4 pump basics, Pump basics, Feedback device scaling – Yaskawa iQpump Drive User Manual User Manual
Page 75
4.4 Pump Basics
YASKAWA TM.iQp.01 iQpump Drive User Manual
75
4.4
Pump Basics
◆ Feedback Device Scaling
Table 4.10
The installed feedback device requires the proper scaling. For proper installation of the feedback device, refer to Chapter 3. The
feedback scaling is determined by programming the feedback device scaling parameter P1-03.
To make setting up the feedback scaling easier, first select the actual system units desired for the iQpump drive to regulate. The system
units can be selected by programming the desired units in parameter P1-02.
Table 4.11
The feedback range can be specified with one single parameter: P1-03 Feedback Device Scaling. The maximum feedback value for the
iQpump is 3600 (PSI, GPM, etc.).
If the monitors seem more natural in terms of PSI, set P1-02 = 1.
If another engineered unit, such as WC (Inches of Water) or GPM (Gallons per Minute), is desired, set P1-02 to the appropriate value.
The setting programmed in the Feedback Device Scaling (P1-03) will determine the display at 100% and the position of the decimal
point.
X X X X X
Digit 5 Digit 4 Digit 3 Digit 2 Digit 1
Digits 1 through 4 set the desired number to be displayed at 100% PSI.
Digit 5 determines the number of decimal places.
If Digit 5 = 0 number format is XXXX
If Digit 5 = 1 number format is XXX.X
If Digit 5 = 2 number format is XX.XX
If Digit 5 = 3 number format is X.XXX
Example: If P1-02 = 1 (PSI) and P1-03 = 00145, then at 100% PSI, the digital operator would display 145 PSI for monitor U1-24 or
U1-38.
Parameter
No.
Modbus
Address
Parameter Name
Digital Operator
Display
Description
Setting
Range
Factory
Setting
Menu
Location
Page
No.
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
13000 = 300.0
25000 = 50.00
32000 = 2.000
1 to 36000
(system
units
P1-02)
00145
Pump Quick
Setup
—
Setting
Description
Setting
Description
0
Inch or Water
7
Liters/sec
1
PSI
8
Bar
2
GPM
9
Pascal
3
Degrees Fahrenheit
10
Degrees Celsius
4
CFM
11
Feet
5
CMH
12
Percent
6
Liters
—
—