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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
PSI 9000 DT Series
3.4.6
Manual adjustment of set values
The set values for voltage, current and power are the fundamental operating possibilities of a power supply and
hence, in manual operation, the two rotary knobs on the front of the device are always assigned to two of these
values. The default assignment is voltage and current.
As a fourth value there is the internal resistance, which requires to activate the resistance mode (R mode) in the
„3.4.3. Configuration via MENU“
„3.2.4. Internal resistance regulation“
for details.
Set values can be entered manually in two ways: via
rotary knob
or
direct input
. While manual adjustment with
the knobs alter values continuously, direct input allows for even huge value steps, such as 0-100%.
Entering a value changes it at any time, no matter if the DC output is switched on or off.
When adjusting the set values, upper or lower limits may come into effect. See section
. Once a limit is reached, the display will show a note like “Limit: U-
max” etc. for 1.5 seconds next to the adjusted value or will refuse to accept a value enter by
direct input.
►
How to adjust values with the rotary knobs
1.
First check whether the value to be changed is assigned to one of the rotary knobs.
The main screen displays the assignment as depicted in the figure to the right.
2.
If, as shown in the example, the assignment is voltage (U, left) and power (P, right),
and it’s required to set the current, then the assignments can be changed by tapping
the knob depiction as often as required to switch to “I” for current.
3.
After successful selection, the desired value can be set within the defined limits. Selecting a digit is done by
pushing the rotary knob which shifts the cursor right to left (digit will be underlined):
►How to adjust values via direct input:
1.
In the main screen, depending on the rotary knob assignment, values
can be set for voltage (U), current (I), power (P) or resistance (R) via
direct input by tapping on the set/actual value display areas, e. g. in the
uppermost area of voltage.
2.
Enter the required value using the ten-key pad. Similar to a pocket cal-
culator the key
clears the input. Decimal values are set by tapping
the point key. For example, 54.3 V is set with
and
. Should the entered value not be within the adjustment
limits, it will be rejected with an error message.
3.
The display switches to the main page and the set values take effect..
Summary of Contents for PSI 9000 DT Series
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