Setting functions
8.5 Motor control
Converter with control units CU250D-2
140 Operating Instructions, 04/2014, FW V4.7, A5E34261542B AA
Vector control
Sensorless vector control
Using a motor model, the vector control calculates the load and the motor slip. As a result of
this calculation, the converter controls its output voltage and frequency so that the motor
speed follows the setpoint, independent of the motor load.
Vector control is possible without directly measuring the motor speed and is therefore also
called "sensorless vector control".
Figure 8-15 Simplified function diagram of sensorless vector control
You can find additional information on the vector control in the List Manual in function
diagrams 6020 ff.
Vector control with encoder
Instead of the calculated speed from the motor model, the vector control with encoder
evaluates an encoder.
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