EPS PSB 10000 4U, Operating Manual

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© EPS Stromversorgung in 2022, this information is subject to change without notice 83 30000800_manual_psb_10000_4u_30kw_en_04
Schematic diagram: Applications and results:
t
U,I
Point 1 Point 2 Pt. 3 Point 4
Example 9
Focusing 1 cycle of 4 sequence points:
Point 1: 1/4th sine wave (angle = 270°)
Point 2: Three sine waves (ratio of frequency to time
is 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 configured 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 file 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 with 8 subsequent values (8 columns) and must not have gaps
•
The column separator (semicolon, comma) must be as selected by menu parameter USB logging -> Log file separator
format ; it also defines the decimal separator (dot, comma)
• The files must be stored inside a folder called HMI_FILES which has to be in the root of the USB stick
•
The file 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 specified range (see below)
• The columns in the table have to be in a defined order which must not be changed
Following value ranges are given for use in the table, related to the manual configuration of the arbitrary generator (column
headers like in Excel):
Column Connected to HMI parameter Range
A AC start See table in “3.11.10. Arbitrary function”
B AC end See table in “3.11.10. Arbitrary function”
C Start frequency 0...10000 Hz
D End frequency 0...10000 Hz
E Angle 0...359°
F DC start See table in “3.11.10. Arbitrary function”
G DC end 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 first two sequence points are configured, 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 10080-1000 4U, because the values would
fit both, voltage and current. The file naming, however, is unique. A filter prevents you from loading a WAVE_I file after you
have selected Arbitrary --> U in the function generator menu. The file would not be listed at all.