4-223
ASR integral limit (20-04)
Setting a small value may prevent system response when the load suddenly changes.
ASR main delay time (20-08).
(1) Does not require to be adjusted for general purpose applications.
(2) When the set value of 20-08 is set high, the speed response will be reduced, but the system is
more stable.
20- 34 Compensation Gain of Derating
Range 【0 ~25600】
20- 35 Compensation Time of Derating
Range 【0~30000】mSec
Refer to Fig.4.3.108 and Fig. 4.3.109. Torque compensation function of derating can reduce the
characteristics of ASR turning around under shock load.
This gain effect is the same as ASR proportional gain (20-00, 20-02). And if this parameter is
coupled with low-pass filter time constant (20-35), it can avoid oscillation.
This time constant is used for suppressing the oscillation produced by 20-34. But too large
compensation time constant will cause slower output response and then is unfavorable for
turned compensation.
It is suggested that the setting value of parameter 20-34 is 30~50ms and 20-35 is 50~100ms.
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