YASKAWA HV600

5.13 Y: Application Features
408 YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference
Note:
• Unit and decimal place change when the system units change.
• Range is 0.00 to 99.99 with sign-bit “-” indicating Delta to Setpoint.
■ Y1-09: Low Feedback Lvl Fault Dly Time
No.
(Hex.)
Name Description
Default
(Range)
Y1-09
(3C08)
RUN
Low Feedback Lvl Fault Dly
Time
Sets the delay time for the drive to detect an LFB [Low Feedback Sensed] fault after the feedback
level decreases to less than the value set in Y1-08 [Low Feedback Level].
10 s
(0 - 3600 s)
Note:
Set Y1-10 = 0 [Low Feedback Selection = Fault (and Digital Output)] to enable this parameter.
■ Y1-10: Low Feedback Selection
No.
(Hex.)
Name Description
Default
(Range)
Y1-10
(3C09)
Low Feedback Selection Sets the drive response when the feedback decreases to less than Y1-08 [Low Feedback Level] for
longer than the time set in Y1-09 [Low Feedback Lvl Fault Dly Time].
0
(0 - 2)
The drive enables the Low Feedback detection when:
• Parameter Y1-08 > 0.0
• Drive is running in AUTO Mode, including sleep boost and feedback drop detection (b5-09 = 0 [PID Output Level
Selection = Normal Output (Direct Acting)])
• There is a Run command, including sleep and timer operation (b5-09 = 1 [Reverse Output (Reverse Acting)])
0 : Fault (and Digital Output)
The keypad will show LFB [Low Feedback Sensed] and the motor coasts to stop. The output terminal set for H2-xx =
97 [MFDO Function Selection = Low Feedback] will activate.
To deactivate the digital output, do a Fault Reset.
1 : Alarm (and Digital Output)
The keypad will show LOFB [Low Feedback Sensed] and the output terminal set for H2-xx = 97 will activate.
To deactivate the digital output and clear the alarm, increase the feedback to more than Y1-08 + Y1-14 [Feedback
Hysteresis Level], or make sure that one or more of the conditions that enable Low Feedback detection are no longer
true.
2 : Digital Output Only
The output terminal set for H2-xx = 97 will activate.
To deactivate the digital output and clear the alarm, increase the feedback to more than Y1-08 + Y1-14, or make sure
that one or more of the conditions that enable Low Feedback detection are no longer true.
■ Y1-11: High Feedback Level
No.
(Hex.)
Name Description
Default
(Range)
Y1-11
(3C0A)
RUN
High Feedback Level Sets the upper detection level for the PID feedback. 0.00%
(0.00 - 99.99%)
Note:
• Unit and decimal place change when the system units change.
• Range is 0.00 to 99.99 with sign-bit “+” indicating Delta to Setpoint.