YASKAWA HV600 Technical Reference page 429

Ac drive bypass for hvac fan and pump applications
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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.
YF-32: PI Aux Custom Unit Character 1
No.
Name
(Hex.)
YF-32
PI Aux Custom Unit
Character 1
(3F6F)
Refer to
Custom Units on page 213
YF-33: PI Aux Custom Unit Character 2
No.
Name
(Hex.)
YF-33
PI Aux Custom Unit
Character 2
(3F70)
Refer to
Custom Units on page 213
YF-34: PI Aux Custom Unit Character 3
No.
Name
(Hex.)
YF-34
PI Aux Custom Unit
Character 3
(3F71)
Refer to
Custom Units on page 213
YF-35: PI Aux Minimum Transducer Scale
No.
Name
(Hex.)
YF-35
PI Aux Minimum
Transducer Scale
(3F72)
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 SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference
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)].
for more information about available selections.
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)].
for more information about available selections.
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)].
for more information about available selections.
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].
5.13 Y: Application Features
Description
Description
Description
Description
Default
(Range)
41
(20 - 7A)
Default
(Range)
41
(20 - 7A)
Default
(Range)
41
(20 - 7A)
Default
(Range)
0.0 PSI
(-999.9 - +999.9 PSI)
5
429

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