Application Guide

System Application Guide SAG582140000
Spec. No. 582140000 (Models 802
NLDB, 802NLEB and 802NL-B) Issue AW, June 3, 2014
Page 115 of 134
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4.1.14 MCA Numbering Scheme: The MCA identifies (numbers) the components of the
system as follows.
COMPONENT
MCA IDENTIFICATION NUMBER
MCA NUMBERING
SCHEME (note
that each line
shown below is
separated with a
dash in the MCA
display)
NOTES EXAMPLE
MCA/Router
Bay #
Primary Bay is #1, other bays are numbered
consecutively, following the bay-to-bay
cabling scheme.
Primary Bay
1
Second Bay
2
Fifth Bay
5
Rectifier
(PCU)
Bay #
MCA Rectifier ID#
within the Bay / # of
Rectifiers Installed
in System
Main Power Bay is #1, other bays are
numbered consecutively, following the bay-
to-bay cabling scheme.
Rectifiers are identified from 1 to 10, as they
are powered-up and recognized by the
MCA.
Primary Bay, First
Recognized Rectifier (w/
36 rectifiers installed)
1-01/36
Second Bay, Third
Recognized Rectifier (w/
24 rectifiers installed)
2-03/24
Fifth Bay, Tenth
Recognized Rectifier (w/
12 rectifiers installed)
5-10/12
MCA Relay
Circuit Card
Bay #
Card Position #
w/in Bay
Relay # w/in Card
Primary Bay is #1, other bays are numbered
consecutively, following the bay-to-bay
cabling scheme.
Card #1 = left slot,
Card #7 = right slot.
Relay # (see illustration in System Overview
Chapter)
Primary Bay, Relay Card in
First Slot, Relay One on
Card
1-1-1
Second Bay, Relay Card in
Third Slot, Relay Four on
Card
2-3-4
Fifth Bay, Relay Card in
Seventh Slot, Relay Six on
Card
5-7-6
MCA I/O
Circuit Card
Bay #
Card Position #
w/in Bay
Primary Bay is #1, other bays are numbered
consecutively, following the bay-to-bay
cabling scheme.
Card #1 = left slot,
Card #7 = right slot.
Primary Bay, I/O Card in
First Slot
1-1
Second Bay, I/O Card in
Third Slot
2-3
Fifth Bay, I/O Card in
Seventh Slot
5-7
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