YASKAWA GA700 Technical Manual page 624

11.3 b: Application
Note:
Use settings 5 to 8 instead of settings 1 to 4 if retrofitting the drive with a Varispeed series drive, or a similar product from a previous
product line.
■
b5-02: Proportional Gain Setting (P)
No.
Name
(Hex.)
b5-02 Proportional Gain
Setting (P)
(01A6)
RUN
Larger values will tend to reduce the error but may cause oscillations if set too high. Lower values may allow too
much offset between the setpoint and feedback.
Set b5-02 = 0.00 to disable P control.
■
b5-03: Integral Time Setting (I)
No.
Name
(Hex.)
b5-03 Integral Time Setting
(I)
(01A7)
RUN
The shorter the integral time set to b5-03, the faster the offset will be eliminated. If the integral time is set too
short, however, overshoot or oscillation may occur.
Set b5-03 = 0.00 to disable I control.
■
b5-04: Integral Limit Setting
No.
Name
(Hex.)
b5-04 Integral Limit Setting
(01A8)
RUN
On some applications, especially those with rapidly varying loads, the output of the PID function may show a fair
amount of oscillation. Set a low value to suppress oscillation as well as prevent mechanical loss and motor speed
loss.
■
b5-05: Derivative Time (D)
No.
Name
(Hex.)
b5-05 Derivative Time (D)
(01A9)
RUN
Longer time settings improve the response but can cause vibrations. Shorter time settings reduce the overshoot but
reduce controller responsiveness.
Set b5-05 = 0.00 to disable D control.
624
V/f CL-V/f OLV CLV AOLV
Sets the proportional gain (P) applied to PID input.
V/f CL-V/f OLV CLV AOLV
Sets the integral time (I) in seconds that is applied to PID input.
Figure 11.39 Integral Time and Deviation
V/f CL-V/f OLV CLV AOLV
Sets the upper limit for I control as a percentage of E1-04 [Maximum
Output Frequency].
V/f CL-V/f OLV CLV AOLV
Sets the derivative time (D) for PID control. This parameter adjusts system
responsiveness.
YASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Default
(Range)
1.00
(0.00 - 25.00)
Default
(Range)
1.0 s
(0.0 - 360.0 s)
Default
(Range)
100.0%
(0.0 - 100.0%)
Default
(Range)
0.00 s
(0.00 - 10.00 s)