VLT2882PT4B20STR0DBF00A00C1 summary：
A frequency converter rectifies AC voltage from mains into DC voltage, after which this DC voltage is converted into a AC current with a variable amplitude and frequency.
The motor is supplied with variable voltage/current and frequency, which enables variable speed control of 3-phased, standard asynchronous motors and permanent magnet motors.
The frequency converter is capable of controlling either the speed or the torque on the motor shaft. Setting 1-00 Configuration Mode determines the type of control.
Speed control
There are 2 types of speed control:
• Speed open loop control which does not require any feedback from motor (sensorless).
• Speed closed loop PID control requires a speed feedback to an input. A properly optimised speed closed loop control has higher accuracy than a speed open loop control.
Selects which input to use as speed PID feedback in 7-00 Speed PID Feedback Source.
