Product Description
The Allen-Bradley 20AD027C3AYNANC0 PowerFlex 70 AC drive is a 480V, 3-phase input unit designed for indoor use and housed in a Wall/Machine Mount IP66/NEMA Type 4X/12 enclosure. It features a full keypad, LCD display, and conformal coating for increased reliability. While it lacks a drive-mounted brake resistor, it includes a brake IGBT and offers enhanced control methods without feedback, exhibiting limited response to speed command changes. This frame size "D" drive delivers 27A continuous, 33A for one minute, and 44A for three seconds, with a normal-duty HP of 20 and a heavy-duty HP of 15. Communication accessories like serial adapters and USBs are compatible, and optional communication kits and a 5V/12V encoder (for PowerFlex 70 Enhanced Control) are available. A service connection board provides temporary DPI/HIM connection for NEMA/UL Type 1 enclosures.
Is Your Device Showing These Signs?
The Allen Bradley 20AD027C3AYNANC0 AC drive commonly experiences issues related to IGBT failures, often indicated by fault codes stemming from overcurrent or ground faults. Resolving these faults necessitates IGBT replacement and thorough inspection of gate driver circuitry for damage. Capacitor bank degradation, leading to DC bus undervoltage faults, requires capacitor replacement to maintain stable operation. Encoder feedback problems, manifesting as speed regulation errors, demand encoder repair or replacement and wiring harness inspection. Communication failures on the Ethernet/IP network are addressed through firmware updates, network configuration verification, and troubleshooting physical layer connectivity.
Technical specifications
The Allen-Bradley 20AD027C3AYNANC0 PowerFlex 70 AC drive is a 480V, 3-phase drive for indoor use, enclosed in an IP66/NEMA Type 4X/12 housing. It has a keypad, LCD display, and conformal coating. It doesn't have a brake resistor but includes a brake IGBT and offers enhanced control without feedback, though with limited speed response. This frame "D" drive provides 27A continuous, with higher amperage ratings for shorter durations, and is rated for 20 HP (normal duty) and 15 HP (heavy duty). It supports various communication accessories and optional kits, including an encoder for enhanced control. A service connection board allows temporary DPI/HIM connection for Type 1 enclosures.
Our Repair Process for the
20AD027C3AYNANC0
Our repair process for the Allen Bradley 20AD027C3AYNANC0 AC drive begins with addressing IGBT failures, indicated by overcurrent or ground fault codes, through IGBT replacement and a meticulous inspection of the gate driver circuitry. Capacitor bank degradation, identified by DC bus undervoltage faults, is resolved by replacing the capacitors to ensure stable operation. Encoder feedback problems, causing speed regulation errors, are corrected through encoder repair or replacement, coupled with a thorough wiring harness inspection. Communication failures on the Ethernet/IP network are rectified by implementing firmware updates, verifying network configurations, and troubleshooting physical layer connectivity issues.
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.
Buying Options
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Ships from Rochester, NY