Application Guide

System Application Guide SAG582140001
Spec. No. 582140001 (Model 801
NLDB, 801NLEB, 801NL-B) Issue AN, June 4, 2014
Page 101 of 115
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6.1.13 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 Power Bay is #1, other bays are
numbered consecutively, following the bay-to-
bay cabling scheme.
Primary Power 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 24, as they are
powered-up and recognized by the MCA.
Primary Power 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 of the USER INSTRUCTIONS).
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
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