YASKAWA iQpump Micro CIMR-PW Series User Manual page 134

5.2 b: Application
b5-04: Integral Limit Setting
n
Sets the maximum output possible from the integral block. Set as a percentage of the maximum frequency (E1-04).
No.
b5-04
Note: On some applications, especially those with rapidly varying loads, the output of the PID function may show a fair amount of oscillation.
To suppress this oscillation, a limit can be applied to the integral output by programming b5-04.
b5-05: Derivative Time (D)
n
Sets the time the drive predicts the PID input/PID feedback signal based on the derivative of the PID input/PID feedback.
Longer time settings will improve the response but can cause vibrations. Shorter settings will reduce the overshoot but also
reduce the controller responsiveness. D control is disabled by setting b5-05 to zero seconds.
No.
b5-05
b5-06: PID Output Limit
n
Sets the maximum output possible from the entire PID controller. Set as a percentage of the maximum frequency (E1-04).
No.
b5-06
b5-07: PID Offset Adjustment
n
Sets the offset added to the PID controller output. Set as a percentage of the maximum frequency.
No.
b5-07
b5-08: PID Primary Delay Time Constant
n
Sets the time constant for the filter applied to the output of the PID controller. Normally, change is not required.
No.
b5-08
Note: Effective in preventing oscillation when there is a fair amount of oscillation or when rigidity is low. Set to a value larger than the cycle of
the resonant frequency. Increasing this time constant reduces the responsiveness of the drive.
b5-09: PID Output Level Selection
n
Normally, the output of the PID function increase whenever the PID input is negative (feedback below setpoint). Using b5-09
the PID controller can be set up for applications that require opposite operation.
No.
b5-09
Setting 0: Normal Output
A negative PID input causes an increase in the PID output (direct acting).
Setting 1: Reverse Output
A negative PID input causes a decrease in the PID output (reverse acting).
b5-10: PID Output Gain Setting
n
Applies a gain to the PID output and can be helpful when the PID function is used to trim the frequency reference (b5-01 = 3
or 4). Increasing b5-10 causes the PID function to have a greater regulating effect on the frequency reference.
No.
b5-10
b5-11: PID Output Reverse Selection
n
Determines whether a negative PID output reverses the drive operation direction or not. When the PID function is used to trim
the frequency reference (b5-01 = 3 or 4), this parameter has no effect and the PID output will not be limited (same as
134
Name
Integral Limit Setting
Name
Derivative Time
Name
PID Output Limit
Name
PID Offset Adjustment
Name
PID Primary Delay Time Constant
Parameter Name
PID Output Level Selection
Name
PID Output Gain Setting
Setting Range
0.0 to 100.0
Setting Range
0.00 to 10.00 s
Setting Range
0.0 to 100.0%
Setting Range
-100.0 to 100.0%
Setting Range
0.00 to 10.00 s
Setting Range
Setting Range
0.00 to 25.00
YASKAWA TOEP YAIQPM 03B YASKAWA AC Drive - iQpump Micro User Manual
Default
100.0
Default
0.00 s
Default
100.0%
Default
0.0%
Default
0.00 s
Default
0 or 1
Default
1.00
0