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SP0203

The Emerson SP0203 is a compact, high-performance universal AC drive from the Unidrive SP series, manufactured by Control Techniques (part of Emerson/Nidec). This model is designed for low-power applications requiring precise motor control in a small footprint. It 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 SP0203 Series Unidrive SP Product Type Universal Variable Speed AC Drive / Servo Drive Frame Size Size 0 Supply Voltage 200V - 240V AC (1-phase or 3-phase) Input Frequency 48 - 62 Hz Typical Input Current 6.0 A (3-phase supply) / 9.6 A (1-phase supply) Maximum Continuous Input Current 6.9 A (3-phase) / 9.6 A (1-phase) Recommended Fuse Rating 12 A (IEC gG) Recommended Cable Size (IEC) 1.5 mm² (Input) / 0.75 mm² (Output) Recommended Cable Size (UL) 14 AWG (Input) / 20 AWG (Output) Maximum Switching Frequency 16 kHz (programmable) Maximum Output Frequency 0 - 3,000 Hz Control Modes Open-loop vector (sensorless 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 Control Sampling Rates 167 μs (current controllers at 3/6/12 kHz), 125 μs (at 4/8/16 kHz) 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.) Protection Rating IP20 / NEMA 1 Cooling Method Air-cooled (convection) Ambient Temperature -10°C to +40°C (operation, derating required at higher temperatures) Certifications CE, UL Typical Applications Small conveyors, packaging machinery, material handling, auxiliary equipment, textile machines, and general industrial automation requiring precise speed control in a compact form factor