Yaskawa AC Drive Z1000 User Manual
Page 166
0: Disabled
1: Square Root
n
b5-29: PI Square Root Gain
A multiplier applied to the square root of the feedback. If the PI Function is regulating the flow of a closed loop system by
using a pressure feedback, it may be convenient to view the square root of the PI output using monitor U1-37.
No.
Parameter Name
Setting Range
Default
b5-29
PI Square Root Gain
0.00 to 2.00
0.00
n
b5-30: PI Feedback Offset
Sets PI feedback Offset as a percentage of maximum frequency.
No.
Parameter Name
Setting Range
Default
b5-30
PI Feedback Offset
0.00 to 100.00%
0.00%
n
b5-34: PI Output Lower Limit
Sets the minimum possible PI controller output as a percentage of the maximum output frequency (E1-04). The lower limit is
disabled when set to 0.00%
No.
Name
Setting Range
Default
b5-34
PI Output Lower Limit
-100.0 to 100.0%
0.0%
n
b5-35: PI Input Limit
Sets the maximum allowed PI input as a percentage of the maximum output frequency (E1-04). Parameter b5-35 acts as a
bipolar limit.
No.
Name
Setting Range
Default
b5-35
PI Input Limit
0 to 1000.0%
1000.0%
n
b5-36: PI Feedback High Detection Level
Sets the feedback level used for PI feedback high detection. The PI feedback must exceed this level for longer than the time
set to b5-37 before feedback loss is detected.
No.
Name
Setting Range
Default
b5-36
PI Feedback High Detection Level
0 to 100%
100%
n
b5-37: PI Feedback High Detection Time
Sets the time that the PI feedback must exceed the value set to b5-36 before feedback loss is detected.
No.
Name
Setting Range
Default
b5-37
PI Feedback High Detection Time
0.0 to 25.5 s
1.0 s
n
b5-38, b5-39: PI Setpoint User Display, PI Setpoint Display Digits
When parameter b5-20 is set to 3, parameters b5-38 and b5-39 set a user-defined display for the PI setpoint (b5-19) and PI
feedback monitors (U5-01, U5-04).
Parameter b5-38 determines the display value when the maximum frequency is output and parameter b5-39 determines the
number of digits. The setting value is equal to the number of decimal places.
No.
Name
Setting Range
Default
b5-38
PI Setpoint User Display
1 to 60000
Determined by
b5-20
b5-39
PI Setpoint Display Digits
0 to 3
Determined by
b5-20
n
b5-40: Frequency Reference Monitor Content During PI
Sets the content of the frequency reference monitor display (U1-01) when PI control is active.
4.13 Advanced Drive Setup Adjustments
166
YASKAWA ELECTRIC TOEP C710616 45E YASKAWA AC Drive – Z1000 User Manual