
B–63173EN–1/01
7. FEEDRATE CONTROL/ACCELERATION
AND DECELERATION CONTROL
262
During axis motion, the feed stop function checks a position deviation
amount at all times. When the amount exceeds the “feed stop position
deviation amount” set by the parameter (No. 1832), the function suspends
pulse distribution and acceleration/deceleration control during such a
period of time, and terminates the move command for the positioning
control circuit. Thus the function can minimize an overshoot that may
occur with a large servo motor in rapid traverse acceleration operation.
Speed
Time
Feed stop
Specified speed
Actual speed
1832 Feed stop positioning deviation for each axis
[Data type] Two–word axis
[Unit of data] Detection unit
[Valid data range] 0 to 99999999
Set the feed stop positioning deviation for each axis.
If the positioning deviation exceeds the feed stop positioning deviation
during movement, pulse distribution and acceleration/deceleration
control are stopped temporarily. When the positioning deviation drops to
the feed stop positioning deviation or below, pulse distribution and
acceleration/deceleration control are resumed.
The feed stop function is used to reduce overshoot in acceleration/decel-
eration mainly by large servo motor.
Generally, set the middle value between the positioning deviation limit
during movement and the positioning deviation at rapid traverse as the
feed stop positioning deviation.
7.1.6
Feed Stop Function
General
Parameter