Installation With Adaptation Characteristic - Siemens SINUMERIK 840C Installation Instructions Manual

06.93
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:
Max. amplitude MD 1232*
n
max
n
min
1
a
1
MD 1244*
Figure 1
A distinction is made between four ranges in the characteristics:
n
max
n
max
n =
n
max
n
min
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 a , a
3 2
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
SINUMERIK 840C (IA)
2
a
2
MD 1248*
a
for a < a
a
1
for a
a – a
2
1 – for a
a – a
3 2
for a
and a . Considerably more measured values should be determined
1
6FC5197- AA50
12 Functional Descriptions
Minimum amplitude MD 1240*
3 4
a a
3 '3
MD 1252*
a a
1 2
< a < a
2 3
a
3
12.16.3 Installation
Acceleration
12–123