No.
Name
Setting Range
Default
b5-04
Integral Limit Setting
0.0 to 100.0%
100.0%
Note:
On some applications, especially those with rapidly varying loads, the output of the PI function may show a fair amount of oscillation.
Program b5-04 to apply a limit to the integral output and suppress this oscillation.
n
b5-06: PI Output Limit
Sets the maximum output possible from the entire PI controller as a percentage of the maximum frequency (E1-04).
No.
Name
Setting Range
Default
b5-06
PI Output Limit
0.0 to 100.0%
100.0%
n
b5-07: PI Offset Adjustment
Sets the offset added to the PI controller output as a percentage of the maximum frequency (E1-04).
No.
Name
Setting Range
Default
b5-07
PI Offset Adjustment
-100.0 to 100.0%
0.0%
n
b5-08: PI Primary Delay Time Constant
Sets the time constant for the filter applied to the output of the PI controller. Normally, change is not required.
No.
Name
Setting Range
Default
b5-08
PI Primary Delay Time Constant
0.00 to 10.00 s
0.00 s
Note:
Useful 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 may reduce the responsiveness of the drive.
n
b5-09: PI Output Level Selection
Reverses the sign of the PI controller output signal. Normally a positive PI input (feedback smaller than setpoint) leads to
positive PI output.
No.
Parameter Name
Setting Range
Default
b5-09
PI Output Level Selection
0, 1
0
Setting 0: Normal Output
A positive PI input causes an increase in the PI output (direct acting).
Setting 1: Reverse Output
A positive PI input causes a decrease in the PI output (reverse acting).
n
b5-10: PI Output Gain Setting
Applies a gain to the PI output and can be helpful when the PI function is used to trim the frequency reference (b5-01 = 3 or
4).
No.
Name
Setting Range
Default
b5-10
PI Output Gain Setting
0.00 to 25.00
1.00
n
b5-11: PI Output Reverse Selection
Determines whether a negative PI output reverses the direction of drive operation. This parameter has no effect when the PI
function trims the frequency reference (b5-01 = 3) and the PI output will not be limited (same as b5-11 = 1).
No.
Parameter Name
Setting Range
Default
b5-11
PI Output Reverse Selection
0, 1
0
Setting 0: Reverse Disabled
Negative PI output will be limited to 0 and the drive output will be stopped.
4.13 Advanced Drive Setup Adjustments
YASKAWA ELECTRIC TOEP C710616 45F YASKAWA AC Drive – Z1000 User Manual
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4
Start-Up Programming & Operation
Summary of Contents for Z1000 CIMR-ZU*A Series
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