ABB MMCO-2 - Page 42

I
.
L
.
41
-
121.2
M A M T
5
D
3
G C
1
DIGIT
=
INCOM
RS
232
-
C
NO
COMMUNICATION
M
R
3
Z
REALTIME
CLOCK
NO
REALTIME
CLOCK
T
4
Z
5
AMP
CT
1
AMP
CT
5
5
1
DIRECTIONAL CONTROL
REMOTE
RESET
NO
REMOTE
RESET
NO DIRECTIONAL CONTROL
D
R
6
Z
3
PHASE INPUTS
2
PHASE INPUTS
3
7
2
GROUND
CURRENT
INPUT
NO
GROUND
CURRENT
INPUT
G
8
Z
CO
CURVES
I
EC CURVES
C
9
E
48
/
125
V
250
V
1
10
2
COMMUNICATIONS
OPTION
Two
types
of
communication
options
are
available
for
the
MMCO
relay
.
These
options
consists
of
a
small
plastic
box
mounted
in
the
MMCO
relay
chassis
.
The communicaitons
connector
is accessible
from
the
back
of
the
MMCO
relay
.
The
two
types
of
communication
available
are
RS
232
-
C
which
uses an
optionally
isolated
RS
232
-
C
interface
and
INCOM
which allows connection
to
the
INCOM
network
.
The
INCOM
net
-
work is
a
two
wire network
which
can
consist
of
up
to
2500
INCOM
equipped
relays
controlled
by
a
single
controller
.
An
IMAC
controller is used
to
communicate
with
INCOM
equipped
MMCO
relays
.
An IBM
PC
with
WREL
-
COM
software
installed and
a
MINT
interface
box is
an
alternative
method
of
communication
with
INCOM
equipped
MMCO
relays
.
An IBM
PC
with
WRELCOM
software
installed and
an
RS
232
-
C interface
is used
to
communicate
with
an
RS
232
-
C
equipped
MMCO
relay
.
42
Courtesy of NationalSwitchgear.com