User Manual

Page 70
EA Elektro-Automatik GmbH
Helmholtzstr. 31-37 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
[e-mail]
PSB 9000 2.5 kW Series
Schematic diagram: Applications and results:
t
U,I
Po int 1 Po int 2 Pt. 3 Po int 4
Example 9
Focussing 1 cycle of 4 sequence points:
Point 1: 1/4th sine wave (angle = 270°)
Point 2: Three sine waves (ratio of frequency to
sequence time: 1:3)
Point 3: Horizontal ramp (f = 0)
Point 4: Falling ramp (f = 0)
3.11.10.1 Loading and saving the arbitrary function
The99sequencepointsofthearbitraryfunction,whichcanbemanuallyconguredwiththecontrolpanelofthe
device and which are applicable either to voltage (U) or current (I), can be saved to or loaded from a common USB
stickviathefrontsideUSBport.Generally,all99pointsaresavedorloadedatonceusingatextleoftypeCSV
which represents a table of values.
In order to load a sequence table for the arbitrary generator, following requirements have to be met:
• Thetablemustcontainexactly99rows(100arealsoacceptedforcompatibilitytopreviousrmwares),with8
subsequent values (8 columns) and must not have gaps
• Thecolumnseparator(semicolon,comma)mustbeasselectedbyMENUparameter“USBleseparatorformat”;
italsodenesthedecimalseparator(dot,comma)
• ThelesmustbestoredinsideafoldercalledHMI_FILESwhichhastobeintherootoftheUSBdrive
• ThelenamemustalwaysstartwithWAVE_UorWAVE_I(notcase-sensitive)
• Allvaluesineveryrowandcolumnhavetobewithinthespeciedrange(seebelow)
• Thecolumnsinthetablehavetobeinadenedorderwhichmustnotbechanged
Followingvaluerangesaregivenforuseinthetable,relatedtothemanualcongurationofthearbitrarygenerator
(column headers like in Excel):
Column Parameter Range
A AC start amplitude See table in „3.11.10. Arbitrary function“
B AC end amplitude See table in „3.11.10. Arbitrary function“
C Start frequency 0...10000 Hz
D End frequency 0...10000 Hz
E AC start angle 0...359°
F DCstarto󰀨set See table in „3.11.10. Arbitrary function“
G DCendo󰀨set See table in „3.11.10. Arbitrary function“
H Time 100...36.000.000.000μs(36billion)
For details about the parameter and the arbitrary function refer to „3.11.10. Arbitrary function“.
Example CSV:
The example shows that onlythe rsttwo sequencepoints arecongured, whileall othersare setto default
values. The table could be loaded as WAVE_U or WAVE_I when using, for example, the model PSB 9080-120,
becausethevalueswouldtboth,voltageandcurrent.Thelenaming,however,isunique.Alterpreventsyou
fromloadingaWAVE_Ileafteryouhaveselected“Arbitrary-->U”inthefunctiongeneratormenu.Thelewould
not be listed at all.