Axis Velocity Matching - Siemens SINUMERIK 840Di sl Commissioning Manual
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Machine data
Table 11-34 Drift compensation: Machine data
Number
Name
Axisspecific ($MA_ ... )
36720
DRIFT_VALUE
11.5.17
Axis velocity matching
Max. axis velocity
The value entered in the following machine data is the limit velocity up to which a machine
axis can accelerate (rapid traverse limiting).
● MD32000 $MA_MAX_AX_VELO[n] (max. axis velocity)
It depends on the machine and drive dynamics and the limit frequency of actual-value
acquisition.
The max. axis velocity is used for traversing in the part program when rapid traverse (G00) is
programmed.
Depending on MD30300 $MA_IS_ROT_AX[n], the maximum linear or rotary axis velocity
must be entered in the machine data.
Rapid traverse in JOG mode
the value entered in the following machine data is the velocity at which the machine axis
traverses in JOG mode with the rapid traverse override key actuated and with an axial
feedrate override of 100%.
● MD32010 $MA_JOG_VELO_RAPID[n] (rapid traverse in JOG mode)
● MD32040 $MA_JOG_REV_VELO_RAPID[n] (revolutional feedrate in JOG mode with
The entered value may not exceed the max. permissible axis velocity.
This machine data will not be used for the programmed rapid traverse G00.
Axis velocity in JOG mode
The value entered in this machine data is the velocity at which the machine axis traverses in
JOG mode with an axial feedrate override of 100%:
● MD32020 $MA_JOG_VELO[n] (axis velocity in JOG mode)
● MD32050 $MA_JOG_REV_VELO[n] (revolutional feedrate in JOG mode)
Manual
Commissioning Manual, 05/2008, 6FC5397–4CP10–4BA0
or
rapid traverse override)
or
NC Commissioning with HMI Advanced
Name/remarks
Basic drift value
11.5 Axes and spindles
421
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