Friction Compensation - Manual Tuning - Siemens SINUMERIK 840D sl Commissioning Manual

Procedure:
1. The radius and the feedrate for the measurements are preset in the following channel
setting data and apply for all axes in the channel.
2. Press the "Start" softkey to start measurements. A part program is then automatically
generated; this is done by calling CYCLE790 which reverses the axis with the preset
feedrate. Before the part program is started, a check is made as to whether the entered
feedrates can be achieved based on the dynamic response of the axis. If feedrates are
selected to be too high, a message is output that the feedrates should be reduced.
3. If the entered feedrates have been successfully tested and found to be OK, the part program
is opened in order to add additional program instructions. Confirm with "OK" to close the
window and continue.
On completion of the tuning of an axis in the channel, the compensation values are saved in the
axis machine data and the status display is updated. The next axis is then automatically tuned
in this channel.
Note
Gantry axis grouping
For a gantry axis grouping, only the guide axis is displayed. On completion of the tuning, the
compensation values of the guide axis are copied to the synchronous axes.
⇒ Further actions:
● "Start" softkey to start tuning.
● "Graphic" softkey to change to the graphic display.
● "Data list" softkey to switch to the list of axis machine data and channel setting data.
● "Cancel" softkey to cancel tuning.
8.4.3

Friction compensation - manual tuning

Operation on the SINUMERIK Operate
With this function, you can optionally traverse one or two axes. The measurement is graphically
displayed as circle diagram. The values entered for the friction compensation only apply to the
axis which is selected in the header line.
The scaling in the graphic display is adapted automatically as long as a scaling value is not
entered manually. Up to nine measurements with different feedrates can be performed in one
pass. With 1-axis and 2-axis traversing, the upper and the lower reversal points are relevant for
CNC Commissioning: NC, PLC, Drive
Commissioning Manual, 12/2019, A5E48312804B AA
Designation
Radius (linear axis)
Radius (rotary axis)
Feedrate (linear axis)
Feedrate (rotary axis)
8.4 Friction compensation with adaptive characteristics
Unit Machine data
mm SD55820 $SCS_FRICT_OPT_RADIUS
° (degrees) SD55821 $SCS_FRICT_OPT_RADIUS_ROT
[mm/min] SD55822 $SCS_FRICT_OPT_FEED[0...8]
[°/min] SD55823 $SCS_FRICT_OPT_FEED_ROT[0...8]
NC commissioning
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