Mitsubishi Electric MELSEC-L LD75D, User Manual

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CHAPTER 9 MAJOR POSITIONING CONTROL
9
9.
2 Set
ting t
he Pos
itioning
D
at
a
(5) Current feed value during speed-position switching control (INC mode)
The following table shows the "[Md.20] Current feed value" during speed-position switching control (INC mode)
corresponding to the "[Pr.21] Current feed value during speed control" settings.
(6) Switching time from speed control to position control
There is 1ms from the time the speed-position switching signal is turned ON to the time the speed-position
switching latch flag ([Md.31] Status: b1) turns ON.
"[Pr.21] Current feed value during speed control" setting [Md.20] Current feed value
0: Do not update current feed value
The current feed value at control start is maintained during speed
control, and updated from the switching to position control.
1: Update current feed value
The current feed value is updated during speed control and position
control.
2: Zero clear current feed value
The current feed value is cleared (set to "0") at control start, and
updated from the switching to position control.
t
0
Updated from 0
t
Speed
t
Position control
Maintained Updated
Speed control Speed Position control
Speed control
Speed Position control Speed control
Updated
(a) Current feed value not updated (b) Current feed value updated
(c) Current feed value zero cleared
Speed-position switching signal
OFF
ON
OFF
ON
1ms
Speed-position switching latch flag