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 2
Revision T, September 28, 2022
•
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 provided
to monitor equipment external to the
power system.
The LMS input circuit cards monitor a
variety of analog, binary, and temperature
points external to the system. An LMS
relay output circuit card is also available
which provides programmable relays.
These relays may be used for external
alarms, or to control other equipment.
The LMS Monitoring System can be
accessed via a local port, a modem port
(when optional modem is ordered), an
optional TL1 port, and an Ethernet port
(for Telnet access, optional Web access,
optional SNMP access, optional TL1
access, and Email alarm reporting).
Distribution Bay
