SV600 Series User Manual 7 Parameter Description
137
Group PA: PID function
PID control is a general process control method. By performing proportional, integral and
differential operations on the difference between the feedback signal and the target signal, it
adjusts the output frequency and constitutes a feedback system to stabilize the controlled
counter around the target value.
It is applied to process control such as flow control, pressure control and temperature control.
The following figure shows the principle block diagram of PID control.
Fig.7-26 PID process control
Function
code
Name
Setting range
Default
Property
PA-00
PID setting source
0: Set by PA-01
1: AI1
2: AI2
3:Potentiometer on keyboard
4: PULSEsetting (HDI)
5: Communication setting
6: Multi-segment instruction
0
☆
PA-01
PID digital setting
0.0% ~ 100.0%
50.0%
☆
PA-00 is used to select the channel of target process PID setting. The PID setting is a relative
value and ranges from 0.0% to 100.0%.
Function
code
Name
Setting range
Default
Property
PA-02
PID feedback source
0: AI1
1: AI2
2: Reserved
3: AI1-AI2
4: PULSE setting (HDI)
5: Communication setting
6: AI1+AI2
7: MAX (|AI1|, |AI2|)
8: MIN (|AI1|, |AI2|)
0
☆
PA-02 is used to select the feedback signal channel of process PID. The PID feedback is a
relative value and ranges from 0.0% to 100.0%.