Product Analysis: Nidec Control Techniques SP3402
The SP3402 is a high-power Frame 3 AC drive within the Unidrive SP Solutions Platform. Delivering a powerful 18.5kW (25HP) of continuous power in the 400V class, this drive is a compact powerhouse designed for heavy-duty industrial actuation. It is specifically suited for high-torque applications such as large conveyors, cranes, and high-speed centrifuges. The SP3402 provides the intelligence of a PLC within the drive itself through the optional SM-Applications module, enabling decentralized control of complex machinery.
Intelligent High-Power Control
The SP3402 is engineered for maximum industrial throughput. It provides a continuous output current of 43A, allowing it to drive large induction and servo motors with ease. Its Solutions Platform architecture allows for localized logic directly within the drive, 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 additional external hardware.
Key Technical Characteristics
- Part Number: SP3402.
- Rated Power: 18.5 kW / 25 HP.
- Output Current: 43 Amperes (Continuous).
- Voltage: 3-Phase 380V to 480V.
- Mounting: Surface mount or through-panel mounting.
- Encoder Support: Standard universal port (SinCos, SSI, EnDat).
- Expansion: 3 Solutions Module slots.
- Safety: Safe Torque Off (STO) SIL3/PLe.
System Versatility and Durability
Reliability is part of the SP3402’s core design. 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. 15.0 kg |
| Operating Temp | 0 to 40°C (Standard) |
| Braking | Integrated internal brake transistor |
Technical Note
For high-power applications, the SP3402 can be through-panel mounted to move the majority of the heat dissipation outside the control cabinet. This is highly recommended in environments with sensitive electronics nearby. 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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