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N700 Operating Instructions and Parts Manual
11. Explanation of C-Group
130
(1) Feedback
selection
①
Select the terminal for using a feedback signal in C027.
②
Set the set frequency command selection with F001. (In should not be the same as the
terminals selected with C027). Or when the control terminal 01 is set with F010, the
setting of AT selection I049 is invalid.
(2) Basis operation of PID control
Fig. 11- 6 Basic block diagram of PID control
(3) Components
of
PID
①
P action: This is the action that the manipulated variable is in proportion to the command.
Fig. 11- 7 Components of PID (P action)
②
I action: This is the action that the manipulated variable increases with time in a straight
lime.
Fig. 11- 8 Components of PID (I action)
③
D action: This is the action that the manipulated variable in proportion to the changing rate
of command.
Fig. 11- 9 Components of PID (D action)
PI action combines above
①
and
②
, PD action does
①
and
③
, PID action does
①
,
②
,
and
③
.
Ex) F010=1, C027=1 ; F001 works by
an terminal OI.
F010=1, C027=0 ; F001 works by
an terminal O.