7.5kw 11kw 15kw VFD 3 Phase 380V Variable Frequency Inverter AC Motor Drive
| 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 |
1. How do you choose the right frequency inverter for your application?
When choosing a frequency inverter, factors to consider include the motor type and power rating, the application requirements for speed control and torque, the operating environment, and the desired level of functionality and communication options.
2. What is the difference between a frequency inverter and a soft starter?
A soft starter is a device that reduces the initial voltage supplied to a motor to limit the inrush current, while a frequency inverter provides variable speed control by adjusting the frequency of the power supplied to the motor.
3. How do you choose the right frequency inverter for your application?
When choosing a frequency inverter, factors to consider include the motor type and power rating, the application requirements for speed control and torque, the operating environment, and the desired level of functionality and communication options.
