4-22
4-2 Function Mode
4
Func
tions
PID Function
This function enables process control of such elements as flow rate, air volume, and pressure.
•To use this function, set A071 to 01.
•To switch between enable/disable via the terminal block (external signal), allocate 23 (PID enable/
disable) to the desired multi-function input. Select OFF for enable and ON for disable.
Basic Structure of PID Control (Example)
PID Enable/Disable
The PID enable/disable function disables the PID function temporarily through terminal input. This
overrides the A071 setting to control the motor frequency.
Parameter No.
Function name
Data
Default setting
Unit
A071
PID selection
00: Disabled
01: Enabled
00
⎯
A072
PID P gain
0.2 to 5.0
1.0
⎯
A073
PID I gain
0.0 to 150.0
1.0
s
A074
PID D gain
0.00 to 100.0
0.0
s
A075
PID scale
0.01 to 99.99
1.00
Time
A076
PID feedback selection
00: OI
01: O
02: RS485 communication
03: Operation function output
00
⎯
A077
Reverse PID function
00: Deviation = Target value -
Feedback value
01: Deviation = Feedback value -
Target value
00
⎯
A078
PID output limit function 0.00 to 100.0
0.0
%
C044
PID deviation excessive
level
0. to 100.
3.0
%
C052
PID FB upper limit
0.0 to 100.0
100
%
C053
PID FB lower limit
0.0
%
Related parameters
d004, A001, A005, C001 to C005, C021, C026
fs
M
=
+
-
Deviation
ε
ε
: Deviation
s
T
s
T
K
d
i
p
1
1
Target value
0 to 10 V
4 to 20 mA
+
·
·
+
Control
value
Feedback
0 to 10 V
4 to 20 mA
Normal control
of the Inverter
Transducer
Sensor
Kp: Proportional gain
Ti: Integral time
Td: Derivative time
s: Operator
Data
Symbol
Function name
Status
Description
23
PID
PID enabled/disabled
ON
Disables the PID function.
OFF
Does not affect the PID function.
Related parameters
C001 to C005
Summary of Contents for JX-A4004
Page 2: ......
Page 16: ...14 About This Manual ...
Page 19: ...Chapter 1 Overview 1 1 Functions 1 2 1 2 Appearance and Names of Parts 1 4 ...
Page 24: ......
Page 25: ...Chapter 2 Design 2 1 Installation 2 2 2 2 Wiring 2 7 ...
Page 79: ...Chapter 4 Functions 4 1 Monitor Mode 4 2 4 2 Function Mode 4 6 ...
Page 174: ...5 8 5 2 Troubleshooting 5 Maintenance Operations ...
Page 175: ...Chapter 6 Inspection and Maintenance 6 1 Inspection and Maintenance 6 2 6 2 Storage 6 8 ...
Page 199: ...Appendix Appendix 1Parameter ListApp 2 Appendix 2Product Life CurveApp 18 ...
Page 217: ...INDEX ...
Page 220: ......