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Product Description
The Allen-Bradley/Rockwell Automation 20G11ND011AA0NNNNN AC drive, a PowerFlex 755 model, is designed for controlling fans, pumps, conveyors, and similar components in larger systems. It offers numerous integrated features and expansion slots for optional modules like feedback, I/O, communication, safety, and auxiliary power, promising system improvements and a strong return on investment. This drive utilizes Force technology motor control algorithms (Permanent Magnet, Sensorless Vector, Volts per Hertz, and Flux Vector) to adjust speed, regulate torque, and control position. It accepts a 480V AC or 650V DC input voltage and features AC input with pre-charge and DC terminals. Housed in an IP20 NEMA/UL Type Open enclosure (Frame 2), it has an 11.5 Amp rating and a 5.5 kilowatt power output. Standard features include a default CM cap connection (with removed jumper) and dynamic braking with an internal transistor (standard for frames 1-5, optional for 6-7). The drive measures 134.5mm (5.3") wide, 424.2mm (16.7") high, and 212mm (8.35") deep, weighing 7.8kg (17.2 lbs).
Is Your Device Showing These Signs?
The Allen Bradley 20G11ND011AA0NNNNN PowerFlex 755 AC drive commonly experiences issues such as IGBT failures, DC bus capacitor degradation leading to over-voltage faults, and control board malfunctions causing communication errors on EtherNet/IP networks. Resolving nuisance tripping due to improper motor parameter configuration or drive overload settings is a frequent task. Correcting firmware corruption that results in erratic drive behavior and addressing issues with the cooling fan assembly to prevent overheating are standard procedures. Repairing damaged power terminals and replacing failed encoder feedback modules are also typical fixes.
Technical specifications
The Allen-Bradley/Rockwell Automation 20G11ND011AA0NNNNN AC drive, a PowerFlex 755 model, is designed for controlling various industrial components like fans and pumps. It offers integrated features, expansion slots for optional modules, and uses Force technology motor control algorithms for precise speed, torque, and position control. It accepts 480V AC or 650V DC input, is housed in an IP20 NEMA/UL Type Open enclosure (Frame 2), has an 11.5 Amp rating and 5.5 kilowatt power output. It includes standard features like a CM cap connection and dynamic braking with an internal transistor. Its dimensions are 134.5mm x 424.2mm x 212mm and it weighs 7.8kg.
Our Repair Process for the
20G11ND011AA0NNNNN
Our repair process for the Allen Bradley 20G11ND011AA0NNNNN PowerFlex 755 AC drive begins with a comprehensive diagnostic evaluation to pinpoint the failure. This evaluation includes a thorough inspection of IGBTs, DC bus capacitors, and the control board for malfunctions. We address communication errors on EtherNet/IP networks, resolve nuisance tripping by correcting motor parameter configurations and drive overload settings, and correct firmware corruption that causes erratic drive behavior. The cooling fan assembly is inspected and repaired or replaced as needed to prevent overheating. Damaged power terminals are repaired, and failed encoder feedback modules are replaced to ensure optimal performance.
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
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Ships from Rochester, NY