VFD-F (CURVE).cdr

VFD-F Series When this parameter is set to 01: when positive control, the deviation equation is deviation= detection signal – target value. When increasing output frequency will decrease detectionvalue, this setting should be chose.10 - 03 Proportional Gain (P) Factory Setting: 1.0Settings 0.0~10.0 Unit: 0.1 This parameter is to set proportional gain (P). This gain determines the response degree ofP controller to feedback deviation. If gain value is large, the response is fast. But if the gainvalue is too great, oscillation will occur. If gain value is small, the response is slow.10 - 04 Integral Time (I) Factory Setting: 1.00Settings 0.00~100.00 Sec Unit: 0.01 This parameter is set to integral gain of I controller. When much integral time is to be set,the gain of I controller is small and the response is slow. The control ability to external ispoor. When less integral time is to be set, the gain of I controller is large and the response isfast. The control ability to external is fast.5 If the setting of integral time is too small, output frequency and system may occuroscillation. If integral time is set to 0.00, I controller is closed.10 - 05 Differential Time (D) Factory Setting: 0.00Settings 0.00~1.00 Sec Unit: 0.01 This parameter is set to D controller gain. This gain determines D controller to the responseof change of deviation. Suitable differential time could decrease overshoot of P and Icontroller. The oscillation will be attenuation and steady quickly. But if much differential timeis to be set, it may cause system oscillation. Interference immunity ability is poor due to differential controller activates to change ofdeviation. It’s not recommended to use, especially during interferences.10 - 06 Upper Bound for Integral Control Factory Setting: 100Settings 00~200% Unit: 1 This parameter could set the upper bound of I controller. In other words, upper bound forintegral control = (01-00) X (10-04) %10 - 07 Primary Low Pass Filter Time Factory Setting: 0.0Settings 0.0~2.5 Sec Unit: 0.1DELTA ELECTRONICS, INC. ALL RIGHTS RESERVED 5-61