YASKAWA HV600 Technical Reference page 418

Ac drive bypass for hvac fan and pump applications
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5.13 Y: Application Features
• When b5-09 = 0 [Normal Output (Direct Acting)]:
The terminal set for H2-xx = 42 will deactivate only when the Feedback is less than the "Setpoint - Hysteresis" for
the time set in Y4-39. When the Feedback is more than the Setpoint, the terminal will stay active.
• When b5-09 = 1 [Reverse Output (Reverse Acting)]:
The terminal set for H2-xx = 42 will deactivate only when the Feedback is more than the "Setpoint + Hysteresis" for
the time set in Y4-39. When the Feedback is less than the Setpoint, the terminal will stay active.
Y4-37: Pressure Reached Hysteresis Lvl
No.
Name
(Hex.)
Y4-37
Pressure Reached Hysteresis
Lvl
(3D1E)
RUN
Y4-38: Pressure Reached On Delay Time
No.
Name
(Hex.)
Y4-38
Pressure Reached On Delay
Time
(3D1F)
RUN
Y4-39: Pressure Reached Off Delay Time
No.
Name
(Hex.)
Y4-39
Pressure Reached Off Delay
Time
(3D20)
RUN
Y4-40: Pressure Reached Detection Sel
No.
Name
(Hex.)
Y4-40
Pressure Reached Detection
Sel
(3D21)
RUN
0 : Always
The digital output set for H2-xx = 42 [MFDO Function Selection = Pressure Reached] will activate in all drive
statuses. The digital output will engage when the drive is stopped or sleeping.
1 : Drive Running
The digital output set for H2-xx = 42 will activate only when the drive supplies the output voltage (not base blocked)
to the motor. The digital output will not engage when the drive is sleeping.
2 : Run Command
The digital output set for H2-xx = 42 will activate only when there is an active Run command, for example, AUTO or
HAND.
Y4-41: Diff Lvl Src Fdbk Backup Select
No.
Name
(Hex.)
Y4-41
Diff Lvl Src Fdbk Backup
Select
(3D22)
RUN
0 : Disabled
1 : Enabled
418
Sets the hysteresis level that will cause the drive to exit the Pressure Reached condition.
Sets the length of time that the drive will wait before it activates the Pressure Reached condition.
Sets the length of time that the drive will wait before it deactivates the Pressure Reached condition.
Sets the drive status that triggers the Pressure Reached Detection digital output.
Sets the function to enable or disable Differential Level Source [H3-xx = 2D] as the backup
transducer if there is a failure with the primary PID Feedback transducer [H3-xx = B] and the PID
Feedback Backup transducer [H3-xx = 24] is not available.
Description
Description
Description
Description
Description
YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference
Default
(Range)
0.30%
(0.1 - 10.00%)
Default
(Range)
1.0 s
(0.1 - 60.0 s)
Default
(Range)
1.0 s
(0.1 - 60.0 s)
Default
(Range)
0
(0 - 2)
Default
(Range)
0
(0, 1)

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