K&R GT600-4T132G User Manual page 154

6. Description of Parameters
6.5.5 Speed Loop
Function Code
F2-00
F2-01
F2-02
F2-03
F2-04
F2-05
F2-00 to F2-05 are speed loop PI parameters.
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Figure 6-43 Speed loop PI parameters
6
To improve the system response, increase the proportional gain or reduce the integral time.
Remember to increase proportional gain first to ensure that the system does not oscillate, and
then reduce integral time to ensure that the system has quick response and small overshoot.
6.5.6 SVC/FVC Slip Compensation Gain
Function Code
F2-06
This function improves control performance in SVC/FVC (F0-01 = 0/1).
For FVC (F0-01 = 1), it can adjust output current of the AC drive. Decrease this parameter
gradually when a large rating AC drive is controlling a lightly loaded motor. Adjustment of this
parameter is not required normally.
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Parameter Name
Speed loop proportional gain 1
Speed loop integral time 1
Switchover frequency 1
Speed loop proportional gain 2
Speed loop integral time 2
Switchover frequency 2
If running frequency ≤ F2-02 (Switchover frequency 1), PI parameters are F2-00 and F2-01.
If running frequency ≥ F2-05 (Switchover frequency 2), PI parameters are F2-03 and F2-04.
If running frequency is between F2-02 and F2-05, PI parameters are obtained from linear
switchover between two groups of PI parameters, as shown in Figure 9-2.
PI parameters
F2-00
F2-01
F2-03
F2-04
Incorrect PI setting may cause large speed overshoots and a fast falling speed drop
Note
may cause an overvoltage on the DC bus.
Parameter Name
SVC/FVC slip compensation gain
Setting Range
0 to 100
0.01 to 10.00s
0.00 to F2-05
0 to 100
0.01 to 10.00s
F2-02 to max. frequency
F2-02 F2-05
Setting Range
50% to 200%
Default
30
0.50s
5.00 Hz
20
1.00s
10.00 Hz
Frequency reference
Default
100%