Reduce the starting current of the motor, reduce the di-stribution capacity, and avoid investment in capacity ex-pansion;
Reduce starting stress and extend the service life of motors and related equipment;
Smooth start and soft stop avoid the surge problem and water hammer effect of traditional starting equipment;
A variety of starting modes and a wide range of current and voltage settings, can adapt to a variety of load occ-asions, improve the process;
Improve the reliable protection function, more effective-ly protect the safety of the motor and related equipment;
Can be used for frequent start and stop The occasion.
In the trend of advocating smart and simple industrial automation, environmentally friendly products, value-added solutions, K-Drive, as one of the world's leading drive manufacturers aggressively investing in R&D, production, and continuous quality improvement, is well positioned to provide its customers with technology-driven, performance-outstanding products such as VFDs, wind power converters, servo drives, HEV/EV drives, helping its customers save energy and increase industrial productivity with sustainability on the one hand, and enhancing their entire value-chain quality, delivery, and services on the other hand.
In production, rigorous quality control is implemented on components, circuit boards, and the finished goods, assuring products without defects.
| Performance | Common brands | K-Drive |
|---|---|---|
| Applicable motors | Asynchronous motors | Asynchronous /synchronous motors |
| Starting torque | 2.0Hz, 150% (sensor-less vector control) 0Hz, 180% (closed-loop vector control) | 0.5Hz, 180% (sensor-less vector control) 0Hz, 200% (closed-loop vector control) |
| Speed adjustable range | 1:100 (SVC), 1:1000 (VC) | 1:200 (SVC), 1:1000 (VC) |
| Ambient temperature (no derating required) | -10-40ºC | -10-50ºC (for most of the models) |
| Rated input voltage | 208VAC-400VAC | 208VAC-480VAC |
| Communication | Modbus RTU//ASCII | Modbus RTU//ASCII Profibus-DP, CANopen, etc. |
| Position control (fixed length, or angular positioning) | × | √ |
| Field weakening control | × | √ |
| Autotune online | Online | Online & Offline |
| Short-time ramp-up | Trip | No trip |
| Customized features (software and/or hardware) | Unprocurable or no experience | Procurable with rich experience |
Soft start and inverter are two different concepts related to the control of electric motors.
A soft start is a device used to control the starting current of a motor. When a motor starts, it can draw a very high current, which can damage the motor and the electrical system. A soft start device gradually increases the voltage to the motor, reducing the inrush current and allowing the motor to start smoothly. Soft start is typically used for AC induction motors and is often integrated into the motor starter or motor control center.
On the other hand, an inverter is a device that can control the speed and torque of an AC motor by varying the frequency and voltage of the power supplied to it. An inverter converts the incoming AC voltage into DC voltage, which is then used to generate a new AC waveform with a variable frequency and voltage. This allows the motor to operate at different speeds and with different torques, making it suitable for a wide range of applications. Inverters are often used in HVAC systems, conveyor systems, and other industrial applications.
In summary, while both soft start and inverter are related to the control of electric motors, a soft start is primarily used to control the starting current of a motor, while an inverter is used to control the speed and torque of a motor by varying the frequency and voltage of the power supplied to it.
