Siemens SINUMERIK 828D Commissioning Manual page 221

Enter the following parameters to carry out a measurement:
● "Measurement": Selection of the two axes that are intended to be measured and selection
of the measurement system. Parked encoders are not displayed for selection.
● "Parameter": The parameter settings in the "Radius" and "Feed" input fields must
correspond to the values from the part program that controls the circular motion of the axes,
taking account of the feed override switch setting.
● "Representation": Parameters for displaying the graphics
– "Resolution" (scaling) of the diagram axes in [mm/scaled]
– "Display" via the mean radius or programmed radius
Perform measurement
Procedure:
1. In the "Commissioning" operating area select the "Optim./test" softkey → "Circularity test"
softkey.
2. Select the axes that are intended to be measured with the <SELECT> key or with the "Axis
+"/"Axis -" softkeys.
3. Set the parameters for the measurement: "Radius" and "Feed"
The "Measurement time" display field shows the measurement time calculated from the
"Radius" and "Feed" values for recording the actual position values during the circular
movement:
If the measurement time is not sufficient then only parts of the circle are portrayed. The
measurement time can be increased by reducing the feed value. This also applies if the
circularity test is started from the stationary condition.
4. Set the parameters for displaying the graphic:
If the measurement time calculated from this exceeds the time range that can be displayed
(maximum measurement time = position controller cycle frequency * 2048), an appropriate
sample time is calculated for recording (n * position controller cycle frequency), so that a
complete circle can be displayed.
Further actions:
● To start the measurement, press the "Start" softkey.
● To stop the measurement, press the "Stop" softkey.
● To make further adjustments for tuning, press the "Tuning" softkey.
● On a new softkey bar, you can navigate directly to the following areas:
– "Service axis" in the "Diagnostics" operating area
– "Axis machine data"
– "Drive machine data"
– "User Views"
● To save the parameters for a measurement, press the "Save parameter" softkey.
● To repeat a measurement with the same parameters, for example, press the "Load
parameter" softkey.
CNC commissioning
Commissioning Manual, 10/2015, 6FC5397-3DP40-5BA3
Tuning
6.6 Circularity test
207