Product Description
The Allen-Bradley 20AC072A0AYNANN0 PowerFlex 70 Series variable speed drive is a 400V, 50Hz unit compatible with both 3-phase and single-phase applications, offering a 72 Amp rating at maximum voltage and frequency. It controls motor speed and torque by adjusting input frequency and voltage, and features fast-acting current limiting and bus regulation for optimal acceleration/deceleration without tripping. Programmable sleep/wake controls, manual programming options, and compatibility with user-installed communication modules and HMIs allow for comprehensive data monitoring and control process adjustments. The drive includes an English manual for easy installation and start-up, a brake IGBT without a resistor, and filtering. Note that it can interfere with radio signals in residential settings, requiring additional filtering for noise reduction, and should be operated in environments below 50 degrees Celsius.
Is Your Device Showing These Signs?
The Allen Bradley 20AC072A0AYNANN0 PowerFlex 70 AC drive commonly experiences issues related to failed electrolytic capacitors within the DC bus, resulting in DC bus undervoltage faults and drive trips. IGBT failures are also a frequent problem, leading to overcurrent faults and motor control disruption. Communication errors on the Ethernet/IP network, stemming from corrupted firmware or faulty network interface cards, require firmware reflashing or card replacement. Encoder feedback problems, caused by damaged encoder cables or malfunctioning encoder modules, cause speed regulation issues and erratic motor behavior. Resolving these problems restores optimal performance and extends the lifespan of the drive.
Technical specifications
The Allen-Bradley 20AC072A0AYNANN0 PowerFlex 70 is a 400V variable speed drive for 3-phase or single-phase applications, rated at 72 Amps. It regulates motor speed and torque, prevents tripping with current limiting and bus regulation, and offers programmable sleep/wake functions. It supports manual programming, communication modules, and HMIs for data monitoring and control. It comes with an English manual, a brake IGBT (no resistor), and filtering, but may cause radio interference in residential areas and should be used below 50C.
Our Repair Process for the
20AC072A0AYNANN0
Our repair process for the Allen Bradley 20AC072A0AYNANN0 PowerFlex 70 AC drive begins with a comprehensive evaluation to pinpoint the root cause of the failure. Electrolytic capacitors within the DC bus are inspected and replaced to resolve DC bus undervoltage faults and drive trips. IGBTs are tested and replaced to correct overcurrent faults and restore motor control. Firmware is reflashed or the network interface card is replaced to rectify Ethernet/IP communication errors. Encoder cables and modules are inspected and replaced to eliminate speed regulation issues and erratic motor behavior. Following component replacement, the drive undergoes rigorous testing to ensure optimal performance and extended lifespan.
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.
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Ships from Rochester, NY