YASKAWA iQpump1000 Installation & Start?Up Manual page 67

n P1-06: Minimum Pump Speed
Sets the minimum speed at which the drive will run the pump. Most pumps cannot run at low speeds due to cavitation, so be
sure to consult the pump specification sheet for the minimum safe run speed.
No.
P1-06
n P1-08: Low Feedback Level
Sets the level at which a Low Feedback alarm or fault will occur. When the PID feedback falls below the P1-08 setting for
the time set in P1-09, the drive will respond based on the setting in P1-10.
No.
P1-08
<1> Range is 0.0 to 999.9 with sign-bit "-" indicating Delta to Setpoint.
Range is 0.0 to 6000.0 in drive software versions PRG: 8551 and earlier.
n P1-09: Low Feedback Level Fault Delay Time
Sets the delay time after which a Low Feedback alarm or fault will occur. When the PID feedback falls below the P1-08 setting
for the time set in P1-09, the drive will respond based on the setting in P1-10.
No.
P1-09
n P1-10: Low Feedback Selection
Selects the drive response to a Low Feedback condition. When the PID feedback falls below the P1-08 setting for the time set
in P1-09, the drive will respond based on the setting in P1-10.
No.
P1-10
Low feedback detection is enabled when:
• P1-08 > 0.0
• Drive is running in AUTO Mode, including sleep boost and feedback drop detection (standard PID, b5-09 = 0)
• Run Command is present (including sleep and timer operation) (inverse PID, b5-09 = 1)
Setting 0: Fault
When feedback drops below the P1-08 level for longer than the time set in P1-09, the drive will fault on the "LFB – Low
Feedback" fault and coast to a stop.
The digital output programmed to "Low Feedback" (H2-0o = 97) closes. The drive will also display the "Low Feedback –
Low FB Sensed" alarm. The digital output will remain closed until the fault is reset.
Setting 1: Alarm
When feedback drops below the P1-08 level for longer than the time set in P1-09, the digital output programmed to "Low
Feedback" (H2-0o = 97) closes and the drive displays the "Low Feedback – Low FB Sensed" alarm.
When feedback rises above the level determined by P1-08 and P1-14, or when one or more of the conditions that enable low
feedback detection are no longer true, the digital output will open and the alarm will clear.
Setting 2: Digital out only
When feedback drops below the P1-08 level for longer than the time set in P1-09, the digital output programmed to "Low
Feedback" (H2-0o = 97) closes.
When feedback rises above the level determined by P1-08 and P1-14, or when one or more of the conditions that enable low
feedback detection are no longer true, the digital output will open.
YASKAWA TOEP YAIP1W 02E YASKAWA AC Drive - iQpump1000 Installation & Start-up Guide
Parameter Name
Minimum Pump Speed
Parameter Name
Low Feedback Level
Parameter Name
Low Feedback Level Fault Delay Time
Parameter Name
Low Feedback Selection
i.5 Start-Up Programming and Operation
Setting Range
0.0 to E1-04
Setting Range
<1>
Setting Range
0 to 3600 s
Setting Range
0 to 2
Default
40.0 Hz
Default
0.0 PSI
Default
10 s
Default
0
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