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 |
Assessing the quality of an AC soft starter involves several factors. Here are some of the key aspects to consider:
Voltage rating: AC soft starters are available in different voltage ratings. It is important to select a soft starter that matches the voltage rating of the motor it is intended to control.
Current rating: The soft starter's current rating should be sufficient to handle the starting current of the motor it is intended to control. A soft starter with a lower current rating than the motor's starting current can result in failure or reduced performance.
Starting performance: The soft starter should provide smooth and controlled starting of the motor, without causing excessive voltage drops or current surges.
Protection features: The soft starter should have built-in protection features to safeguard the motor against overcurrent, undercurrent, overvoltage, undervoltage, and other faults.
Reliability: The soft starter should be reliable and durable, with a long lifespan.
Ease of installation and operation: The soft starter should be easy to install and operate, with clear instructions and user-friendly controls.
Brand reputation and customer support: It is important to choose a soft starter from a reputable brand with good customer support, in case any issues arise.
To assess the quality of an AC soft starter, you can research and compare different brands and models based on these factors, read reviews from other users, and consult with industry experts. You can also consider testing the soft starter in a real-world application or consulting with a qualified electrician or engineer.
