5.Description of Function Codes
EM15 User's Manual
80
C0-10
Integral time TI2
Default
2.00s
Setting Range
0.01s~10.00s
C0-11
Differential time TD2
Default
0.000s
Setting Range
0.000s~10.000s
C0-12
PID parameter switchover condition
Default
0
Setting
Range
0
No switchover
1
Switchover via DI
2
Automatic switchover based on deviation
C0-13
PID parameter switchover deviation 1
Default
20.0%
Setting Range
0.0% ~ C0-14
C0-14
PID parameter switchover deviation 2
Default
80.0%
Setting Range
C0-13 ~ 100.0%
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 C0-09 ~
C0-11 are set in the same way as C0-06 ~ C0-08.
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 set with function 43 "PID parameter switchover". If the
DI is OFF, group 1 (C0-06 ~ C0-08) is selected. If the DI is ON, group 2 (C0-09 to C0-11) 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 C0-13, group 1 is selected. When the absolute value of the deviation between
PID feedback and PID setting is higher than the value of C0-14, group 2 is selected. When the deviation is
between C0-13 and C0-14, the PID parameters are the linear interpolated value of the two groups of parameter
values.
Diagram 5-26 PID parameters switchover
C0-15
PID integral property
Default
00
Setting
Range
Unit's digit: Integral separated.
0
Invalid
1
Valid
Ten's digit: Whether to stop integral operation when the output reaches the limit.
0
Continue integral operation
1
Stop integral operation
⚫
Integral separation
If integral separation is set to valid, and the DI is defined as function 22"PID integral pause". In this case, only
