YASKAWA T1000V Technical Manual page 128

5.2 b: Application
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 once the PID output or frequency reference rises above
the PID Sleep operation level for the specified time. The operation is explained in the figure below.
Figure 5.20
Notes on using the PID Sleep function:
• The PID Sleep function is always active, even if PID control is disabled.
• The method the Sleep function uses to stop the motor is defined by parameter b1-03.
• The parameters necessary to set up the PID Sleep function are explained below.
b5-15: PID Sleep Function Start Level
■
Sets the level used for 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
in b5-16. It resumes the operation when the PID output or frequency reference is above b5-15 for longer than the time set
in b5-16.
No.
b5-15
b5-16: PID Sleep Delay Time
■
Sets the delay time to activate or deactivate the PID Sleep function.
No.
b5-16
■ b5-17: PID Accel/Decel Time
The PID acceleration/deceleration time is applied on the PID setpoint value.
As the normal acceleration times C1-
and can cause hunting or over- and undershooting when the setpoint changes quickly. Using the PID acceleration/
deceleration time instead helps to avoid such problems.
The PID acceleration/deceleration time can be canceled using a digital input programmed for "PID SFS cancel" (H1-
= 34).
No.
b5-17
b5-18: PID Setpoint Selection
■
Enables or disables parameter b5-19 for PID setpoint.
No.
b5-18
128
PID Output
PID Sleep Level ( b5-15)
Sleep Delay Time
b5-16
Internal Run
command
Run
External Run
command
During Run
Figure 5.20 PID Sleep Operation
Name
PID Sleep Function Start Level
Name
PID Sleep Delay Time
are applied after the PID output, they reduce the responsiveness of the system
Name
PID Accel/Decel Time
Parameter Name
PID Setpoint Selection
YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual
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
Setting Range
0 to 255 s
Setting Range
0 or 1
Default
0.0 Hz
Default
0.0 s
Default
0 s
Default
0