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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
3.4.4
Adjustment limits
Adjustment limits are only effective on the related set values, no matter if using manual adjust-
ment or remote control!
Defaults are that all set values (U, I, P, R) and the corresponding ad-
justment limits are adjustable from 0 to 102%.
The full range may be obstructive in some cases, especially for pro-
tection of applications against overcurrent. Therefore upper and lower
limits for current (I) and voltage (U) can be set separately, which then
limit the range of the adjustable set values.
For power (P) and resistance (R) only upper value limits can be set.
► How to configure the adjustment limits
1.
On the main screen, tap
to access the SETTINGS menu.
2.
Tap the arrows
to select “
3. Limits”.
3.
In each case a pair of upper and lower limits for U/I or the upper limit for P/R are assigned to the rotary
knobs and can be adjusted. Tap the selection area for another choice
.
4.
Accept the settings with
.
The set values can be entered directly using the ten-key pad. This appears when the touch area
“Direct Input” is tapped (bottom center)
The adjustment limits are coupled to the set values. It means, that the upper limit may not be
set lower than the corresponding set value. Example: If you wish to set the adjustment limit
for power (P-max) to 30.00 kW while the currently adjusted power set value is 40.00 kW, then
the set value first would have to be reduced to 30.00 kW or less, in order to set P-max down
to 30.00 kW.
3.4.5
Changing the operating mode
In general, the manual operation of the device distinguishes between the three operating modes U/I, P/I and R/I
which are connected to set value adjustment using the rotary knobs or ten-key pad. This assignment must be
changed if one of the four set values currently not assigned to a knob is going to be adjusted.
►
How to change the operating mode
1.
Unless the device is in remote control or the panel is locked, you switch the operation
anytime. There are two options: either tap the depiction of the left-hand knob (see
figure to the right) to change its assignment between U, P and R, or
2.
You directly tap on the colored areas with the set values, like shown in the figure
to the right. The unit next to the set values, when inverted, indicates the assign-
ment of the knobs. In the example to the right they have P and I assigned, which
means P/I mode.
Depending on the selection the left rotary knob will be assigned different setting values,
the right knob is always assigned to the current.
In order to avoid constant changing of the assignments it’s possible, e.g with selection R/I, to
change the other values U and P by direct input. Also see section
The actual operating mode of the load, which is only indicated while the DC input is switched on, solely depends
on the set values. For more information see section
.
