Yaskawa AC Drive Z1000 User Manual
Page 165
Setting 0: PI Setpoint
Setting 1: SFS Input
Setting 2: Snooze
n
b5-22: PI Snooze Level
Sets the PI Snooze function start level as a percentage of maximum frequency.
No.
Parameter Name
Setting Range
Default
b5-22
PI Snooze Level
0 to 100%
0%
n
b5-23: PI Snooze Delay Time
Sets the PI Snooze function delay time in seconds.
No.
Parameter Name
Setting Range
Default
b5-23
PI Snooze Delay Time
0 to 2600 s
0 s
n
b5-24: PI Snooze Deactivation Level
When the PI feedback drops below this level, normal operation starts again. Sets as a percentage of maximum frequency.
No.
Parameter Name
Setting Range
Default
b5-24
PI Snooze Deactivation Level
0 to 100%
0%
n
b5-25: PI Setpoint Boost Setting
Temporary increase of PI setpoint to create an overshoot of the intended PI setpoint.
No.
Parameter Name
Setting Range
Default
b5-25
PI Setpoint Boost Setting
0 to 100%
0%
n
b5-26: PI Maximum Boost Time
Associated with the Snooze Function. In cases where the temporary PI Setpoint (intended PI setpoint + PI Setpoint Boost)
cannot be reached within the PI Maximum Boost Time (b5-26), the Setpoint Boost is interrupted and the Drive output is turned
off.
No.
Parameter Name
Setting Range
Default
b5-26
PI Maximum Boost Time
0 to 2600 s
0 s
n
b5-27: PI Snooze Feedback Level
The second method of initiating the Snooze Function. The drive output shuts off when the PI feedback level exceeds the PI
Snooze Feedback Level (b5-27).
Normal drive and PI operation return after the PI feedback drops below the PI Snooze Deactivation Level (b5-24). Snooze
activates when both b5-22 and b5-27 conditions are met. There is no time delay for deactivation.
Sets as a percentage of maximum frequency.
No.
Parameter Name
Setting Range
Default
b5-27
PI Snooze Feedback Level
0 to 100%
60%
n
b5-28: PI Feedback Function Selection
When b5-28 is set to 1, the square root of the PI feedback is compared to the PI Setpoint to determine appropriate drive output
to properly regulate the system.
This is helpful in cases where the measured feedback is pressure, but the PI loop needs to regulate flow.
No.
Parameter Name
Setting Range
Default
b5-28
PI Feedback Function Selection
0, 1
0
4.13 Advanced Drive Setup Adjustments
YASKAWA ELECTRIC TOEP C710616 45E YASKAWA AC Drive – Z1000 User Manual
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4
Start-Up Programming & Operation