Product Description
The Allen-Bradley 20DD3P4A3EYYANNNN adjustable frequency AC drive, part of the Rockwell Automation family, accepts 480V AC three-phase input and handles up to 3.4 amps in normal duty. Its IP20/NEMA Type 1 enclosure suits indoor use, while a numeric LCD simplifies operation. Features include IGBT braking, adjustable undervoltage trip, microprocessor-controlled heat sink thermistor for overtemp protection, and ride-thru capabilities of 0.25 seconds during inactivity and 15 milliseconds at full load.
Is Your Device Showing These Signs?
The Allen Bradley 20DD3P4A3EYYANNNN Servo Drive commonly experiences issues such as overcurrent faults stemming from shorted motor windings or excessive load, requiring motor or load analysis. Communication errors on the EtherNet/IP network demand troubleshooting of cabling, IP address conflicts, or PLC configuration. Drive overheating is addressed through inspection of the heatsink, fan functionality, and ambient temperature. Parameter corruption necessitates a firmware reload and careful parameter reconfiguration. Inconsistent performance is resolved by tuning the PID loops and verifying feedback device integrity, such as the encoder.
Technical specifications
The Allen-Bradley 20DD3P4A3EYYANNNN is a 480V AC three-phase adjustable frequency drive designed for indoor use (IP20/NEMA Type 1). It handles up to 3.4 amps in normal duty and features a numeric LCD, IGBT braking, adjustable undervoltage trip, microprocessor-controlled heat sink thermistor for overtemp protection, and ride-thru capabilities.
Our Repair Process for the
20DD3P4A3EYYANNNN
Our repair process for the Allen Bradley 20DD3P4A3EYYANNNN Servo Drive begins with a thorough assessment of the reported fault. Overcurrent faults require immediate motor winding and load analysis to identify shorts or excessive strain. Communication errors on the EtherNet/IP network demand systematic troubleshooting of cabling, resolution of IP address conflicts, and verification of PLC configuration. Overheating issues are addressed by inspecting the heatsink, confirming fan functionality, and assessing ambient temperature. Parameter corruption necessitates a complete firmware reload followed by meticulous parameter reconfiguration. Inconsistent performance is resolved through precise tuning of the PID loops and verification of feedback device integrity, including the encoder.
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.

















