Yaskawa iQpump Drive User Manual - Manual (Page 127)

5.2 Pump Basic
YASKAWA TM.iQp.01 iQpump Drive User Manual 127
5.2 Pump Basic
◆ Parameter Overview — P1 Group
Table 5.6
◆ P1 Pump Minimum Speed and No-Flow Detection
The iQpump controller can be programmed to operate the pump motor at a user set minimum speed and has three independent built-in
functions to protect the pump against a no-flow condition.
The following sections describe each of these functions.
■
Set Minimum Pump Speed (P1-06)
The required minimum operating speed of the pump motor can be set with Parameter P1-06 Minimum Pump Frequency.
Table 5.7
Parameter
No.
Modbus
Address
Parameter Name
Digital Operator
Display
Description
Setting
Range
Factory
Setting
Menu
Location
Page
No.
P1-01 0600H
Pump Mode
Pump Mode
Select type of control operation.
0: Drive Only (Simplex)
1: Drive + 1 Pump (Duplex)
2: Drive + 2 Pumps (Triplex)
0 to 2 0 Programming —
P1-02
<0032>
0601H
System Units
System Units
0: WC:InchOfWater
1: PSI:lb/SqrInch
2: GPM:Gallons/Min
3: F:DegFarenheit
4: CFM:Cubic ft/Min
5: CMH:Cubic m/Hr
6: LPH:Liters/Hr
7: LPS:Liters/sec.
8: Bar:Bar
9: Pa:Pascals
10: C:DegCelsius
11: Ft: Feet
<0032>
12: %: Percent
0 to 12 1
Pump Quick
Setup
—
P1-03 0602H
Feedback Device
Scaling
Fb Dev Scaling
Scaling of feedback device in user units (P1-02 = 1, e.g. 150PSI).
Digits 1 through 4 set the maximum feedback number. Digit 5
determines the number of decimal places.
Digit 5 = 0: Number format is XXXX
Digit 5 = 1: Number format is XXX.X
Digit 5 = 2: Number format is XX.XX
Digit 5 = 3: Number format is X.XXX
Examples:
01000 = 1000
10300 = 300.0
25000 = 50.00
32000 = 2.000
1 to 36000
(system
units P1-
02)
00145
Pump Quick
Setup
—
Parameter
No.
Modbus
Address
Parameter Name
Digital Operator
Display
Description
Setting
Range
Factory
Setting
Menu
Location
Page
No.
P1-06

0605H
Minimum Pump
Frequency
Min. Pump Freq.
Minimum drive frequency when operated in the auto mode.
Programmed value will limit minimum PID output. Minimum value
has to be programmed to a value smaller than P3-09 and P3-10 when
Drive is operating in the multiplex mode (P1-01).
0 to 120Hz 35.0Hz
Pump Quick
Setup
—
 Denotes that parameter can be changed when the Drive is running.