43
EN
Instruction Manual
PSI 8000 2U Series
Date:04-26-2011
About the power supply
Set value of the power
Target value of the desired maximum output power (right knob).
In order to set the value, button
has to be pushed before.
Set value of internal resistance (optional)
Target value of the desired internal resistance value (right knob).
This set value replaces the power set value if the internal resi-
stance control is unlocked and U/I/R mode has been selected
in the device setup. In order to set the value, button
has
to be pushed before.
The state of the power output is displayed in the bottom right
corner of the display.
{ON,OFF}
State of the power output
The currently active control mode is displayed to the right of
the related actual values. For instance, the abbreviation „CV“ is
displayed next to the actual value of voltage, because it means
that „Constant voltage“ mode is active. The output values are
limited by the active control mode:
- limited by the voltage set value
(= Constant Voltage)
- limited by the power set values
(= Constant Power)
- limited by the set value of current
(= Constant Current)
- limited by the set value for internal resistance
(optional at U/I/R mode), indicated next to the
actual voltage
(= Constant Resistance)
Additionally to the state of the output an alarm, a warning or a
signal can be displayed:
Alarm
Example:
= Overtemperature
Warnings
Example:
= Overvoltage
Signals
Example:
= Overcurrent
The location from where the unit is currently controlled is dis-
played below the output state. This location is absolute, which
means that you cannot control the unit from elsewhere without
changing the location.
local
Control only possible at the unit
remote
Remote control via communication interfaces
(IF-C1, IF-R1, IF-U1 etc.)
extern
Remote control via analogue interface
6.4
Switching the unit on
The unit is switched on with the mains switch. After it has been
switched on, the displays shows the device type and, if pro-
grammed, a user text.
The user text can be entered via one of the digital interface
cards using an included LabView VI. This text is intended to
identify a single unit in an complex environment of multiple units.
After the internal system has been verified and has booted, the
last state of the power supply (set values, alarm management
etc.) is restored. The return state of the output after a mains
loss (power fail error) or after the unit was switched on can be
set in the
Profile
menu.
6.5
Switching the power output on
By pressing the
ON
button the power supply output is
switched on, as long as it is not blocked by the input pin „REM-
SB“ (13) of the internal analogue interface or input pin „Standby“
(11) of a equipped analogue interface card IF-A1, because both
have higher priority. If one of these is preventing to switch the
output on by the button, the display will indicate the status text
„
auto ON
“, noticing the user that the output will switch on as
soon as the block from the pins is removed.
Note: in
local
state (see section 6.9), the pin REM-SB of the
analogue interface (internal or external) is inoperative.
The display shows the current state with „
ON
“.
The
OFF
button switches the power supply output off
(shutdown). This state is displayed with „
OFF
“.
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