ABB 3AUA0000199525 Motors & Drives - UL Open / IP20
Part Number: 3AUA0000199525
Quick Summary
ACS255 drive delivers precise V/Hz and sensorless vector control for automated pumps and conveyors. Engineers often struggle with fitting a drive inside compact enclosures while maintaining reliable protection and simple setup. UL-listed, NEMA Open type compatibility, and IP20 protection ensure safe operation in harsh environments and straightforward machine integration. Configured via an integrated keypad and Modbus-RTU, it supports scalable automation with ABB PLCs, reducing commissioning time and risk. By combining compact form, reliable protection, and flexible torque profiles, the ACS255 helps you reduce energy use, maintenance cost, and downtime. This makes it suitable for lines requiring precise speed control across pumps, fans, mixers, and conveyors.
Product Information
Extended Description
3AUA0000199525 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
Integrated keypad enables on-device configuration for rapid commissioning and reduced wiring errors, translating to faster line startup and fewer misconfigurations in production runs. The business impact is lower installation costs and shorter time-to-value, especially on lines with frequent product changes. This feature is well-suited for ABB ACS255 applications such as pumps, conveyors, augers, and mixers where field adjustments are common and uptime matters. V/Hz control combined with sensorless vector algorithms delivers smoother speed regulation and robust startup torque for both AC induction and PM motors. The result is improved process stability, reduced motor heat, and measurable energy savings during variable-load operation. This capability supports challenging applications like fans, pumps, and mixers that require precise torque response and reliable performance under irregular loads. Enhanced short circuit protection and fault handling help maintain uptime in harsh industrial environments. Real-time protection and diagnostics enable proactive maintenance, faster root-cause analysis, and lower repair costs. By minimizing nuisance trips and preserving safe operation, the ACS255 aligns with plant safety policies while easing regulatory compliance for regulated equipment. Embedded Modbus-RTU enables real-time control and monitoring from standard PLCs, HMIs, or SCADA systems. This tight integration reduces wiring complexity, enables remote diagnostics, and supports alarms and parameter changes without on-site visits. The outcome is better asset visibility, faster response to process deviations, and smoother batch or line-changeovers across multiple production lines. Operating mode selection with variable torque and constant torque V/Hz profiles lets you tailor the drive to load characteristics, delivering energy efficiency and smoother acceleration. Compared with fixed-torque drives, this approach reduces peak power and extends motor life while maintaining performance during start-up and stall. With enclosure compatibility and optional remote control panels, it supports scalable automation across diverse machine designs.
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FAQs
Yes. The ACS255 is designed for installation inside enclosures with UL listing and an IP20 rating, supporting open NEMA Type Open configurations. When mounting, ensure adequate ventilation and clearance to prevent overheating, and verify wiring complies with 120 V input and Modbus-RTU connections. The built-in keypad and Modbus-RTU interface simplify commissioning and diagnostic access.
Sensorless vector control estimates rotor flux to deliver near-field oriented control without feedback encoders. This provides smoother torque, faster response to load changes, and better starting characteristics for both AC induction and PM motors. In practice, operators see steadier speeds, lower vibration, and improved efficiency, even on variable loads such as conveyors, fans, and pumps.
The 120 V ACS255 is ideal for small-to-medium machines that require precise speed control in compact spaces. Key beneficiaries include augers, mixers, pumps, fans, and conveyors used in packaging, food processing, and material handling. The integration-friendly design, 120 V common utility standard, and Modbus-RTU compatibility simplify retrofit projects and new line installs.
ABB’s ACS255 120 V drive is UL-listed and designed for IP20 open enclosure installations with NEMA-type compatibility, supporting safe operation in plant environments. Short-circuit protection, robust fault handling, and modular configuration help meet safety and reliability requirements. While CE compliance will depend on regional regulations, the device supports industry-standard interfaces and protective features for regulated equipment.
With Modbus-RTU remote diagnostics, built-in protection, and easy field configuration, the ACS255 reduces maintenance trips and minimizes downtime. The predictable torque control and energy efficiency translate to lower operating costs and faster payback on modernization projects. ABB-compatible diagnostics enable proactive maintenance strategies and longer asset life across pumps, fans, and conveyors.