830 HEIDENHAIN Technical Manual MANUALplus 620
MP_maxPathYank
Maximum yank on the path (dj/dt)
Available from NCK software version: 597 110-01.
Format: Numerical value
Input: 0.000 000 000 to 1 000 000 [mm/s4]
Default: 4 000 [mm/s4]
Access: LEVEL3
Reaction: RUN
Limiting the yank is not suitable for smoothing successive acceleration and
deceleration processes ("pumping" of feed rate). Reduce the path jerk
(MP_axTransJerk) instead. The use of a stretch filter (CfgStretchFilter) and
feed-rate smoothing filter (MP_filterFeedTime) might also be helpful.
Feed-rate "pumping" often occurs in poor-quality CAM-generated programs
that carry noise. Therefore check whether the CAM program is the cause
of the problem and read it out again if necessary.
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