Emerson 480V Output Dry Contacts, Output dry contact relays, Inverter mode relay center

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Electrical Connections

2.3.4Output Dry Contacts

There are three output dry contact relays at the X1 slot (see Figure 9 and Table 4).

Figure 9 Output dry contacts and EPO wiring for firmware before M170

X1

 

J13

 

 

J21

 

 

J25

 

BFP C

BFP S

BFP O

INV C

INV S

INV O

ACF C

ACF S

ACF O

NOTE: The black square on each slot indicates Pin 1.

Table 4

Output dry contact relays

 

 

 

Position

Name

Description

 

 

 

J13.2

BFP_O

Bypass feedback protection relay. Normally open. Closed when bypass SCR is shorted.

 

 

 

J13.3

BFP_S

Bypass feedback protection relay center

 

 

 

J13.4

BFP_C

Bypass feedback protection relay. Normally closed. Open when bypass SCR is shorted.

 

 

 

J21.2

INV_O

Inverter mode relay. Normally open. Closed when UPS is in inverter mode.

 

 

 

J21.3

INV_S

Inverter mode relay center

 

 

 

J21.4

INV_C

Inverter mode relay. Normally closed. Open when UPS is in inverter mode.

 

 

 

J25.2

ACF_O

Main input fault relay. Normally open. Closed when main input is in fault.

 

 

 

J25.3

ACF_S

Main input fault relay center

 

 

 

J25.4

ACF_C

Main input fault relay. Normally closed. Open when main input is in fault.

 

 

 

NOTE

All auxiliary cables of terminal must be double-insulated. Wire should be 20-16AWG stranded for maximum runs between 82 and 197 feet (25-60m), respectively.

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Contents Liebert NX UPS Page Table of Contents UPS Specifications OptionsOperator Control and Display Panel Pop-Up Windows Operating InstructionsAppendix a UPS Status Messages Specifications and Technical DataTables Page Important Safety Instructions Battery Cabinet Precautions Glossary of Symbols External Inspections InstallationInternal Inspections Preliminary ChecksUPS Location Special Considerations for Parallel Systems Battery LocationConsiderations in Moving the Liebert NX Mechanical ConsiderationsSystem Composition Floor InstallationClearances Cable EntryCabinet arrangement-Liebert NX units and battery cabinets UPS Power Cabling Cable RatingLug Size and Torque Requirements Cabling Guidelines UPS Input ConfigurationInput and output busbars Cable ConnectionsSafety Ground Protective DevicesUPS Rectifier and Bypass Input Supply Dual Input Connections Cabling ProcedureOutput System Connections-Ensure Correct Phase Rotation Common Input ConnectionsFrequency Converter Mode Monitor Board FeaturesControl Cables Dry Contacts Input dry contacts at Maintenance Bypass Cabinet InterfaceMaintenance bypass cabinet interface Input Dry ContactsBCB control interface BCB Control InterfaceOutput dry contact relays Inverter mode relay centerMain input fault relay center Output Dry ContactsEPO Input-Optional EPO input contact relaysIndicates Pin Introduction SafetyBattery Cabinets External Battery Cabinet InstallationConnecting the Batteries Installation ConsiderationsInsulated Post Tray Handle For Cabling Connecting the Battery Cabinet to the UPS Non-Standard BatteriesBCB Shunt Trip Alber Monitoring System-Optional This power must be UPS protectedLBS Cable LBS Cable and SettingsLoad Bus Synchronization Performance RequirementsConfiguring Parallel System Operation Features of Parallel SystemGeneral Installing Parallel System Operating Principles Redundancy ParallelingOperation Modes Summary Preliminary Checks Cabinet InstallationPower Cables Conditions for Parallel SystemInterconnecting Auxiliary Dry Contact CablesCables Q1Ext Q2Ext QBypTo Load Normally Closed EPO Normally Open EPOConformity and Standards UPS Mechanical CharacteristicsEnvironmental characteristics UPS mechanical characteristicsUPS terminal UPS Electrical CharacteristicsBattery Manufacturer Models Supplied Rectifier input powerLiebert approved replacement batteries Rated Power kVA 100 120DC Intermediate Circuit Inverter OutputBypass Input Left Side GND Left Side View Front View Max. Door Swing U3819205 Batt Ext530628 Pg , Rev External Battery Cabinet Battery BreakerAuxiliary Contacts Top Top Front Right Side System Front RearRear FRONTOutput Run From Conductors AC Output Ph A, B, C System InputPh A, B, C UPS Inputs Ph A, B, C UPS OutputsUtility UPS #1-UPS #4 Module AC Ph A, B, C UPS Inputs Ph A, B, C System OutputsGround UPS U3819301 Isometric ViewGeneral Description Single module block diagram dual input configurationBypass Supplies Normal ModeBattery Mode Bypass ModeParallel Redundancy Mode System Expansion Maintenance ModeDisplay Panel Layout Operator Control PanelDetailed view of control panel Mimic indicators Control buttons Navigation keysMimic display status indicators Mimic Display IndicatorsControl buttons Control ButtonsLCD Overview Audible BuzzerDescription of items in UPS system window Navigation KeysUPS System Information Icons for navigation keysLCD Menus and Data Items Input Descriptions of UPS menus and data window itemsMenu Type Item Type Explanation MainsStart/stop Battery Language SelectionTests Set date and time Current Date and TimeCurrent status and history log records UPS Status MessagesDefault Screen Types of LCD ScreensOpening Display Screen Saver Window UPS Help ScreenPop-Up Windows UPS operating modes Liebert NX Operating ModesCircuit breakers Circuit BreakersStartup Procedure Indicator StateUPS Startup Switch from Bypass Mode to Normal Mode Switch from Normal Mode to Bypass ModeMaintenance Bypass Procedure and Powering Down the UPS Emergency Shutdown With EPO Auto RestartBattery End-of-Discharge EOD Protection Battery ProtectionMulti-Module System Procedures Battery Undervoltage Pre-WarningTie breaker LED Function Status Inserting One Module into a Multi-Module SystemCommissioning a Parallel System Shutdown Procedure-Complete UPS and Load ShutdownParallel System Start Up Liebert IntelliSlot Communication Power OutputCommunication and Other User Terminals Analog Input InterfaceBaud Rates See 10.1.5 ConfiguringLiebert NX communication options CommentsConfiguring Baud Rates Liebert IntelliSlot Web card display Pin Function Operation Relay Card pin configurationRelay card jumper configuration Relay CardMultiPort 4 Card AssignmentPin Description Remote Alarm Monitor LBS Mode-Load Bus SynchronizationReplacing Dust Filters Cable Lengths Floor to Connection Point Inside UPS Torque specificationsBattery torque rating Lug Size and Torque RequirementsParallel system current table Distance to connection points on the Liebert NX UPSExternal cabinet dimensions, including side panels Cable size and tightening torquesLead/Lag ratings 250 10 N*m Estimated battery run time, minutes Battery Run TimesServices at 800-543-2378 for assistance UPS status messagesEvent Message Description / Suggested Action if any Software according to the customer’s agreement High ambient air temperatureBypass voltage is beyond the normal range Bypass voltage exceeds the limitCondition is removed Error can also leads to the alarmAlarm if applicable Inverter STS FailEPO Emergency Power OffUPS status messages UPS Status Messages Page That Ne tIti Ti n
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480V specifications

The Emerson 480V power systems play a critical role in modern industrial applications, providing reliable and efficient power distribution. These systems are designed for facilities that require robust performance and operational efficiency while adhering to safety regulations. With voltage ratings at 480V, they cater primarily to industries such as manufacturing, data centers, and commercial buildings.

One of the main features of the Emerson 480V systems is their scalability. These systems can be easily adapted and expanded as operational demands grow, thereby reducing initial investment costs and providing a flexible solution for evolving business needs. This ability to scale is crucial in a fast-paced environment where demands can change rapidly.

The Emerson 480V systems also incorporate advanced technologies for improved performance and safety. One key technology is the use of smart grid solutions. This enables real-time monitoring, diagnostics, and control, allowing facility managers to optimize energy consumption and reduce operational costs. Furthermore, these systems often include integrated protection devices that enhance safety measures by minimizing the risk of electrical faults, overloads, or short circuits.

Energy efficiency is another characteristic that distinguishes Emerson 480V systems from traditional alternatives. With advanced power management features, these systems effectively reduce energy waste and lower electricity bills. Emerson’s commitment to sustainability is evident in its designs, which aim to minimize environmental impact through energy-efficient technologies.

The build quality of Emerson 480V systems is also noteworthy. They are designed to withstand harsh industrial environments and are constructed with high-grade materials that promote longevity and reliability. The modular design allows for easy maintenance and repair, which further extends the lifespan of the system.

Additionally, Emerson 480V systems are equipped with user-friendly interfaces that facilitate ease of operation. This ensures that operators can efficiently manage and control power distribution without extensive training. The combination of performance, scalability, safety features, and user-centric design makes Emerson 480V systems an ideal choice for businesses looking to enhance their electrical infrastructure.

In summary, Emerson 480V power systems are a leading solution for industrial power distribution, characterized by their scalability, smart technology integration, energy efficiency, robust build quality, and user-friendly operation. These attributes make them a valuable investment for any organization aiming to improve its electrical management and operational performance.
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