3-30K
Using the Centrifuge – Spincontrol Professional
52
Version 12/2008, Rev. 1.11 of 27/01/2012
Translation of the original operating manual
Curve Editor
The Curve Editor function can be used to create and edit user-
specific acceleration and deceleration curves.
General information concerning this subject can be found in chapter
11.3 "Acceleration and Deceleration Curves".
Creating and editing an acceleration curve:
Select the option "Curve Editor". A submenu will be displayed
(see Fig. 6.35).
Select a curve number between 20 and 29 under "Curve“. If the
selected curve number is already used, the saved curve will be
displayed.
Define the interval number of the process under “Int”. For every
curve, up to ten intervals can be entered.
Enter the interval time under “Time”, but take the restrictions into
consideration (see below).
Enter the desired acceleration under "RPM“ or "RCF", but take
the restrictions into consideration (see below). The values are
interdependent.
For the first interval, a linear or quadratic rise can be selected
under "QUAD/LIN“. All of the other intervals are linear.
The field “Total” shows the total runtime of the process. The
maximum runtime of a curve is dependent on the slope of the curve
and on the final speed of the rotor.
Restrictions
Deceleration and acceleration curves may include intervals with a
positive slope as well as with a zero slope.
The slop of the curve intervals may be between 4 rpm min. and
1000 rpm max.
Square curve intervals are only possible between 0 and 1000 rpm
max. If the selected final speed is higher than 1000 rpm, this
interval will automatically turn into a linear one above 1000 rpm.
The possible runtime depends on the maximum possible speed
(depending on the rotor) and the slop limitation.
Example 1:
Start speed 0 rpm, final speed 100 rpm, a runtime of 1
hour is not possible since the required slope is < 0.03 rpm and,
therefore, is outside of the defined range.
Example 2:
Start speed 0 rpm, final speed 15,000 rpm, a runtime of
10 seconds is not possible since the required slope is 1500 rpm
and, therefore, is outside of the defined range.
