2011-04-
4.2 Ser
option
This opt
When se
parallel w
rack, a b
is provid
current b
The serie
describe
special c
CR optio
4.3 Out
If one D
power sy
detected
The PSC
provide
contact o
4.4 Co
config
The
Figu
units for
Each Pow
(C), bala
option B
With the
achieved
adjusted
below.
26
ries diode
CR
ion is an exte
everal PSC u
with so calle
built in series
ded that will
between unit
es resistor w
d in
chapter
cable arrangm
on.
tput under
C/DC conve
ystem an alar
.
C has a logic
a logic signa
output,
see se
nnecting s
uration
ure 4
shows
r the load and
wer supply h
ancing resisto
B. The alarm
e CR option a
d if the outpu
d. Use instruc
e with serie
ension of 4.1
units are conn
ed “hot plug i
s resistor and
automaticall
ts.
will provide th
4.6 and figu
ments are nee
r voltage a
erter fails in a
rm signal sho
open collect
al. An option
ection 7 page
systems i
a N+1 system
d one for the
has a built in
or (R) and al
is cascade co
a hot plug-in
ut voltage is c
ction in
sectio
Cop
es resisto
1 Series diod
nected in
in” in 19” su
d series diode
ly balance th
he Ud functio
ure 6
. Thus n
eded with thi
alarm
a redundant
ould be
tor alarm to
nal relay dry
e 10.
n N+1
m with two
redundancy
; series diode
larm Relay
onnected.
n can be
correctly
on 4.6 -3
pyright 2000-2
or,
de.
ub-
e
he
on
no
is
y.
e
F
4
p
Th
on
im
as
te
th
lo
ha
an
F
•
•
INSTAL
PSC seri
2011
Figure 4. An N
loa
.5 Connec
arallel on
he expected
n converter t
mportant for
s equal as po
emperature. T
he converters
oad. The cabl
ave a voltage
nd the load a
Figure 5
and F
When the s
recommen
approxima
voltage (to
temperatur
When the s
not recom
be approxi
voltage.
LATION M
es AC inpu
N+1 system
ad and one fo
cting conv
the outpu
life of the co
emperature.
paralleled un
ssible to redu
To achieve g
s must have s
les should be
e drop, Ud, b
at maximum c
Figure 6.
series diode i
d, the voltag
tely 1.0% of
also compen
re coefficient
series diode i
mended,
the
mately 0.5%
MANUAL
uts
P
with two uni
for the redund
verters in
ut
onverter is de
It is therefor
nit to share th
duce the conv
good current
separate cabl
e dimensione
between the c
current capa
is used, whic
ge drop shoul
f nominal out
nsate for the
t of the diode
is
not
used
,
e voltage dro
% of nominal
Page 7(14)
its for the
dancy
ependant
re
he load
verter
sharing
les to the
ed to
converter
acity,
see
ch we
ld be
tput
negative
e).
this is
op should
output
