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Product Description
The Allen-Bradley PowerFlex 700S series 20DD180A3NNNA1NBB is a robust 480V AC, 180-amp adjustable-frequency drive for three-phase industrial applications, featuring an IP20/NEMA Type 1 enclosure for indoor use, a user-friendly LCD, adjustable undervoltage trip, heat sink overtemperature protection, and ride-thru capabilities of 0.25 seconds (inactive) and 15 milliseconds (full load).
Is Your Device Showing These Signs?
The Allen Bradley 20DD180A3NNNA1NBB PowerFlex 755 AC drive commonly experiences issues related to IGBT failures, often indicated by fault codes stemming from overcurrent or ground faults. Capacitor degradation within the DC bus section is a frequent cause of drive malfunction, leading to voltage regulation problems and reduced performance. Encoder feedback issues, manifesting as speed instability or positioning errors, require thorough inspection of the encoder cable and module. Communication faults on the Ethernet/IP network, potentially due to firmware incompatibility or configuration errors, demand network diagnostics and parameter verification. Overheating, resulting from inadequate cooling or blocked heatsinks, necessitates immediate attention to prevent thermal damage to sensitive components.
Technical specifications
The Allen-Bradley PowerFlex 700S 20DD180A3NNNA1NBB is a durable 480V, 180A adjustable-frequency drive designed for three-phase industrial applications. It includes an IP20/NEMA Type 1 enclosure for indoor use, an LCD, adjustable undervoltage trip, heat sink overtemperature protection, and ride-thru capabilities.
Our Repair Process for the
20DD180A3NNNA1NBB
Our repair process for the Allen Bradley 20DD180A3NNNA1NBB PowerFlex 755 AC drive begins with a comprehensive diagnostic evaluation to pinpoint the root cause of the failure, focusing on common issues such as IGBT failures indicated by overcurrent or ground fault codes, capacitor degradation within the DC bus section, encoder feedback malfunctions causing speed instability, communication faults on the Ethernet/IP network, and overheating due to cooling inefficiencies. Upon identification of the fault, we proceed with component-level repairs or replacements using only qualified parts, including IGBT modules, DC bus capacitors, encoder modules, and communication interfaces. Following the repair, the drive undergoes rigorous testing under load conditions to verify its performance and reliability, ensuring it meets or exceeds original factory specifications. Finally, the repaired drive is returned with a detailed repair report outlining the work performed and any recommendations for preventative maintenance to avoid future 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
To receive a quote within 2 hours, please provide us with the details of your requirements. Our team will promptly review your request and send you a custom offer.
Ships from Rochester, NY