Mitsubishi QD75P1N User Manual page 422

9 MAJOR POSITIONING CONTROL
Position control Speed control
Speed
Updated Maintained
(a) Current feed value not updated
Current feed value during position-speed switching control
The following table shows the "
switching control corresponding to the "
control" settings.
" Pr.21
Current feed value during
speed control" setting
0: Do not update current feed value
1: Update current feed value
2: Zero clear current feed value
Position control
Speed
t
(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 (
Position-speed switching signal
Position-speed switching latch flag
Md.20
Current feed value" during position-speed
Pr.21
Md.20 Current feed value
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 positioning
control, and the current feed value is cleared (to "0") as
soon as position control is switched to speed control.
Speed control
t
Updated
Md.31
ON
OFF
OFF
1ms
9 - 106
MELSEC-Q
Current feed value during speed
Position control Speed control
Speed
0
Updated
(c) Current feed value zero cleared
Status: b5) turns ON.
ON
t