YASKAWA E1000 Technical Manual page 150

5.2 b: Application
Figure 5.17
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b5-12: PI Feedback Loss Detection Selection
Enables or disables the feedback loss detection and sets the operation when a feedback loss is detected.
No.
b5-12
Setting 0: Digital Output Only
A digital output set for "PI feedback low" (H2- = 3E) will be triggered if the PI feedback value is below the detection
level set to b5-13 for the time set to b5-14 or longer. A digital output set for "PI feedback high" (H2- = 3F) will be
triggered if the PI feedback value is beyond the detection level set to b5-36 for longer than the times set to b5-37. Neither
a fault nor an alarm is displayed on the digital operator. The drive will continue operation. When the feedback value
leaves the loss detection range, the output is reset.
Setting 1: Feedback Loss Alarm
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"
alarm will be displayed and a digital output set for "PI feedback low" (H2- = 3E) will be triggered. 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" alarm will be
displayed and a digital output set for "PI feedback high" (H2- = 3F) will be triggered. Both events trigger an alarm
output (H1- = 10). The drive will continue operation. When the feedback value leaves the loss detection range, the
alarm and outputs are reset.
Setting 2: Feedback 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- = E) and cause the drive to
stop the motor.
Setting 3: Digital output only, even if PI is disabled by digital input
Same as b5-12 = 0. Detection is still active even if PI is disabled by a digital input (H1- = 19).
Setting 4: Feedback loss alarm, even if PI is disabled by digital input
Same as b5-12 = 1. Detection is still active even if PI is disabled by a digital input (H1- = 19).
Setting 5: Feedback loss fault, even if PI is disabled by digital input
Same as b5-12 = 2. Detection is still active even if PI is disabled by a digital input (H1- = 19).
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b5-13: PI Feedback Loss Detection Level
Sets the feedback level used for PI feedback low detection. The PI feedback has to fall below this level for longer than
the time b5-14 before feedback loss is detected.
No.
b5-13
150
PI feedback value
PI
Feedback
Detection
Loss Level
(b5-13)
PI Feedback
Loss Detection Time
(b5-14)
Figure 5.17 PI Feedback Loss Detection
Parameter Name
PI Feedback Loss Detection Selection
Name
PI Feedback Low Detection Level
YASKAWA ELECTRIC SIEP C710616 35D YASKAWA AC Drive E1000 Technical Manual
no FbL
detection
FbL detection
PI Feedback
Loss Detection Time
(b5-14)
common_TMonly
time
Setting Range
0 to 5
Setting Range
0 to 100%
Default
0
Default
0%