Yaskawa iQpump Manual Supplement User Manual
Page 17
7 Suction Control via Constant Pressure w/Well Draw Down
YASKAWA TM.iQp.10 iQpump Technical Manual Supplement
17
P8-05 Wake-Up Suction Pressure
P8-06 Suction Control Minimum Speed
P8-07 Low Suction Pressure Detection Level <1>
P8-08 Low Suction Pressure Detection Time
<1>
P8-09 Water Level/Suction Pressure Selection
Sets how the drive will respond when the water level in the well drops below the P8-07 level for more than the P8-08
time.
P8-10 Suction Control Proportional Gain
P8-11 Suction Control Integral Time
P8-12 Suction Control Auto-Restart Time
Range
Description
Default
0.0 - 1200.0 psi
If the drive is forced to sleep based upon the minimum suction pressure
(P8-04), the suction pressure must go above this level for more than the P8-13
time in order to wake up.
30.0 psi
Range
Description
Default
0.00 - 120.00 Hz
This parameter sets the minimum speed the drive will run when the drive is
controlling suction pressure. When the drive is controlling outlet pressure or
this parameter is set less than P1-06 and P4-05, P1-06 and P4-05 will be used as
the minimum speed.
0.00 Hz
Range
Description
Default
0.0 - 1200.0 psi
When the amount of suction pressure drops below this level for more than the
P8-08 time, the drive will respond depending on the P8-09 setting. A setting of
0.0 disables this detection.
0.0 psi
<1>
Low Level/Low Suction Detection (P8-07/P8-08): This feature is disabled when the drive is in Run-Stop control
(b1-02 = 5, Timed Run).
Range
Description
Default
0.0- 300.0 min
Sets the amount of time delay that the suction pressure must drop below the
P8-07 level before the drive will react. *Time units are defined by P8-14.
0.1 min
Setting
Description
0
No Display (Digital Output Only)
1
Alarm Only (factory default)
2
Fault
3
Auto-Restart (time set by P8-12) (New)
Range
Description
Default
0.00 - 25.00
Sets the proportional gain for the suction pressure control.
2.00
Range
Description
Default
0.0 - 360.0 sec
Sets the integral time for the suction pressure control. A setting of zero disables
the suction pressure control integrator.
5.0 min
Range
Description
Default
0.1 - 6000.0 min
Sets the amount of time the drive will wait before attempting an auto-restart of
the "Low Suction" fault. Effective only when P8-09 = 3 and L5-01 > 0.
5.0 min