Siemens SINUMERIK Series Function Manual page 230

K3: Compensations
4.2 Temperature compensation
Specifying parameters
The temperature compensation parameters must now be determined on the basis of the
measurement results (see diagram above).
Reference position P
As the diagram above illustrates, there are basically two methods of parameterizing
reference position P
1. P
2. P
In this case, version 2 is chosen, which means that the position-independent temperature
compensation value is always 0. The temperature compensation value therefore only
consists of the position-dependent component.
The following parameters are obtained:
● MD32750 $MA_TEMP_COMP_TYPE = 2
● P
Coefficient tanβ (T)
In order to determine the dependency of coefficient tanβ of the position-dependent
temperature compensation on the temperature, the error curve gradient is plotted against the
measured temperature:
Figure 4-3
With the appropriate linearization, coefficient tanβ depends on T as follows:
tanβ(T) = (T - T
with
T = temperature at which position-dependent error = 0; [degrees]
0
230
0
:
0
= 0 with position-independent temperature compensation value K
0
≠ 0 with position-independent temperature compensation value K
0
(only position-dependent temperature compensation active)
= 320 mm → SD43920 $SA_TEMP_COMP_REF_POSITION = 320
0
(reference position for position-dependent temperature compensation)
Characteristic of coefficient tanβ as a function of measured temperature T
) * TK * 10
0 max
/ (T T )
-6
max - 0
≠ 0
0
= 0
0
Function Manual, 03/2013, 6FC5397-1BP40-3BA1
Extended Functions