Chapter 6 PA Process control PID
113
PA-12
PID feedback filter time
0.00
～
60.00s
Default
：
0.00s
PA-13
PID output filtering time
0.00
～
60.00s
Default
：
0.00s
PA-12 is used to filter the amount of PID feedback. This filtering helps to reduce the influence of
feedback on the feedback, but it will bring the response performance of the process closed-loop
system.
PA-13 is used to filter the PID output frequency, which will attenuate the sudden change of the
inverter output frequency, but it will also bring the response performance of the process closed-loop
system.
PA-15
Proportional gain Kp2
0.0
～
100.0
Default
：
20.0
PA-16
Integration time Ti2
0.01s
～
10.00s
Default
：
2.00s
PA-17
Derivative time Td2
0.000s
～
10.000s
Default
：
0.000s
PA-18
PID parameter
switching condition
0: Do not switch 1: Switch through the
input terminal
2: Automatic switching according to
deviation
Default
：
0
PA-19
PID parameter
switching deviation 1 0.0%
～
PA-20
Default
：
20.0%
PA-20
PID parameter
switching deviation 2 PA-19
～
100.0%
Default
：
80.0%
In some applications, a set of PID parameters cannot meet the requirements of the
entire running process, and different PID parameters need to be used in different situations.
This set of function codes is used for switching between two sets of PID parameters. The
setting of the regulator parameters PA-15~PA-17 is similar to the parameters PA-05~PA-07.
The two sets of PID parameters can be switched by the multi-function X terminal, or can
be automatically switched according to the deviation of the PID.
When the multi-function X terminal is selected for switching, the multi-function terminal
function selection should be set to 43 (PID parameter switching terminal). When the terminal
is invalid, select parameter group 1 (PA-05~PA-07). When the terminal is valid, select the
parameter group. 2 (PA-15~PA-17).
When automatic switching is selected, the absolute value of the deviation between the
given and feedback is less than the PID parameter switching deviation 1 PA-19, and the PID
parameter selects parameter group 1. When the absolute value of the deviation between the
given and the feedback is greater than the PID switching deviation 2 PA-20, the PID
parameter selection selects parameter group 2. When the deviation between the given and
feedback is between the switching deviation 1 and the switching deviation 2, the PID
parameter is the linear interpolation value of the two sets of PID parameters, as shown in
Figure 6-26.
