Siemens SINUMERIK 840D sl Function Manual page 838

Oscillation (P5)
Asynchronous oscillation
On switchover from asynchronous oscillation to spark-out and during spark-out, the
response at the reversal point regarding exact stop corresponds to the response determined
by the stop time programmed for the appropriate reversal point. A sparking-out stroke is the
movement towards the other reversal point and back. See table:
Note
Oscillation with motion-synchronous actions and stop times "OST1/OST2"
Once the set stop times have expired, the internal block change is executed during
oscillation (indicated by the new distances to go of the axes). The deactivation function is
checked when the block changes. The deactivation function is defined according to the
control setting for the motional sequence "OSCTRL".
This dynamic response can be influenced by the feed override.
An oscillation stroke may then be executed before the sparking-out strokes are started or the
end position approached.
Although it appears as if the deactivation response has changed, this is not in fact the case.
Table 12- 2
Function
Deactivation at defined reversal
point
Deactivation with specific
number of sparking-out strokes
Deactivation with sparking-out
strokes and defined end position
(optional)
Deactivation without sparking-
out strokes, but with defined end
position (optional)
838
Operational sequence for deactivation of oscillation
Inputs
Number of sparking-out strokes
equals 0,
no end position active
Number of sparking-out strokes
is not equal to 0,
no end position is active
Number of sparking-out strokes
is not equal 0
end position active
Number of sparking-out strokes
is equal 0
end position active
Explanation
The oscillation movement is
stopped at the appropriate
reversal point
After the appropriate reversal
point is reached, the number of
sparking-out strokes specified in
the command are processed.
After appropriate reversal point
is reached, the number of
sparking-out strokes specified in
command are processed,
followed by approach to
specified end position.
After appropriate reversal point
is reached, axis is traversed to
specified end position.
Function Manual, 03/2009, 6FC5397-1BP10-4BA0
Extended Functions