Product Analysis: Nidec Control Techniques SP4402
The SP4402 is a high-power Frame 4 AC drive within the versatile Unidrive SP family from Nidec Control Techniques. Delivering a powerful 37kW (50HP) of continuous power in the 400V class, this drive is a compact powerhouse designed for the most demanding heavy-duty industrial applications. It is specifically suited for high-torque tasks such as industrial extruders, large-scale conveyors, and high-speed centrifuges where absolute control over speed and torque is non-negotiable.
High Power Density and Precision Actuation
The SP4402 is engineered for maximum industrial throughput, providing a continuous output current of 83A. Its Solutions Platform architecture allows for localized PLC-like logic directly within the drive when equipped with an SM-Applications module, reducing the processing load on the central machine controller. The drive’s internal PID loops and high-speed analog I/O enable precise closed-loop control of pressure, flow, or tension without the need for expensive external hardware controllers.
Key Technical Characteristics
- Part Number: SP4402.
- Frame Size: 4.
- Rated Power: 37.0 kW / 50 HP.
- Output Current: 83.0 Amperes (Continuous).
- Voltage: 3-Phase 380V to 480V.
- Control Logic: Universal (Induction/Servo/RFC).
- Mounting: Surface or through-panel mounting.
- Encoder Support: Universal port (SinCos, SSI, EnDat).
- Safety: Safe Torque Off (STO) SIL3/PLe compliant.
System Versatility and Durability
Reliability is part of the SP4402’s DNA. It utilizes high-grade power semiconductors and advanced cooling logic to maintain performance in 24/7 manufacturing environments. The drive features a high-contrast display for local monitoring and an intuitive digital dial for navigation. Its ability to handle high overload (up to 175% in RFC mode) ensures that the drive can manage the breakaway torque required by heavy industrial machinery without nuisance tripping.
| Feature | Value |
| Mass | Approx. 30.0 kg |
| Switching Frequency | Adjustable up to 16 kHz |
| Ambient Temp | 0 to 40°C (Standard) |
Technical Note
For high-power applications, the SP4402 should be through-panel mounted to move the majority of the heat dissipation outside the control cabinet. Ensure all power cables are properly shielded and grounded to maintain the high signal integrity required by the universal encoder feedback port.
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