HEIDENHAIN IK 5394-3D - Manual (Page 532)

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Chapter 6 System Setup
Specifying normal and fine velocities
Normal velocity is generally used to
move between probed points. Fine ve-
locity is generally used to probe points.
The normal and fine velocities of each
axis are expressed as percentages of the
maximum veolcities specified in indi-
vidual Tools/CNC/Axis set up screens.
Normal velocities are usually set as high as the manual joystick control of each
axis will permit. The fine velocities are usually set to optimum probing veloci-
ties for touch probes (approximately 5 mm per second).
Enter the desired percentages directly into the Normal and Fine data fields of
each axis The default percentages are 100% for normal velocities, and 30% for
fine velocities.
Specifying the axis motion profile
The joystick control of axis motion can be linear, exponential or a mixture.
Linear control causes the axis velocity to increase in direct proportion to joystick
displacement. Exponential control causes little or no axis motion in response to
early joystick displacements, but quickly increases the axis velocity toward the
extreme end of joystick displacement.
Exponential control is useful when very small and precise motions are required
at low velocities. The Expo % field is used to specify the amount of exponential
control for each axis. This range can extend from 0% (linear control) to 100%
(exponential control) as shown by the graph below.
Enter the desired value into the Expo % field for each axis. The default values
are 1% for each axis and provides nearly linear response.
Axis vAxis vAxis vAxis vAxis v
elocityelocityelocityelocityelocity
JJJJJo oo ooystick displacement ystick displacement ystick displacement ystick displacement ystick displacement