48
EN
Operating Guide
PSI 8000 2U Series
Date: 28-06-2012
Using the power supply
Set values are submitted
Alternatively to the direct adjustment of set values you can
choose to set the set values only after submitting them with
the
RETURN
button. See section „7. Device configuration“ for
details. The set values can still be changed with the rotary knobs,
but are not set to the output as long as they’re not submitted.
While the set value is unchanged, only its unit is displayed inver-
tedly. If the set value is changed it is also displayed invertedly.
The
SELECT
keys switch from current adjustment to power
adjustment for the right rotary knob. The chosen set values are
not submitted to and set by the power supply until then.
Pressing the
RETURN
button submits the set values.
Pressing the
ESC
button discards the new set values
and the old set values are displayed again.
Note
The adjustment of the resistance set value is only accessible
after the optional „internal resistance control“ is unlocked
(see section 7.8).
Note
The resistance set value is adjustable from 0Ω up to
20* U
Nom
÷ I
Nom
. Means, for example, at a device with U
Nom
=
65V and I
Nom
= 10A it can be adjusted to a maximum of 130Ω.
Using predefined set values
A table of up to 4 sets of set values is accessible in the menu
Preset List
(„7.2 Predefining preset lists“). The left knob
selects the preset list and with the
RETURN
button the set is
submitted or discarded with the
ESC
button.
The chosen set is still 1. After the
RETURN
button
is pressed, the set values of set 3 are submitted to the power
supply. The display then shows the new set values of set
3
.
The
ORy
button can be used to jump straight to the
menu page where the preset lists are defined and there they‘re
edited and submitted with
RETURN
as usual.
Step widths for set value adjustment
Voltage
Current
Nom. val Coarse Fine
Nom. val
Coarse Fine
32V
200mV 10mV 4A
50mA 1mA
40V
0.5V
10mV 5A
50mA 1mA
65V
0.5V
10mV 10A / 15A
0.1A
10mA
80V
0.5V
10mV 20A / 30A
0.2A
10mA
160V
1V
100mV 40A / 60A
0.5A
10mA
360V
2V
100mV 120A
1A
100mA
720V
5V
100mV
Power
Resistance
Nom. val Coarse Fine
Nom. value
Coarse Fine
1000W
10W
1W
13.3/16Ω
0.1Ω
10mΩ
1500W
10W
1W
26.7/32/40Ω
0.2Ω
10mΩ
3000W
20W
1W
53.3/64Ω
0.5Ω
10mΩ
130Ω
1Ω
100mΩ
240/260Ω
2Ω
100mΩ
480/720/800Ω 5Ω
100mΩ
960Ω
5Ω
100mΩ
Note
The resolution of the set value adjustment in some cases is,
depending on the nominal values, higher than the one of the
output voltage. Thus it can happen that the output voltage
only changes every 2 or 3 steps
6.7 Switching the button panel
The button
PAGE
is used to switch to another button
panel. The new button assignments of the other panel allow the
user to lock the control panel, switch to the function manager
or set the location mode.
6.8 Locking the control panel
The button „Lock button panel“ locks all buttons, except
itself, and the rotary knobs. The unit is now locked from manu-
al acess, so that no set value can be changed or no menu is
accessible. The locking mode can be set up in the menu. The
control panel can be either completely inactive or it can exclude
the
OFF
button (the unit is then locked but can be switched off
and on by the
OFF
button). See also „Control panel lock“ in
section „7.4 Configuring the control panel“.
After the control panel was locked it changes to this
icon. The button can be used to unlock the control panel again,
if button
is pressed within the next 2s.
6.9 Control locations
The device can be switched between three control locations:
LOCAL, REMOTE/EXTERN and FREE. LOCAL can only be
activated manually and prevents any remote control or interrupts
it. REMOTE (digital remote control) or EXTERN (analog remote
control) are activated from the interfaces and FREE is always
active, if none of the other is present. The device indicates
LOCAL and REMOTE/EXTERN in the display.
Usage:
With this button the user sets the unit into strict LOCAL
mode, so that it is only controllable locally (
local
), means by
hand and access by any interface, analog or digital, is denied or
will be interrupted, if active when the button is pressed.
With the button
EXT
the user enables the remote control
of the unit via a digital or analog interface card and deactivates
the
local
mode.
