HV580L Series Frequency Inverter
152
Group PA: Process Control 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.
Figure 6-25 Principle block diagram of PID control
PA-00
PID setting source
Default
0
Setting Range
0
PA-01 Setting
1
VS
2
AS
3
VS2
4
PULSE Pulse (X5)
5
Communication
6
Multi-reference
PA-01
PID digital setting
Default
50.0%
Setting range
0.0%
～
100.0%
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%. The PID feedback is also a relative value.
The purpose of PID control is to make the PID setting and PID feedback equal.
