Product Description
The ABB ACS55-01N-09A8-2 is a robust and reliable general purpose AC drive designed for a wide range of industrial applications. This drive provides precise motor control, enhancing process performance and energy efficiency. It features a user-friendly interface for straightforward programming and commissioning, along with built-in protection functions that ensure operational safety and minimize downtime. The ACS55-01N-09A8-2 offers adjustable speed control, torque boosting, and comprehensive monitoring capabilities, making it a versatile solution for optimizing motor-driven systems. Its compact design allows for easy integration into existing setups, and its durable construction guarantees long-lasting performance in demanding environments. This drive is an ideal choice for applications requiring dependable motor control and energy savings.
Is Your Device Showing These Signs?
ABB ACS55-01N-09A8-2 drives commonly exhibit faults related to DC bus overvoltage or undervoltage, requiring inspection of input power and braking resistors. Overcurrent trips are frequent, necessitating motor insulation testing and drive output IGBT evaluation. Communication errors on the fieldbus, such as Modbus or Ethernet, demand scrutiny of cabling and parameter settings. Cooling fan failures lead to overheating, so fan replacement is essential. Parameter corruption in the control board necessitates firmware re-flashing and parameter reset to factory defaults.
Technical specifications
The ABB ACS55-01N-09A8-2 is a compact, general-purpose AC drive designed for straightforward applications. This drive provides efficient motor control for 3-phase induction motors rated up to 4 kW (5 HP) with a current rating of 9.8 A at 480 VAC. It features a scalar (V/f) control method, offering simple parameter setup and operation. Integrated protection functions include overcurrent, overvoltage, undervoltage, and thermal overload protection, ensuring reliable motor and drive operation. The ACS55-01N-09A8-2 is equipped with a built-in EMC filter (C2 environment) to minimize electromagnetic interference. It accepts a voltage input range of 380-480 VAC, 50/60 Hz, and includes a basic I/O interface with digital inputs and an analog input. The drive supports DIN rail mounting for easy installation in control cabinets.
Our Repair Process for the
ACS55-01N-09A8-2
Our repair process for ABB ACS55-01N-09A8-2 drives begins with a comprehensive fault analysis focusing on common issues such as DC bus voltage irregularities, overcurrent trips, communication errors, and cooling system malfunctions. Input power and braking resistors are inspected, motor insulation is tested, and drive output IGBTs are evaluated. Fieldbus cabling and parameter settings are scrutinized for communication faults. Cooling fans are replaced when found to be defective. Parameter corruption is rectified through firmware re-flashing and a return to factory default settings, ensuring optimal drive 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.

















