26
Wiring
the
LED
Drivers
The
LED
drivers
in
this
project
are
an
HLG
driver
and
4
LDD
drivers.
The
HLG
driver
powers
the
LDD
drivers
so
that
each
of
the
4
channels
is
individually
dimmable.
As
an
overview,
our
wiring
will
work
like
this:
1.
HLG
driver
AC
input
is
connected
to
an
internal
AC
relay
for
power
2.
HLG
LED
driver
LED
output
is
connected
to
LDD
driver
board
power
input
3.
The
LDD
driver
board
has
4
outputs.
Each
output
is
connected
to
1
LED
string
(4
channels)
BE
CAREFUL
WHEN
WORKING
WITH
AC
POWER.
Ensure
nothing
is
plugged
in
before
proceeding!
The
RSM
hood
has
a
timer
in
it
that
controls
various
relays
for
AC
power.
To
preserve
functionality
of
the
timer
and
fit
all
LED
supply
components
in
the
hood,
we
will
first
wire
up
our
HLG
driver
to
the
1
st
relay
in
the
hood
for
AC
power.
The
1
st
relay
has
a
brown
and
blue
wire
coming
off
of
it.
They
are
known
as
ACL
and
ACN
wires.
Follow
them
through
the
bundle
and
connect
to
the
HLG
AC
inputs.
Screw
Mount
AC
input
connects
to
relay
in
next
step