Circularity Test - Siemens SINUMERIK 840Di sl Function Manual

12/2008
Displaying the characteristics and limit values
Fig. 2-23: Table of characteristics and limit values

2.2.4 Circularity test

Description of functions
The circularity test produces a polar plot of the circular path and circularity-specific
characteristics:
Characteristic
Circular deviation
Circular hysteresis
The measurement type-relevant parameters are also specified. The goal is to test
the drive dynamics and accuracy of the two axes involved.
Fig. 2-24: Measuring result of a circularity test
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ePS Network Services, Function Manual (FH) - Release 12/2008
2.2 Variable monitors - Measurements and measurement series
Meaning
The circular deviation is measured on the basis of
ISO 230-4 as difference between the maximum and
minimum radius at movement of a circle in one direction.
A value is calculated for each direction of movement.
As defined in ISO 230-4 the circular hysteresis is
determined by establishing the maximum difference of
measured radii on an angular position between the two
directions of movement.
2 Maschine information
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