User's Manual
PMP320HDW2v1
3-31
Preliminary
JUL
2010
1
Install
the
CMM4
power
supply
in
a
hut,
wiring
closet,
or
weatherized
NEMAapproved
enclosure.
It
is
designed
for
extreme
temperatures
but
it
is
imperative
to
keep
moisture
away
from
the
power
converter
.
2
Do
not
install
the
power
supply
within
the
CMM4
enclosure
as
it
will
increase
the
heat
within
the
enclosure
to
an
unacceptable
level.
The
CMM4
enclosure
is
large
to
provide
surface
area
for
heat
dissipation
without
the
use
of
forced
convection
fans,
not
to
provide
space
for
additional
high-power
electronics.
3
F
or
the
DC
side
of
a
56
VDC
power
suppl
y
,
engineer
the
DC
cable,
selecting
the
wire
gage
from
T
able
4-1
.
Use
either
UV
-resistant
cable
or
shield
the
cable
(as
in
a
conduit)
from
UV
rays.
4
Installing
the
power
supply
for
the
CMM4
Chapter
3:
CMM4
Hardware
Installation
Installing
the
power
supply
for
the
CMM4
■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■
■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■
■ ■ ■ ■ ■ ■ ■ ■ ■ ■
■
■
W
AR
NING
Although
the
output
of
the
power
supply
is
29
VDC
or
56
VDC,
the
power
rating
classifies
the
converter
as
a
Class
2
electric
device.
For
this
reason,
whenever
you
work
on
power
in
the
CMM4,
you
must
first
disconnect
the
DC
supply
from
the
AC
power
source.
Select
the
appropriate
procedure
to
install
the
power
supply
for
the
CMM4.
Directions
are
provided
for
a
56
VDC
power
supply
and
a
procedure
on
how
to
install
the
30
VDC
power
suppl
y
.
If
using
both
30
VDC
and
56
VDC
,
a
1000
Ohm
5W
resistor
must
be
installed
across
the
30
VDC
+V
and
GND
at
the
terminal
block.
56
VDC
Power
Supply
Installation
Use
the
following
procedure
to
install
a
56
VDC
power
supply
for
the
CMM4.
Procedure
3-2
Installing
a
56
VDC
Power
Supply
for
the
CMM4
Connect
the
DC
cable
on
the
top
of
the
connector.
Insert
the
+V
lead
into
the
terminal
7
cage
clamp
and
insert
the
GND
(ground/return)
lead
into
the
terminal
4
cage
clamp.
T
o
insert
a
lead
into
a
cage
clamp,
insert
a
thin-blade
screwdriver
in
the
secondary
cage
clamp
hole
and
lever
the
screwdriver
away
from
the
main
cage
clamp
hole.
Continued