User manual

Page 46
EA Elektro-Automatik GmbH
Helmholtzstr. 31-37 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
[e-mail]
EL 9000 B HP Series
3.4.6 Manual adjustment of set values
The set values for voltage, current, power and resistance are the fundamental operating possibilities of an elec-
tronic load and hence the two rotary knobs on the front of the device are always assigned to two of the four values
in manual operation.
The set values can be entered manually in two ways: via rotary knob or direct input.
Entering a value changes it immediately, no matter if the DC input is switched on or off.
When adjusting the set values, upper or lower limits may come into effect. See section „3.4.4.
Adjustment limits“. 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.
► How to adjust values with the rotary knobs
1. First check if the value you want to change is already assigned to one of the rotary
knobs.Themainscreendisplaystheassignmentasdepictedintheguretotheright.
2. If, as shown in the example, the assignment is voltage (U, left) and current (I, right),
and it is required to set the power, then the assignments can be changed by tapping
thistoucharea.Asetofselectioneldsthenappears.
3. Aftersuccessfulselection,thedesiredvaluecanbesetwithinthedenedlimits. Selecting a digit is done by
pushing the rotary knob which shifts the cursor from right to left (selected 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 small keypad symbol in 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
calculator the key clears the input.
Decimal values are set by tapping the point key. For example, 54.3 V
is set with and .
3. The display reverts to the main page and the set values take effect.
3.4.7 Switching the main screen view
The main screen, also called status page, with its set values, actual values and device status can be switched
from the standard view mode with three or four values to a simpler mode with only voltage and current display.
The advantage of the alternative view mode is that actual values are displayed with much bigger characters, so
they read be read from a larger distance. Refer to „3.4.3.8. Menu “HMI settings”“ to see where to switch the view
mode in the MENU. Comparison:
Standard status page Alternative status page