Yaskawa iQpump Controller Programming Manual User Manual
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YASKAWA
TM.iQp.07 iQpump Controller Programming Manual
sleep based upon the standard sleep settings, controlled by parameters P2-01 and P2-02. If the drive goes to sleep due to P2-01 and P2-02,
a sleep boost will be performed.
When the level control is enabled (P8-01 = 1), the drive will only wake up (or start) once the water level goes above the wake-up level
(P8-05) AND the standard sleep function calls for a wake-up (set by parameters P1-04 and P1-05.
Low Level Detection
Independent of the pressure and level control is a low level detection feature. This feature is active all of the time, when running, when
not running, and in “Hand” mode. If the level in the well drops below the Low Level Detection Level (P8-07), for more than the Low
Level Detection Delay Time (P8-08), the drive will respond according to the Low Level Behavior (P8-09) parameter. The Low Water
Level digital output (H2-0x = 57) will activate anytime the level in the well drops below the Low Level Detection Level (P8-07), for more
than the Low Level Detection Delay Time (P8-08), or the drive is faulted on a LOWWL - Low Water Level fault.
Figure 1.171
Figure 175. Simple Block Diagram of Pressure & Level Control
Figure 1.172
Figure 176. Constant Pressure with Well Draw Down Control - Regulate Water Level (reduced flow & pressure)
+
-
Pressure
C ontrol
PI
Pressure Setpoint
(d1-01 ~ d1-04)
Pressure F eedback
T erm inal A2
+
-
Level
C ontrol
PI
W ater Level Setpoint
(P8-03)
W ater Level F eedback
T erm inal A1
R eference
Selection
Logic
Level C ontrol
M in Speed
P8-06
M in Pum p F req
P1-06
or
T hrust F req
P4-05
F requency
R eference
Param eters
b5-02 ~ b5-10
Param eters
P8-10 ~ P8-11
W ater Level
T erm A1
(U 1-98)
Pressure F eedback
T erm A2
(U 1-91)
Output F requency
(U 1-02)
Level C ontr ol M in Speed
W ake - U p Level
Level C ontr ol Setpoint
Level C ontr ol M in Level
Pr essur e Setpoint
Sleep D elay T im e
Star t D elay T im e
1
2
3
4
1
1
Pressure Control – Enough w ater in w ell to m aintain pressure & flow .
2
Level Control – N ot enough w ater in w ell, pressure & flow decrease below setpoint to m aintain level in w ell .
3
Not Enough Water – Level C ontrol M in . Speed (P8-06) draw s w ater dow n below P8-04 level, drive goes to sleep .
4
Drive Sleeping – W aiting for w ell to recharge and level to go above W ake-U p Level (P8-05).
Wake Up Level (P8-05) > Level Control Setpoint (P8-03) > Level Control Minimum Level (P8-04)
P8-05
P8-03
P8-04
P2-03
P1-05
P8-06
d1-0x