Siemens SINUMERIK 840D Function Manual

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12.2.15 Jerk during programmed rapid traverse (G00) (axis-specific)12.2.15.1 General InformationOverviewFrequently, the maximum jerk for the machine axes involved in the machining process must beset lower than the machine's performance capability officially allows because of thesupplementary conditions associated with the specific process concerned.For time-optimized traversing of the machine axes with programmed rapid traverse (part-program instruction G00), a specific maximum value can be programmed for the axis-specificjerk.JOG setup modeThis function does not affect jerk in respect of a rapid traverse override in JOG setup mode.12.2.15.2 ParameterizationThe maximum value for axis-specific jerk with programmed rapid traverse is parameterized(G00) using the axis-specific machine data:MD32434 $MA_G00_ACCEL_FACTOR(scaling of the acceleration limitation with G00)This is used to generate the maximum value for axis-specific jerk with programmed rapidtraverse (G00) that is taken into account by the path planning component during preprocessing:Jerk[axis] =MD32431 $MA_MAX_AX_JERK * MD32435 $MA_G00_JERK_FACTOR12.2.16 Excessive jerk for block transitions without constant curvature (axis-specific)12.2.16.1 General InformationOverviewIn the case of block transitions without constant curvature (e.g. straight line > circle), theprogrammable controller has to decelerate movement of the geometry axes significantly inorder to ensure compliance with the parameterized axis dynamics. For the purpose of reducing/avoiding deceleration in connection with block transitions without constant curvature, a higherlevel of axis-specific jerk can be enabled.The excessive jerk is parameterized using a dedicated axis-specific maximum value.B2: Acceleration and jerk12.2 FunctionsAxes and spindlesFunction Manual, 06/2019, A5E47437747B AA 371