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Product Description
The Allen-Bradley PowerFlex 755 drive, part number 20G14NB477JA0NNNNN, is a DC input, 240VAC/325VDC motor controller with precharge, IP20/IP00 open-type enclosure, built-in filtering, a default common mode capacitor jumper, and a transistor for versatile motor control, but lacks internal resistors.
Is Your Device Showing These Signs?
The Allen Bradley 20G14NB477JA0NNNNN 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, requiring firmware updates or replacement of the control board. Overcurrent trips are often traced to ground faults in the motor or cabling, or parameter misconfigurations affecting motor overload protection. Cooling fan malfunctions result in overheating and thermal shutdowns, necessitating fan replacement to maintain optimal drive performance.
Technical specifications
The Allen-Bradley PowerFlex 755 drive (20G14NB477JA0NNNNN) is a DC input, 240VAC/325VDC motor controller with precharge, an open-type IP20/IP00 enclosure, built-in filtering, a common mode capacitor jumper, and a transistor, but it does not have internal resistors.
Our Repair Process for the
20G14NB477JA0NNNNN
Our repair process for the Allen Bradley 20G14NB477JA0NNNNN PowerFlex 755 AC drive begins with a comprehensive diagnostic evaluation to pinpoint the failure. This includes a thorough inspection of IGBTs, capacitors, encoder feedback systems, and network communication interfaces to identify component-level defects. Suspect components are replaced with verified, high-quality replacements. Ground faults in the motor or cabling are identified and corrected, and motor overload protection parameters are verified and adjusted. Cooling fans are inspected and replaced if malfunctioning. Firmware updates are applied to resolve communication errors. The drive undergoes rigorous testing under load conditions to ensure it meets or exceeds original performance specifications before it is returned.
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