Siemens SINUMERIK 840C - Manual (Page 666)

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Siemens AG 2001 All Rights Reserved 6FC5197– j AA50 9–45
SINUMERIK 840C (IA)
II
Counter 2
Counter 1
I
III IV
Quadrant transition point
Fig. 9.20 Radius deviations at the quadrant transition points without compensation
Setting the compensa- If the compensating amplitude is too small, the circularity test shows that the
ting amplitude radius deviations from the programmed radius at the quadrant crossover points
have insufficient compensation (see Fig. 9.21).
II
Counter 2
Counter 1
I
III IV
Fig. 9.21 Radius deviations at the quadrant crossover points with insufficient compensa-
tion
If the compensating amplitude is too high, the circularity test clearly shows the
overcompensation of the radius deviations at the quadrant crossover points (see
Fig. 9.22).
9 Drive Servo Start-Up Application (as from SW 3)
9.5.3 Conventional quadrant error compensation (as from SW 2)