ABB ACS380-040S-02A6-4 AC Drive

The ABB ACS380-040S-02A6-4 is a compact, high‑performance AC drive from the ACS380 series, designed for precise speed and torque control of three‑phase induction motors. With a power rating of 0.75 kW (1 HP) and input voltage of 380‑480 V AC, this drive is suitable for a wide range of industrial applications including conveyors, pumps, fans, mixers, and extruders. The ACS380 series offers sensorless vector control, an intuitive user interface, and embedded fieldbus connectivity.

Technical Specifications

Input: 3‑phase, 380‑480 V AC ±10%, 50/60 Hz. Output: 3‑phase, 0 to input voltage, 0‑599 Hz. Continuous output current: 2.1 A (variable torque rating). Overload capability: 150% for 60 seconds (constant torque) or 1.5× nominal for variable torque. Motor power: 0.75 kW (1 HP). Control method: sensorless vector control for AC induction motors and permanent magnet motors. Protection rating: IP20 (open type). Dimensions: 6.69 in (H) x 2.76 in (W) x 7.52 in (D). Net weight: 3.1 lbs. Mounting: Panel mount with integrated heatsink. Operating temperature: ‑10°C to 40°C (no derating), up to 60°C with derating. Switching frequency: programmable 1‑16 kHz, default 4 kHz.

Key Features

• Sensorless vector control for high torque accuracy at low speeds

• Embedded PID controller for pressure, flow, or temperature regulation

• Built‑in Modbus RTU and Modbus TCP (depending on variant)

• Pre‑programmed application macros for quick setup (factory, pump, fan, etc.)

• Adaptive programming (sequence programming) for custom logic

• Dynamic braking and flux braking for controlled deceleration

• Compact design saves panel space

• Coated circuit boards for protection against dust and humidity

• Integrated EMC filter (Category C2) for CE compliance

Control and Connectivity

The ACS380-040S-02A6-4 features analog inputs (0‑10 V, 0‑20 mA, 4‑20 mA), analog output (0‑20 mA), and six digital inputs (configurable for start/stop, direction, multi‑speed). Two relay outputs (NO/NC) are available for drive status indication (e.g., running, fault). The drive includes a built‑in RS‑485 interface supporting Modbus RTU and ABB drives communication protocols. An optional fieldbus adapter can be added for PROFIBUS DP, EtherNet/IP, PROFINET, or CANopen. The drive also provides a safe torque off (STO) function as standard, meeting SIL3 requirements.

Programming and User Interface

The ACS380 comes with a basic control panel (integrated or optional remote panel). The panel features a backlit alphanumeric display for parameters, actual values, and fault messages. The drive can also be configured via the ABB Drive Composer PC tool (free) using a USB‑to‑RS‑485 adapter. Application macros simplify initial setup by automatically adjusting parameters for common applications (e.g., Factory Macro for start/stop via digital inputs, PID Macro for closed‑loop control). The drive supports up to 20 parameter sets that can be saved and restored.

Installation and Wiring

Mount the drive vertically on a non‑flammable surface, maintaining 25 mm clearance above and below for airflow. Connect input power to terminals U1, V1, W1, and motor leads to U2, V2, W2. Use shielded motor cables and ground the shield at both ends for EMC compliance. Control signal cables should be separated from power cables by at least 200 mm. The STO terminals must be connected to +24 V DC to enable the drive; leaving them open disables the output for safety. An external input fuse (10 A, class gG) is required.

Applications

Typical uses include variable speed control of conveyors in material handling, fan speed regulation in HVAC systems, pump control in water treatment, and extruder drives in plastics processing. The drive’s compact size makes it ideal for machine building in food and beverage, packaging, and textile industries.

Environmental and Compliance

The ACS380 is CE, UL, cUL, and RoHS compliant. It meets EN 61800‑3 (EMC) for industrial environments. Operating humidity 5‑95% non‑condensing. Altitude up to 1000 m without derating, up to 4000 m with derating of current and voltage. Storage temperature ‑40°C to +70°C.

Conclusion

The ABB ACS380-040S-02A6-4 AC drive delivers reliable, precise motor control in a compact package. Its sensorless vector control, embedded communication, and robust construction make it a versatile choice for industrial automation requiring energy‑efficient speed regulation.