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Liebert NX series User Manual

Liebert NX series
44 pages
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POWER AVAILABILITY
NX™ UPS
OPERATION & MAINTENANCE MANUAL
10-30kVA
208V, 60Hz

Table of Contents

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Liebert NX series Specifications

General IconGeneral
Frequency50/60 Hz
DisplayLCD
TopologyDouble Conversion
Input Voltage208/220 VAC
Output Voltage208/220 VAC
CommunicationSNMP
Operating Temperature0 to 40°C
Battery TypeVRLA
Humidity0 to 95% (non-condensing)
DimensionsVaries by model. See product documentation.
WeightVaries by model. See product documentation.
Storage Temperature-15-50°C (5-122°F)

Summary

General Description of Liebert NX UPS

Introduction to Liebert NX UPS

Overview of the Liebert NX UPS system and its purpose for business-critical equipment.

Bypass Supplies Functionality

Explains the function of the static switch and manual bypass for load transfer.

Liebert NX UPS Operating Modes

Details the Normal, Battery, Bypass, and Maintenance modes of operation.

Operator Control and Display Panel

Operator Control Panel Overview

Describes the functions of the control panel and the Liquid Crystal Display (LCD).

Display Panel Layout Details

Details the components and layout of the control panel's display.

Mimic Display Indicator Guide

Explains the meaning and states of the six indicators on the mimic display.

Control Button Functions

Describes the functions of the EPO, INVERTER ON/OFF, and FAULT CLEAR buttons.

Alarm Buzzer Functionality

Explains the different sounds produced by the alarm buzzer.

LCD Screen Overview and Sections

Details the five main sections of the LCD display and their content.

Navigation Key Operations

Explains the function of the F1-F4 and HELP navigation keys.

UPS System Information Display

Describes the system information displayed on the LCD, including model and status.

LCD Menus and Data Items Guide

Outlines the categories of information and settings available via LCD menus.

Language Selection for LCD

Guides on how to select the display language for the LCD interface.

Setting Current Date and Time

Instructions on how to set the system's current date and time.

Understanding UPS Status Messages

Explains how to interpret current status and history log messages.

Types of LCD Screens Explained

Provides a quick guide to the main types of LCD screens on the UPS.

Opening Display Screen

Describes the initial display screen shown when the UPS begins powering up.

Default Screen Display

Shows the default screen that appears after the UPS powers up and completes self-test.

UPS Help Screen Access

Instructions on how to access the help information screen via the HELP key.

Screen Saver Window Behavior

Describes the screen saver window that appears after a period of inactivity.

Understanding Pop-Up Windows

Explains various pop-up prompt windows requiring user confirmation or action.

Bypass to Inverter Transfer with Interruption

Details the process of transferring to inverter mode with a power interruption.

Inverter to Bypass Transfer with Interruption

Details the process of transferring to bypass mode with a power interruption.

System Self-Test Result Window

Describes the pop-up window reporting the results of a system self-test.

Battery Capacity Test Confirmation Prompt

Explains the prompt asking for confirmation before starting a battery capacity test.

Operating Instructions for Liebert NX UPS

NX UPS Operating Modes

Details the four operating modes of the NX UPS and how to switch between them.

UPS Power Switches Identification

Identifies and explains the function of the main power switches within the UPS.

UPS Start-Up Procedure

Covers the general procedure and requirements for starting the UPS.

Detailed UPS Start-Up Steps

Provides step-by-step instructions for starting the UPS from a powered-down state.

Verifying Operation Mode Switching

Explains how to verify successful switching between different UPS operation modes.

Switching to Maintenance Bypass

Procedure to transfer the load from the inverter to the Maintenance Bypass line.

Completely Powering Down the UPS

Steps required to completely power down the UPS unit.

Shutting Down UPS While Maintaining Load Power

How to shut down the UPS while ensuring continuous power to the load.

Emergency Shutdown with EPO

Explains the function and procedure for Emergency Power Off (EPO) shutdown.

Auto Restart Functionality

Describes the auto restart feature after a power failure and EOD.

Resetting After Shutdown or Faults

Procedure to restore the UPS to regular operation after EPO or specific faults.

Optional Equipment and Configurations

Communication and User Terminals

Overview of communication options and user terminals for UPS integration.

External Battery Temperature Interface

Details the connection for an optional external battery temperature sensor.

Analog Input Interface

Explains the function and specifications of the analog input channels.

Power Output for Accessories

Describes the power output available for connecting accessories like modems.

RS232 Communication Interface

Details the RS232 communication ports available on the UPS.

RS485 Communication Interface

Details the RS485 communication ports available on the UPS.

Intellislot Communication Slots

Explains the Intellislot communication slots for installing optional cards.

LBS Mode (Load Bus Synchronization)

Describes the Load Bus Synchronization functionality for dual UPS systems.

Optional Battery Start Function

Explains the optional feature allowing the UPS to start using battery power.

Appendix A: UPS Status Messages

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