CP-720 dBC MC4 & MTC CONNECTION PROCEDURE
STEP 1: DC CONNECTIONS
IPREV 4.16.20A
STEP 1: DC CONNECTIONS
IMPORTANT:
ALWAYS
CONNECT
DC
FIRST.
DO
NOT
ENERGIZE
AC
BUS
TO
INVERTERS
UNTIL
ALL
INVERTERS
HAVE
BEEN
DC
POWERED
WITH
ENOUGH
SUN
LIGHT
(LEDs
blinking
continuously).
60/72
cell
modules:
Plug
each
panel
into
one
of
the
two
pairs
of
MC4
connectors
of
the
CP720.
Note:
The
pair
further
AWAY
from
the
LED
powers
the
electronics.
96/128
cell
modules:
Make
a
PARALLEL
connection
between
two
96
or
128
cell
modules
using
a
2
‐
1
MC4
combining
adapter.
This
parallel
combination
should
be
plugged
into
the
FIRST
pair
of
MC4s
on
the
CP720
(furthest
from
the
LED).
The
second
pair
of
MC4s
connectors
on
the
CP720
should
be
connected
together
(shorted).
STEP 2: AC CONNECTOR – INSTALLATION PROCEDURE
1)
Join
the
integrated
AC
cable
from
the
microinverter
to
a
trunk
cable
T
‐
Junction.
NOTE:
The
connector
pins
should
easily
glide
into
the
socket.
A
small
click
indicates
that
the
connector
is
properly
seated.
IMPORTANT
:
do
not
try
to
force
in
the
connector!
Insertion
resistance
indicates
improper
orientation.
Rotate
the
connector
180
°
before
trying
again.
MBC Cable
MBC Cable
MTC C bl
1
2
MTC Cable
1
LED CODES
After DC is applied:
Blink
Sequence
Meaning
Slow,
1
blink
every
4
seconds DC
Connected,
but
Micro
NOT
READY
for
AC
to
be
applied
‐
WAIT
Continuous
blinking
DC
Connected
and
Micro
now
ready
for
AC
to
be
applied.
Blink
Sequence
Meaning
1 blink every 8 seconds
Normal production, inverter not bound to gateway
pp
After AC is applied:
1
blink
every
8
seconds
Normal
production,
inverter
not
bound
to
gateway
1
blink
every
16
seconds
Normal
production,
inverter
bound
to
gateway
2
blink
every
4
seconds
Microinverter
initializing
after
grid
present
‐
WAIT
3
or
4
blinks
every
4
seconds
Error
‐
Grid
voltage
out
of
range
5
blinks
every
4
seconds
Error
‐
PV
module
voltage
out
of
range
Chilicon Power LLC | 2019
18
