YASKAWA CIMR-ZU A Series Programming Manual page 44

1 2 b Application
Settin Feedbac Loss Fault
If the PI feedback value falls below the level set to b5-13 for longer than the time set to b5-14, a "FbL - Feedback Low" fault
will be displayed. If the PI feedback value exceeds the level set to b5-36 for longer than the time set to b5-37, a "FbH - Feedback
High" fault will be displayed. Both events trigger a fault output (H1-
is disabled when PI is disabled by digital input (H1-
b 1 PI Feedbac Lo
Sets the feedback level used for PI feedback low detection. The PI feedback must fall below this level for longer than the time
set to b5-14 before feedback loss is detected.
No
b5-13
b 1 PI Feedbac Lo
Sets the time that the PI feedback has to fall below b5-13 before feedback loss is detected.
No
b5-14
b PI Feedbac
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
b5-36
b 7 PI Feedbac
Sets the time that the PI feedback must exceed the value set to b5-36 before feedback loss is detected.
No
b5-37
PI Sleep/Snoo e
The PI Sleep/Snooze function stops the drive when the PI output or the frequency reference falls below the PID Sleep/Snooze
operation level for a certain time. The drive will resume operating when the PI output or frequency reference rise above the
PI Sleep/Snooze operation level for the specified time. An example of PI Sleep/Snooze operation appears in the figure below.
Notes on Usin t e PI Sleep/Snoo e Function
• The PI Sleep/Snooze function is active even when PI control is disabled.
• The PI Sleep/Snooze function stops the motor according to the stopping method set to b1-03.
The PI Snooze Function is a variation on the Sleep Function. Set b5-21 to 2 to select the PI Snooze function. After selecting
the Snooze Function, the drive monitors the output frequency. If the output frequency drops below the PI Snooze Level (b5-22),
and stays below that level for at least the time set to b5-23, PI Snooze Delay Time, the drive output shuts off.
Detection Le el
Name
PI Feedback Low Detection Level
Detection ime
Name
PI Feedback Low Detection Time
i Detection Le el
Name
PI Feedback High Detection Level
i Detection ime
Name
PI Feedback High Detection Time
PI Output
PI Sleep/Snooze
Level (b5-15)
Sleep Delay Time
b5-16
Internal Run
command
Run
External Run
command
During Run
Fi ure 1 18 PI Sleep/Snoo e Operation
= E) and cause the drive to stop the motor. Detection
= 19).
b5-16
Sleep Delay Time
Stop
Run command enabled
Continues to output "During Run"
Settin an e
0 to 100%
Settin an e
0.0 to 25.5 s
Settin an e
0 to 100%
Settin an e
0.0 to 25.5 s
De ault
0%
De ault
1.0 s
De ault
100%
De ault
1.0 s