Product Description
The Allen-Bradley PowerFlex 700S drive (20DD156A0NNNANNNN) is a 480V AC, three-phase adjustable frequency drive from Rockwell Automation, delivering up to 156 amps for normal-duty industrial applications. It features an IP20/NEMA Type 1 enclosure, an IGBT braking system, adjustable bus undervoltage trip protection, and heat sink thermistor-based overtemperature protection. While lacking onboard controls (using a blank cover HMI) and included documentation, it offers a 0.25-second logic control ride-thru and a 15-millisecond power ride-thru at full load for enhanced reliability during brief power interruptions.
Is Your Device Showing These Signs?
The Allen Bradley 20DD156A0NNNANNNN PowerFlex 755 AC drive commonly experiences issues such as IGBT failures, capacitor degradation leading to DC bus undervoltage faults, and encoder feedback problems causing erratic motor control. Communication errors on Ethernet/IP or other network interfaces are frequent, stemming from configuration mismatches or hardware faults. Overcurrent trips and nuisance tripping are addressed through proper motor parameter tuning and load analysis. Firmware corruption necessitates reflashing the drive to restore functionality.
Technical specifications
The Allen-Bradley PowerFlex 700S drive (20DD156A0NNNANNNN) is a 480V, 3-phase AC adjustable frequency drive capable of 156 amps for normal-duty applications. It has an IP20/NEMA Type 1 enclosure, IGBT braking, undervoltage trip protection, and heat sink overtemperature protection. It lacks onboard controls and documentation, but provides short ride-thru capabilities for both logic control (0.25 seconds) and power (15 milliseconds at full load).
Our Repair Process for the
20DD156A0NNNANNNN
Our repair process for the Allen Bradley 20DD156A0NNNANNNN PowerFlex 755 AC drive begins with a comprehensive diagnostic evaluation to pinpoint the failure. We address IGBT failures by replacing the faulty components with new, high-quality replacements. Capacitor degradation is resolved through capacitor replacement, ensuring stable DC bus voltage. Encoder feedback issues are corrected by repairing or replacing the encoder and associated wiring. Communication errors are rectified by verifying network configurations and repairing or replacing faulty network interface hardware. Overcurrent trips are resolved by meticulously tuning motor parameters and analyzing load characteristics. Firmware corruption is corrected by reflashing the drive with the correct firmware version.
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