Commissioning; Temperature-Dependent Parameters; Temperature Compensation Type And Activation - Siemens SINUMERIK 840D sl Function Manual

K3: Compensation
5.2 Temperature compensation
Smooth the compensation value
To prevent overloading of the machine or tripping of monitoring functions in response to step
changes in the temperature compensation parameters, the compensation values are
distributed over several IPO cycles by an internal control function as soon as they exceed
the maximum compensation value specified for each IPO cycle (MD32760, see "Maximum
compensation value per IPO clock cycle (Page 349)").
5.2.2

Commissioning

5.2.2.1

Temperature-dependent parameters

SD43900, SD43910, SD43920
Error curves for different temperatures can be defined for each axis. For each error curve the
following parameters must be determined and then entered in the setting data:
● Position-independent temperature compensation value K
● Reference position P
● Gradient tanβ for position-dependent temperature compensation:
5.2.2.2

Temperature compensation type and activation

MD32750
The temperature compensation type is selected and the temperature compensation
activated using the axis-specific machine data:
MD32750 $MA_TEMP_COMP_TYPE (temperature compensation type)
Bit
0
1
2
348
SD43900 $SA_TEMP_COMP_ABS_VALUE
0
SD43920 $SA_TEMP_COMP_REF_POSITION
SD43910 $SA_TEMP_COMP_SLOPE
Value Significance
Position independent temperature compensation
0 Not active
1 Active
Position-dependent temperature compensation
0 Not active
1 Active
Temperature compensation in tool direction
0 Not active
1 Active
for position-dependent temperature compensation:
:
0
Associated parameters
SD43900
SD43920, SD43910
MD20390
$MC_TOOL_TEMP_COMP_ON
(Activate temperature
compensation tool length)
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
Extended Functions