Liebert Universal Monitor Description For more information, see, Digital output loss, EIA574

				Introduction
Table 1	Controller board components (continued)
Item		Description	For more information, see:
		One of eight output jumpers. Each digital output has a	4.2.3: Setting the Digital Output
		jumper to set the fail-safeposition of the output point when
K - Digital output loss-		power fails. The OFF position makes the contact Normally		Jumpers
		Open (factory default). The ON position makes the contact	9.7.4: Configure Main Board Output
of-power jumper
		Normally Closed.		for Loss of Power (“Fail-
		Note: The jumper position has no effect on the contact		Safe”)
		when the Universal Monitor has power.
		Each of the eight input connections is a two-state point:	4.0:	Wiring and Connections -
L - Digital input				Main Board
		ON/OFF (energized/de-energized).	4.2.1: Connecting Digital Inputs
connectors
		An example of a field digital input point is a leak detector.	7.5:	View Input Status
			9.3:	Setup System - Setup Input
M - Digital input status		Each input has an LED to indicate its status: ON/OFF	1.9:	LED Indicators
LEDs		(energized/de-energized).
N - Analog ground		Connection for an externally powered analog sensor that	4.3.2: Connecting the Analog
connector		needs a reference to ground.		Ground
		Each of the four input connections accepts a 4/20 mA	4.0:	Wiring and Connections -
O - Analog input			4.3:	Main Board
		signal.		Connecting Analog Inputs
connectors		An example of a field analog input point is a temperature	7.5:	View Input Status
		sensor.	9.5:	Setup System - Setup
				Sensor
P - 12VDC/24VDC		One jumper to select voltage supplied for two-wire analog	4.3.1: Setting the 12VDC/24VDC
		sensors. The jumper supplies all four analog input
analog input jumper				Analog Power Jumper
		connectors with the same voltage. Factory default is 24VDC.
Q - SiteScan Web		Connection to monitor Universal Monitor from Liebert’s	4.0:	Wiring and Connections -
			4.5:	Main Board
connector (EIA422)		SiteScan Web graphical monitoring package.		EIA422 SiteScan Web
				Connector
		Connection to optional Expansion Board (purchased	4.0:	Wiring and Connections -
R - EIA485 connector				Main Board
		separately). Connect maximum of one Expansion Board.	5.3.1: Connect EIA485 Connectors
				to Main Board
S - Serial interface		Connection for laptop or video terminal. Used for	4.6.1: RS232 Connector
		configuration and monitoring using the Service Terminal
connector (RS232/			A.2:	Connecting to the Service
		Interface. Requires a null modem cable for connectivity
EIA574)				Terminal Interface
		(P/N 201258P1).
			4.6.2: Phone Line Connector
		Connection for phone line. Used for pager notifications,	9.8:	Setup System - Setup
				Modem & Pagers
T - Phone line		service phone number, and configuration and monitoring
			9.9.6: Setup Serv Ph Num - Enter
connector		using the Service Terminal Interface. Requires an RJ11
				Phone Number
		connector.
			A.2:	Connecting to the Service
				Terminal Interface
		115VAC power receptacle to power laptop during	2.4.2: Termination and Mounting -
U - Power receptacle				Large Enclosure
		configuration and diagnostics. Receptacle not available on
(Transformer Module)			4.0:	Wiring and Connections -
		230VAC Transformer Module.
				Main Board
V - Power On/Off			2.4.2: Termination and Mounting -
		Power switch to turn power On/Off to both Transformer		Large Enclosure
switch (Transformer
		Module 24VAC connectors and power receptacle.	4.0:	Wiring and Connections -
Module)
				Main Board
		One of the two 24VAC connectors for power (the second is	2.4.2: Termination and Mounting -
W - 24VAC connector				Large Enclosure
		also on the right side of the Transformer Module near the
(Transformer Module)			4.0:	Wiring and Connections -
		top). Each connector is rated for 40VA.
				Main Board
X - Modem		On-board modem with 9600 baud rate.	9.8:	Setup System - Setup
				Modem & Pagers
Y - Modem status LEDs		Indicates the operational status of the modem.	1.9:	LED Indicators
Z - DIP switch 1		DIP switch used for resetting password to default.	9.9.1: Change Password
AA - LCD connector		Connection for the LCD on the enclosure door.	N/A
BB - LCD contrast		Adjustment contrast for the LCD on the enclosure door.	N/A
adjustment
CC - Battery pack		Connection for battery pack lead.	2.4.3: Connecting the Battery Pack
connector
DD - 24VAC power		Power connection for the controller. Requires 24VAC.	2.4:	Connect Power to the
connector				Universal Monitor
EE - Transformer		Transformer Module used to convert 115VAC or 230VAC	2.4.2: Termination and Mounting -
Module		to 24VAC. Available only in the large enclosure.		Large Enclosure

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