal overload faults.
Technical specifications
The Allen-Bradley 20BD248A3AYNACB0 PowerFlex 700 AC drive is a 480V, 3-phase adjustable frequency drive for controlling 3-phase motors. It offers various control methods, including Volts per Hertz and vector control, and features built-in EMC filtering. Its compact design allows for easy access and integration, and it includes features like a brake IGBT, LCD keypad, and ControlNet communication. Key specs include a 248 Amp output, IP20/Type 1 enclosure, and standard 120V I/O control.
Our Repair Process for the
20BD248A3AYNACB0
Our repair process for the Allen Bradley 20BD248A3AYNACB0 PowerFlex 755 AC drive begins with a comprehensive diagnostic evaluation to verify IGBT health, capacitor bank integrity, encoder feedback accuracy, communication network functionality, and cooling system performance. Confirmed IGBT failures require immediate replacement with matched components, followed by rigorous testing under load. Degraded capacitor banks are replaced to restore DC bus stability and optimal drive performance. Encoder feedback issues necessitate thorough inspection, repair, or replacement of the encoder and associated wiring to ensure precise motor control. Communication network failures are addressed through detailed troubleshooting, cable replacement, and configuration adjustments to re-establish EtherNet/IP connectivity. Malfunctioning cooling fans are replaced to prevent overheating and maintain proper operating temperatures. Each repaired drive undergoes extensive testing to validate functionality and adherence to performance specifications 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.

















