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SP0404

The Emerson SP0404 is a high-performance universal AC drive from the Unidrive SP series, manufactured by Control Techniques (part of Emerson/Nidec). This model is designed for applications requiring precise motor control in a compact form factor. The Unidrive SP series supports multiple control modes including open-loop vector, closed-loop vector (Rotor Flux Control), and servo control, making it suitable for both induction and servo motors

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Key Parameters Parameter Value Model SP0404 Series Unidrive SP Product Type Universal Variable Speed AC Drive / Inverter Power Rating 1.1 kW Supply Voltage 380V - 480V AC (3-phase) Input Frequency 48 - 62 Hz Typical Input Current 4.3 A Maximum Continuous Input Current 4.4 A Recommended Fuse Rating (IEC) 6 A Recommended Cable Size (IEC) 0.75 mm² (input and output) Recommended Cable Size (UL) 16 AWG (input) / 22 AWG (output) Maximum Switching Frequency 16 kHz Maximum Output Frequency 0 - 3,000 Hz (up to 400 Hz standard, expandable) Control Modes Open-loop vector, Closed-loop vector (RFC), V/Hz control, Servo control (for permanent magnet motors) Motor Compatibility AC induction motors, permanent magnet synchronous motors, servo motors Key Features Modular construction, multi-encoder interface support, integral Modbus RTU, SMARTCARD for parameter storage, Soft PLC functionality, 24V DC control supply option, Safe Torque Off (STO) Communication Modbus RTU / RS-485 (standard); Supports additional fieldbus options via modules (Profibus DP, DeviceNet, CANopen, Ethernet, etc.) Expansion Options Various feedback modules (Universal Encoder Plus, Resolver, etc.), I/O modules, communication modules Protection Rating IP20 / NEMA 1 Cooling Method Air-cooled Ambient Temperature 0°C to +40°C (operation) Certifications CE, UL Typical Applications Small conveyors, packaging machinery, material handling, auxiliary equipment, general industrial automation requiring precise speed control in a compact form factor