Owner manual
RVC 2-25 CD&
11 Appendix
68
Version 11/2008, Rev. 2.2 of 04/12/2013 • sb
Translation of the original operating manual
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11 Appendix
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11.1 Mathematical relations
The automatic processes in the “Programmer module” menu (see chapter
6.5.3.2 - "Program administration") are based on the following
considerations:
Fig. 58: Graphical representation of the course of the control setpoint
Calculation of the control set value and of the gradient for the
temperature:
C/min][
secsec
secsec
tioncurrentoftimetion
tionpreviousofvaluesettioncurrentofvalueset
gradient
C][sec gradient time sectionelapsedtionpreviousofvaluesetvaluesetcontrol
Example:
Section
Set values
Section time [h:min] Temperature [°C]
Preceding ... 30
Current 1:00 60
C/min 0.5
min60
30
min60
3060
CCC
gradient
After an elapsed section time of 30 minutes, for example, the control set
value for the temperature is:
C C/.CvaluesetControl
t
45min50min3030
min)30(
Calculation of the control set value for the vacuum:
][ 10
sec
.)sec.(10.sec(10
.)sec.(10
mbarvaluesetcontrol
timetionelapsed
sectioncurrentoftimesection
tprevvaluesetLOGtcurrentvaluesetLOG
tprevvaluesetLOG
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