Parameter Details
5
5.13 Y: Application Features
YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference 411
0 : Current (A)
The drive compares the U1-03 [Output Current], U1-08 [Output Power], or U1-09 [Torque Ref] value with these
LOP Detection Level parameters:
• b5-84 [Feedback Loss Loss Of Prime Lvl]
• S5-08 [HAND Reference Prime Loss Level]
• Y1-19 [Prime Loss Level]
• Y4-05 [Pre-Charge Loss of Prime Level]
1 : Power (kW)
2 : Torque (%)
■ Y1-19: Prime Loss Level
No.
(Hex.)
Name Description
Default
(Range)
Y1-19
(3C12)
RUN
Prime Loss Level Sets the level to detect the LOP [Loss of Prime] in the pump when in Auto or Sleep Boost Mode. 0.0
(0.0 - 1000.0)
■ Y1-20: Prime Loss Time
No.
(Hex.)
Name Description
Default
(Range)
Y1-20
(3C13)
RUN
Prime Loss Time Sets the delay time before the drive detects an LOP [Loss of Prime] condition. The timer starts when
the drive detects the conditions in Y1-18 [Prime Loss Detection Method] and Y1-19 [Prime Loss
Level].
20 s
(0 - 600 s)
■ Y1-21: Prime Loss Activation Freq
No.
(Hex.)
Name Description
Default
(Range)
Y1-21
(3C14)
Prime Loss Activation Freq Sets the frequency level above which the drive enables Loss of Prime detection. 0.0 Hz
(0.0 - 400.0)
■ Y1-22: Prime Loss Selection
No.
(Hex.)
Name Description
Default
(Range)
Y1-22
(3C15)
Prime Loss Selection Sets the drive response when the drive is in the Loss of Prime condition. 0
(0 - 2)
0 : Fault (and Digital Output)
The keypad shows an LOP [Loss of Prime] fault and the motor coasts to stop. The output terminal set for H2-xx = 94
[MFDO Function Selection = Loss of Prime] will activate.
To deactivate the digital output, do a Fault Reset.
1 : Alarm (and Digital Output)
The keypad shows an LOP [Loss of Prime] alarm and the output terminal set for H2-xx = 94 will activate.
2 : Digital Output Only
The output terminal set for H2-xx = 94 will activate.
■ Y1-23: Prime Loss Max Restart Time
No.
(Hex.)
Name Description
Default
(Range)
Y1-23
(3C16)
Prime Loss Max Restart
Time
Sets the time in minutes that the drive will wait before it tries a restart after a restart fails or after it
does not do a restart because of a fault.
0.2 min
(0.2 - 6000.0 min)
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