ABB ACS255-03U-03A1-6 LV AC Micro Drive - UL Open / IP20
Part Number: 3AUA0000199593
Quick Summary
The ABB ACS255-03U-03A1-6 LV AC micro drive provides precise speed and torque control for conveyors. Many machine builders face lengthy commissioning and inconsistent performance; this drive streamlines setup with an integrated keypad and sensorless vector control. It offers IP20 protection and UL (NEMA) open enclosure compatibility for safe installation inside enclosures, delivering reliable operation across demanding environments. With Modbus-RTU communication and selectable V/Hz profiles for variable and constant torque, it supports scalable automation and real-time monitoring, helping OEMs reduce downtime, improve process control, and lower total cost of ownership across automation projects.
Product Information
Extended Description
3AUA0000199593 ABB: The ACS255 drive comes in several variants ensuring seamless integration into machines. The UL (NEMA) TYPE Open / IP20 ACS255 is designed for installation inside another enclosure. Common application includes augers, mixers, pumps, fans and conveyors. The key features include an integrated keypad for easy configuration, precise process control with V/Hz control and sensorless vector control for both AC induction and PM motors, enhanced short circuit protection, operating mode selection with variable torque and constant torque V/Hz profiles, and embedded Modbus-RTU communication interface for real time control and monitoring. Optional external control panel for remote mounting and control is available
Feature → Business Impact → Application: The ACS255-03U-03A1-6 includes an integrated keypad that speeds commissioning and reduces field wiring, shortening time to production and enabling technicians to configure drive parameters on site. This leads to measurable productivity gains on packaging lines and material-handling equipment where rapid setup matters. Feature → Business Impact → Application: Sensorless vector control supports both AC induction and permanent magnet motors, delivering tight torque control at low speeds and improved energy efficiency, especially in pumps and fans where load varies. This capability helps OEMs meet energy reduction targets while maintaining smooth process performance. Feature → Business Impact → Application: V/Hz control with variable and constant torque modes provides optimized startup and running characteristics, reducing mechanical stress and wear in augers, mixers, and conveyors while keeping output consistent. Feature → Business Impact → Application: Embedded Modbus-RTU enables real-time PLC/SCADA integration, enabling centralized monitoring, fault reporting, and remote parameter changes across multi-axis automation systems. Feature → Business Impact → Application: Enhanced short-circuit protection and protective reset features minimize unexpected downtime, improving uptime statistics in harsh industrial environments such as chemical processing or heavy manufacturing. Feature → Business Impact → Application: IP20/open enclosure compatibility simplifies installation inside machine cabinets and control panels, reducing enclosure cost and enabling compact OEM designs. Feature → Business Impact → Application: Optional external control panel support provides flexible control architecture for remote mounting, consolidating operator interfaces and reducing wiring complexity on large production lines.
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FAQs
The ACS255-03U-03A1-6 is designed for UL open (NEMA) Type installations with IP20 protection, allowing installation inside typical machine enclosures. It supports straightforward cabling to input power, motor outputs, and a Modbus-RTU interface. When retrofitting, verify enclosure clearance, heat dissipation, and wiring routing to preserve IP19/20 integrity and maintain electrical safety margins.
The drive provides sensorless vector control for both AC induction and permanent magnet motors, enabling precise torque control across varying loads. It supports typical LV AC motor configurations up to 600 V nominal, with V/Hz control and torque profiles that optimize starting and running performance for conveyors, pumps, and fans.
Yes. The drive includes an embedded Modbus-RTU interface for real-time control and monitoring with PLCs and SCADA systems. This enables centralized fault reporting, parameter tuning, and status signaling across multi-axis automation setups, reducing downtime and simplifying field service.
ACS255 includes enhanced short-circuit protection and safe operating modes designed to minimize unexpected trips. The IP20/open enclosure design shields sensitive electronics when installed in controlled cabinets, while UL compliance supports safe operation in industrial environments, contributing to higher overall equipment reliability.
Projected ROI comes from faster commissioning via the keypad, energy savings from optimized V/Hz control and vector performance, reduced wiring and integration effort through Modbus-RTU, and lower maintenance downtime due to robust protection. For OEMs, this translates to shorter project timelines, lower service costs, and improved process stability across lines.