Application Guide

SAG582140001 System Application Guide
Issue AN, June 4, 2014 Spec. No. 582140001 (Model 801
NLDB, 801NLEB, 801NL-B)
Page 2 of 115
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fuseholders or Bullet Nose-type circuit breakers.
• Rectifier Modules
The Rectifier Modules provide load power, battery float current, and battery recharge
current during normal operating conditions.
• MCA (Meter-Control-Alarm)
The MCA controls the operation of the Rectifier Modules and provides power system
control, metering, monitoring, and alarm functions.
MCA Local Control Panel: This panel is located on the front of the Primary Power
Bay and contains a keypad, display, and indicators for local MCA user interface.
MCA Relay Circuit Card: Each MCA relay circuit card provides six (6) sets of
Form-C relay contacts for customer external alarms. These relays are user
programmable for various power system alarms. Up to sixteen (16) MCA relay circuit
cards can be installed in the Primary
and Secondary Power Bays. The
Primary Power Bay is factory
equipped with two (2) MCA relay
circuit cards.
MCA I/O Circuit Cards: The MCA
I/O circuit cards provide analog
inputs/outputs and binary inputs. Up
to sixteen (16) MCA I/O circuit cards
can be installed in the Primary and
Secondary Power Bays.
• Optional Integrated
LMS Monitoring System
The LMS Monitoring System consists
of an LMS Main CPU circuit card,
optional LMS Expansion CPU circuit
cards, optional LMS I/O circuit cards,
optional LMS Expansion Cabinet,
and optional LMS Expansion
Assemblies.
The LMS Main CPU circuit card is
mounted in the Primary Power Bay.
Each Secondary Power Bay that is to
be equipped with optional LMS I/O
circuit cards must contain an LMS
Expansion CPU circuit card. LMS
Expansion Cabinets and LMS
Expansion Assemblies are available
that mount into customer racks and
equipment.
The LMS Monitoring System is
factory integrated within each Power
Bay, and requires no additional
customer interconnections within the
Power Bay. Simple cable
connections between Power and
Distribution Bays complete the
interbay connections required.
Separate analog, binary, and relay circuit cards do not have to be supplied for power
system monitoring. Analog, binary, relay, and temperature circuit cards can be
Distribution Bay
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