Front
Panel
Operation
10
ET
System
electronic
GmbH
Main
display
The
main
display
shows
current
measure
and
set
values.
On
the
left
side
of
this
screen,
present
voltage
and
current
values
are
displayed
as
well
as
the
resulting
power
(P
=
U
*
I)
and
resistance
(R
=
U
÷
I).
The
set
values
are
displayed
on
the
right
side
of
the
screen
(‚
Preset
‘)
and
vary
according
to
the
operation
mode
of
the
unit.
The
lower
right
section
of
the
screen
shows
the
current
Control
Mode
of
the
unit:
Loc
Front
panel
operation
Scr
Memory
card
operation
AI
Analog
interface
operation
Rem
Interface
operation
LLO
Interface
operation,
Front
panel
operation
locked
Dis
Unit
locked
via
interlock
input
(Option)
The
section
to
the
left
of
the
control
mode
display
shows
the
current
Operating
Status
of
the
unit:
Standby
Standby
mode
U
‐
Limit
Voltage
limitation
mode
I
‐
Limit
Current
limitation
mode
P
‐
Limit
Power
limitation
mode
OVP
deactivation
of
the
unit
by
over
voltage
protection
mode
The
section
above
the
operating
status
display
shows
the
current
Operating
Mode
of
the
unit:
UI
Voltage
and
current
limitation
UIP
Voltage,
current
and
power
limitation
UIR
Voltage
and
current
limitation,
simulated
internal
resistance
‐
PV
sim
simulation
of
a
photovoltaic
characteristic
User
simulation
of
a
user
‐
defined
characteristic
UI
display
The
output
diagram
is
displayed
as
an
UI
characteristic.
The
picture
on
the
right
side
shows
the
operating
mode
UIR.
A
small
dot
shows
the
actual
operating
point
of
the
unit.
The
diagram
is
always
relative
to
the
selected
values.
For
example,
the
current
limitation
would
be
changed
from
100
A
to
50
A,
the
internal
resistance
would
be
doubled,
while
the
diagram
would
stay
the
same.
A
horizontal
part
of
the
diagram
corresponds
then
to
50
A
and
not
to
100
A.
O
PERATING
MODES
Operating
Mode
selection
Operating
modes
can
only
be
selected
when
the
main
display
is
visible.
Pushing
the
rotary
pulse
encoder
switches
the
focus
(selected
mode
is
inverted)
through
the
different
modes.
Once
the
option
is
focused,
the
operating
mode
can
be
selected
by
turning
the
rotary
pulse
encoder.
The
unit
needs
to
be
in
standby
mode,
otherwise
the
option
‚
Mode
‘
is
not
selectable.
U
Output
voltage
I
Output
current
P
Output
power
(UIP
mode
only
UIP
mode
)
R
i
Internal
resistance
(UIR
mode
only
UIR
mode
)
U
mpp
MPP
voltage
(PV
sim
mode
only
PV
sim
mode
)
I
mpp
MPP
current
(PV
sim
mode
only
PV
sim
mode
)
