
B-63323EN-1/03 7.FEEDRATE CONTROL/ACCELERATION AND DECELERATION CONTROL
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7.1.10 Feed Stop Function
Overview
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.
Parameter
1832 Feed-stop position deviation for each axis
[Input type] Parameter input
[Data type] Integeraxis
[Unit of data] detection unit
[Valid data range] 0 - 99999999
Specify the feed-stop position deviation for each axis. If the
positioning deviation of an axis while it is moving exceeds the feed-
stop position deviation for the axis, pulse distribution and
acceleration/deceleration control are temporarily stopped. When
the positioning deviation becomes less than the feed-stop position
deviation, pulse distribution and acceleration/deceleration control
are restarted.
The feed-stop function is mainly used for decreasing overshoot
when a large servo motor is accelerated or decelerated.
Generally, specify the intermediate value between the positioning
deviation limit while the tool moving and the positioning deviation
limit for the axis in the rapid traverse mode as the feed-stop
position deviation.
Speed
Time
Feed stop
Specified speed
Actual speed