The ACU-01B (model: 3HNA024871-00103) is a dedicated AC control unit developed by ABB, primarily used for integrating, monitoring, and optimizing the operation of ABB AC drives (e.g., ACS880, ACS580 series) in industrial automation systems.

Application Cases of ACU-01B 3HNA024871-00103

1. Synchronized Control of Conveyor Systems in Automotive Assembly Plants

Background

Challenge

• Achieve millisecond-level synchronization between 8 independent drives to ensure seamless transfer of chassis components.
• Enable real-time monitoring of drive status (e.g., load current, temperature) and rapid fault response to minimize downtime.
• Integrate with the plant’s existing Siemens S7-1500 PLC via a unified communication protocol.

ACU-01B Solution

• The ACU-01B was deployed as the core control node, connecting all 8 ACS880 drives via Profinet (100Mbps industrial Ethernet) for low-latency data transmission.
• It executed custom synchronization algorithms to adjust drive output torque/speed in real time, ensuring a speed deviation of ≤±0.1% between adjacent conveyors.
• Built-in diagnostic functions transmitted fault codes (e.g., overcurrent, voltage fluctuations) to the PLC and on-site HMI within 200ms, enabling predictive maintenance.

ACU-01B 3HNA024871-00103 ABB PDF

3HNA024871-001

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