Sinee EM500 - PID Parameter Options

EM500 Open-Loop Vector Control Inverter User Manual
249
To meet different complicated applications, the process PID module has introduced
two groups of PID parameters. Parameters can be switched between these two groups
through the function setting of F09.11 and the input conditions (input function “43: PID
Parameter Switching”, offset e (k), etc.) and performed for linear interpolation. See Table
7-13 for details
Table 7-13 PID Parameter Options
Mode
Description
F09.11
Other Conditions
0
--
Not Switching of PID Parameter, the first group of
parameters work
1
43: PID Parameter
Switch
PID parameter is switched by the numeric input
terminal (43: PID Parameter Switch)
0
Invalid switching, the first group of parameters work
1
Invalid switching, the second group of parameters
work
2
|e (k)| - F09.12/13
Automatic Switching by Offset
|e (k)|< F09.12
The first group of parameters
|e (k)|> F09.13
The first group of parameters
Intermediate Value
Two groups of parameters are taken as the reference
for linear interpolation according to the offset
As listed in the table above, when the function code F09.11 is set as 0, PID
parameters will not be switched and the first group of parameters works; when the
function code is set as 1, PID parameters will be switched according to the input function
“43: PID Parameter Switching”; when the function code is set as 2, PID parameters will
be selected or operated by linear interpolation according to the relationship between the
absolute value of present offset e(k) (=|Setting - Feedback|) and the function codes
F09.12 and F09.13.
When F09.12≤|e(k)|≤F09.13, present PID parameter is obtained through the linear
interpolation of parameters of the first group and the second group. See 7-28 median
section for specific principles.