Pid Function; Pid Enable/Disable; Basic Structure Of Pid Control (Example) - Omron JX User Manual

4-2 Function Mode

PID Function

This function enables process control of such elements as flow rate, air volume, and pressure.
Parameter No.
A071
A072
A073
A074
A075
4
A076
A077
A078
C044
C052
C053
Related parameters
•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)

Target value
0 to 10 V
4 to 20 mA

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.
Data
23
Related parameters
4-22
Function name
00: Disabled
PID selection
01: Enabled
PID P gain 0.2 to 5.0
PID I gain 0.0 to 150.0
PID D gain 0.00 to 100.0
PID scale 0.01 to 99.99
00: OI
01: O
PID feedback selection
02: RS485 communication
03: Operation function output
00: Deviation = Target value -
Reverse PID function
01: Deviation = Feedback value -
PID output limit function 0.00 to 100.0
PID deviation excessive
0. to 100.
level
PID FB upper limit
0.0 to 100.0
PID FB lower limit
Deviation ε
+ 1
K 1 + + T · s
p d
T · s
-
i
Feedback 0 to 10 V
4 to 20 mA
Kp: Proportional gain Ti: Integral time
Symbol Function name
PID PID enabled/disabled
Data
Feedback value
Target value
d004, A001, A005, C001 to C005, C021, C026
Control
value
Normal control
M
of the Inverter
fs
Td: Derivative time
Status
ON Disables the PID function.
OFF Does not affect the PID function.
C001 to C005
Default setting Unit
00
1.0
1.0
0.0
1.00 Time
00
00
0.0
3.0
100
0.0
Sensor
=
Transducer
ε: Deviation
s: Operator
Description
⎯
⎯
s
s
⎯
⎯
%
%
%
%