User Manual of EM730/EM730E Series Inverter In the vector control mode, the dynamic speed response of the inverter is adjusted by changing the speed proportional gain (ASR_P) and speed integral time (ASR_T) of the speed PI regulator. The increase in ASR_P or decrease in ASR_T may accelerate the dynamic response of the speed loop. If ASR_P is too large or ASR_T is too small, however, the system may be over-tuned to cause oscillation. Users should adjust the above speed PI parameters according to the actual load characteristics.
Generally, as long as the system does not oscillate, ASR_P should be increased as much as possible, and then ASR_T should be adjusted, so that the system makes response fast, without excessive over-tuning. To enable fast dynamic responses of the system at low and high speeds, PI regulation should be performed separately at low and high speeds. During the actual operation, the speed regulator will automatically calculate the current PI parameters based on the current frequency. The speed PI parameters are P1 and T1 at the switching frequency 1, and P2 and T2 at the switching frequency 2.
If the frequency is greater than the F06.04 switching frequency 1 and less than F06.05 switching frequency 2, the switching frequency 1 and switching frequency 2 will be subject to linear transition. See Fig. 7-. 192 ASR P1 _ F06.01 Speed integral time constant ASR T1 _ 0.000 - 30.000, 0.000: no integral s 0.200 ● F06.02 Speed proportional gain ASR P2 _ 0.00-100.00 8.00 ● F06.03 Speed integral time constant ASR T2 _ 0.000 - 30.000, 0.000: no integral s 0.300 ● F06.04 Switching frequency 1 0.00 to switching frequency 2 Hz 5.00 ● F06.05 Switching frequency 2 Switching frequency 1 to maximum frequency F00.16 Hz 10.00 ●