YASKAWA P1000 Technical Manual page 167

No.
b5-14
n b5-36: PID Feedback High Detection Level
Sets the excessive PID feedback detection high level as a percentage of E1-04 (Maximum Output Frequency). The PID
feedback must exceed this level for longer than the time set to b5-37 before feedback loss is detected.
No.
b5-36
n b5-37: PID Feedback High Detection Time
Sets the time that the PID feedback must exceed the value set to b5-36 before feedback loss is detected.
No.
b5-37
n PID Sleep
The PID Sleep function stops the drive when the PID output or the frequency reference falls below the PID Sleep operation
level for a certain time. The drive will resume operating when the PID output or frequency reference rise above the PID Sleep
operation level for the specified time. An example of PID Sleep operation appears in the figure below.
Notes on using the PID Sleep function
• The PID Sleep function is active even when PID control is disabled.
• The PID Sleep function stops the motor according to the stopping method set to b1-03.
The parameters necessary to control the PID Sleep function are explained below.
n b5-15: PID Sleep Function Start Level
Sets the level that triggers PID Sleep.
The drive goes into Sleep mode if the PID output or frequency reference is smaller than b5-15 for longer than the time set to
b5-16. The drive resumes operation when the PID output or frequency reference is above b5-15 for longer than the time set
to b5-16.
No.
b5-15
n b5-16: PID Sleep Delay Time
Sets the delay time to activate or deactivate the PID Sleep function.
No.
b5-16
n b5-17: PID Accel/Decel Time
The PID acceleration/deceleration time is applied on the PID setpoint value.
When the setpoint changes quickly, the normal C1-oo acceleration times reduce the responsiveness of the system as they
are applied after the PID output. The PID accel/decel time helps avoid the hunting and overshoot and undershoot that can
result from the reduced responsiveness.
YASKAWA SIEP YAIP1U 01C AC Drive - P1000 Technical Manual
Name
PID Feedback Loss Detection Time
Name
PID Feedback High Detection Level
Name
PID Feedback High Detection Time
PID Output
PID Sleep Level ( b5-15)
Sleep Delay Time
b5-16
Internal Run
command
Run
External Run
command
During Run
Figure 5.17 PID Sleep Operation
Name
PID Sleep Function Start Level
Name
PID Sleep Delay Time
Setting Range
0.0 to 25.5 s
Setting Range
0 to 100%
Setting Range
0.0 to 25.5 s
b5-16
Sleep Delay Time
Stop
Run command enabled
Continues to output "During Run"
Setting Range
0.0 to 400.0 Hz
Setting Range
0.0 to 25.5 s
5.2 b: Application
Default
1.0 s
Default
100%
Default
1.0 s
5
Default
0.0 Hz
Default
0.0 s
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