Mitsubishi Electric FR-F820-00046, Instruction Manual

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Parameters (A) Application parameters
FR-F800 5 - 357
●
PD action
PD action is a combination of proportional action (P) and differential action (D), and applies a manip-
ulated amount according to the speed of the deviation to improve excessive characteristics.
●
PID action
PID action is a combination of PI and PD action, which enables control that incorporates the respec-
tive strengths of these actions.
Fig. 5-162:
Operation example for proportional changes of
measured value
I002687E
NOTE PD action is the result of P and D actions being added together.
Fig. 5-163:
Operation example for proportional changes of
measured value
I002688E
NOTE PID action is the result of all P, I and D actions being added together.
Time
Time
Time
PD action
D action
P action
Set point
Measured value
Deviation
Time
Time
Time
Time
Deviation
Set point
P action
Measured value
I action
PID action
D action