Examples Of Actual Application; Constant Flow Control - Hitachi L100 300 User Manual

4. EXAMPLE OF ACTUAL APPLICATION
You can find in this chapter some typical setting examples for actual applications.

4-1 Constant Flow Control

Target
4 bit digital signal
Motor
Fig. 4-1 Example of Constant Flow Control
In this case (targets are 150m
3
300m /min), the settings would be as follows:
Function Number
Integrated Operator DOP, DRW
F01 Monitor
mode
A01
A11 F31
A12
A13
A14
A21 F11
A71 F39
A72
A73
A74
A75
A76
L100/
Feedback
SJ100
4 - 20mA
3
(500m /min when 20mA)
Pump
3
/min &
Function Name
Under PID Control Mode
Target 0
Target input origin setting
Feedback value input corresponding %
for lower acceptable level
Feedback value input corresponding %
for upper acceptable level
Feedback value
for lower acceptable level setting
Feedback value
for upper acceptable level setting
Target 1
PID mode selection
P-gain adjustment
I -gain adjustment
D-gain adjustment
PID scale conversion factor setting
Source of feedback signal selection
SJ100/L100 / PID / 14
Transducer
Flow sensor
Flow : 150m
%
3
500m /min 100
3
300m /min 60
3
150m /min
30
0
0 4mA
0 20%
Feedback value range setting
Input
Data
Directly input "150 [m
150
because scale conversion ratio is
given
02 Operator
0%
0
100 100%
input 20%
20
input 100%
100
300 [m
300
01 PID mode ON
Depends on each application
-
-
-
100% when 500 [m
5.0
00 Feedback from OI-L terminal
3 3
/min or 300m /min constant
10.6mA
20mA
5.8mA
29%
53%
100%
Remarks
3
/min]"
3
/min]
3
/min]