SP4402 – Nidec Control Techniques Unidrive SP AC/Servo Drive, 37-45kW, Size 4, In Stock
Buy the Nidec Control Techniques SP4402, a Unidrive SP AC/servo drive, Size 4, 37-45 kW (50-60 HP), three-phase 380-480 VAC, 74A rated current. In stock and available for fast shipping. Get a quote today.
Key Technical Specifications
- Product Type: AC variable speed/servo drive, Unidrive SP series
- Part Number: SP4402
- Manufacturer: Nidec Control Techniques
- Frame Size: 4 (Size 4)
- Power Rating (Normal Duty): 37 kW / 50 HP
- Power Rating (Heavy Duty): 45 kW / 60 HP
- Rated Current: 74 A
- Input Voltage: 3-phase, 380-480 VAC
- Input Frequency: 48–65 Hz
- Max. Output Frequency: Up to 550 Hz
- I/O Configuration: 3 analog inputs, 2 analog outputs, 6 digital inputs, 4 digital outputs
- Control Modes: Open loop vector, fixed/quadratic V/F, RFC sensorless, closed loop vector, Servo, Regen
- Product Status: Discontinued by manufacturer (Unidrive SP series declared obsolete)
Design and Performance
Sensorless RFC Mode for High Performance Without a Speed Sensor
Operating in RFC (Rotor Flux Control) mode, the SP4402 uses currents, voltages, and motor parameters to estimate flow amplitude and motor speed without the need for a speed sensor, delivering closed-loop-like performance from a standard induction motor.
Obsolete Platform Still Widely Supported for Maintenance
Nidec has officially declared the entire Unidrive SP series obsolete, but the SP4402 remains actively sourced new, refurbished, and via repair-exchange programs for maintenance and like-for-like replacement, avoiding the complications of a full drive system retrofit.
Compact Frame 4 Design for Space-Efficient Panel Integration
The SP4402 features a compact yet robust Frame Size 4, designed to optimize space utilization in control panels, making it easier to integrate into existing systems without requiring extensive modifications.
Extensive I/O for Complex Automation Networks
With 3 analog inputs, 2 analog outputs, 6 digital inputs, and 4 digital outputs, the SP4402 offers an extensive array of connections enabling enhanced integration within complex control systems.
Full Five-Mode Operation Including Regen
Beyond open loop, RFC, closed loop vector, and Servo modes, the SP4402 also supports Regen mode for regenerative front-end operation, allowing bi-directional power flow for increased efficiency in applications requiring energy recovery.
Why Buy the SP4402 From Us
- In stock and ready for immediate dispatch
- Fast shipping on every order
- Commercial advisory support to help you confirm compatibility with your motor application, or explore modern replacement options if you’re upgrading away from this obsolete platform
- Competitive pricing — get a quote in minutes
