HNC Electric HV480 Series, Руководство пользователя

Страница: 110 / 179

106
FA Group process control PID function
PID control is a common method of process control. By performing proportional, integral and differential
operations on the difference between the feedback signal of the controlled quantity and the target signal, and
adjusting the output frequency of the frequency inverter, a closed loop system is formed to stabilize the controlled
quantity at the target value.
Suitable for flow control, pressure control, temperature control and other process control occasions. Figure 5 -
27 is the control principle block diagram of process PID.
Figure 5 - 27 process PID principle block diagram
FA - 00 PID given channel selection 0
～
6
【
0
】
0: FA - 01 setting.
1
：
AI1.
2
：
AI2
3
：
AI3
4: X5 pulse setting
5: communication settings.
6: multi-speed setting.
7: FA-01 setting (up/down can be changed)
FA - 01 PID digital setting 0.0%
～
100.0%
【
50.0%
】
The setting target amount of the process PID is a relative value, and the setting range is 0.0 % - 100.0 %.
Similarly, the feedback quantity of PID is also a relative quantity, and the function of PID is to make these two relative
quantities the same.
FA - 02 PID feedback channel selection 0
～
8
【
0
】
0
：
AI1
。
1
：
AI2
2
：
AI3
3
：
AI1-AI2
4: X5 pulse quantity
5: communication.
6
：
AI1+AI2
7
：
MAX (|AI1|, |AI2|)
Feedback quantity
FA-02
Integral and
differential
action
FA-06/FA-07
Kp effect
FA - 05
PIDpositive
and negative
FA - 03
Deviation limit
FA-09
Closed loop feedback quantity
Closed loop
output
Given quantity
FA-00/FA-01