Emerson GXT4-3000RT230, GXT4-700RT230E, GXT4-1000RT230, GXT4-1500RT230, GXT4-1000RT230E User Manual

Liebert® GXT4

User Manual – 700VA ~ 3000VA (230V)

™

Important Safety Precautions

Warning

Observe all cautions and warnings in this manual. Failure to do so may result in serious injury or death.
Refer all UPS and battery service to properly trained and qualified service personnel. Do not attempt to service

this product yourself.
Opening or removing the cover may expose you to lethal voltages within this unit even when it is apparently not

operating and the input wiring is disconnected from the electrical source. Never work alone.

Save These Instructions

This manual contains important safety instructions that must be followed during the installation and maintenance
of the UPS and batteries. Read this manual thoroughly before attempting to install or operate this UPS.

UPS Safety Notes

This UPS contains no user-serviceable parts except the internal battery pack. Do not continue to use the UPS if
the front panel indications are not in accordance with these operating instructions or if the UPS performance
alters in use. Refer all faults to your local dealer, Emerson Network Power representative or Emerson Network
Power Channel Support.

This UPS has an internal battery, and the output receptacles of the UPS may carry live voltage even if the UPS
is not connected to utility input power.

Before moving or rewiring this UPS, disconnect utility input power and the battery and make sure that the UPS is
completely shut down. Otherwise, the output terminal may carry live voltage, presenting an electric shock
hazard.

To ensure human safety and normal UPS operation, the UPS must be properly grounded before use. When the
UPS is connected to an IT power distribution system, a short-circuit protection device must be installed on the
neutral line.

Install and use the Liebert GXT4 UPS in the following environments:

 Temperature: 32°F ~ 104°F (0°C ~ 40°C), relative humidity: 0% ~ 95% non-condensing
 Out of direct sunlight
 Away from heat sources
 Stable surface, not subject to vibrations or shocks
 Away from dust and other particulates
 Away from corrosive substances, salts and flammable gases

Keep the air inlet and outlet of this UPS unobstructed. Poor ventilation will increase the internal temperature of
the UPS and can adversely affect the UPS and its batteries.

Keep liquid and foreign objects away from the UPS.
In case of fire, use a dry chemical fire extinguisher to put out the fire. Using a fluid fire extinguisher may cause

electric shock.
This UPS is not intended for use with life support and other designated critical devices. Maximum load must not

exceed that shown on the UPS rating label. This UPS is designed for data processing equipment. If uncertain,
consult your local dealer or Emerson representative.

Battery Safety Notes

 Caution

1. Do not dispose of batteries in a fire. The batteries may explode.

2. Do not open or mutilate the batteries. Released electrolyte is toxic and is harmful to skin and eyes.

3. Dispose of used batteries according to the instructions.

 Caution

A battery can present a risk of electrical shock and high short circuit current. The following precautions should be observed
when working on batteries:

 Remove watches, rings and other metal objects.
 Use tools with insulated handles.
 Wear rubber gloves and boots.
 Do not lay tools or metal parts on top of batteries.
 Disconnect charging source prior to connecting or disconnecting battery terminals.
 Determine if the battery is inadvertently grounded. If it is inadvertently grounded, remove the source of the ground.

Contact with any part of a grounded battery can result in electrical shock. The likelihood of such shock will be
reduced if grounds are removed during installation and maintenance (applicable to a UPS and a remote battery supply
not having a grounded supply circuit).

ELECTROMAGNETIC COMPATIBILITY—The Liebert GXT4 UPS complies with the limits for a CLASS A
DIGITAL DEVICE. Operating this device in a residential area is likely to cause harmful interference that users
must correct at their own expense.

The Liebert GXT4 UPS series complies with the requirements of EMC Directive 2004/108/EC and the published
technical standards. Continued compliance requires installation in accordance with these instructions and use of
accessories approved by Emerson.

Information For The Protection Of The Environment

UPS Servicing: UPS makes use of components dangerous for the environment (electronic cards, electronic
components). The components removed must be taken to specialized collection and disposal centers.

NOTICE TO EUROPEAN UNION CUSTOMERS: DISPOSAL OF OLD APPLIANCES—This product has been
supplied from an environmentally aware manufacturer that complies with the Waste Electrical and Electronic
Equipment (WEEE) Directive 2002/96/CE.

The ‘crossed-out wheelie bin’ symbol at right is placed on this product to
encourage you to recycle wherever possible. Please be environmentally
responsible and recycle this product through your recycling facility at its end of
life. Do not dispose of this product as unsorted municipal waste. Follow local
municipal waste ordinances for proper disposal provisions to reduce the
environmental impact of waste electrical and electronic equipment (WEEE). For
information regarding the scrapping of this equipment, please browse
http://www.eu.emersonnetworkpower.com (‘ Products session ’ or ‘Contact us’
session) or call our worldwide technical support.

 Toll Free: 00 80011554499
 Toll Number Based in Italy: [phone]

Glossary Of Symbols

Risk of electrical shock

Indicates caution followed by important instructions

AC input

AC output

Requests the user to consult the manual

Indicates the unit contains a valve-regulated lead acid battery

Recycle

DC voltage

Equipment grounding conductor

Bonded to ground

AC voltage

WEEE

Contents

Chapter 1 Product Description ............................................................................................................................................ 1

1.1 Features ................................................................................................................................................................ 1

1.2 Available Models ................................................................................................................................................... 1

1.3 Appearance And Components .............................................................................................................................. 2

1.3.1 Front Panel and Controls ........................................................................................................................... 2

1.3.2 Rear Panel Features ................................................................................................................................. 2

1.4 Operating Principle ............................................................................................................................................... 3

1.5 Operating Mode .................................................................................................................................................... 4

Chapter 2 Installation .......................................................................................................................................................... 6

2.1 Unpacking And Inspection .................................................................................................................................... 6

2.2 What’s Included .................................................................................................................................................... 6

2.3 Preparation For Installation ................................................................................................................................... 6

2.3.1 Installation Environment ............................................................................................................................ 6

2.3.2 Installation Clearances .............................................................................................................................. 7

2.4 Mechanical Installation .......................................................................................................................................... 7

2.4.1 Tower Installation ...................................................................................................................................... 7

2.4.2 Rack Installation ........................................................................................................................................ 8

2.5 Cable Connection ............................................................................................................................................... 11

2.5.1 Connecting Input Cable And Loads ......................................................................................................... 11

2.5.2 Connecting Battery Cable ........................................................................................................................ 12

2.5.3 Connecting Communication Cables ........................................................................................................ 13

Chapter 3 Operation And Display Panel ........................................................................................................................... 14

3.1 LED Indicators .................................................................................................................................................... 14

3.2 Control Buttons ................................................................................................................................................... 14

3.3 LCD Display Panel .............................................................................................................................................. 15

3.3.1 Startup Screen ......................................................................................................................................... 15

3.3.2 ON Screen ............................................................................................................................................... 15

3.3.3 Default Screen ......................................................................................................................................... 16

3.3.4 Main Menu Screen .................................................................................................................................. 16

3.3.5 Prompt List .............................................................................................................................................. 22

3.3.6 Warning List ............................................................................................................................................. 23

3.3.7 Fault List .................................................................................................................................................. 23

Chapter 4 Operating Instruction ........................................................................................................................................ 25

4.1 Startup Checklist For The Liebert GXT4 ............................................................................................................. 25

4.2 Starting The UPS ................................................................................................................................................ 25

4.3 Manual Battery Test ............................................................................................................................................ 25

4.4 Manual Bypass ................................................................................................................................................... 25

4.5 Shut Down The Liebert GXT4 ............................................................................................................................. 25

4.6 Disconnecting Input Power From The Liebert GXT4 ........................................................................................... 26

Chapter 5 Communication ................................................................................................................................................. 27

5.1 Liebert IntelliSlot Port Communication ................................................................................................................ 27

5.2 USB Port Communication ................................................................................................................................... 27

5.3 RS232 Port Communication ............................................................................................................................... 28

5.4 Terminal Block Communication .......................................................................................................................... 28

5.4.1 Any Mode Shutdown ............................................................................................................................... 28

5.4.2 Battery Mode Shutdown .......................................................................................................................... 29

5.4.3 On Battery Mode ..................................................................................................................................... 29

5.4.4 Low Battery .............................................................................................................................................. 29

Chapter 6 Maintenance ..................................................................................................................................................... 30

6.1 Replacing The Internal Battery Pack ................................................................................................................... 30

6.2 Battery Charging ................................................................................................................................................. 32

6.3 Precautions ......................................................................................................................................................... 32

6.4 Checking UPS Status ......................................................................................................................................... 32

6.5 Checking UPS Functions .................................................................................................................................... 32

Chapter 7 Troubleshooting ................................................................................................................................................ 33

7.1 UPS Symptoms................................................................................................................................................... 33

7.1.1 Indicator And LCD Display Panel ............................................................................................................ 33

7.1.2 Audible Alarm .......................................................................................................................................... 33

7.2 Troubleshooting .................................................................................................................................................. 34

Chapter 8 Battery Cabinet ................................................................................................................................................. 35

Chapter 9 Specifications ................................................................................................................................................... 36

Chapter 10 Product Warranty Registration ........................................................................................................................ 40

The Liebert GXT4 UPS is a compact, online uninterruptible power system that continuously conditions and regulates
its output voltage. The UPS is designed to supply microcomputers and other sensitive equipment with clean sine
wave input power.

Upon generation, AC power is clean and stable. However, during transmission and distribution it is subject to voltage
sags, spikes and complete failure that may interrupt computer operations, cause data loss and damage equipment.
The Liebert GXT4 protects equipment from these disturbances. The Liebert GXT4 continuously charges its batteries
from utility power, enabling it to supply power to connected loads, even when utility power fails.

This chapter describes the UPS on its features, available models, appearance and components, operating principle
and operating mode.

1.1 Features

 LCD humanized display interface, enabling you to view the UPS status and change the UPS settings
 Programmable output receptacles to prolong the power supply time for priority loads
 Intelligent battery management to extend the battery life
 Flexible network management with Liebert MultiLink™ software
 Fan fault self-inspection and automated diagnostic function
 Intelligent fan operation, automatically changing rotation speed depending on system requirements, to decrease

power consumption and noise

 Input circuit breaker to ease recovery from overloads
 CE and GS mark, safety approval from CE
 Communication options: USB port, RS232 port, Liebert IntelliSlot® port and terminal block communication
 Dry contacts for remote monitoring
 Input power factor greater than 0.99
 Output voltage selection function

Chapter 1 Product Description 1

Chapter 1 Product Description

1.2 Available Models

Seven UPS models are available.

Table 1-1 UPS models and power ratings

Model Nominal power rating

GXT4-700RT230 700VA/630W
GXT4-1000RT230 1000VA/900W
GXT4-1500RT230 1500VA/1350W
GXT4-2000RT230 2000VA/1800W
GXT4-3000RT230 3000VA/2700W
GXT4-700RT230E 700VA/630W

GXT4-1000RT230E 1000VA/900W
GXT4-1500RT230E 1500VA/1350W
GXT4-2000RT230E 2000VA/1800W
GXT4-3000RT230E 3000VA/2700W

Liebert GXT4 UPS 700VA ~ 3000VA (230V) User Manual

2 Chapter 1 Product Description

1.3 Appearance And Components

The Liebert GXT4 rack/tower models in various power ratings have the same general appearance, controls and
features (see Figure 1-1). The various rack/tower models differ largely in the type of receptacles each has.

1.3.1 Front Panel and Controls

The front panel of the Liebert GXT4 UPS is shown in Figure 1-1.

1.3.2 Rear Panel Features

The rear panel of the Liebert GXT4 UPS has these features, as shown in Figure 1-2 ~ Figure 1-4.

1. Liebert IntelliSlot port 2. USB port

3. Input circuit breaker 4. Input receptacle

5. General output receptacles 6. Programmable output receptacle 2

7.Terminal block 8. RS232 port

9. Cooling fan 10. External battery connector

11. Fixing holes for line buckle 12. Programmable output receptacle 1

13. Output circuit breaker (only for GXT4-3000RT230 and GXT4-3000RT230E)

Figure 1-

1 Liebert GXT4 UPS (rack/tower models, front view)

Figure 1-

LiebertIntelliSlotport

Drycontact

2 Rear panel of GXT4-700RT230, GXT4-1000RT230, GXT4-1500RT230 and GXT4-2000RT230

USBport

RS232port

Inputcircuitbreaker

Coolingfan

Figure 1-

Outputcircuitbreakers

Externalbattery

connector

3 Rear panel of GXT4-3000RT230

Generaloutput

receptacle(2pcs)

Programmableoutput

receptacle2(2pcs)

Programmableoutput

receptacle1(2pcs)

Liebert GXT4 UPS 700VA ~ 3000VA (230V) User Manual

Generaloutput
receptacle

Inputreceptacle

1.4 Operating Principle

The operating principle of the UPS is illustrated in Figure 1-4.

Input Output

Chapter 1 Product Description 3

Dynamic Bypass

L1 L1

L2/N L2/N

G G

TVSS & EMI/RFI

Filters

Rectifier/PFC Inverter

DC-to-DC
Converter

BatteryBattery Charger

Figure 1-4 Operating principle diagram

The UPS is composed of utility input, TVSS and EMI/RFI filters, rectifier/PFC, inverter, battery charger, DC-to-DC
converter, battery, dynamic bypass and UPS output.

Transient voltage surge suppression (TVSS) and EMI/RFI filters

The Liebert GXT4 UPS has surge protection and filters that protect the connected load from power surges,
electromagnetic interference (EMI) and radio frequency interference (RFI). These features can minimize any surges
or interference present in the utility power. The filters also prevent surges or interference generated by the UPS from
adversely affecting devices connected on the same branch as the UPS.

Rectifier/Power factor correction (PFC) circuit

In normal operation, the Liebert GXT4’s rectifier/power factor correction (PFC) circuit converts utility power to
regulated DC power for use by the inverter while ensuring that the wave shape of the input current used by the UPS
is near ideal. Extracting this sine wave input current achieves two objectives:

 Efficient power use by the UPS
 Reduced reflected harmonics

This results in cleaner power being available to other devices in the building not being protected by the Liebert GXT4
UPS.

Inverter

In normal operation, the Liebert GXT4 UPS’s inverter utilizes the DC output of the PFC to produce precise, regulated
sine wave AC power. When utility power fails, the inverter receives DC power from the DC-to-DC converter. In either
operation mode, the UPS inverter is online, continuously generating clean, precise, regulated AC output power.

Battery charger

The battery charger utilizes energy from the utility power and precisely regulates it to continuously float charge the
batteries. The batteries are being charged whenever the Liebert GXT4 UPS is plugged in, even when the UPS is not
turned on.

DC-to-DC converter

The DC-to-DC converter raises the DC voltage from the battery to the optimum operating voltage for the inverter. This
allows the inverter to operate continuously at its optimum efficiency and voltage, thus increasing reliability.

Liebert GXT4 UPS 700VA ~ 3000VA (230V) User Manual

4 Chapter 1 Product Description

Battery

The Liebert GXT4 UPS uses valve-regulated, nonspillable, lead acid batteries. To maintain the battery design life,
operate the Liebert GXT4 UPS in an ambient temperature of 32°F to 77°F (0°C to 25°C).

Optional external battery cabinets are available to extend battery run time.

Dynamic bypass

The Liebert GXT4 UPS provides an alternate path for utility power to the connected loads in the unlikely event of a
UPS malfunction. Should the Liebert GXT4 UPS have an overload, over temperature or UPS failure condition, the
UPS automatically transfers the connected loads to bypass.

 Note

The bypass power path does not protect the connected loads from disturbances on the utility power.

1.5 Operating Mode

The UPS operation modes include: Utility (AC) mode, Manual Bypass mode, Battery mode, Battery Recharge mode,
Frequency Converter mode and Green mode.

For the descriptions of indicators and control buttons in this section, refer to Chapter 3 Operation And Display
Panel.

Utility (AC) mode

During Utility (AC) mode, utility power provides energy to the Liebert GXT4 UPS. The filters, PFC circuit and the
inverter process this power to provide computer-grade power to connected loads. Meanwhile, the UPS m aintains the
batteries in a fully charged state.

Manual Bypass mode

Manual bypass mode occurs when you select Main Menu -> 3 CONTROL -> 1 TURN ON & OFF to enter the TURN
ON & OFF screen, and select ‘TURN UPS BYPASS’ while the Liebert GXT4 UPS is in Utilit y (AC) mode. Bypass
operation is indicated by an audible alarm and an illuminated b ypass indicator. “UPS in Bypass operation” will be
displayed in the LCD display panel. During manual bypass mode, utility power bypasses the inverter and provides
energy to the connected load.

 Caution

Turning off the UPS in Bypass mode will result in loss of output power and dropped loads.

Battery mode

The Liebert GXT4 enters Battery mode when utility power fails or is outside acceptable values. The battery system
supplies power through the DC-to-DC converter to the inverter to generate clean AC power for the connected loads.

When the Liebert GXT4 enters Battery mode, the UPS sounds a half-second beep at 10-second intervals. W hen
approximately 2 minutes of run time remains, the beeps sound every 5 seconds to warn that the battery is getting low
(This Low Battery Warning is user-configurable).

In Battery mode, the battery indicator will illuminate, and “Utility power not available” will be displayed in the LCD
display panel.

For approximate battery run time, refer to Table 9-5 in Chapter 9 Specifications. The battery run time is based on
resistive load and an ambient temperature of 77°F (25°C). To increase the time, turn off non-priority loads (such as
idle computers and monitors) or add optional external battery cabinets.

 Caution

1. Turning off the Liebert GXT4 when it is in Battery Mode will result in loss of output power.

2. If the UPS is turned off manually, it must be manually restarted after utility power returns.

3. If the UPS is turned off by a communication signal or because the batteries are depleted, it will operate as selected in the
configuration program for Auto-Restart (Refer to Configuration program in 5.2 USB Port Communication).

Liebert GXT4 UPS 700VA ~ 3000VA (230V) User Manual

Chapter 1 Product Description 5

Battery Recharge mode

Once utility power is applied to the Liebert GXT4, the battery charger begins charging the batteries.

Frequency Converter mode

All models of the Liebert GXT4 are capable of frequency conversion. Frequency Conver sion mode can be selected
using the configuration program or LCD. Allowable frequency operating modes include:

 Auto Sensing - 50Hz or 60Hz – Bypass Enabled
 Auto Sensing - 50Hz or 60Hz – Bypass Disabled
 Frequency Converter - 50Hz – Bypass Disabled
 Frequency Converter - 60Hz – Bypass Disabled

The default for all models of the Liebert GXT4 is ‘Auto Sensing - 50Hz or 60Hz – Bypass Enabled’.

Green mode

All models of the Liebert GXT4 are capable of operating in Green mode. Green mode can be selected using the
configuration program or LCD display panel. Allowable green modes include:

 Green mode ‘Off’ (Online mode, that is, Utility (AC) mode)
 Green mode ‘On’
 Green mode ‘Auto’

The default for all models of the Liebert GXT4 is: Green mode ‘Off’.

Liebert GXT4 UPS 700VA ~ 3000VA (230V) User Manual

6 Chapter 2 Installation

Chapter 2 Installation

This chapter expounds the installation of the UPS, including unpacking and inspection, included items, preparation for
installation, mechanical installation and cable connection.

2.1 Unpacking And Inspection

Unpack the UPS and conduct the following checks:

1. Inspect the UPS for shipping damage. If any shipping damage is found, report it to the carrier and your local dealer
or your Emerson representative immediately.

2. Check the accessories included in packaging list. If there is any discrepancy, contact your local dealer or your
Emerson representative immediately.

2.2 What’s Included

With GXT4 UPS:

 Compact disk with: Liebert MultiLink, Configuration Program, User Manual
 Terminal Block Communication terminals
 USB cable: one, 6-1/2 ft. (2m) long
 RS232 cable: one, 6-1/2 ft. (2m) long
 Mounting hardware: including screws, two handles and a pair of slide rails
 Plastic tower stand sets: 2 (four pieces)
 Line buckle: 2 pieces
 The anti-skid rubber cushion and instructions
 Safety Instructions
 GXT4 2000-3000RT230 will ship with the following items included in the box:

A (1) Schucko to IEC-320-C19 input cords
B (1) UK to IEC-320-C19 input cords
C (1) Australian type A to SAA Input cords (except Europe model without Bundle rack slide kit)

 For models 700VA – 1500VA 230V models will ship with the following items included in the box:

A (1) Australian type A to SAA Input cords (except Europe model without Bundle rack slide kit)

 GXT4 500-1500VA will ship with (2) 10A IEC C13 C14 Output Cable 2m
 GXT4 2000-3000VA will ship with (3) 10A IEC C13 C14 Output Cable 2m

 Note

1. The Liebert GXT4 external battery cabinet shipping package includes one battery cabinet, two spacers for tower installation
and one DC power cable.

2. The RS232 cable is exclusively used for Liebert GXT4 UPS.

2.3 Preparation For Installation

2.3.1 Installation Environment

1. Install the UPS indoors in a controlled environment, where it cannot be accidentally turned off. The installation
environment should meet the specifications listed in Chapter 9 Specifications.

Liebert GXT4 UPS 700VA ~ 3000VA (230V) User Manual

2. Place it in an area of unrestricted airflow around the unit, away from water, flammable liquids, gases, corrosives,
and conductive contaminants. Avoid direct sunlight.

 Note

Operating the Liebert GXT4 UPS in temperatures above 77°F (25°C) reduces battery life.

2.3.2 Installation Clearances

Maintain at least 4 inches (100mm) clearance in the front and rear of the Liebert GXT4. Do not obstruct the air inlets
on the front panel and rear panel of the UPS; blocking the air inlets reduces ventilation and heat dissipation,
shortening the service life of the Liebert GXT4.

2.4 Mechanical Installation

The Liebert GXT4 may be installed as a tower or in a rack, depending on space and use considerations.
The Liebert GXT4 UPS may be used alone, as a single UPS, or with up to six battery cabinets.

 Note

While installing the UPS or making input and output connections, comp l y with all relev ant safety codes and standards.

Chapter 2 Installation 7

2.4.1 Tower Installation

To install the Liebert GXT4 as a tower:

1. Take out the support bases from the accessories (see Figure 2-1).

2. If optional Liebert external battery cabinets will be connected to the Liebert GXT4 UPS, take out the spacers
shipped with the battery cabinet.

3. Connect the spacers and the support bases as shown in Figure 2-2. Each Liebert GXT4 UPS needs two
assembled support bases, one in the front and one in the rear.

4. Adjust the direction of the operation and display panel and logo on the Liebert GXT4.

1) Remove the front plastic bezel cover as shown in Figure 2-3.

Figure 2-1 Support bases

Spacer

Figure 2-2 Support bases with spacers

Fastening

Support base

Front plastic

bezel cover

Liebert GXT4 UPS 700VA ~ 3000VA (230V) User Manual

UPS

Figure 2-3 Remove the front plastic bezel cover