The control methods are the core of the entire converter firmware. They are responsible for optimum movement of the connected motor and the attached machines. The better the control functions, the faster, better and more smoothly the machine operates, thereby significantly enhancing the quality of the production output.
Open-Loop Control
The V/f open-loop control characteristic is the simplest way to control an induction motor. Several different characteristics, e.g. linear or parabolic, can be configured. In addition, basic functions like slip compensation, voltage boost or resonance damping are supported.
Universal closed-loop control (VECTOR)
The Vector control emulates the motor as precisely as possible to obtain the best results regarding control precision and control quality. For most applications and motors, the closed-loop Vector control is the perfect choice. It is optimized for both Siemens and 3rd party motors. Unknown motors - regardless of the technology (induction, synchronous reluctance, permanent magnet synchronous) - can be identified and commissioned easily.
Closed-loop control for highest dynamics (SERVO)
In the Servo control mode, the connected motor is emulated in a vector model based on its equivalent circuit diagram data. Consequently, the servo control constitutes a field-oriented control. In contrast to vector control, the vector model is optimized according to other criteria in servo control. In favor of achieving a high dynamic performance, a small deterioration in the control accuracy and control quality is accepted.
