ABB ACU-01B (3HNA024871-001) Air Control Unit Overview

Brand Background

ABB is a global technology leader in electrification, industrial automation, motion, and robotics. Within industrial robotics, ABB Robotics is a leading provider of painting and thermal spraying robotic systems. ABB’s paint automation components—including flow control modules, air control units, and atomization controllers—are engineered for precise fluid dynamics, rapid response times, and hazardous-environment operation.

Model Overview: ACU-01B (Part Number: 3B3HNA024871-001)

The ABB ACU-01B (Catalog / Part Number: 3HNA024871-001, replacing the previous generation 3HNA013719-001 ACU-01) is a specialized Pneumatic Air Control Unit / Spray Valve Control Module engineered for ABB paint and spraying robots.

Serving as an electro-pneumatic regulating interface, the ACU-01B regulates airflow parameters—such as shaping air, atomizing air, and paint dosing pressure—delivered to high-speed electrostatic bells or spray guns mounted on ABB robot arms (such as IRB 5400, IRB 5500, and S4P/S4P+ painting robot series). It converts electrical signals from the main robot controller into precise pneumatic pressure regulation to maintain paint application quality.

ACU-01B 3HNA024871-001 CONTROL UNIT

Key Technical Specifications and Parameters

• Manufacturer: ABB Robotics

• Model Designation: ACU-01B

• Part / Ordering Number: 3HNA024871-001 (Cross-reference: 3HNA013719-001)

• Product Type: Electro-Pneumatic Air Control Unit / Spray Control Valve Module

• Robot System Compatibility: ABB Paint Robots (IRB 5400, IRB 5500 series) and S4P / S4P+ Controller Platforms

• Primary Functions:

  • Precise regulation of atomizing air and shaping air flow rates

  • Electro-pneumatic pressure control for paint dosing and flow rate management

  • Rapid pneumatic signal response for synchronized spray gun triggering

• Pneumatic Interface: Precision air regulation valves with multi-port pneumatic distribution manifold connections

• Control Input: Integrated electronic control connection to the robot arm’s wrist/arm manifold wiring and IPS (Integrated Paint System) controller

• Environmental Protection: Designed for safe operation in paint shop environments and hazardous/explosive zones (ATEX / FM compliant when mounted inside certified enclosure systems)

Operating Industries

The ACU-01B Air Control Unit is deployed in high-volume, automated surface finishing and coating operations:

• Automotive OEM Assembly: Automated vehicle body exterior painting, clear-coat application, and primer lines.

• Automotive Tier-1 Parts Manufacturing: Automated spray coating for plastic bumpers, side mirrors, dashboard trims, and wheel rims.

• Aerospace & Defense: Precision surface priming, radar-absorbent coating application, and fuselage protective finishing.

• General Industrial Coating: Automated spray painting of consumer electronics casings, household appliances, metal furniture, and heavy machinery.

• Woodworking & Furniture Manufacturing: High-speed lacquer, stain, and topcoat spraying lines.

Common Usage Scenarios

1. Atomizing & Shaping Air Regulation

   Controlling airflow rates to the electrostatic bell or spray nozzle to alter fan pattern width and atomization particle size during multi-pass robotic spray painting.

2. Paint Dosing & Triggering Control

   Managing pneumatic signal pressure to activate trigger valves and fluid regulators in sync with robotic motion pathways, ensuring consistent film thickness and minimizing overspray.

3. Multi-Color Changeover & Flush Cycles

   Regulating high-pressure solvent and air-purge sequences during automated color-change cycles to clean paint lines rapidly between different vehicle colors.

4. ABB Paint Robot Maintenance & Repair

   Serving as an original replacement pneumatic control module during routine overhaul or repair of IRB series paint robot arms to restore factory paint transfer efficiency.