Siemens Static Trip III User Manual

Breaker
Display Unit
Breaker Display Unit
The Breaker
Display
Unit
(BDU)
is
used to
locally
monitor and
program
Static
Trip lll trip units
with metering andlor
extended
protective
relaying capabilities,
The
BDU may be
mounted
on the
front cover of
Type RL circuit breakers
or other sur-
face
near
the trip
unit. The
BDU interfaces
with the trip unit
through the
local communications
port
on the
front of the trip
unit. Power for the
BDU is supplied by the
trip unit, eliminating
the need
for
an additional
power
source.
BDU Mounted on
Type RL
circult
breaker
Operator
control of the
BDU's display
and trip unit
program-
ming
is with the four-key
key-pad. Each key
has two
primary
functions, depending upon
the
parameter
or
data being
dis-
played.
The
primary
functions of the
keys are briefly
identified
as follows:
v
scroll
to
previous
window
in
the
sequence
count up
scroll to
next window
in
the
sequence
count
down
read additional
data
display
maximum
value
enter displayed
data
(e.
g. protection
threshold)
display
minimum value
Selecting
Operating
Mode
-
There are
two operating
modes
of
the BDU.
The data
mode is used to
read the
parameters
of
the
metered
functions and to
read the
alarm, trip
,
and
Min/Max
logs,
The
program
mode is used
when setting
the configura-
tion
parameters,
alarm
set-points,
thresholds,
and time
delays.
Pressing
Read
and
Enter at the
same time
toggles
the
BDU
between the
data and
program
modes, The
modes
will always
start at the beginning
of their
respective
routines,
regardless
of
where the window
was in the exited
mode.
The
words
"DATA"
or
'PROGRAM'
will appear
on the display,
indicating
the
operating
modes,
Read
+ Enter
Toggle by
pressing
the
Read and Enter
keys at the same
time.
Data
Mode
-
The data
mode
is
the
default
mode of the
BDU.
When
power
is first applied,
the
BDU will be
in the data
mode.
lf the BDU
is in the
program
mode and
a key
is not
pressed
within
five minutes, the
BDU
will automatically
toggle
to the
data
mode.
Reading
Metering
Data
-
The
BDU may be
allowed to
auto-
matically scroll
through
the real-time
metered
values or
may be
manually scrolled
with the Up
and
Down keys.
lf no key
has
been
pressed
within 4 seconds
after the
data
mode has been
selected,
the BDU
will automatically
start scrolling
through
the
illustrated sequence.
The automatic
scroll
mode will start
immediately after
initial
power
up or after
executing
the self test
mode.
The BDU does
not automatically
scroll
through
the
alarm and
trip logs.
After the
BDU has scrolled
through
and
displayed
all of the
metered
values,
it
automatically
returns
to the beginning
and scrolls
through
the
values again.
The
readout time
of each
displayed
value is
4
seconds
The Up
and
Down
keys may be used
to more
quickly
scroll
to a desired
readout.
The display
will remain on
the selected
measured
parameter
until
manually scrolled
to another
parameter
or until
the
automatic scroll
mode
is
executed
again.
When
a reverse
value is displayed,
the display
will alternately
flash REVS and
the metered
value. Similarly,
LEAD
(or
LAG)
will flash
when
viewing
power
factor.
^^.
Read
Max
Enter
Min
a
a
36

Siemens Static Trip III Specifications

General

Brand	Siemens
Model	Static Trip III
Category	Circuit breakers
Language	English