YASKAWA HV600 Installation & Startup page 242

Ac drive bypass for hvac fan and pump applications
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7.14 Y: Application Features
No.
Name
(Hex.)
YF-24
PI Auxiliary Ctrl Maximum
Level
(3F67)
RUN
YF-25
PI Aux Control Activation
Level
(3F68)
RUN
YF-26
PI Aux Control Activation
Delay
(3F69)
RUN
YF-32
PI Aux Custom Unit
Character 1
(3F6F)
YF-33
PI Aux Custom Unit
Character 2
(3F70)
YF-34
PI Aux Custom Unit
Character 3
(3F71)
YF-35
PI Aux Minimum
Transducer Scale
(3F72)
242
Sets the maximum level for PI Auxiliary Control. When the level is more than this setting for longer
than YF-05 [PI Aux Control Sleep Delay Time], the drive will go to sleep and turn off all lag drives.
Note:
• Set this parameter to 0.0 to disable the function.
• Parameters YF-21 [PI Aux Ctrl Level Unit Selection] and YF-22 [PI Aux Level Decimal Place
Pos] set the unit and resolution.
Sets the level to activate the PI Auxiliary Control.
Note:
• The drive response changes when the YF-23 [PI Aux Ctrl Output Level Select] setting changes.
–YF-23 = 0 [Direct Acting]:
When the PI Aux Feedback level is more than this setting for longer than YF-26 [PI Aux
Control Activation Delay], the drive will activate the PI Auxiliary Control to control the
output frequency.
–YF-23 = 1 [Inverse Acting]:
When the PI Aux Feedback level is less than this setting for longer than YF-26, the drive will
activate PI Auxiliary Control to control the output frequency.
• When you set this parameter to 0.0 PSI, PI Auxiliary Control is always enabled.
• Parameters YF-21 [PI Aux Ctrl Level Unit Selection] and YF-22 [PI Aux Level Decimal Place
Pos] set the unit and resolution.
Sets the delay time to activate the PI Auxiliary Control.
Note:
• The drive response changes when the YF-23 [PI Aux Ctrl Output Level Select] setting changes.
–YF-23 = 0 [Direct Acting]:
When the PI Aux Feedback level is more than YF-25 [PI Aux Control Activation Level] for
longer than this time, the drive will activate the PI Auxiliary Control to control the output
frequency.
–YF-23 = 1 [Inverse Acting]:
When the PI Aux Feedback level is less than YF-25 for longer than this time, the drive will
activate PI Auxiliary Control to control the output frequency.
• When you set this parameter to 0.0 PSI, PI Auxiliary Control is always enabled.
Sets the first character of the PI Aux custom unit display when YF-21 = 49 [PI Aux Ctrl Level Unit
Selection = Custom (YF-32~34)].
Sets the second character of the PI Aux custom unit display when YF-21 = 49 [PI Aux Ctrl Level
Unit Selection = Custom (YF-32~34)].
Sets the third character of the PI Aux custom unit display when YF-21 = 49 [PI Aux Ctrl Level Unit
Selection = Custom (YF-32~34)].
Sets the minimum scale output of the pressure transducer that is connected to the terminal set for H3-
xx = 27 [MFAI Function Selection = PI Auxiliary Control Feedback].
Note:
• To enable this parameter, set it to less than YF-02 [PI Aux Control Transducer Scale]. If you set
it to more than YF-02, it will disable the PI Auxiliary Feedback (set to 0).
• Parameters YF-21 [PI Aux Ctrl Level Unit Selection] and YF-22 [PI Aux Level Decimal Place
Pos] set the unit and resolution.
YASKAWA TOEPYAIH6B01A HV600 AC Drive Narrow Bypass Installation & Startup
Description
Default
(Range)
0.0 PSI
(0.0 - 6000.0 PSI)
0.0 PSI
(0.0 - 6000.0 PSI)
2 s
(0 - 3600 s)
41
(20 - 7A)
41
(20 - 7A)
41
(20 - 7A)
0.0 PSI
(-999.9 - +999.9 PSI)

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