Rhymebus RM6F5 series, Operation Manual

Page: 115 / 195

Chapter6 Parameter Description of Pump
115
6
․
6-4-1 The block diagram of setting value and feedback value.
F_127(Iin Gain)
F_128(Iin Bias)
F_124(Proportion
Type of Pressure
Transmitter)
1
0
D
F_108Derivative
Time of
Feedback)
F_103(PID
Control Mode
Selection)
2,4 1,3
F_113(Feedback
Signal Filter)
+
+
-
-
F_103(PID
Control Mode
Selection
1,2
3,4
F_002(Selection
of Command)
0
1
2
Vin
terminal
Setting value
Feedback
value
Pressure command
F_032~F_038
Multi-speed 1~7
Error
Keypad
(KP-207)
Iin
terminal
Multi-speed
level 3,2,1
0 0 0
001~111
F_047(Filter
Setting of Analog
Frequency)
F_040(Vin Gain),
F_041(Vin Bias)
․
6-4-2 The block diagram of PID control.
+
+
+
0
1 0
Analog frequency command
F_031
Primary speed
1
0 0
+
PID_HALT
F_042(Frequency Upper Limit)
F_043(Frequency Lower Limit)
PID_HALT
Error
F_102(PID
Compensation
Gain)
Gain
F_002( Selection
of Command)
0,1
2
F_105
(Proportional
Gain(P))
P
F_104
(P Selection)
0
1
F_111(PID Offset Adjustment)
Bias
F_109(Integration Upper Limitation)
F_110(Integration Lower Limitation
)
F_107
(Derivative Time(D))
D
P
I
F_103(PID
Control Mode
Selection)
1,3
2,4
0
1
F_112(PID
Buffer Space)
F_125(Signal Source
Selection under Close-
Loop Condition)
0
1
Open loop
command from
multi-function
input terminal
1
0
PID
command
F_105
(Proportional
Gain(P))
F_104
(P Selection)
․
6-4-3 PID adjustment
The system reaction condition can be adjusted by P, I, D to improve the system efficiency.
Improper setting may cause system oscillated, please follow below adjustment steps to keep
system stable.
1. Gradually increase the value of proportional gain(P).
2. Gradually decrease the value of integration time(I).
3. Gradually increase the value of derivative time(D).