Siemens SINUMERIK 840D sl Commissioning Manual page 241

5. The first step with the first feedrate of the measurement series is selected. Enter the friction
compensation values in the following entry fields:
For both traversing directions, as default setting, the same compensation values are
entered. By selecting the option "Set reversal points separately", you can enter different
compensation values for an axis, depending on the particular traversing direction.
6. Press the "Next step" softkey to start a new measurement with the next feedrate and enter
new values. If the measurement is repeated, the values appropriate for the feedrate from the
last measurement are proposed.
After the last step, the measuring series is terminated with "OK" and the data is saved.
Note
Incremental value change
Use the following shortcut keys to change the compensation values incrementally:
● The selected entry field is activated with the <INSERT> key, and the color changes.
● The values are changed with different increments with the <Page Up> / <Page Down> keys
and the ↑↓ cursor keys.
● End the input with the <INPUT> key.
⇒ Further actions:
● "Axis +" or "Axis -" softkey to select the axis for which the friction compensation is activated.
● "Start" softkey to start the measurement.
● "Next step" softkey to select the next feedrate.
CNC Commissioning: NC, PLC, Drive
Commissioning Manual, 12/2019, A5E48312804B AA
Input field Unit
Amplitude [mm/min]
or [°/min]
Decay time [s]
Active time [s]
8.4 Friction compensation with adaptive characteristics
Machine data
MD32571 $MA_FRICT_VELO_STEP
MD32574 $MA_FRICT_V_PULSE_DECAY_TIME
MD32573 $MA_FRICT_V_PULSE_CONST_TIME
NC commissioning
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