Yaskawa iQpump Controller Programming Manual - Manual (Page 229)

YASKAWA TM.iQp.07 iQpump Controller Programming Manual 229
Figure 1.173
Figure 177. Constant Pressure with Well Draw Down Control - Maintain Flow and Pressure
Table 102 Related Parameters
Parameter
No.
Addr.
Hex
Parameter Name
Digital Operator Display
Description
Setting
Range
Factory
Setting
Menu
Location
P8-01 860
Pressure and Level Control
Select
Pres&Lvl Control
Enables / Disables the Constant Pressure With Well Draw Down
Control.
0: Disabled
1: Enabled
0 ~ 1 0 Programming
P8-02 861
Water Level Scaling
Water Lvl Scale Sets the full scale (20 mA) output of the pressure transducer that is
connected to Terminal A1.
5 ~ 500 psi 100 Programming
P8-03

862
Water Level Setpoint
Water Lvl Setpnt Sets the amount of water above the sensor that the drive will attempt
to regulate to. 0.0 ~
1200.0 ft
20.0 Programming
P8-04

863
Minimum Water Level
Min Water Level When the amount of water above the sensor drops below this level
for more than the P2-03 time, the drive will go to sleep. 0.0 ~
1200.0 ft
10.0 Programming
P8-05

864
Wake-Up Water Level
Wake-Up Level
If the drive has been forced to sleep based upon the minimum water
level (P8-04), the water will have to go above this level for more than
the P1-05 time in order to wake up.
0.0 ~
1200.0 ft
30.0 Programming
P8-06

865
Level Control Minimum Speed
Level Min Spd
This parameter sets the minimum speed the drive will be allowed to
run at when the drive is controlling the water level. When the drive is
controlling pressure or this parameter is set less than P1-06 & P4-05,
P1-06 & P4-05 will be used as the minimum speed.
0.00 ~
120.0 Hz
0.00 Programming
P8-07

866
Low Level Detection Level
Low Level Detect
When the amount of water above the sensor 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 ~
1200.0 ft
0.0 Programming
P8-08

867
Low Level Detection Time
Delay
Low Lvl Det Tm
Sets the amount of time delay that the water level must drop below
the P8-07 level before the drive will react. 0.0 ~
300.0 min
0.1 Programming
P8-09 868
Low Level Behavior
Low Lvl Behavior
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.
0: No Display (Digital Output Only)
1: Alarm Only
2: Fault
0 ~ 2 1 Programming
P8-10

869
Level Control Proportional Gain
Lvl Ctrl P Gain
Sets the proportional gain for the water level control.
0.00 ~
25.00
2.00 Programming
P8-11

86A
Level Control Integral Time
Lvl Ctrl I Time Sets the integral time for the water level control. A setting of zero
disables the water level control integrator. 0.0 ~
360.0 s
5.00 Programming
 Denotes that parameter can be changed when the drive is running.
W ater Level
T erm A1
(U 1-98)
Pressure F eedback
T erm A2
(U 1-91)
Output F requency
(U 1-02)
1 4 1
1 Pressure Control – Enough w ater in w ell to m aintain pressure & flow . If w ater level drops 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 Minimum Level (P8-04) > Level Control Setpoint (P8-03)
P8-05
P8-04
P8-03
P2-03
P1-05
d1-0x
Wake-Up Level
Level Control Minimum Level
Level Control Setpoint
Sleep Delay Time
Start Delay Time
Pressure Setpoint