Fig.6-2 Schematic diagram of PI parameter
The speed dynamic response characteristics of the vector control can be adjusted by setting
the proportional coefficient and integration time of the speed regulator. Increasing the
proportional gain or reducing the integration time can accelerate the dynamic response of the
speed loop. However, if the proportional gain is too large or the integration time is too short, it
will cause the oscillation of the system.
Recommended adjustment method:
If the factory default parameters cannot meet the requirements, the relevant parameter values
can be subject to îš¿ne tuning.
Increase the proportional gain while ensuring no oscillation to the system, and then reduce
the integration time to ensure that the system has quick response characteristics and small
overshoot.
Caution: Improper PI parameter setting may cause too large speed overshoot. Voltage fault
may occur when the overshoot drops.
F2-06
Slip compensation
coefîš¿cient
Factory default value 100%
Setup range 50%~200%
F2-07
Time constant of speed loop
îš¿lter
Factory default value 0.000s
Setup range 0.000s~0.100s
For the speed sensorless vector control, this parameter is used to adjust the speed stabilizing
precision of the motor. When the speed is too low due to heavy load of motor, this parameter
needs to be enlarged or this parameters needs to be reduced.
For the speed sensor vector control, this parameter can adjust the output current of the inverter
carrying the same load.
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