Inovance MD500-PLUS Series - 3.6.10 PID Closed-Loop Adjustment

Function Application
‑636‑
Para.
No.
Name Default
Value Range Description
FA‑18
PID parameter
switchover
condition
0
0: No switchover
1: Switchover by DI
2: Automatic
switchover based on
deviation
3: Switchover based on
running frequency
6: Automatic
adjustment based on
roll diameter
7: Adjustment based on
percentage of max. roll
diameter
Used for switchover between two groups of PID
parameters.
0: No switchover
Switchover is disabled.
1: Switchover by DI
Assign the DI terminal with function 43 (PID parameter
switchover). When this terminal is disabled, parameter
group 1 (FA‑05 to FA‑07) is used. When this terminal is
enabled, parameter group 2 (FA‑15 to FA‑17) is used.
2: Automatic switchover based on deviation
When the absolute value of the deviation between the
reference and feedback values is less than FA‑19 (PID
parameter switchover deviation 1), parameter group 1
is used for PID control. When the absolute value of the
deviation between the reference and feedback values
is greater than FA‑20 (PID parameter switchover
deviation 2), parameter group 2 is used for PID
control. When the absolute value of the deviation
between the reference and feedback values is
between FA‑19 and FA‑20, the linear interpolated
values of the two groups of PID parameters are used.
3: Switchover based on running frequency
Auto switchover is implemented based on the running
frequency of the AC drive.
6: Automatic adjustment based on roll diameter
In this automatic switchover mode, when the current
roll diameter changes between the maximum roll
diameter (B0‑08) and minimum roll diameter (B0‑09),
the linear interpolated values of the two groups of PID
parameters are used. The minimum roll diameter
corresponds to the first group of parameters (FA‑05 to
FA‑07), and the maximum roll diameter corresponds
to the second group of parameters (FA‑15 to FA‑17).
7: Adjustment based on percentage of max. roll
diameter
In this automatic switchover mode, when the current
roll diameter changes between the result of the
maximum roll diameter (B0‑08) multiplied by FA‑20
and the result of the maximum roll diameter (B0‑08)
multiplied by FA‑19, the linear interpolated values of
the two groups of PID parameters are used.