Inovance MD500T75G - Page 156

7. Description of Parameters MD500 User Manual
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7.5.5 Speed Loop
Function Code Parameter Name Setting Range Default
F2-00 Speed loop proportional gain 1 0 to 100 30
F2-01 Speed loop integral time 1 0.01 to 10.00s 0.50s
F2-02 Switchover frequency 1 0.00 to F2-05 5.00 Hz
F2-03 Speed loop proportional gain 2 0 to 100 20
F2-04 Speed loop integral time 2 0.01 to 10.00s 1.00s
F2-05 Switchover frequency 2 F2-02 to max. frequency 10.00 Hz
F2-00 to F2-05 are speed loop PI parameters.
ƕ If the running frequency is less than or equal to F2-02 (Switchover frequency 1), the PI parameters are F2-00 and F2-01.
ƕ If the running frequency is equal to or greater than F2-05 (Switchover frequency 2), PI parameters are F2-03 and F2-04.
ƕ If the running frequency is between F2-02 and F2-05, the PI parameters are obtained from linear switchover between the two
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Figure 7-45 Speed loop PI parameters
Frequency
reference
PI parameters
F2-00
F2-01
F2-03
F2-04
F2-02 F2-05
You can improve the system response by either increasing the proportional gain or reducing the integral time. Be aware that this
may lead to system oscillation.
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time to ensure that the system has quick response and small overshoot.
Note
Improper PI setting may cause too large speed overshoot and even overvoltage during overshoot drop.
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