ABB MMCO-2 - Page 14

I
.
L
.
41
-
121.2
9.1
.
UNIQUE
REMOTE
COMMUNICATION
(
WRELCOM
)
PROGRAM
NOTE
:
The
frequency
counter
should
be
set
to
trigger
on
a
negative
edge
of
the
clock
output
square
wave
Two
types
of
remote
interface
can
be
ordered
.
9
.
INSTALLATION
—
for
single
point
computer
com
-
munication
.
—
for
local
network
communication
.
•
A
special
software
(
WRELCOM
)
program
is
provided
for
obtaining
or
sending
the
setting
information
to
the
MMCO
.
The
MMCO
front
panel
shows
two
fault
events
(
last
and
previous
)
,
but
thru
the
remote
communication
,
16
fault
events
and
16
records
of
intermediate
target
data
can
be
obtained
and
stored
.
Each
record
of
the
intermediate
target
data
contains
8
-
cycle
information
(
1
-
prefault
and
7
post
-
fault
)
,
with
7
analog
inputs
and
24
digital
data
(
at
the
sam
-
pling
rate
of
8
per
cycle
)
.
Refer
to
WRELCOM
manual
for
detailed
information
.
(
See
IL
40
-
606
.
)
•
RS
232
C
The
MMCO
relay
can
be
released
from
its
case
by
pushing
the
chassis
mounted
latching
levers
.
The
left
-
hand
lever
is
extendible
to
make
its
operation
easier
.
•
INCOM
The
relay
should
be
mounted
on
a
switchboard
panel
or
its
equivalent
in
a
location
free
from
dirt
,
moisture
,
excessive
vibration
,
corrosive
fumes
and
heat
.
The
temperature
outside
the
relay
case
should
be
between
-
20
to
+
55
degrees
C
for
normal
operation
.
Mount
the
relay
vertically
by
means
of
four
mounting
holes
on
the
flanges
for
semi
-
flush
mounting
or
by
means
of
the
rear
stud
or
studs
for
projection
mount
-
10
.
MAINTENANCE
AND
REPAIR
ing
.
All
relays
should
be
inspected
periodically
and
set
-
tings
and
times
of
operation
should
be
checked
at
least
once
every
year
,
or
at
such
other
intervals
as
may
be
indicated
by
experience
,
to
be
suitable
for
the
particular
application
.
NOTE
:
Projection
mounting
is
not
possible
with
the
INCOM
communications
accessory
installed
.
Either
a
mounting
stud
or
the
mounting
screws
may
be
utilized
for
grounding
the
relay
.
External
toothed
washers
are
provided
for
use
in
the
locations
shown
on
the
Outline
and
Drilling
Plan
(
Figure
31
)
,
to
facili
-
tate
making
a
good
electrical
connection
between
the
relay
case
,
its
mounting
screw
or
studs
,
and
the
relay
panel
.
Ground
wires
are
affixed
to
the
mounting
screws
or
studs
as
required
for
poorly
grounded
or
insulating
panels
.
Other
electrical
connections
may
be
made
directly
to
the
terminals
by
means
of
screws
for
steel
panel
mounting
or
the
terminal
studs
fur
-
nished
with
the
relay
for
thick
panel
mounting
.
The
terminal
studs
may
be
easily
removed
or
inserted
by
locking
two
nuts
on
the
stud
and
then
turning
the
proper
nut
with
a
wrench
.
For
detailed
FT
22
case
information
,
refer
to
I
.
L
.
41
-
076
.
CAUTION
While
handling
the
relay
out
of
its
case
,
Elec
-
trostatic
Discharge
(
ESD
)
procedure
must
be
followed
(
see
Page
1
)
.
11
.
RENEWAL
PARTS
Repair
work
can
be
done
most
satisfactorily
at
the
factory
.
However
,
interchangeable
parts
can
be
fur
-
nished
to
customers
who
are
equipped
for
doing
repair
work
.
When
ordering
parts
,
always
give
the
complete
nameplate
data
.
14
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