Product Description
The Allen-Bradley PowerFlex 70 series 20AC011A0AYNAECN is a compact, reliable, and user-friendly 7.5 HP AC drive with adjustable output frequency. This NEMA/UL Type 1, panel-mountable (vertical orientation only) drive operates on 400 VAC (342-528 VAC range, full power at 400-528 VAC), offering 11.5A output with three-phase input and 5.8A with single-phase. Weighing 6.89 kg and measuring 11.8" x 7.3" x 7.1", it features an integrated Ethernet slot, brake IGBT, enhanced control capabilities, and optional HMI (20-HIM-A3). Available options include encoders, brake resistors, DriveGuard boards, and various communication adapters (DeviceNet, ControlNet, BACnet, Profibus, serial). PowerFlex 70 drives range from 0.5 to 25 HP at 200-240 VAC and 0.5 to 50 HP at 380-600 VAC.
Is Your Device Showing These Signs?
The Allen Bradley 20AC011A0AYNAECN commonly experiences issues related to IGBT failures, capacitor degradation within the power module, and resolver feedback malfunctions. Over time, electrolytic capacitors dry out, leading to DC bus voltage instability and drive trips. Furthermore, the resolver signal can become erratic due to wiring issues or a faulty resolver, causing inaccurate motor control. Addressing these problems involves replacing failed IGBTs, swapping out degraded capacitors with components of equivalent specifications, and troubleshooting/repairing the resolver feedback circuit, including signal calibration.
Technical specifications
The Allen-Bradley PowerFlex 70 20AC011A0AYNAECN is a compact and reliable 7.5 HP AC drive designed for panel mounting. It accepts 400 VAC input (342-528 VAC range) and provides adjustable output frequency with 11.5A (three-phase) or 5.8A (single-phase) output. It includes features like an Ethernet slot, brake IGBT, enhanced control, and optional HMI, with available options such as encoders, brake resistors, and various communication adapters. The PowerFlex 70 series covers a range of 0.5 to 50 HP depending on the voltage.
Our Repair Process for the
20AC011A0AYNAECN
Our repair process for the Allen Bradley 20AC011A0AYNAECN begins with a comprehensive evaluation to confirm IGBT failures, capacitor degradation, and resolver feedback malfunctions. Failed IGBTs are replaced, ensuring proper heat sink compound application. Degraded capacitors within the power module are swapped out with new capacitors meeting or exceeding original specifications to stabilize DC bus voltage. The resolver feedback circuit is thoroughly inspected, wiring issues are corrected, faulty resolvers are replaced, and the resolver signal is calibrated to guarantee accurate motor control.
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.

















