5.13 The Control Loop
331
Tolerance for
corners and arcs
A distinction is made between corners and arcs when estimating the filter
error. Therefore, the tolerance at corners (MP_pathTolerance effective) and on
arcs (MP_curveTolFactor * MP_pathTolerance effective) can be set sepa-
rately. This results in different maximum velocities.
If, based on the contour geometry, a progression of straight lines is recognized
as an arc, the tolerance from MP_pathTolerance is multiplied by the value in
MP_curveTolFactor. This enables the velocity to be increased (with lower con-
tour accuracy) on curved contours, but not at corners.
Curvature changes cause a jerk resulting in a reduction of speed. If the value
in MP_curveJerkFactor does not equal 0, the reduced speed is multiplied by
this value.
For example, if oscillations occur on the workpiece at line-to-arc transitions,
the speed can be reduced by MP_curveJerkFactor <1.
MP_curveTolFactor and MP_curveJerkFactor are evaluated for smoothing the
contour. Function of the filters.
MP_curveTolFactor
Factor for path tolerance on arcs
Format:
Numeric value
Input:
0.5 to 100.000 000 000]
Default:
1]]
MP_curveJerkFactor
Factor for feed rate reduction at curvature changes
Format:
Numeric value
Input:
0 to 100.000 000 000]
0: No further feed rate reduction
Default:
1]]
Settings in the configuration editor:
NCchannel
channelSettings
Key for channel
CfgLaPath
curveTolFactor
curveJerkFactor
Summary of Contents for MILLPWR G2
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Page 60: ...60 ACU RITE Technical Manual MILLPWRG2 TS 220 Adapter cable for TS 120 TS 220 ...
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