06.93 12 Functional Descriptions
12.16.3 Installation
12.16.3.2 Installation with adaptation characteristic
If the compensation is acceleration dependant, a characteristic must be determined in a
second stage.
The required compensation amplitudes for differend radii and velocities are determined, the
effect of the compensating amplitudes checked in a circularity test and the optimum
compensation amplitudes logged.
The following characteristic is used for the adaptation:
Figure 1
nmax
nmin
Max. amplitude MD 1232*
Minimum amplitude MD 1240*
Acceleration
MD 1244* MD 1248* MD 1252*
1 2 3 4
a1a2a3a'3
A distinction is made between four ranges in the characteristics:
nmax
nmax
nmax
nmin
n =
for a < a
for a1 a a2
for a2 < a < a3
for a3 a
a – a2
a3 – a2
1 –
a
a1
The characteristics in Figure 1 are used for the following examples. It is defined by the values
”Maximum compensating amplitude”, ”Minimum compensating amplitude” and the three
acceleration values a3, a2 and a1. Considerably more measured values should be determined
as a control, most importantly there should be a sufficient number of points for high velocities
with small radii. The characteristic values are most easily derived from a graphic
representation.
© Siemens AG 1992 All Rights Reserved 6FC5197- AA50 12–123
SINUMERIK 840C (IA)