Delta Electronics AC Drive VFD-F Series Dokumentacja Pobierz pdf (Strona 103)

VFD-F Series

5-70

 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 detection value, this

setting should be chose.

10 - 03

Proportional Gain (P)

Factory Setting: 1.0

Settings 0.0~10.0 Unit: 0.1

 This parameter is to set proportional gain (P). This gain determines the response degree of P

controller to feedback deviation. If gain value is large, the response is fast. But if the gain value is too

great, oscillation will occur. If gain value is small, the response is slow.

10 - 04

Integral Time (I)

Factory Setting: 1.00

Settings 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 is poor. When less

integral time is to be set, the gain of I controller is large and the response is fast. The control ability to

external is fast.

 If the setting of integral time is too small, output frequency and system may occur oscillation.

 If integral time is set to 0.00, I controller is closed.

10 - 05

Differential Time (D)

Factory Setting: 0.00

Settings 0.00~1.00 Sec Unit: 0.01

 This parameter is set to D controller gain. This gain determines D controller to the response of

change of deviation. Suitable differential time could decrease overshoot of P and I controller. The

oscillation will be attenuation and steady quickly. But if much differential time is to be set, it may

cause system oscillation.

 Interference immunity ability is poor due to differential controller activates to change of deviation.

It’s not recommended to use, especially during interferences.

10 - 06

Upper Bound for Integral Control

Factory Setting: 100

Settings 00~200% Unit: 1

 This parameter could set the upper bound of I controller. In other words, upper bound for integral

control = (01-00) X (10-04) %

10 - 07

Primary Low Pass Filter Time

Factory Setting: 0.0

1 2 ... 98 99 100 101 102 103 104 105 106 107 108 ... 189 190

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Delta Electronics AC Drive VFD-F Series Dokumentacja Strona 103