YASKAWA HV600 Manual page 471

• If Not Maintaining Setpoint condition continues for longer than Y1-16 [Not Maintaining Setpoint Time] the drive
will detect an NMS fault.
• If the feedback increases or decreases to less than Y1-15 from the setpoint before Y1-16 expires, the drive will
deactivate the output terminal, clear the alarm, and reset Y1-16.
1 : Alarm (and Digital Output)
The keypad will show an NMS [Setpoint Not Met] alarm and the output terminal set for H2-xx = AC will activate.
To deactivate the digital output and clear the alarm, increase or decrease the feedback to less than Y1-15 from the
setpoint.
Note:
There is no time limit for this condition.
2 : Digital Output Only
The drive will detect Not Maintaining Setpoint and the output terminal set for H2-xx = AC will activate.
To deactivate the digital output, increase or decrease the feedback to less than Y1-15 from the setpoint.
Note:
There is no time limit for this condition.
■
Y1-18: Prime Loss Detection Method
No.
Name
(Hex.)
Y1-18 Prime Loss Detection
Method
(3C11)
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]
0 : Current (A)
1 : Power (kW)
2 : Torque (%)
Note:
The monitors compared with LOP Detection Level are different for different control methods:
• V/f, OLV/PM: U6-01 [Iq Secondary Current]
• EZOLV: U1-09 [Torque Reference]
■
Y1-19: Prime Loss Level
No.
Name
(Hex.)
Y1-19 Prime Loss Level
(3C12)
RUN
■
Y1-20: Prime Loss Time
No.
Name
(Hex.)
Y1-20 Prime Loss Time
(3C13)
RUN
YASKAWA TOEPYAIHV6002A HV600 Drive Programming
V/f OLV/PM EZOLV OLV/PM
Sets the units and quantity that the drive will use to determine LOP [Loss of Prime].
V/f OLV/PM EZOLV OLV/PM
Sets the level to detect the LOP [Loss of Prime] in the pump when in Auto or Sleep Boost Mode.
V/f OLV/PM EZOLV OLV/PM
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].
2.14 Y: Application Features
Description
Description
Description
Default
(Range)
0
(0 - 2)
Default
(Range)
0.0
(0.0 - 1000.0)
Default
(Range)
20 s
2
(0 - 600 s)
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