Mitsubishi Electric QD77MS User Manual page 575

0: Do not update current feed value
1: Update current feed value
2: Zero clear current feed value
V
Position control
Current
Updated
feed value
(a) Current feed value not updated
Position-speed switching signal
Position-speed switching latch flag
Current feed value during position-speed switching control
The following table shows the "[Md.20] Current feed value" during position-speed
switching control corresponding to the "[Pr.21] Current feed value during speed
control" settings.
"[Pr.21] Current feed value during
speed control" setting
Speed control
t
Current
Maintained
feed value
(b) Current feed value updated
Switching time from position control to speed control
There is 1ms from the time the position-speed switching signal is turned ON to the
time the position-speed switching latch flag ([Md.31] Status: b5) turns ON.
The current feed value is updated during position control,
and the current feed value at the time of switching is
maintained as soon as position control is switched to
speed control.
The current feed value is updated during position control
and speed control.
The current feed value is updated during position control,
and the current feed value is cleared (to "0") as soon as
position control is switched to speed control.
V
Position control Speed control
Updated
ON
OFF
OFF
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Chapter 9 Major Positioning Control
[Md.20] Current feed value
V
Position control
t
Current
Updated
feed value
(c) Current feed value zero cleared
ON
1ms
Speed control
t
0