YASKAWA A1000 Technical Manual page 174

5.2 b: Application
Setting 3: Digital output only, even if PID is disabled by digital input
Same as b5-12 = 0. Detection is still active even if PID is disabled by a digital input (H1- = 19).
Setting 4: Feedback loss alarm, even if PID is disabled by digital input
Same as b5-12 = 1. Detection is still active even if PID is disabled by a digital input (H1- = 19).
Setting 5: Feedback loss fault, even if PID is disabled by digital input
Same as b5-12 = 2. Detection is still active even if PID is disabled by a digital input (H1- = 19).

b5-13: PID Feedback Low Detection Level
Sets the PID feedback detection low level as a percentage of E1-04 (Maximum Output Frequency). The PID feedback
must fall below this level for longer than the time set to b5-14 before feedback loss is detected.
No.
b5-13

b5-14: PID Feedback Low Detection Time
Sets the time that the PID feedback has to fall below b5-13 before feedback loss is detected.
No.
b5-14

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

b5-37: PID Feedback High Detection Time
Sets the time for that the PID feedback has to exceed b5-36 before feedback loss is detected.
No.
b5-37

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. An example of PID Sleep operation appears in the figure below.
Figure 5.28
Notes on using the PID Sleep function
• The PID Sleep function is always active, even if PID control is disabled.
• The PID Sleep function stops the motor according to the stopping method in b1-03.
The parameters necessary that control the PID Sleep function are explained below.
174
Name
PID Feedback Low Detection Level
Name
PID Feedback Low 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 5.28 PID Sleep Operation
b5-16
Stop
Run command enabled
Continues to output "During Run"
YASKAWA ELECTRIC SIEP C710616 27G YASKAWA AC Drive A1000 Technical Manual
Setting Range
0 to 100%
Setting Range
0.0 to 25.5 s
Setting Range
0 to 100%
Setting Range
0.0 to 25.5 s
Sleep Delay Time
Default
0%
Default
1.0 s
Default
100%
Default
1.0 s