Mitsubishi Electric RD77MS2 User Manual page 131

Current feed value
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
0: Do not update current feed value
1: Update current feed value
2: Zero clear current feed value
Position
V
control control
Current feed
Updated Maintained
value
(a) Current feed value not updated
Switching time from position control to speed control
It takes 1 ms 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.
OFF
Position-speed switching
signal
OFF
Position-speed switching
latch flag
Speed Position
V
control
t
Current feed
value
(b) Current feed value updated
ON
ON
1 ms
[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 position control, and the current feed
value is cleared (to "0") as soon as position control is switched to speed
control.
Speed
control
t
Current feed
Updated
value
3 MAJOR POSITIONING CONTROL
Position Speed
V
control control
Updated 0
(c) Current feed value zero cleared
3.2 Setting the Positioning Data
3
t
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