YASKAWA iQpump1000 User Manual page 171

10.
The drive will stage lag pumps on based on the output frequency of the drive. At start, only the drive pump will be
running. If the drive output frequency reaches 60 Hz for the time set in P3-05 and the pressure setpoint cannot be
met, the drive will stage on (turn on) one of the lag pumps. The drive will stage on additional lag pumps until the
pressure setpoint can be achieved.
11.
The drive will stage lag pumps off based on the output frequency of the drive. Assume the system has been running
with multiple lag pumps on. Now the demand starts to drop. The drive's output frequency will drop. If the output
frequency falls below a lag pump frequency shutdown level for the time set in P3-09, the pump is de-staged. The drive
will continue to de-stage pumps until the pressure setpoint can be met
12.
Configure the sleep function. The drive can be programmed to shut off or sleep if the pressure stays at or above the
Q1-01 setpoint with all lag pumps de-staged and the drive running at the minimum pump speed. In order to turn on
the sleep function, set parameter P1-04 (Start – Draw Down Level) to a level slightly less than the pressure Q1-01
setpoint. When the drive is sleeping and the system pressure drops below the P1-04 setting, the drive will wake up
and begin regulating pressure again. By sleeping, the drive will save energy and mechanical wear. A setting of zero
in P1-04 will disable the sleep function (default setting).
13.
Press the AUTO key to start the drive with PI control (pressure control). Press the OFF key to stop the drive
14.
The pump can be run in a Hand (local) mode for maintenance purposes by pressing the HAND key while the drive is
stopped. The HAND key acts as a start button. Press the OFF button to stop the drive. Press AUTO to return the drive
to PI control. The HAND frequency reference is preset to 6 Hz in parameter P5-02. Disable the HAND key by setting
P5-04 = 0 (disabled).
n Related Parameters
No.
A1-03 Initialize Parameters
E2-01 Motor Rated Current
E2-04 Number of Motor Poles
H3-06 Terminal A3 Function Selection
H3-10 Terminal A2 Function Selection
P1-01 Pump Mode
P1-03 Feedback Device Scaling
P1-04 Start / Draw Down Level
P1-06 Minimum Pump Speed
P1-11 High Feedback Level
P3-00 Number of Lag Pumps
P3-05 Add Pump Delay Time
P3-09 Shutdown Pump Delay Time
YASKAWA TOEP YAIP1W 01F YASKAWA AC Drive - iQpump1000 User Manual
Parameter Name
4.6 iQpump Presets and Functions
Setting Values
Default: 0
Range: 0 to 5550; 6008 to 6014; 7770, 7771
Default:
Min.: 10% of drive rated current
Max.: 200% of drive rated current
Default: 2
Min.: 2
Max.: 48
Default: 20
Range: 0 to 32
Default: B
Range: 0 to 32
Default: 0
Range: 0, 1, 3
Default: 145.0 PSI
Min.: 0.1
Max.: 6000.0
Default: 0.0
Min.: -999.9
Max.: 999.9
Default: 40.0 Hz
Min.: 0.0
Max.: [E1-04]
Default: 0.0 PSI
Min.: 0.0
Max.: 6000.0
Default: 1
Min.: 1
Max.: 5
Default: 2 s
Min.: 0
Max.: 3600
Default: 5 s
Min.: 0
Max.: 3600
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