Product Description
The Allen-Bradley 20G11LC1K2JN4NNNNN PowerFlex 755 drive efficiently controls motors with AC/DC input (400V AC/540V DC), precharge, 250kW/300HP output, and 265A capacity, supporting frame sizes 1-5 and 8-10 in an IP20/NEMA/UL Type 1 enclosure (800mm deep, RAL 7032), featuring built-in filtering and a common mode capacitor jumper, but lacking internal resistor and transistor.
Is Your Device Showing These Signs?
The Allen Bradley 20G11LC1K2JN4NNNNN PowerFlex 755 AC drive commonly experiences issues such as IGBT failures, capacitor degradation leading to DC bus instability, and encoder feedback malfunctions causing erratic motor control. Communication faults on the Ethernet/IP network and excessive current draw due to improper motor tuning or load conditions are frequent problems. Firmware corruption necessitates a reflash, and cooling fan failures result in overheating and drive trips. Resolving these problems ensures optimal performance and extends the lifespan of the VFD.
Technical specifications
The Allen-Bradley 20G11LC1K2JN4NNNNN PowerFlex 755 drive is a 250kW/300HP motor controller with AC/DC input, 265A capacity, supporting various frame sizes, and housed in an IP20 enclosure. It includes filtering and a common mode capacitor jumper, but lacks an internal resistor and transistor.
Our Repair Process for the
20G11LC1K2JN4NNNNN
Our repair process for the Allen Bradley 20G11LC1K2JN4NNNNN PowerFlex 755 AC drive begins with a comprehensive diagnostic evaluation to pinpoint the failure. This includes rigorous testing of IGBTs, capacitors, encoder feedback systems, and communication interfaces. We address DC bus instability by replacing degraded capacitors and rectify encoder malfunctions through meticulous inspection and component replacement. Communication faults on the Ethernet/IP network are resolved through configuration adjustments and hardware repairs. Excessive current draw issues are corrected via motor tuning and load analysis. Firmware corruption is resolved by reflashing the drive to the latest stable version. Cooling fan failures are eliminated with fan replacements to prevent overheating and drive trips. Each repair concludes with thorough testing under load to guarantee optimal performance and reliability.
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.