Description of Function Codes PE6000 User Manual
154
Function
Code
Parameter Name
Setting Range
Default
PA-15
Proportional gain Kp2
0.0–100.0
20.0
PA-16
Integral time Ti2
0.01–10.00s
2.00s
PA-17
Differential time Td2
0.000–10.000s
0.000s
PA-18
PID parameter switchover
condition
0: No switchover
1: Switchover via DI
2: Automatic switchover based
on deviation
0
PA-19
PID parameter switchover
deviation 1
0.0% to PA-20
20.0%
PA-20
PID parameter switchover
deviation 2
PA-19 to 100.0%
80.0%
In some applications, PID parameters switchover is required when one group of PID
parameters cannot satisfy the requirement of the whole running process. These parameters are
used for switchover between two groups of PID parameters.
Regulator parameters PA-15 to PA-17 are set in the same way as PA-05 to PA-07.
The switchover can be implemented either via a DI terminal or automatically implemented based
on the deviation.
If you select switchover via a DI terminal, the DI must be allocated with function 43 "PID
parameter switchover". If the DI is OFF, group 1 (PA-05 to PA-07) is selected. If the DI is ON, group
2 (PA-15 to PA-17) is selected.
If you select automatic switchover, when the absolute value of the deviation between PID
feedback and PID setting is smaller than the value of PA-19, group 1 is selected. When the
absolute value of the deviation between PID feedback and PID setting is higher than the value of
PA-20, group 2 is selected. When the deviation is between PA-19 and PA-20, the PID parameters
are the linear interpolated value of the two groups of parameter values.
Figure 5-2 PID parameters switchover
PI parameters
Group 1 of PID
parameters
Group 2 of PID
parameters
PID deviation