Siemens SINUMERIK Series Function Manual page 291

Compensation value too large
Too large a compensation value (MD32520) in the circularity test is indicated by
overcompensation of the contour deviations at the quadrant transitions.
Figure 4-15
Time constant too small
Too small a time constant (MD32540) in the circularity test is indicated by short-time
compensation of the contour deviations at the quadrant transitions which immediately
increase thereafter.
Figure 4-16
Extended Functions
Function Manual, 03/2013, 6FC5397-1BP40-3BA1
Compensation value set too large
Compensation time constant set too small
4.6 Friction compensation (quadrant error compensation)
K3: Compensations
291