Ea Elektro Automatik EA Elektro-Automatik EA-ELR 91000-30 3U Electronic Load 0 - 30 A 0 - 1000 Vdc 0 - 7000 W 33200409 데이터 시트
제품 코드
33200409
Page 46
ELR 9000 Series
EA Elektro-Automatik GmbH
Helmholtzstr. 31-33 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
3.4.4 Adjustment limits
Adjustment limits are only effective on the related set values, no matter if using manual
adjustment or remote control setting!
Defaults are, that all set values (U, I, P, R) are adjustable from 0 to
100%.
This may be obstructive in some cases, especially for protection of
This may be obstructive in some cases, especially for protection of
applications against overcurrent. Therefore upper and lower limits
for current (I) and voltage (U) can be set which limit the range of the
adjustable set values.
For power (P) and resistance (R) only upper value limits can be set.
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 white 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
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
for rotary knob assignment 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 limit for the power set
value (P-max) to 3.00 kW while the currently adjusted power set value is 3.50 kW, then the set
value first would have to be reduced to 3.00 kW or less, in order to set P-max down to 3.00 kW.
3.4.5 Changing the operating mode
In general, the manual operation of an ELR 9000 distinguishes between three operating modes which are tied
to set value input using the rotary knobs or ten-key pad. This assignment must be changed if one of the four set
values is to be adjusted which is currently not available.
► How to change the operating mode
1.
Unless the device is device 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 coloured 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 knob. In the example in the figure it has P and I assigned, which
means U/P mode.
Depending on the selection the right rotary knob will be assigned different setting values,
the left knob is always assigned to the voltage.
In order to avoid constant changing of the assignments it is possible, e.g with selection R/I, to
change the other values U and P by direct input. Also see section 3.4.6.
The actual operating mode of the load, which is only effective and indicated while the DC input is switched on,