Watt Drive V3000-015HF, Руководство пользователя

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Explanation of Function
Seite 82 / 180
[3] D action This is the action that the manipulated variable is in proportion to the changing rate of
command.
(4) The adjustment of gain
Please adjust each gain according to the state as the following, when the response on the functional
operation PID is not stable.
Inspite of changing command, the change of feedback signal is slow. Raise P gain.
The feedback signal changes instantly but is not stable. Lower P gain.
The command and feedback signal doesn’t coincide instantly. Lower I gain.
The feedback signal oscillates and is not stable. Raise I gain.
In spite of raising of P gain, the response is slow. Raise D gain.
When P gain is raised, the feedback signal oscillates and is not stable. Lower D gain.
(5) The Maximum PID Deviation Level/Output
It is possible to establish the maximum deviation level C044 on PID control. When the PID deviation
amount reaches the set level C044, it is possible to set an intelligent output.
C044 can be set from 0 to 100 and corresponds with the command; from 0 to maximum.
Assign 04 (OD) to intelligent output terminal 11, 12(C021, C022).
(6) Feedback monitor of PID
Feedback signal of PID can be monitored.
The monitor value can be displayed by the product of PID scale A075.
“Monitor display” = “Feedback (%)” x “A075 setting”
(7) PID integral reset
This is the function to clear integral value of PID action.
Assign 24(PIDC) to intelligent input terminal.
It is cleared whenever PIDC is turned ON.
Don’t turn absolutely ON PID terminal during PID action, because there is a possibility of overcurrent
trip.
Turn ON PIDC terminal after turning OFF PID action.
Set value
Manipulated
variable
Larger
Smaller
Larger
Smaller
A074
A074
PI action combines above [1] and [2], PD action does [1] and [3], PID action does [1], [2] and [3].