Leonardo
System
1kW/1500/24
S
Manuale
Tecnico
Leonardo
System
1kW/1500/24
S
Technical
Manual
Rev.
5.0
02
‐
02
‐
2015
This
document
is
the
property
of
WESTERN
CO.
Srl
‐
All
rights
are
reserved
‐
Reproduction
and
use
of
information
contained
within
this
document
is
forbidden
without
the
written
consent
of
WESTERN
CO.
Srl
5
PV
charge
controller
section
Leonardo
System
version
1kW/1500/24
S
has
a
PV
charge
controller
with
2
MPPT
independent
inputs.
It
is
a
PV
charge
controller
for
electrochemical
sealed
batteries.
For
the
proper
acknowledgement
of
the
battery
voltage
at
start
‐
up,
we
recommend
to
set
up
the
recharge
parameters
as
described
in
tab.1
Battery voltage at start-up
20.0V < Vbatt < 32.0V
24V battery
Tab. 1 Voltage survey
How
to
choose
the
PV
module
The
choice
of
the
PV
module
is
closely
related
to
the
battery
voltage.
To
configure
the
string
of
modules
for
the
system
we
recommend
to
follow
the
instructions
listed
in
the
table
reported
below.
Please
note
that
thanks
to
the
2
MPPT
charge
controllers
is
possible
to
connect
the
modules
to
2
independent
inputs
so
to
assure
an
exploiting
to
the
full
of
the
whole
power.
Nominal
input
voltage
PV
Modules
features
24V
battery
60
‐
cell
strings
of
Si
mono
crystalline
/
poly
crystalline
for
a
250Wp
Connect
2
modules
in
series.
The
power
for
every
single
input
needs
minimum
450W
up
to
550W.
Max
Isc
is
13A
for
each
input.
Max
Voc
is
150V
for
each
input.
Tab. 2 PV module choice
NOTTE
BULK
ABSORPTION
FLOAT
NOTTE
V
float
V
ch
T
Abs.
Pic.6 Charge curve
In
the
charge
curve
are
clearly
indicated
3
steps:
Bulk
‐
Absorption
‐
Float
Please
note
that:
‐
recharge
parameters
have
to
be
considered
at
25°C
‐
state
and
behaviour
of
temperature:
4mV/cell
for
every
grade
‐
charge
parameters
according
to
factory
default
values
for
SEAL
batteries
and
nominal
voltage
at
48V
that
is
Vch
=
57.6
and
Vfloat
=
53.6.
