User Manual

RVC 2
-
33 CD
&
Appendix
Version 01/2009, Rev. 1.21 of 25/11/2013 - sb 65
Translation of the original operating manual
11 Appendix
11.1 Mathematical Relations
The automatic processes under “Program administration” (see
chapter 6.3.5.2) are based on the following considerations:
Fig. 11.1: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
Calculation example:
Section Set values
Section time [h:min] Temperature [°C]
previous ... 30
current 1:00 60
C/min 0.5
min
60
30
min
60
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 







 

