Product Description
The Allen-Bradley 20DJ125A3NNNA2DCL is a robust 600V AC, three-phase adjustable frequency drive with a 125-amp input capacity, designed for demanding industrial motor control applications. Featuring an IP20/NEMA Type 1 enclosure, a full numeric LCD interface, adjustable bus undervoltage trip, and microprocessor-monitored heat sink thermistor for overheat protection, it offers reliable performance with a 0.25-second logic control ride-thru and 15-millisecond power ride-thru. Note that it lacks an integrated braking system, requiring external solutions when braking is needed.
Is Your Device Showing These Signs?
The Allen Bradley 20DJ125A3NNNA2DCL Adjustable Frequency AC Drive commonly experiences issues related to IGBT failures, capacitor degradation affecting DC bus voltage stability, and encoder feedback malfunctions causing erratic motor control. Resolving these problems includes replacing faulty power components, recapping the drive to address capacitance drift, and troubleshooting/replacing the encoder or its wiring to restore accurate speed and position control. Parameter corruption within the drive's memory also occurs, necessitating a firmware reload and parameter reconfiguration to factory settings or user-defined profiles. Overcurrent faults and overheating are addressed through fan replacement and heatsink cleaning to ensure proper thermal management.
Technical specifications
The Allen-Bradley 20DJ125A3NNNA2DCL is a durable 600V, 125A three-phase AC adjustable frequency drive for industrial motor control. It features an IP20/NEMA Type 1 enclosure, LCD interface, undervoltage trip adjustment, overheat protection, and ride-thru capabilities. However, it requires an external braking solution.
Our Repair Process for the
20DJ125A3NNNA2DCL
Our repair process for the Allen Bradley 20DJ125A3NNNA2DCL Adjustable Frequency AC Drive begins with a comprehensive diagnostic assessment to pinpoint the root cause of the malfunction, focusing on IGBT health, capacitor integrity, and encoder functionality. We replace any failed IGBTs and address DC bus voltage instability by recapping the drive with high-quality capacitors. Encoder issues are resolved through troubleshooting, wiring repair, or complete encoder replacement to guarantee precise motor control. Parameter corruption is corrected by reloading the firmware and reconfiguring parameters to either factory defaults or specified user profiles. Overcurrent and overheating problems are mitigated by replacing cooling fans and thoroughly cleaning heatsinks to restore optimal thermal management, ensuring reliable operation.
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