Delta Electronics VFD-DD Series - Page 87

Chapter 4 Parameter Settings|DD Series
4-63

Zero Speed/ASR1 Width Adjustment
Control mode VFPG FOCPG FOCPM
Factory setting: 2.00
Settings 0.00~120.00Hz

ASR1/ASR2 Width Adjustment
Control mode VFPG FOCPG FOCPM
Factory setting: 5.00
Settings 0.00~120.00Hz
 These parameters set the slope width from zero speed to low speed and from Pr.07-06 to high speed.
07.06
07.02
07.03
07.04
07.05
Hz
PI
07.00
07.01
0H
z
07.08
07.09
Mechanical Gear Ratio
Control mode FOCPG FOCPM
Factory setting: 1
Settings 1~100
Inertia Ratio
Control mode FOCPG FOCPM
Factory setting: 100
Settings 1~300%
 This parameter can be used to adjust inertia ratio of load.
Zero-speed Bandwidth
Control mode FOCPG FOCPM
Factory setting: 20
Settings 0~40Hz
Low-speed Bandwidth
Control mode FOCPG FOCPM
Factory setting: 20
Settings 0~40Hz
High-speed Bandwidth
Control mode FOCPG FOCPM
Factory setting: 20
Settings 0~40Hz
 After estimating inertia, user can adjust parameters Pr.07-12, 07-13, and 07-14 separately by speed
response. The larger value of the setting, the faster response you will get. Pr.07-06 is switches the
frequency of low-speed/high-speed bandwidth.
PDFF Gain Value
Control mode
FOCPG FOCPM
Factory setting: 0
Settings 0~200%
 Pr. 07-15, 07-16 is used to reduce overshoot situation. Please adjust PDFF gain value by actual
situation.
.
 Besides traditional PI control, it also provides PDFF function to reduce overshoot for speed control.