Product Overview: Nidec Control Techniques SP6401
The SP6401 is a high-capacity, universal AC variable speed drive from the Unidrive SP series by Nidec Control Techniques. As a Frame 6 model designed for 400V industrial networks, it provides a powerful rated output of 75kW (100HP) for Heavy Duty applications and up to 90kW for Normal Duty. The Unidrive SP platform is the global benchmark for «Universal» motor control, allowing a single drive to operate induction motors, permanent magnet servo motors, and regenerative power systems with unmatched precision.
Extreme Power Density and Universal Control
The core of the SP6401 is its advanced control processor, which supports multiple operating modes: Open Loop, Closed Loop Vector, Rotor Flux Control (RFC), and high-dynamic Servo mode. This versatility allows heavy industries to standardize on a single drive architecture for massive conveyors, extruders, and industrial fans. The SP6401 features three internal slots for SM-Option Modules, facilitating easy integration into complex fieldbus networks (ProfiNet, EtherCAT, Ethernet/IP) or the addition of localized PLC functionality via the SM-Applications module.
Key Technical Characteristics
- Part Number: SP6401.
- Frame Size: 6.
- Rated Capacity (Heavy Duty): 75 kW / 100 HP.
- Rated Capacity (Normal Duty): 90 kW / 125 HP.
- Output Current: 125 Amperes (Heavy Duty Continuous).
- Input Voltage: 3-Phase 380V to 480V AC.
- Expansion Slots: 3x SM-Option slots for I/O and Comms.
- Safety: Integrated Safe Torque Off (STO) compliant with SIL3/PLe.
Industrial Durability and Maintenance
Built for 24/7 heavy industrial duty, the SP6401 features a robust thermal management system with high-capacity cooling fans. The integrated Smartcard allows for rapid parameter cloning and data backup, ensuring that even a 75kW drive can be swapped and recommissioned in minutes. Its high-resolution universal encoder port supports 14 different feedback types, ensuring precise torque control even at zero speed, which is critical for heavy hoisting and tensioning applications.
| Feature | Detail |
| Overload Capacity | 150% for 60s (Heavy Duty) |
| Mass | Approx. 75 kg |
| Braking | Integrated brake transistor (External resistor required) |
Frequently Asked Questions
What is the difference between Heavy Duty and Normal Duty? Heavy Duty (75kW) allows for higher overload (150%), while Normal Duty (90kW) is suited for low-inertia loads like fans or pumps with 110% overload. Does it support Modbus? Yes, Modbus RTU is standard via the RS485 port.
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