Vertiv
™
NetSure
™
-48 VDC Power System
System Application Guide
Spec. No: 582140001
Proprietary and Confidential © 2022 Vertiv Group Corp.
SAG582140001
Model No: 801
NLDB
, 801
NLEB
, 801
NL
-
B
Page 97
Revision T, September 28, 2022
6.1.14
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 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
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
