Emerson 240V, 208 user manual Repo Connection, Repo switch connections

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Installation

2.3.3REPO Connection

The Nfinity is equipped with a Remote Emergency Power Off (REPO) connection.

NOTE

A jumper is factory installed between pins 1 & 2 to disable the Control Switch (SW2). This will prevent the unit from being started during installation. This jumper must be removed in order to start the unit.

Figure 2 REPO switch connections

Hanger for cable-tie to strain relief REPO wiring

REPO switch on rear of unit

REPO jumper				REPO connections				REPO connections
	connected			for normally open				for normally closed
	as shipped			switch system				switch system (fail-safe)
1	2	3	4	1	2	3	4	1	2	3	4

NOTE

Remove jumper before wiring.

If the installation does not require connection to a REPO system, the jumper must be removed.

Key to REPO switch connections

1.24 V DC, 50mA

2.Sense

3.Sense

4.Ground

! CAUTION

To maintain safety, Signal Edge Low Voltage (SELV) barriers, and electromagnetic compatibility, signal cables should be segregated and run separately from power cables.

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Contents Nfinity Power System Page Table of Contents Figures Important Safety Instructions Glossary of Symbols Standard Components FeaturesGeneral Description System DescriptionFront and back views Nfinity weight and dimensionsBypass Mode Normal ModeBackup Mode Auto Restart ModeSystem Control Module Major ComponentsUnit Frame User Interface ModuleBattery Module Power ModuleSite Preparation Required Setup EquipmentInspection EnvironmentUnloading the UPS UnloadingStationary Mounting Wiring Preparation Cable InstallationConfiguring the Bypass Voltage TB2 Output Wiring TB3 Input Wiring TB1Grounding Conductor Installation Bypass Voltage Jumper Position TB2 Connecting to External Panel Boards208 VAC Setup 1 208 VACSetup 2 120 VAC Setup 3 240 VACRepo Connection Repo switch connectionsCOM2 Serial CommunicationsCOM Ports COM1 Relay ContactsButtons Controls and IndicatorsFault/Warning and Status LEDs Display ControlsNavigating the Menu Status LED ModesShutting Down the UPS Operating ProceduresStart-Up and Initialization Manual Transfer to BypassDisplay Date/Time UPS Status Event Log Module ReplacementUPS Configuration Active Alarms Service Tools Main MenuUPS Status Screen UPS Configuration Screen Review Settings Change Settings Change Configuration Settings Change Settings MenuStart Day Auto Restart ModeAuto Restart Delay IntervalThreshold DST ModeAlarm Mode Set Date/TimeGuarantee Shutdown Enable Service Mode UPS Configuration Screen Service Mode MenuDisplay Date/Time Event Log Active AlarmsTransfer to Bypass Module Replacement Clear Failures Service Tools for Liebert Global Services EngineersUser Interface Text Cause Action Active AlarmsOperation Control Module Power ModuleBattery Module Guide to LEDs Module LED IndicationRemoving Modules Module ReplacementReplacing the User Interface Adding or Replacing ModulesReplacing Fan Filters MaintenanceScheduled Maintenance Proper CareSpecifications Product Warranty RegistrationSpecifications Page Company Behind the Products Technical Support/ServiceLocations