Siemens SINUMERIK 840C Installation Instructions Manual page 663

9 Drive Servo Start-Up Application (as from SW 3)
9.5.2 Circularity test (option – SW 4)
Explanation The following service data are output cyclically in the above display:
S
S
S
S
Note The characteristic for the quadrant error compensation function in use to date
can be determined directly on the basis of the quantities acceleration and com-
pensation amplitude. Using the quadrant error (error criterion) as a basis, the set-
ting can be assessed (this value should be as low as possible).
SW 4
Display
You can call the graphic representation of the circularity test by means of this
softkey.
Fig. 9.18
Explanation This display shows the measured characteristic of the two axis position actual
values in the form of a circle with the resolution selected by the user. The mean
radius (or the programmed radius), the programmed feedrate and the circle mea-
surement time derived from these values are then displayed for documentation
purposes (i.e. for subsequent storage of the measured circle characteristic as a
file).
In order to accentuate the transitions on the quadrants, for example, the user can
set a finer scale for the diagram axes in the input field/selection with position
frame to the right. Softkey Display must then be selected again in order to dis-
play the entire circle diagram with the new resolution setting.
9–42
The following service data are output cyclically in the above display:
The axial acceleration at the instant of the last speed zero crossing
The compensation amplitude on the last speed zero crossing
The axis quadrant error (error criterion) of the neuronal QEC in cases where
an error measuring time is parameterized (see section "Further optimization
and intervention options").
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09.95
SINUMERIK 840C (IA)