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

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: +39 0298250222

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

Chapter 1 Product Description 1 Chapter 1 Product Description 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 1.2 Available Models Seven UPS models are available. Table 1-1 UPS models and power ratings Model GXT4-700RT230 GXT4-1000RT230 GXT4-1500RT230 GXT4-2000RT230 GXT4-3000RT230 GXT4-700RT230E GXT4-1000RT230E GXT4-1500RT230E GXT4-2000RT230E GXT4-3000RT230E Nominal power rating 700VA/630W 1000VA/900W 1500VA/1350W 2000VA/1800W 3000VA/2700W 700VA/630W 1000VA/900W 1500VA/1350W 2000VA/1800W 3000VA/2700W

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. Figure 1-1 Liebert GXT4 UPS (rack/tower models, front view) 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 1-2 Rear panel of GXT4-700RT230, GXT4-1000RT230, GXT4-1500RT230 and GXT4-2000RT230 Liebert IntelliSlot port USB port Input circuit breaker Output circuit breakers Programmable output receptacle 2 (2pcs) General output receptacle Dry contact RS232 port Cooling fan External battery connector General output receptacle (2 pcs) Programmable output receptacle 1 (2pcs) Input receptacle Figure 1-3 Rear panel of GXT4-3000RT230

Chapter 1 Product Description 3 1.4 Operating Principle The operating principle of the UPS is illustrated in Figure 1-4. Input Output Dynamic Bypass L1 TVSS & EMI/RFI Filters Rectifier/PFC Inverter L1 DC-to-DC Converter Battery Charger Battery L2/N G L2/N G 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.

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 maintains 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 Utility (AC) mode. Bypass operation is indicated by an audible alarm and an illuminated bypass 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. When 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).

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 Conversion 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.

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.

Chapter 2 Installation 7 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, comply with all relevant safety codes and standards. 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). Figure 2-1 Support bases 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. Spacer Fastening Support base Figure 2-2 Support bases with spacers 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. Front plastic bezel cover UPS Figure 2-3 Remove the front plastic bezel cover

8 Chapter 2 Installation 2) Pull the operation and display panel gently, rotate it 90 degrees clockwise and snap it back into position, as shown in Figure 2-4. Operation and display panel 90-degree rotation clockwise Figure 2-4 Rotate the operation and display panel 3) Pull the logo on the front plastic bezel cover gently, rotate it 90 degrees clockwise and snap it back into position. The rotated front plastic bezel cover is shown in Figure 2-5. 4) Replace the front plastic bezel cover on the Liebert GXT4. At this point, the UPS operation and display panel and logo have been rotated 90 degrees clockwise, which provides upright viewing for users. 5. Place the Liebert GXT4 and any battery cabinets on the support bases. Each Liebert GXT4 needs two support bases, as shown in Figure 2-5. UPS UPS Battery cabinet Support base Support base Figure 2-5 Tower installation 2.4.2 Rack Installation Note When the Liebert GXT4 UPS is installed in a rack, it must be supported by a shelf, fixed rails or slide rails on each side. The factory-supplied brackets cannot support the weight of the UPS. They are used to move the UPS into and out of the rack and attach the UPS to the rack. To install a Liebert GXT4 rack/tower UPS in a rack: 1. Unpack the two slide rails assemblies (B1) and two handles, M4 & M5 pan head screws (A1 & A2) and M4 & M5 countersunk head screws (S1 & S2) from the accessories of UPS and battery cabinet. Their appearances are shown in Figure 2-6. B1 (2 pcs) B2 (2 pcs) 8mm 16mm 8mm 14mm A1 (16 pcs) A2 (4 pcs) S1 (8 pcs) S2 (8 pcs) Figure 2-6 Rack-mounting kit and accessories

Note B1 includes inner member, front and rear members. They are interchangeable between left-hand or right-hand. Chapter 2 Installation 9 2. Remove inner member of each B1 by extending it to its outermost position, depressing the retaining latch and then pulling out the inner member from B1, as shown in Figure 2-7. Pull out Rear member Inner member Front member Retaining latch Figure 2-7 Pulling out inner member from each B1 3. Determine the mounting position inside the rack inside the racks vertical rails. Caution Reduce the risk of tipping the rack by installing the Liebert GXT3 as low as possible in the rack. 4. Attach the rear member of each B1 to the rack vertical poles with two factory-supplied S2, as shown in Figure 2-8. Vertical pole S2 (4 pcs) Rear member Front member Figure 2-8 Installing rear member of each B1 5. Extend the B1 by sliding the front member forward until it touches the rack s front vertical poles (adjustable length: 18 inches ~ 32 inches (457mm ~ 813mm)). Use two S2 to fix each front member onto the front vertical poles through the installation holes. Make sure that the two pieces of B1 are at the same mounting height on all four rack vertical poles, as shown in Figure 2-9.

Liebe rt.gxt3 AC Power 30 00VA! +- 1 2 10 Chapter 2 Installation Front vertical pole Front member Slide A Rear member B S2 (2 pcs) S2 (2 pcs) A amplified B amplified Figure 2-9 Installing front member of each B1 6. Fasten rear member and front member together using four A1 and four M4 nuts (M4 nuts have been factory-installed on the rear member) for each B1, as shown in Figure 2-10. Rear member A1 (8 pcs) M4 nut (8 pcs) Front member Figure 2-10 Fastening rear member and front member together 7. Fasten the inner members pulled from B1 in step 2 onto the UPS on both sides with eight A1 from the accessories. Make sure that the retaining latch is near the rear of the UPS, as shown in Figure 2-11. UPS Inner member Retaining latch A1 (8 pcs) Figure 2-11 Installing inner members 8. Use eight S1 to install the provided B2 on both sides of the UPS, as shown in Figure 2-12.

Liebert.GXT3 AC Po wer 30 00VA! +- 1 2 Chapter 2 Installation 11 UPS B2 (2 pcs) S1 (8 pcs) Figure 2-12 Installing B2 9. Insert the UPS, with inner members attached, into B1 by inserting top and bottom edges of inner members into the top and bottom, curved tracks of front members and sliding the UPS into the rack, as shown in Figure 2-13. Insert Front member Inner member Note Figure 2-13 Inserting the UPS 1. Ends of inner members are tapered to allow rear of the UPS to be angled upward before insertion, if space allows. 2. The UPS should move smoothly into B1. If not, recheck alignment of front and rear members from step 4 to step 6. 3. Factory-supplied rack handles are not intended to be used to lift the UPS. These are intended to be used to slide the UPS into and out of the rack. 10. Through B2, use four A2 from the accessories to secure front of the UPS to rack EIA rails to prevent the UPS from sliding out of position. 11. If optional Liebert external battery cabinets are connected to the UPS, they can be placed all on one side of the UPS or stacked beneath the UPS. The installation procedures are the same as those of the UPS. 2.5 Cable Connection The Liebert GXT4 rear panel has an input receptacle, output receptacles. Refer to 1.3.2 Rear Panel Features for details. The battery cables are supplied with the battery cabinet. 2.5.1 Connecting Input Cable And Loads Note 1. Ensure that all the loads are turned off. 2. Prepare an input power supply that is properly protected by a circuit breaker in accordance with national and local electrical codes. The wall receptacle must be grounded. 3. The input cable is intended to serve as the disconnect device. The socket-outlet must be installed near the equipment and must be easily accessible. 4. Emerson recommends installing an upstream circuit breaker of the same series as the Liebert GXT4 s input circuit breaker. The specification of input circuit breaker on the UPS rear panel is given in Table 2-1.

12 Chapter 2 Installation Table 2-1 Specification of input circuit breaker Model GXT4-700RT230 GXT4-1000RT230 GXT4-1500RT230 GXT4-2000RT230 GXT4-3000RT230 GXT4-700RT230E GXT4-1000RT230E GXT4-1500RT230E GXT4-2000RT230E GXT4-3000RT230E Rated circuit breaker 10A 10A 10A 16A 16A 10A 10A 10A 16A 16A 1. Plug all loads into the output receptacles on the rear panel of the Liebert GXT4. Note 1. Distribute loads evenly across all receptacles to prevent overloading individual receptacles. 2. Output cable length should not exceed 32.8 ft (10m). 3. The priority load can be connected to the general output receptacle and fixed by a line buckle (see Figure 2-14) to prevent the output cable from loosening and dropping. Hold the output cable Insert it into the fixing hole for line buckle Figure 2-14 Line buckle 2. Insert the input cable of Liebert GXT4 into the input power connection. 2.5.2 Connecting Battery Cable 1. Switch Off the input breaker of the battery cabinet. 2. Take out the battery cable included with the battery cabinet. 3. Connect one end of the battery cable to the external battery connector on the rear panel of the UPS, and connect the other end to any battery port on the rear panel of the external battery cabinet, as shown in Figure 2-15. Figure 2-15 Connecting the battery cable 4. Switch on the battery breaker on the rear of the external battery cabinet. 5. Use the Configuration Program included with the UPS to specify the number of external battery cabinets connected to the Liebert GXT4. For approximate battery run time, see Table 9-4 in Chapter 9 Specifications.

Chapter 2 Installation 13 2.5.3 Connecting Communication Cables Communication cable connection includes: USB communication cable, RS232 communication cable and optional card cables. Connecting USB communication cable 1. Take the USB communication cable out of the accessories box. 2. Insert one end of the USB communication cable to the USB port on the rear panel of the Liebert GXT4 (see Figures 1-2 and 1-4). 3. Insert the other end of the USB communication cable to the USB port of the computer. Connecting RS232 communication cable 1. Take the RS232 communication cable out of the accessories box. 2. Insert one end of the RS232 communication cable to the RS232 port on the rear panel of the Liebert GXT4 (see Figures 1-2 and 1-4). 3. Insert the other end of the RS232 communication cable to the RS232 port of the computer. Installing the Optional Liebert IntelliSlot Card and Communication Cables 1. Remove the protective cover of the Liebert IntelliSlot port on the Liebert GXT4 and set it aside. 2. Insert the Liebert IntelliSlot card into the Liebert IntelliSlot port and secure it with screws. 3. To connect any cable associated with a Liebert IntelliSlot card, refer to the user manual provided with the card. To configure and use the Liebert IntelliSlot communication card, refer to the card s user manual. Manuals for the various Liebert IntelliSlot cards are available at Liebert s Web site: www.liebert.com

14 Chapter 3 Operation And Display Panel Chapter 3 Operation And Display Panel This chapter describes the operation and display panel of the Liebert GXT4, including LED indicators, control buttons and LCD display panel. The operation and display panel is on the front panel of the Liebert GXT4 (see Figure 1-1), which provides four control buttons, seven LED indicators and a LCD display panel, as shown in Figure 3-1. Inverter indicator Battery indicator Fault indicator Bypass indicator LCD display panel Programmable outlet1 indicator Programmable outlet2 indicator Green mode indicator ESC button ENTER button UP button DOWN button Figure 3-1 Operation and display panel 3.1 LED Indicators The operation and display panel provides seven LED indicators: inverter indicator, bypass indicator, battery indicator, fault indicator, programmable outlet1 indicator, programmable outlet2 indicator, and green mode indicator. Their descriptions are listed in Table 3-1. Table 3-1 LED indicators LED Indicators LED color Description Inverter indicator Green On when the inverter is supplying power, and off otherwise Bypass indicator Amber On when the load is supplied by the mains through automatic/manual bypass, and off otherwise Battery indicator Amber On when the load is supplied by the battery, and off otherwise Fault indicator Red On when an error has occurred within the UPS, and off otherwise Programmable outlet1 indicator Green On when programmable outlet1 is on, and off otherwise Programmable outlet2 indicator Green On when programmable outlet2 is on, and off otherwise Green mode indicator Green On when the UPS is in green mode, and off otherwise Caution Do not switch off the UPS or switch from online to bypass, otherwise the loads will no longer be supported. 3.2 Control Buttons The operation and display panel provides four control buttons: ESC button, UP button, DOWN button and ENTER button. Their descriptions are listed in Table 3-2.

Chapter 3 Operation And Display Panel 15 Control buttons ESC button UP button DOWN button ENTER button Table 3-2 Control buttons Description Pressing this button returns to the previous menu or aborts any change in the input data field before confirming Pressing this button can move the cursor up or increase the value displayed in the input data field. When a menu is displayed on several screens, pressing the button can scroll up Pressing this button can move the cursor down or decrease the value displayed in the input data field. When a menu is displayed on several screens, pressing the button can scroll down Pressing this button can enter the next level menu or confirm the parameter setting value 3.3 LCD Display Panel The operation and display panel provides a LCD display panel, enabling you to view the UPS status and change the UPS settings. 3.3.1 Startup Screen When the UPS is starting up, the UPS begins self-testing, and then the LCD display panel will display EMERSON icon for about 10s, as shown in Figure 3-2. Figure 3-2 Startup screen 3.3.2 ON Screen About 10s later, the LCD display panel will display the corresponding ON screen depending on whether the AC is available, as shown in Figure 3-3. Figure 3-3 Startup screen AC NOT AVAILABLE START ON BATTERY? YES NO O/P: 0V 0HZ 0.0A I/P : 0V 0HZ 0.0A BATT: 100% 320MINS LOAD: 0% Select YES and press the ENTER button, the UPS will start up, and the LCD display panel will display UPS STARTING, and will display START SUCCESSFUL after UPS is turned ON, as shown in Figure 3-4. Figure 3-4 STARING and STATTUP SUCCESSFUL screen

16 Chapter 3 Operation And Display Panel 3.3.3 Default Screen Press any button in the STATTUP SUCCESSFULLY screen to enter the default interface, as shown in Figure 3-5. Figure 3-5 Default screen In the default screen, the LCD display panel will display the UPS model, operation mode (ONLINE, GREEN, GREEN AUTO, and BYPASS), output parameters, input parameters, battery capacity and load percentage. If no control button is pressed within two minutes, the LCD display panel will enter a screen-protection state (the back lighting is off) until any control button is pressed. 3.3.4 Main Menu Screen Press any button in the default screen to enter the Main Menu screen, as shown in Figure 3-6. 1 STATUS 2 CONFIGURATION 3 CONTROL 4 LOG 5 ABOUT Figure 3-6 Main Menu screen To select a submenu, press the UP or DOWN button to move the cursor to the required item, and press the ENTER button to enter its submenu or set its parameter. STATUS screen Select Main Menu -> 1 STATUS to enter the STATUS screen, displaying OUTPUT, LOAD, INPUT, BATTERY and TIME SINCE STARTUP, as shown in Figure 3-7. OUTPUT VOLTAGE : 120V FREQUENCY : 60HZ CURRENT : 17.6A POWER : 2112KWH BATTERY CAPACITY : 90% RUNTIME : 100MINS VOLTAGE : 80V TIME SINCE STARTUP 05D 15H 30M Figure 3-7 STATUS screen CONFIGURATION screen Select Main Menu -> 2 CONFIGURATION to enter the CONFIGURATION screen. This menu has eight submenus, as shown in Figure 3-8.

Chapter 3 Operation And Display Panel 17 1 UPS 2 BATTERY 3 OPERATION MODE 4 OUTLET1 5 OUTLET2 6 LCD 7 FACTORY DEFAULT Figure 3-8 CONFIGURATION screen In the CONFIGURATION screen, press the UP or DOWN button to move the cursor to the required item, and press the ENTER button to enter its submenu or set its parameter. 1. UPS screen Select Main Menu -> 2 CONFIGURATION -> 1 UPS to enter the UPS screen. This menu has four screens, as shown in Figure 3-9. Figure 3-9 UPS screen Press the UP or DOWN button to move the cursor to the required item, and press the ENTER button to confirm the settings. 2. BATTERY screen Select Main Menu -> 2 CONFIGURATION -> 2 BATTERY to enter the BATTERY screen. This menu has five submenus, as shown in Figure 3-10. BATT REPLACE TIME 2 0 1 2 Y 1 2 M 1 2 D Figure 3-10 BATTERY screen Press the UP or DOWN button to increase or decrease the value of the settings, and press the ENTER button to confirm it. 3. OPERATION MODE screen Select Main Menu -> 2 CONFIGURATION -> 3 OPERATION MODE to enter the OPERATION MODE screen, as shown in Figure 3-11. Figure 3-11 OPERATION MODE screen

18 Chapter 3 Operation And Display Panel Press the UP or DOWN button to move the cursor to the required item, and press the ENTER button to confirm the settings. 4. OUTLET1 screen Select Main Menu -> 2 CONFIGURATION -> 4 OUTLET1 to enter the OUTLET1 screen. This menu has two submenus, as shown in Figure 3-12. Figure 3-12 OUTLET1 screen 1) Select 1 OUTLET CONTROL and press the ENTER button to enter the OUTLET CONTROL screen, as shown in Figure 3-13. Outlet control is on Outlet control is off Figure 3-13 OUTLET CONTROL screen Press the UP or DOWN button to move the cursor to the required item, and press the ENTER button to confirm the settings. 2) Select 2 OUTLET SETTING and press the ENTER button to enter the OUTLET SETTING screen, as shown in Figure 3-14. Figure 3-14 OUTLET SETTING screen Press the UP or DOWN button to move the cursor to the required item, and press the ENTER button to confirm the settings. 5. OUTLET2 screen The OUTLET2 screen is the same as the OUTLET1 screen. You can also set the same settings as OUTLET1 screen. Select YES and press the ENTER button in the screen shown in Figure 3-15, the OUTLET2 screen will apply the same settings as the OUTLET1 screen.

Chapter 3 Operation And Display Panel 19 Figure 3-15 OUTLET2 setting screen 6. LCD screen Select Main Menu -> 2 CONFIGURATION -> 6 LCD to enter the LCD screen. This menu has two submenus, as shown in Figure 3-16. Figure 3-16 LCD screen 1) Select 1 LANGUAGE and press the ENTER button to enter the LANGUAGE screen, as shown in Figure 3-17. Figure 3-17 LANGUAGE screen 2) Select 2 COLOR and press the ENTER button to enter the COLOR screen, as shown in Figure 3-18. EMERSON EMERSON EMERSON EMERSON Figure 3-18 COLOR screen 7. FACTORY DEFAULT screen Select Main Menu -> 2 CONFIGURATION -> 7 FACTORY DEFAULT to enter the FACTORY DEFAULT screen, as shown in Figure 3-19. CONTROL Screen Figure 3-19 FACTORY DEFAULT screen Select Main Menu -> 3 CONTROL to enter the CONTROL screen, as shown in Figure 3-20.

20 Chapter 3 Operation And Display Panel Figure 3-20 CONTROL screen In the CONTROL screen, press the UP or DOWN button to move the cursor to the required item, and press the ENTER button to enter its submenu. 1. TURN ON & OFF screen Select Main Menu -> 3 CONTROL -> 1 TURN ON & OFF to enter the TURN ON & OFF screen, as shown in Figure 3-21. TURN UPS ON The UPS is off The UPS is on Figure 3-21 TURN ON & OFF screen 2. ALARM CONTROL screen Select Main Menu -> 3 CONTROL -> 2 ALARM CONTROL to enter the ALARM CONTROL screen, as shown in Figure 3-22. Figure 3-22 ALARM CONTROL screen 3. BATT TEST screen Select Main Menu -> 3 CONTROL -> 3 BATT TEST to enter the BATT TEST screen, as shown in Figure 3-23. LOG Screen Figure 3-23 BATT TEST screen Select Main Menu -> 4 LOG to enter the LOG screen, as shown in Figure 3-24. Figure 3-24 LOG screen

Chapter 3 Operation And Display Panel 21 1. Select Main Menu -> 4 LOG -> 1 EVENT LOG to enter the EVENT LOG screen, as shown in Figure 3-25. Figure 3-25 EVENT LOG screen Select 1 ALL and all logs will be displayed, as shown in Figure 3-26. A maximum of one log can be displayed in a screen, displaying the nature and time of the event. 254/255 255 OD 1H 17M AGO UPS switch to Online mode Figure 3-26 ALL LOG screen 2. Select Main Menu -> 4 LOG -> 2 CLEAR LOG to enter the CLEAR LOG screen, as shown in Figure 3-27. Figure 3-27 CLEAR LOG screen Press the UP or DOWN button to move the cursor to the required item, and press the ENTER button to confirm the settings. ABOUT Screen Select Main Menu -> 5 ABOUT to enter the ABOUT screen, as shown in Figure 3-28. Figure 3-28 ABOUT screen The ABOUT screen displays: UPS model, SN, software version and hardware version. Menu structure The menu structure of the LCD display panel is shown in Figure 3-29.

22 Chapter 3 Operation And Display Panel Figure 3-29 Menu structure 3.3.5 Prompt List A prompt screen is displayed during the operation of the system to alert you to certain conditions and/or to require your confirmation of a command or other operation. The prompts and meanings are given in Table 3-3. Table 3-3 Prompts and meanings No. Prompt Meanings 1 Utility power restored The utility power recovers, and the UPS transfers back to Utility (AC) mode 2 UPS return from a low battery condition The UPS transfers back to Utility (AC) mode from Battery low mode 3 UPS return from battery mode The UPS transfers back to Utility (AC) mode from Battery mode 4 UPS self test successful The UPS self-test is successfully performed 5 UPS self test in progress The UPS is performing self-test 6 UPS turn off The UPS shuts down and has no output 7 UPS TURN ON The UPS starts up successfully and supplies power to the load

Chapter 3 Operation And Display Panel 23 No. Prompt Meanings 8 UPS shutdown process had been cancelled The shutdown command sent through Multilink or SNMP card to the UPS is cancelled 9 UPS reboot Reboot the UPS through Multilink or SNMP card 10 UPS switch to Green mode The UPS transfers back to Green mode, saving more electricity 11 UPS switch to Auto Green mode When the input utility power satisfies the condition of Auto Green mode, the UPS will transfer back to Auto Green mode 12 UPS switch to Online mode The UPS transfers back to Online mode, supplying power to the load through the inverter 13 UPS internal temperature return to normal The internal temperature of the UPS recovers to normal range 14 UPS load return from overload 15 UPS in OnLine operation 16 Beeper Disable 17 Beeper Enable 18 OUTLET1 Closed Auto / Manual 19 OUTLET1 Open Auto / Manual 20 OUTLET2 Closed Auto / Manual 21 OUTLET2 Open Auto / Manual The loads are reduced, and the UPS recovers to normal state from overload The UPS is operating in Online mode, supplying power to the load through the inverter The beeper is disabled, and no audible alarm will be generated when faults or warnings occur again The beeper is enabled, and audible alarms will be generated when faults or warnings occur again The programmable output receptacle 1 receives turn-off command and is turned off The programmable output receptacle 1 receives turn-on command and is turned on The programmable output receptacle 2 receives turn-off command and is turned off The programmable output receptacle 2 receives turn-on command and is turned on 3.3.6 Warning List All UPS warning messages are described in Table 3-4. Table 3-4 Warning list No. Warning Description 1 Utility power not available The utility power is not available, or it cannot satisfy the requirements for the UPS to operate 2 UPS batteries low and exhausted soon The battery capacity is low and will be exhausted soon 3 UPS has switched to battery mode 4 UPS SWITCH TO BYPASS The utility power is abnormal or the PFC side is faulty, the UPS transfers back to Battery mode The UPS transfers back to Bypass mode, at this point, the input utility power supplies power to the load directly, and the load is not protected 5 UPS in Bypass operation The UPS is operating in Bypass mode, at this point, the input utility power supplies power to the load directly, and the load is not protected 6 Start-up voltage Low The start-up voltage is low 3.3.7 Fault List All UPS fault messages are described in Table 3-5. Table 3-5 Fault list No. Fault Description 1 UPS self test failed The battery is bad or weak 2 UPS shutdown command received The UPS shuts down through communication 3 UPS overload The UPS is overloaded 4 Inverter Out of Order The inverter is faulty 5 Battery Weak/Bad The battery is bad or weak 6 Output Short-circuit The output connection is short-circuited 7 DC Bus Over-voltage The DC bus is faulty

24 Chapter 3 Operation And Display Panel No. Fault Description 8 UPS Over-temperature Over-temperature occurs to the UPS and the UPS will transfer to Bypass mode 9 Charger Out of Order The charger is faulty 10 Fan Out of Order At least one fan is faulty 11 DC Bus Discharge Fail DCDC failure occurs If a fault occurs, the UPS automatically switches to Bypass mode. Only in the case of a battery disconnection fault will the original operating mode be maintained. The fault message alternates with UPS mode once a second, the red fault indicator on the operation and display panel lights up and the alarm sounds continuously. If a fault occurs, proceed as follows: 1. Enter the ALARM CONTROL screen (see Figure 3-22), and select AUDIABLE ALARM ON or AUDIBLE ALARM OFF to switch on/off the alarm. 2. Enter the EVENT LOG screen (see Figure 3-25), and select 3 CRITICAL to view the fault log. Note Please wait patiently when you enter the EVENT LOG screen to view the historical fault log. Because the LCD display panel needs to read the faults from the DSP at a relatively slow reading speed, the reading time depends on the uploaded information quantity.

Chapter 4 Operating Instruction 25 Chapter 4 Operating Instruction This section describes checks before starting the UPS, how to start the UPS, manual battery test, manual bypass, shutting down the UPS and disconnecting the utility power from the UPS. Note The Liebert GXT4 s battery has been fully charged before delivery, but some charge will be lost during storage and shipping. To ensure that the battery has adequate reserve power to protect the connected load, charge the battery for three hours before putting the UPS into service. 4.1 Startup Checklist For The Liebert GXT4 Before starting the UPS, perform these checks: 1. Check that the input plugs and loads are connected properly and reliably. 2. Check that the battery cable is connected properly. 3. Check that the communication cables are connected properly. 4.2 Starting The UPS 1. Turn On the input circuit breaker (see Figure 1-2 ~ Figure 1-4 for its position). 2. Select Main Menu -> 3 CONTROL -> 1 TURN ON & OFF to enter the TURN ON & OFF screen, and select TURN UPS ON to turn on the UPS. 3. Turn on the connected loads. 4. Check the status indicators to determine whether the Liebert GXT4 is operating normally. 5. Check the load level on LCD to verify that the connected load does not exceed the UPS rated capacity. The UPS is now providing conditioned power to the loads. 4.3 Manual Battery Test Select Main Menu -> 3 CONTROL -> 3 BATT TEST to enter the BATT TEST screen, and select 1 START to start manual battery test. 4.4 Manual Bypass Select Main Menu -> 3 CONTROL -> 1 TURN ON & OFF to enter the TURN ON & OFF screen, and select TURN UPS BYPASS to transfer the UPS to bypass. If the internal bypass is not available due to voltage or frequency, the bypass operation will be ignored. 4.5 Shut Down The Liebert GXT4 Select Main Menu -> 3 CONTROL -> 1 TURN ON & OFF to enter the TURN ON & OFF screen, and select TURN UPS OFF to turn off the UPS. Power to the connected loads is now Off.

Chapter 4 Operating Instruction 4.6 Disconnecting Input Power From The Liebert GXT4 1. Once the UPS has been shut down as detailed in 4.5 Shut Down The Liebert GXT4, disconnect the input cable plug. 2. Wait 30 seconds and verify that all indicators have turned Off and the fan has stopped, this indicates that the power-off is complete. 3. Turn the external battery cabinet breaker switch to the Off position if the UPS has an external battery cabinet. After powering Off the UPS, the UPS ceases output and the load is powered off.

Chapter 5 Communication 27 Chapter 5 Communication This section describes UPS communication over the four types of communication connections on the rear panel of the Liebert GXT4: Liebert IntelliSlot port USB port (standard B-type) RS232 port Terminal Block Communication Caution To maintain safety (SELV) barriers and for electromagnetic compatibility, signal cables should be segregated and run separately from all other power cables. 5.1 Liebert IntelliSlot Port Communication Optional cards The Liebert IntelliSlot port accepts one optional card: Liebert IntelliSlot SNMP Card. The Liebert IntelliSlot SNMP Card provides SNMP monitoring and control of the UPS across the network. Follow instructions provided with the Liebert IntelliSlot card to configure Liebert MultiLink, the UPS or any additional ancillary product for the Liebert GXT4 UPS. These instructions are available at multilink.liebert.com. Liebert MultiLink Liebert MultiLink monitors the UPS continuously and can shut down your computer or server in the event of an extended power failure. Liebert MultiLink can also be configured to shut down the UPS. Liebert s MultiLink can also be configured for use without the USB cable or RS232 cable when the Liebert IntelliSlot SNMP Card or Liebert IntelliSlot Web Card is installed in the UPS. An optional Liebert MultiLink License Kit permits shutting down the UPS over a network. For more information about the Liebert IntelliSlot SNMP Card, Liebert IntelliSlot Web Card and Liebert MultiLink license kits, visit the Liebert Web site (www.liebert.com) or contact your local Emerson representative. 5.2 USB Port Communication The standard B-type USB port is used to connect the UPS and network server or other computer system using Liebert MultiLink. Configuration program can be accessed through the communication port. Configuration program Accessing the Configuration Program via USB port is a new feature of the Liebert GXT4. For most users, the factory default settings will be adequate. This section illustrates the features available for modification, as well as the factory default setting. The USB configuration program allows these features of the Liebert GXT4 to be changed: Enable/Disable Auto-Restart Select frequency converter operation with a fixed output frequency of 50Hz or 60Hz, bypass disabled Set the Low Battery Warning alarm time from 2 to 30 minutes Enable/Disable the Auto-Battery test Enable/Disable Auto-Restart after removing Remote Shutdown Set the wiring mode of Remote Shutdown Set the Auto-Enable output Set the Auto-Battery test to 8, 12, 16, 20, 26 weeks Select the number of external battery cabinets connected to the UPS to adjust the remaining run time calculated by Liebert software products

28 Chapter 5 Communication Select one of multiple output voltages to match various voltages, see Table 5-1. Table 5-1 Output voltage option UPS model Factory default, Vac Output voltage option, Vac GXT4-700RT230 ~ GXT4-3000RT230 230 220/230/240 GXT4-700RT230E ~ GXT4-3000RT230E 230 220/230/240 Warning The output voltage settings cannot be changed while the UPS is on and powering connected loads. Note For all 230V models, when the output voltage is programmed for 220Vac, the UPS will be automatically derated as follows (refer to Chapter 9 Specifications for VA and watt ratings): 700VA ~ 1000VA: derated to 96% of both the VA and Watt ratings. Note 1. This program is compatible with UPS models beginning with GXT4, as in GXT4-3000RT230. It is not compatible with earlier versions of the Liebert GXT UPS. 2. A computer running Windows 2000, XP, Vista, Windows 7 is required to set up and run the configuration program. 5.3 RS232 Port Communication The RS232 port is used to connect the UPS with network server or other computer system using Liebert MultiLink. 5.4 Terminal Block Communication The Terminal Block includes eight pins, as shown in Figure 5-1. 1 2 3 4 5 6 7 8 Any Mode Shutdown Battery Mode Shutdown On Battery Mode Low Battery Figure 5-1 Terminal block communication pin layout 5.4.1 Any Mode Shutdown The purpose of Any Mode Shutdown is to shut down the UPS output by turning off the rectifier, inverter and bypass so that there is no power to the loads. Any Mode Shutdown can be operated locally and remotely, as described as follows: Local Any Mode Shutdown can be performed by shorting Pin1 and Pin2. Remote Any Mode Shutdown can be performed by a switch connected to Pin1 and Pin2 and mounted at a remote location. Note 1. Remote Power off will be performed either by NO or NC contact of Any Mode Shutdown, depending on the settings in the configuration program. 2. A current-limited source (+12Vdc, 50mA) will be available from the UPS. 3. The connection to the UPS for remote connection will be via terminal block connector. 4. Any Mode Shutdown wiring must conform to all national, regional and local wiring regulations.

Warning Chapter 5 Communication 29 When the Auto-Enable output option is selected and the UPS output is disabled using Pin1 and Pin2, the Liebert GXT4 s output can turn on automatically without warning if the Pin1 and Pin2 connection is changed. 5.4.2 Battery Mode Shutdown Battery Mode Shutdown permits shutting down the UPS by turning off the rectifier, inverter and bypass so that there is no power to the load when the UPS is On Battery. Battery Mode Shutdown can be performed locally or remotely: Local Any Mode Shutdown can be performed by shorting Pin 3 and Pin 4. Remote Any Mode Shutdown can be achieved by a switch connected to Pin 3 and Pin 4 and mounted at a remote location. Note 1. Remote Power off will be performed by NO contact. 2. A current-limited source (+12Vdc, 50mA) will be available from UPS. 3. The connection to the Liebert GXT4 for remote connection will be via terminal block connector. 4. Battery mode shutdown wiring will follow all national, regional and local wiring regulations. 5. This signal must last for 1.5 seconds or longer. 6. A battery shutdown signal will not cause an immediate shutdown. It will start a 2 minute shut down timer. This timer cannot be stopped once triggered. If utility power returns during this countdown, the Liebert GXT4 will still shut down and must remain shutdown for 10 seconds. Whether the UPS turns back on when the power is restored depends on the auto-restart setting. 5.4.3 On Battery Mode On Battery signal is a Normally Open (NO) dry contact. When the UPS is supplying output power from the battery, this dry contact will be closed. 5.4.4 Low Battery Low Battery signal is a Normally Open (NO) dry contact. When the UPS is supplying output power from the battery and has reached the Low Battery Warning time selected in the configuration program, this dry contact will be closed. Note The rated values for the dry contacts for the On Battery and Low Battery signals are: 1. Rated voltage: 30V (AC or DC) 2. Rated current: 300mA

30 Chapter 6 Maintenance Chapter 6 Maintenance This section describes replacing the internal battery pack, battery charging, precautions, checking the Liebert GXT4 s status and checking UPS functions. Note The battery can present a risk of electrical shock and high short circuit current. The following precautions should be observed before replacing the battery pack: 1. Remove rings, watches and other metal objects. 2. Use tools with insulated handles. 3. Do not lay tools or other metal objects on the batteries. 4. If the battery kit is damaged in any way or shows signs of leakage, contact your local Emerson representative immediately. 5. Do not dispose of batteries in a fire. The batteries may explode. 6. Handle, transport and recycle batteries in accordance with local regulations. 6.1 Replacing The Internal Battery Pack The Liebert GXT4 is designed to allow the trained personnel to replace the internal battery pack safely. Refer to Table 6-1 for internal battery pack part numbers for Liebert GXT4: Table 6-1 Replacement internal battery pack model number UPS model number Replacement internal battery pack model Quantity required Liebert GXT4-700RT230 & GXT4-700RT230E GXT4-5A48BATKIT 1 Liebert GXT4-1000RT230 & GXT4-1000RT230E GXT4-5A48BATKIT 1 Liebert GXT4-1500RT230 & GXT4-1500RT230E GXT4-7A48BATKIT 1 Liebert GXT4-2000RT230 & GXT4-2000RT230E GXT4-9A48BATKIT 1 Liebert GXT4-3000RT230 & GXT4-3000RT230E GXT4-9A72BATKIT 1 Read all safety cautions before proceeding. Contact your local dealer or Emerson representative to obtain the part number and pricing of the appropriate replacement battery pack. Note Risk of explosion exists if battery is replaced by an incorrect type. Dispose of used batteries according to the instructions. Battery replacement procedures 1. Remove the front plastic bezel cover from the UPS. 2. Loosen and remove the four screws on the battery door, as shown in Figure 6-1.

Chapter 6 Maintenance 31 Battery door Screw (6 pcs) Front plastic bezel cover Figure 6-1 Removing the front bezel cover and battery door 3. Lay the battery door and screws aside for reassembly. 4. Gently pull the battery wire out and disconnect the battery plug and battery receptacle, as shown in Figure 6-2. Battery plug Battery receptacle Figure 6-2 Disconnecting the battery plug and battery receptacle (front view) 5. Grasp the battery handle, and pull the internal battery pack out of the UPS, as shown in Figure 6-3. Internal battery pack Battery handle Pull out Figure 6-3 Pull out the battery pack 6. Unpack the new internal battery pack. Take care not to destroy the packing. Compare the new and old internal battery pack to make sure that they are the same type and model. If so, proceed with Step 7; if they are different, stop and contact your local Emerson representative, or Emerson Channel Support. 7. Line up and slide in the new internal battery pack. 8. Reconnect the battery plug and battery receptacle. 9. Push the battery wire and internal battery pack back into the UPS. 10. Reattach the front battery door with the four screws. 11. Reattach the front plastic bezel cover to the UPS.

32 Chapter 6 Maintenance Note The internal battery pack is hot-swappable. However, caution should be exercised because during this procedure the load is unprotected from disturbances and power outages. Do not replace the battery while the UPS is operating in Battery Mode. This will result in a loss of output power and will drop the connected load. 6.2 Battery Charging The batteries are valve-regulated, nonspillable, lead acid and should be kept charged to attain their design life. The Liebert GXT4 charges the batteries continuously when it is connected to the utility input power. If the Liebert GXT4 will be stored for a long time, Emerson recommends connecting the UPS to input power for at least 24 hours every four to six months to ensure full recharge of the batteries. 6.3 Precautions Although the Liebert GXT4 has been designed and manufactured to ensure personal safety, improper use can result in electrical shock or fire. To ensure safety, observe the following precautions: 1. Turn Off and unplug the Liebert GXT4 before cleaning it. 2. Clean the UPS with a dry cloth. Do not use liquid or aerosol cleaners. 3. Never block or insert any objects into the ventilation holes or other openings of the Liebert GXT4. 4. Do not place the Liebert GXT4 power cord where it might be damaged. 6.4 Checking UPS Status Emerson recommends checking the UPS operation status every six months. Check if the UPS is faulty: Is the fault indicator on? Is the UPS sounding an alarm? Does the LCD display panel display any warning or fault? Check if the UPS is operating in Bypass mode: Normally, the UPS operates in Normal mode; if it is operating in Bypass mode, stop and contact your local Emerson representative or Emerson Channel Support. Check if the battery is discharging: When the utility input is normal, the battery should not discharge. If the UPS is operating in Battery mode, stop and contact your local Emerson representative or Emerson Channel Support. 6.5 Checking UPS Functions Note UPS function check procedures may interrupt power supply to the connected load. Emerson recommends checking the UPS functions once every six months. Back up the load data before conducting the UPS functions check. Procedures are as follows: 1. Select Main Menu -> 3 CONTROL -> 1 TURN ON & OFF to enter the TURN ON & OFF screen, and select TURN UPS BYPASS to transfer the UPS to bypass. Check whether the LCD display panel displays the warning normally. 2. Select Main Menu -> 2 CONFIGURATION -> 4 OUTLET1/5 OUTLET2-> 1 OUTLET CONTROL to enter the OUTLET CONTROL screen (see Figure 3-13), select TURN ON or TURN OFF and press the ENTER button to control the programmable receptacle 1/2. Check whether the LCD display panel displays the outlet status normally. 3. Select Main Menu -> 2 CONFIGURATION -> 3 OPERATION MODE to enter the OPERATION MODE screen (see Figure 3-11), and select GREEN MODE ON or GREEN MODE AUTO to control the UPS operation mode. Check whether the LCD display panel displays the mode normally. 4. Select Main Menu -> 3 CONTROL -> 3 BATT TEST to enter the BATT TEST screen, and select 1 START to start manual battery test. Check whether the UPS can operate normally in Battery mode. If not, stop and contact your local Emerson representative or Emerson Channel Support.

Chapter 7 Troubleshooting 33 Chapter 7 Troubleshooting This section indicates various UPS symptoms a user may encounter and troubleshooting steps in the event the UPS develops a problem. Use the following information to determine whether external factors caused the problem and how to remedy the situation. 7.1 UPS Symptoms The following symptoms indicate the Liebert GXT4 has malfunctions. 1. The fault indicator will be illuminated, and the LCD display panel will display the fault. 2. An alarm buzzer will sound, indicating that the UPS requires attention. 7.1.1 Indicator And LCD Display Panel In addition to the fault indicator being illuminated, the LCD display panel will display the fault. The displayed fault on the LCD display panel is described in Table 7-1. Table 7-1 Description of the displayed fault Displayed fault Cause Corrective Steps UPS self test failed The battery is bad or weak Call customer service UPS shutdown command received The UPS shuts down through communication Call customer service UPS overload The UPS is overloaded Reduce the load and call customer service Inverter Out of Order The inverter is faulty Call customer service Battery Weak/Bad The battery is bad or weak Replace the battery Output Short-circuit The output connection is short-circuited Shut down the equipment and call customer service DC Bus Over-voltage The DC bus is faulty Call customer service UPS Over-temperature Over-temperature occurs to the UPS and the UPS will transfer to Bypass mode Reduce the load and call customer service Charger Out of Order The charger is faulty Call customer service Fan Out of Order At least one fan is faulty Call customer service DC Bus Discharge Fail DCDC failure occurs Call customer service Note If the UPS encounters a fault, and you do not perform any operation on it within two minutes, the LCD backlight will flash (on 1s and off 1s) to remind you of the fault. You can press any button to exit the flash mode. If you still do not perform corresponding operation on the UPS, the LCD backlight will flash again until you handle the UPS fault. 7.1.2 Audible Alarm An audible alarm will be used in conjunction with the visual indicator to indicate to the user a change in UPS operating status. The audible alarm will enunciate as given in Table 7-2. Table 7-2 Audible alarm description No. Condition Alarm 1 Battery discharge Half-second beep every 10 seconds 2 Low battery Two half-second beeps every 5 seconds 3 UPS fault, load on bypass 1-second beep every 4 seconds 4 UPS fault, no power to load Continuous 5 Overload Half-second beep every half second 6 Battery Replacement 2-second beep every 2 minutes 7 Battery loss Continuous 8 Wiring problem (including line-to-neutral reversal or a loss of proper grounding for UPS) Continuous

34 Chapter 7 Troubleshooting No. Condition Alarm 9 Bypass reminder 1-second beep every 1 minutes 7.2 Troubleshooting If any technical problems should occur, check the following before contacting Emerson technical support: 1. Is the utility voltage present at the UPS input? 2. Have the circuit breakers tripped? 3. Has the UPS startup procedure been followed correctly? When contacting Emerson technical support, have the following information to hand: Device model number Serial number (from the nameplate) Exact description of the problem (what loads are being operated, does the problem occur regularly or sporadically, etc.)

Chapter 8 Battery Cabinet 35 Chapter 8 Battery Cabinet Optional battery cabinets are available for the Liebert GXT4. The battery connectors and input breaker are on the battery cabinet s rear panel, as shown in Figure 8-1. For battery cabinet specifications, refer to Table 9-3. The Liebert GXT4 may be equipped with a maximum of six extension battery packs. For battery run time, refer to Table 9-4. Input breaker Warning Battery ports Figure 8-1 Battery cabinet Do not contact the battery ports and ground without wearing protective gloves and clothing and taking other precautions against electrical shock. The battery loop and AC input are not insulated, which may cause a dangerous voltage between the battery ports and ground. Note External Battery Connectors are wired in parallel. Either connector can be connected to the UPS or to another battery cabinet.