Mitsubishi Electric MELSEC iQ-R Series User Manual page 110

Feed current value
The following table shows "[Md.20] Feed current value" during speed-position switching control (INC mode) corresponding to
the "[Pr.21] Feed current value during speed control" settings.
"[Pr.21] Feed current value during speed control" setting
0: Do not update feed current value
1: Update feed current value
2: Zero clear feed current value
Speed
V
control
Feed current
Maintained
value
(a) Feed current value not updated
Switching time from speed control to position control
It takes 1 ms 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.
Speed-position
switching signal
Speed-position
switching latch flag
3 MAJOR POSITIONING CONTROL
108
3.2 Setting the Positioning Data
Downloaded from ManualsNet.com
Position
control
t
Feed current
Updated
value
ON
OFF
ON
OFF
1 ms
search engine
[Md.20] Feed current value
The feed current value at control start is maintained during speed control, and
updated from the switching to position control.
The feed current value is updated during speed control and position control.
The feed current value is cleared (set to "0") at control start, and updated from
the switching to position control.
Speed Position
V
control control
Updated
(b) Feed current value updated
Position
Speed
V
control control
t
Feed current
0 Updated from 0
value
(c) Feed current value zero cleared
t