[Setting procedure of PID control]
・
(When parameter P124 ="0", PID control will not be selected.)
1. PID control select
・
・
Example: 4m
=
0%, 20mA
=
100%
2. Measured value (PV) setting
20
(
mA
)
(
%
)
100
4
0
0
Measured value
(PV)
・
(Note)
・
Relationship between setting signal and setting value
(SP) is set with parameters P102 -104 (Bias/gain function
select, Bias frequency setting and Gain frequency setting).
Example: 0V
=
0%, 5V
=
100%
3. Setting value (SP) setting
5
(
V
)
(
%
)
100
0
0
Setting value
(SP)
4. PID operation mode select
・
PID operation mode is selected with parameter P106 (PID control mode)
5. Proportional gain (Kp), integral time (Ti), derivative time (Td) and control cycle (Ts) settings
・
Parameters (Kp, Ti, Td) used in PID control are set to parameters P107~109.
* Automatic tuning function can be used to adjust parameters (Kp, Ti, Td) automatically and
change the setting value.
・
Cycle (Ts) applying PID control is set to parameter P110.
* Lower/upper frequency clamp of output frequency are set with parameters P099 and P100.
116
"P125: Analog input signal select 2" is set to signal
specifications of detector.
"P124: Analog input function select 2" is set to "1".
Relationship between detector signal and measured
value (PV) is set with "P126: Bias frequency setting
2" and "P127: Gain frequency 2" .
Setting signal of setting value (SP) is set with parameter
P004 (frequency setting signal).
When parameter P004 ="1" or "7", setting value
(SP) is set with parameter P111 (PID target
value).