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EA Elektro-Automatik GmbH
Helmholtzstr. 31-37 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
EL 9000 B 15U/24U Series
Uploading of a table from an USB stick must use text files in CSV format (.csv). Plausibility is
checked on loading (values not too high, number of values correct),and possible errors reported
in which case the table will not be loaded.
The 4096 values in the table are only checked for size and count. If all the values were to be
graphically plotted a curve would be created which could include significant step changes in
current or voltage. That could lead to complications in the loading of the source if, e.g., the
internal voltage measurement in the electronic load fluctuates slightly so that the load jumps
backwards and forward between two values in the table which, in the worst case, could one be
0 A and the other maximum current.
3.10.12.1 Loading UI and IU tables from USB drive
The so-called UI or IU value tables can be loaded from a file via a standard
USB stick that is formatted as FAT32. In order to load the file, it has to meet
following specifications:
•
The file name always begins with IU or UI (not case-sensitive), depending
on which of the two function you load the table for
•
The file must be a text file of type Excel CSV (semicolon as separator)
and must only contain one column with exactly 4096 values without gaps
•
Values with decimal places must use a decimal separator as depending on the selection with parameter “USB
file separator format” (“US”: separator = comma, decimal separator = dot)
•
No value may exceed the nominal value of the device. For example, if you have an 80 V model and you are
going to load a table with values for voltage, none of the 4096 values may be higher than 80 V (the adjustment
limits from the device’s front panel do not apply here)
•
The file(s) has/have to be put inside a folder named HMI_FILES in the root of the stick
If these specifications are not met, the device won’t accept the file and put out an error message in the display.
Files with names beginning different to UI or IU are not recognized for this purpose. The USB drive may contain
multiple UI/IU files with different names and list them for the selection of one.
►
How to load an UI or IU table from an USB drive:
1.
Do not plug the USB drive yet or pull it out if already plugged.
2.
Open the function selection menu of the function manager with MENU -> Function Generator -> XY Table
3.
In the next scree select the desired function with either „UI Table“ or „IU Table“.
4.
Configure the global parameters for U, I and P, if necessary.
5.
Tap touch area
and plug the USB drive when requested, in order to select one out of X compatible
files from the drive. In case the file is not accepted, the device will report an error in the display and also tell
what’s wrong with the file.
6.
Once the file is accepted, you will be requested to remove the USB drive.
7.
Submit and load the function with
to start and control it as with other function (also see
