Emerson Liebert Remote Monitoring Panel Manuel d'utilisateur Page 32

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Wiring and Connections - Main Board
Liebert
®
Universal Monitor
24
4.4 Connecting Common Alarm Outputs
The common alarm relay, found in the top right corner of the Liebert
Universal Monitor, permits the user to connect auxiliary notification
equipment, such as lights, horns and sirens, to the Liebert Universal
Monitor. To determine the proper wire size, see Table 7 - Wiring
specifications - main board.
There are two connectors for the common alarm output. However,
the connectors are not individual relay outputs. The connectors
should be treated as a double-pole, double-throw (DPDT) relay.
The common alarm relay is energized whenever an alarm occurs.
To connect an output:
1. Turn OFF electrical power to the Liebert Universal Monitor.
2. If necessary, remove a conduit knockout to permit wire entry into the Liebert Universal Monitor
enclosure.
3. Bring the wire(s) into the Liebert Universal Monitor enclosure through a conduit knockout or
access slot.
4. Loosen the appropriate screw and slip the stripped end of the wire into the terminal block.
5. Tighten the screw until it holds the wire snugly.
4.5 EIA422 Liebert SiteScan
®
Web Connector
The Liebert Universal Monitor will interface with Liebert’s
SiteScan Web enterprise monitoring system. Liebert SiteScan can
be used to monitor analog and digital equipment from a host
computer and also to perform some configuration.
To connect the Liebert SiteScan host computer to the Liebert
Universal Monitor:
1. Turn OFF electrical power to the Liebert Universal Monitor.
2. If necessary, remove a conduit knockout to permit wire entry
into the Liebert Universal Monitor enclosure.
3. Bring the wire(s) into the Liebert Universal Monitor enclosure
through a conduit knockout or access slot.
4. Loosen the appropriate screw and slip the stripped end of the
wire into the terminal block.
5. Tighten the screw until it holds the wire snugly.
4.6 Communications Connections
The Liebert Universal Monitor Service Terminal Interface
offers full configuration and monitoring capability via the
RS232 port and the phone line connector (see
A.2 - Connecting to the Service Terminal Interface). The
phone line connector is also used for pager notifications and
service phone number options.
4.6.1 RS232 Connector
The RS232 port requires a null modem cable. Connect one end
of the cable to the Liebert Universal Monitor’s RS232 port, as
shown at right, and the other end to the COM1 port of a laptop
computer or video terminal.
4.6.2 Phone Line Connector
The Phone Line Connector requires an RJ11 connector.
Connect one end of the connector to the Liebert Universal
Monitor’s phone line connector, shown at right, and the other end to a telephone wall jack.
TB5: COMMON ALARM
(TERMINAL BLOCKS ROTATED IN VIEW)
(BOTTOM)
Q11
R26
R402
P11
+
C
C
NO
CC NO
MO
N ALARM
S
EN
S
TOP
ENABLE
AUDIBLE
(TOP)
NO C NC NO C NC
Common alarm outputs
485
+
+
(TOP)
(BOTTOM)
TB1
0
:
CO
MM
S
422
EIA422 Liebert SiteScan
Web connector
4
+
(TOP)
(BOTTOM)
TB10: COMMS
RJ11: PHONE
PIN 3-TIP
PIN 4-RING
MODEM
Serial interface connector
(RS232/EIA574)
Phone line
connector
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