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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
PSB 9000 3U Series
3.5.4
Adjustment limits
Adjustment limits are only effective on the related set values, no matter if using manual adjust
-
ment or remote control setting!
Defaults are that all set values (U, I, P, R) are adjustable from 0 to 102%.
The full range may be obstructive in some cases, especially for pro-
tection of applications against overvoltage. 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 centre)
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 6000 W while the currently adjusted power set value is 8000 W, then the set
value first would have to be reduced to 6000 W or less, in order to set P-max down to 6000 W.
3.5.5
Changing the operating mode
In general, the manual operation of a PSB 9000 3U distinguishes between two resp. three operating modes, U/I
and U/P and U/R, which are tied to set value input using the rotary knobs or ten-key pad. This assignment must be
changed if one of the three resp. four set values is to be adjusted which is currently not assigned to any of the knobs.
►
How to change the operating mode (two options)
1.
Unless the device is in remote control or the panel is locked, you can switch the
operation anytime. Tap on the depiction of the right-hand knob (see figure to the
right) to change its assignment between I, 2x P and 2x R (if resistance mode is
activated), which is then displayed accordingly.
2.
Directly tap on the coloured areas with the set values, like shown in the figure to
the right. The physical unit next to the set value, when inverted, indicates the as-
signment to the knob. In the example in the figure it has U and P (sink) 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 change the other values, like P or R while U/I is active, and without switching the
assignment all the time, direct input can be used. See section 3.5.6.
The actual operating mode, which is only indicated while the DC terminal is switched on, solely depends only on
