Emerson NX manual

AC P ow er For Business-Criti cal C on tinuity™ Li eb er t ® NX ™ Operati on and Maint enanc e Manual – 225-600kV A, Three-Phas e , Single-Module & Multi-Module[...]

C ONT ACTING E MERSON N ETWORK P OWER FOR S UPPORT To contact Emerson Network Power Liebert Services for information or repair service in the United States, call 800-543- 2378. Liebert Services offers a complete range of star-up services, repair services, preventive maintenance plans and service contracts. For repair or mainten ance service ou tsid[...]

i T ABLE OF CONTENTS I MPORT ANT S AFETY I NSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 SA VE THE SE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.0 I NTRODUCTI ON . . . . . . . . . . . . . . . . . . . . . . . . . . [...]

ii 2.6 Automatic Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 2.6.1 Overloads (Withou t Transfer) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 2.6.2 Automatic Transfers to Bypass (Ove rload Condition) . . . . . . [...]

iii FIGURES Figure 1 Typical single module UPS system on e-line diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Figure 2 Main component locations-225 to 300kVA Lie bert NX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Figure 3 Main components, 400-600kVA Liebert NX . . . . . . . . . . . . [...]

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Important Safety Instructions 1L i e b e r t ® NX ™ I MPORT ANT S AFETY I NSTRUCTIONS SA VE THESE INSTRUCTIONS This manual co ntains important ins tructions that shoul d be followed during installation of your Liebert NX UPS. Read this manual thoroughly, payin g special attention to the sections that ap ply to your installa tion, before workin g[...]

Important Safety Instructions Liebert ® NX ™ 2 Battery Cabinet Precautions The following warning appl ies to all battery ca binets supplied with UPS systems. Addit ional warnings and cautions applicab le to battery cabinets may be found in Important Safety Instructions on page 1 and 4.4 - Battery Maintenance . NOTICE This unit complies with the [...]

Introd uction 3L i e b e r t ® NX ™ 1.0 I NTRODUCTION 1.1 General Description The Liebert NX UPS provides continuous, high-quali ty AC power to your bu siness-critical equipment, such as telecommunications and data processing equipment. The Liebert NX UPS supplies power that is free of the disturbances an d variations in voltage and freq uency c[...]

Introd uction Liebert ® NX ™ 4 1.2 Modes of Operation 1.2.1 Normal Mode Operating in normal mode, the Liebert NX’s rectif ier derives power from a utility AC source and supplies regulated DC po wer to the inverter, which regenerates precise AC power to supply the connected equipment. The rectifie r also uses the utility source power to charge [...]

Introd uction 5L i e b e r t ® NX ™ 1.3 Options A number of options are availa ble from Emerson ® for your UPS system. Some options are not available for all ra tings. Described below are the mo st frequently provided options. Other optio ns are available. Contact your Emerson sales representativ e for more information. • Battery and Racks ?[...]

Operation Liebert ® NX ™ 6 2.0 O PERATION The Liebert NX UPS is equipped with a microprocessor-b ased display touchscreen designed for convenient and reliable operat ion. The disp lay is driven by menu-prompted software. 2.1 Features The Liebert NX interface display enables the operato r to perform such tasks as: • Quickly check operat ional s[...]

Operation 7L i e b e r t ® NX ™ Figure 3 Main component s, 400-600kV A Liebert NX FRONT DOORS REMOVED DOORS AND INNER SKINS REMOVED HMI Screen Main Input Circuit Breaker (CB1) Optional Backfeed Circuit Breaker (BFB) External Communication Panel Input Ground Busbar Battery Busbars (+ / -) Bypass Busbars Ø A,B,C Output Busbars Ø A,B,C Rectifier [...]

Operation Liebert ® NX ™ 8 Figure 4 M ain display screen, typ ical Figure 5 Normal Mode Figure 6 Utility fail 9 1 5 3 2 8 4 7 6 1. Byp ass Input: voltage and frequency readings 2. Line power Input: voltage, current and fre- quency read ings 3. Output: voltage, current and frequency read- ings 4. Battery: voltage and current readings 5. System St[...]

Operation 9L i e b e r t ® NX ™ Figure 7 Load on byp ass 2.2 T ouchscreen Navigation Several menu items can be accessed fr om the main display screen (see Figure 9 ). These menu items are detailed in subsequent sections. 2.2.1 Main Display Screen This is the default screen. It disp lays the follow ing information : • Bypass Input Voltage • B[...]

Operation Liebert ® NX ™ 10 2.2.2 St atus This menu item displays a li st of current Fault Warnings and Info. Figure 8 St a tus 2.2.3 Event s Log Menu This menu item displays the li st of Events that occurred recently while the U PS was in operatio n. 2.2.4 Measures Menu This menu item displays the ful l set of measuremen ts for each functional [...]

Operation 11 Liebert ® NX ™ Figure 9 Measures menus 2.2.5 Battery Menu This menu item displays the battery status/parameter s such as temperature, cell voltage, capacity and run time, as well as commands that enable th e user to the user to configure and execute the battery test. Battery St atus • Battery Status— Spe cify whether battery is [...]

Operation Liebert ® NX ™ 12 Battery Measures This section monitors variabl es applicable to the battery. Figure 10 Battery parameters[...]

Operation 13 Liebert ® NX ™ 2.2.6 Life Menu This menu displays the information about the status of Liebert LIFE.net connections, status of calls and types of calls and allows certa in specific command s to be executed. This button is not active if the LIFE.net option is not available on UPS. Figure 1 1 Life menu[...]

Operation Liebert ® NX ™ 14 2.2.7 Settings Menu This menu item displays the LCD settings and sel ected language. Figure 12 Settings Menu 2.3 Animated One Line Mimic This displays a ll the functional b locks in the UPS. Touch any icon to obtain detailed information about the corresponding fu nctional block. The color of the bloc k identifies its [...]

Operation 15 Liebert ® NX ™ 2.4.1 Load on Byp ass In this operating mode, the connected loads are supplied from line power via the Static By pass Switch. The Stat ic Bypass Switch is u sed to provide power to the loads. If an overload or short-circuit on UPS output occurs, the Static Bypass Switch is automatically activated to provide uninterrup[...]

Operation Liebert ® NX ™ 16 2.4.2 Input Power Failure—Load on DC Source If the utility AC p ower source fails or is outsid e the acceptable range, th e DC source becomes the power source for the UPS module inverters. The UP S continues to supply po wer to the critical load and also to the UPS controls. Use the Battery Time screen at th e UPS m[...]

Operation 17 Liebert ® NX ™ 2.4.4 Remote Emergency Power Off The Remote Emergency Power Off control is a us er -provided switch located remotely from the UPS system. It usuall y is installed in the same room as the critical lo ad equipment. This mode can also be initiated by an automatic contact closure in the same external circuit as the manual[...]

Operation Liebert ® NX ™ 18 2.5.1 St artup—Single Module System This section lists typical step-by- step instructions. If the installation includ es a Maintenance Bypass, power may alread y be suppli ed to the critical load equipment through the Maintenance Bypass. If there is no power to the critical load, apply po wer through the UPS bypass [...]

Operation 19 Liebert ® NX ™ g. Close all DC breakers. NOTICE Risk of improper operation. Can cause equipment damage. Do not close the battery breaker un til the DC bus is above 540VDC. h. Press the “Start Inverter” button on touchscre en. Press “Confirm” on the popup window and the load wil l be energize d from the UPS inverter. NOTICE R[...]

Operation Liebert ® NX ™ 20 2.5.3 Load T ransfer and Retransfer-Single Module System Changing the load from the UPS system to the UP S bypass is called a transfer. Chang ing the load from UPS bypass to the UPS system is called a retransfer. Note that the UPS system control logic can initiate automatic load transfer s and retransfers. Refer to 2.[...]

Operation 21 Liebert ® NX ™ 2.5.5 Maintenance Byp ass Load T ransfers-Single Mo dule System: If Load is on Maintenance Byp ass 1. Verify that the module’s rectifier is On and in bypass mode. See 2.5.1 - Startup—Single Module System for the startup sequence. 2. Close the Bypass Input Brea ke r (BIB) or ve rify that it is clos ed. This breaker[...]

Operation Liebert ® NX ™ 22 2.5.7 1+N System: T ransfer load from Byp ass to UPS 1. Verify that the module’s rectifier is On and in bypass mode. See 2.5.1 - Startup—Single Module System for the startup sequence. 2. For every module in the sy stem, close the B ypass Input Breaker (BIB) or verify that it is closed. This breaker is external to [...]

Operation 23 Liebert ® NX ™ 3. If using a key interlock system, a. The “OK to transfer” lamp on the key-release unit will light. b. De press the key-releas e unit push bu tton. c. Turn the key and remove it from the key-release unit. d. Insert the key into the lo ck for the Maintenance Byp ass Breaker (MBB) . e. Retract the bolt. 4. Close th[...]

Operation Liebert ® NX ™ 24 2.6 Automatic Operations The Liebert NX UPS system is designed to functi on while unattended by an operator. The system control logic monitors the performance of the UPS, the availabili ty of power s ources and the current required by the critical load. The system control logic: • Determines what overload conditions[...]

Operation 25 Liebert ® NX ™ 2.6.2 Automatic T ransfers to Byp ass (Overload Condition) The UPS system wi ll initiate an au tomatic load transfer to the bypass line if an overload conditi on exceeds the current-versus-ti me curve of overload capacity or if specified UPS system faults occur. The Overload Transfer and Outpu t Undervoltage alar m me[...]

Operation Liebert ® NX ™ 26 2.6.4 Automatic Retransfers to UPS The following critical bus conditio ns must be present to ini tiate an automatic retra nsfer of the critical load from the bypass source to the UPS inverter: 1. Critical load was initially transfer red to the bypass source due to a sy stem overload only. A manual retransfer from bypa[...]

Options 27 Liebert ® NX ™ 3.0 O PTIONS 3.1 Remote Alarm Unit A remote alarm pa nel is availabl e for displaying important indiv idual UPS messages. The leng th of the connection cable must not exceed 1000f t. 3.2 MopUPS Shut down an d Monitoring Sof tware The MopUPS Professional software package provid es safe system shutdown and power managemen[...]

Options Liebert ® NX ™ 28 3.3 Manage UPS Adapter ManageUPS NET Adapter III of fers an open approac h to network power manage ment by delive ring a complete set of manageabi lity options includ ing: WEB, Telne and Out-Of- Band accessibility, in addition to the full-featu red, embedded SNMP ag ent. Event messages are also av ailable as e-mail and [...]

Options 29 Liebert ® NX ™ 3.4.1 A vailable Selectable In put Cont act s •O n G e n • Fast Power Of f • MBB Aux Contacts • Start battery test (see Note 4 below) • Fault acknowled ge • Bypass and Inverter both Off • Stop battery test (see Note 4 below) Notes 1. Ea ch signal can be inverted 2. Each signal can have a turn-on delay appl[...]

Maintenance Liebert ® NX ™ 30 4.0 M AINTENANCE 4.1 Safety Precautions Observe the safety precautions in Battery Cabinet Precautions on page 2 . Observe all of th e warnings belo w before performing any maintenance on the UPS and associated equipment. Also observe the manufa cturer’s safety pre cautions pert aining to the DC source, along with [...]

Maintenance 31 Liebert ® NX ™ 4.2 Liebert Services Startup, UPS maintenance, DC so urce maintenance and training pr ograms are available for the Liebert NX UPS through your Emerson ® sales representative. 4.2.1 Professional S t artup UPS Startup —Emerson ® customer en gineers perform a thoro ugh non-powered inspec tion of the units and will [...]

Maintenance Liebert ® NX ™ 32 4.3 Routine Maintenance You should become thoroughly familiar with the equipment, but at no time should you go beyo nd the specific procedures in this manual wh ile performing mainten ance or correcting a malfunction. If you have any doubt as to what must be done, call Liebert Services at 1-800-LIEBERT for further i[...]

Maintenance 33 Liebert ® NX ™ 4.3.3 Limited Life Component s The Liebert NX UPS has a design life well in exce ss of 10 years. Well-maintained units can continue to provide economic benefits for 20 years or more. Long-life components are used in the UPS w herever practical and cost- effective. However, due to the currently availabl e component m[...]

Maintenance Liebert ® NX ™ 34 4.4.1 Battery Safety Precautions Servicing of batteries should be performed or supe rvised by personnel know ledgeable of batte ries and the required precautions. Keep unauthorized person nel away from batteries. When replacing batteries, use the sa me number and type of batteries. Regular maintenance of the battery[...]

Maintenance 35 Liebert ® NX ™ NOTICE Risk of improper cleaning. Can cause equipment damage. Batteries should be clea ned with a dry cloth or a cloth lightly moistene d with water. Do not use cleaners on the batteries. So lvents can make the battery cases brittle. Because individu al battery characteri stics are not identical and may ch ange over[...]

Maintenance Liebert ® NX ™ 36 Battery Cell Terminals : Check for discolo ration, corrosion and connectio n integrity. Clean and tighten if necessary. NOTE that when instal ling a new ba ttery, the initial torqu e value is 5 lb.- in. more than the retorque value. Table 7 shows batter y retorque values. If the system uses a different mo del batter[...]

Maintenance 37 Liebert ® NX ™ 4.5 Detecting T rouble It is important that the operator check the inst rument readings if abnormal equipment performance is suspected. Any metered valu e that differs ap preciably from no rmal could mean an impending malfunction an d should be in vestigated. 4.5.1 Items to check include: • If the UPS has not oper[...]

Specifications Liebert ® NX ™ 38 5.0 S PECIFICATIONS 5.1 DC Sources 5.1.1 Battery Operation The separate battery manufacturer ’s manual, availabl e on the manufacturer’s Web site, provides the necessary informati on for the insta llation, operatio n and maintenance of the battery. Use the battery manual in conjunction with this manual. The f[...]

Specifications 39 Liebert ® NX ™ T able 8 Electrical specificat ions Input Parameters Input Voltage to Rectifier, VAC, 3-phase, 3-wire 480V Input Voltage to Bypass, VAC, 3-phase, 3-wire 480V Input Voltage Range, VAC +10% to -30% Input Frequency, Hz 60 Permissible Input Frequency Range, Hz 55-65 Rectifier Power Walk-In, sec 1-90 (s electab le) in[...]

Specifications Liebert ® NX ™ 40[...]

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Ensuring The Hi gh Av ailabi lit y Of Mission-Critic al Data And Ap plic ations. Emerson Net work P ower , a business of Emer son (NYSE:EMR), is the global leader in enabling Business-Critic al Continuity ™ from grid to chip f or telecommunication networks, data centers, health care and industrial facilities. Emerson Network Po wer provides inno [...]