Related Manuals for Emerson Liebert NX 480V
Summary of Contents for Emerson Liebert NX 480V
- Page 1 Liebert NX ™ User Manual–40-120kVA, 480V, 60Hz AC Power For Business-Critical Continuity™...
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Page 3: Table Of Contents
MPORTANT AFETY NSTRUCTIONS ............3 LOSSARY OF YMBOLS . - Page 4 Non-Standard Batteries ............24 BCB Shunt Trip .
- Page 5 8.10 Current Date and Time ............65 8.11 UPS Status Messages.
- Page 6 Figure 30 Outline drawing, Liebert NX480V, 80-120kVA Type E1 parallel cabinet....45 Figure 31 Main component location drawing Liebert NX 480V, Type E parallel cabinet ....46 Figure 32 Main component location drawing Liebert NX 480V, Type E1 parallel cabinet .
- Page 7 Figure 41 Mimic display indicators location........... 58 Figure 42 Location of control buttons .
- Page 8 Table 29 Lead/Lag ratings ..............90 Table 30 Cable size tightening torque at Liebert NX 40kVA UPS terminals.
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Page 9: Save These Instructions
MPORTANT AFETY NSTRUCTIONS SAVE THESE INSTRUCTIONS This manual contains important instructions that should be followed during installation of your ™ Liebert NX UPS and ancillary equipment. Read this manual thoroughly, paying special attention to the sections that apply to your installation, before working with the UPS. -
Page 10: Battery Cabinet Precautions
WARNING Under typical operation and with all UPS doors closed, only normal safety precautions are necessary. The area around the UPS system should be kept free of puddles of water, excess moisture and debris. Special safety precautions are required for procedures involving handling, installation and maintenance of the UPS system and the batteries. -
Page 11: Glossary Of Symbols
LOSSARY OF YMBOLS 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 PbH2SO4 Recycle DC voltage Equipment grounding conductor Bonded to ground AC voltage... -
Page 12: Installation
NSTALLATION Liebert’s NX Uninterruptible Power Supply system provides continuous, high-quality AC power to your business-critical equipment, such as telecommunications and data processing equipment. The Liebert NX UPS supplies power that is free of the disturbances and variations in voltage and fre- quency common to utility power, which is subject to brownouts, blackouts, surges and sags. -
Page 13: Internal Inspections
Internal Inspections 1. Remove any packaging material, then visually examine the UPS and battery equipment for transit damage, both internally and externally. Report any such damage to the shipper and to Liebert immediately. 2. Check the nameplate inside the cabinet door to verify that the model number and rating correspond to the ones specified. -
Page 14: Special Considerations For Parallel Systems
Battery Location Batteries must be installed in Liebert NX 480V battery cabinets or battery room. Temperature is a major factor in determining battery life and capacity. Battery manufacturers recommend an operat- ing temperature of 77°F (25°C). Ambient temperatures higher than this reduce battery life; tempera- tures lower than this reduce battery capacity. -
Page 15: Clearances
1.6.1 Clearances There are no ventilation grilles on the sides or rear of the UPS. The unit may be placed with the rear against a wall and optional cabinets on either side. To enable routine tightening of power terminations within the UPS, make sure there is sufficient clearance in front of the Liebert NX to permit free passage of personnel with the door fully opened. -
Page 16: Figure 1 Cabinet Arrangement-Liebert Nx Units And Battery Cabinets
Installation Figure 1 Cabinet arrangement—Liebert NX units and battery cabinets Liebert Liebert Battery Battery Cabinet Cabinet Front of Units Front of Units Liebert Liebert Battery Battery Battery Battery Battery Battery Cabinet Cabinet Cabinet Cabinet Cabinet Cabinet Front of Units Front of Units Liebert Liebert Liebert... -
Page 17: Figure 2 Cabinet Arrangement-Liebert Nx Units, Battery Cabinets And Liebert Fpc
Figure 2 Cabinet arrangement—Liebert NX units, battery cabinets and Liebert FPC Liebert Liebert Foundation Power Center Front of Units Battery Battery Battery Cabinet Cabinet Cabinet Front of Units Liebert Multi-Module Liebert Foundation Parallel Power Cabinet Center Battery Battery Cabinet Cabinet Liebert Liebert Liebert... -
Page 18: Electrical Connections
LECTRICAL ONNECTIONS The UPS requires both power and control cabling once it has been mechanically installed. All control cables must run separate from power cables in metal conduits or metal ducts that are electrically bonded to the metalwork of the cabinets to which they are connected. WARNING Before connecting input power to the Liebert NX, ensure that you are aware of the location and operation of the overcurrent protection devices that connect the UPS input/bypass supply... -
Page 19: Ups Input Configuration
2.1.2 UPS Input Configuration Figure 3 illustrates the Liebert NX in a split bypass (dual-input) configuration. In this configuration the Static Bypass and the Maintenance Bypass lines are supplied from a separate feed from the Main input. Both sources must be protected externally with properly sized protective devices. By default, the unit ships with internal links installed between the bypass input and main input (Single Input configuration). -
Page 20: Cable Connections
2.1.4 Cable Connections The rectifier input, bypass and output are easily accessible from the front of the unit for installation. All require lug type terminations. They are connected to busbars on the front side of the Liebert NX and below the circuit breaker, as shown in Figure 4. These busbars are accessible when the front side panel is removed. -
Page 21: Safety Ground
UPS Rectifier and Bypass Input Supply • Protection from excessive overcurrents and short circuits in power supply input External overcurrent protection for the AC output circuit is to be provided. See 5.4 - UPS Elec- trical Characteristics and Table 9 for overload capacity. -
Page 22: Cabling Procedure
2.1.7 Cabling Procedure CAUTION The operations described in this section must be performed by authorized electricians or qualified technical personnel. If you have any difficulties, contact your local Liebert representative or Liebert Global Services. NOTE Hydraulic pressure pliers, combinative tools and piston ring pliers should be used to connect AC wiring. -
Page 23: Frequency Converter Mode
Frequency Converter Mode If a frequency converter configuration is used, connect the AC input supply cables to the rectifier input busbars (A-B-C terminals). Torque to 88 lb-in (10N-m) for M8 bolts. Ensure correct phase rota- tion. There will not be any AC bypass supply cables to the bypass input (A-B-C terminals) and tighten the connections. -
Page 24: Dry Contacts
Figure 6 Auxiliary terminal block detail (Monitoring Board) J13 J21 J25 BFP INV ACF Dry Contacts The UPS provides input dry contacts and output dry contacts. NOTE When operating the Liebert NX with dry contacts, ESD measures must be taken or the contacts may be damaged. -
Page 25: Input Dry Contacts
2.3.1 Input Dry Contacts There are several input dry contacts at the X3 slot. Figure 7 Input dry contacts +12V Table 1 Input dry contacts at X3 Position Name Description J4.1 Battery Room Alarm (N.C.) J4.2 Battery Ground Fault Detection (N.C.) J4.3 Generator Join Detection (N.O.) J4.4... -
Page 26: Bcb Control Interface
2.3.3 BCB Control Interface J10 is the BCB box interface. Table 3 BCB control interface Position Name Description J10.1 BCB Driver Signal J10.2 BCB Contact State J10.3 Power Ground BCB On-Line - Input - This pin will become active when J10.4 BCB interface is connected. -
Page 27: Output Dry Contacts
2.3.4 Output Dry Contacts There are three output dry contact relays at the X1 slot (see Figure 9 and Table 4). Figure 9 Output dry contacts and EPO wiring for firmware before M170 NOTE: The black square on each slot Table 4 Output dry contact relays Position... -
Page 28: Epo Input-Optional
The Emergency Stop action within the UPS shuts down the rectifier, inverter and static bypass. It does not internally disconnect the input power supply. To disconnect ALL power to the UPS, open the upstream feeder breaker(s) when the remote EPO is activated. -
Page 29: Battery Installation
ATTERY NSTALLATION Introduction If using multiple sets of batteries connected in parallel to provide the required battery backup run times, fit each set with an isolating device to permit working on one of the battery sets while leaving the others in service and providing backup protection. When replacing batteries, replace with the same manufacturer and type, or equivalent. -
Page 30: External Battery Cabinet Installation
External Battery Cabinet Installation 3.3.1 Battery Cabinets Figure 11 Battery cabinet Top Cable Entry Optional Alber Data Collector Module Optional Alber Controller Module Battery Trays The same model battery cabinet may be installed in parallel in multiple cabinet strings for additional capacity. -
Page 31: Connecting The Batteries
3.3.2 Connecting the Batteries If the Liebert NX battery cabinets are installed on a raised floor, the battery power cables and circuit breaker control cables may be routed to the UPS cabinet via the floor of the cabinet (bottom entry). If the Liebert NX battery cabinets are installed adjacent to one another on a solid floor, these cables may be passed between the cabinets through lifting slots in the lower sides of the cabinets. -
Page 32: Connecting The Battery Cabinet To The Ups
Figure 13 Battery tray and supports Slot in support secured by screw-in connector at corner of battery tray ... 3.3.4 Connecting the Battery Cabinet to the UPS After the battery cabinet equipment has been positioned and secured for operation and the batteries have been connected, connect the power cables as described below. -
Page 33: Alber Monitoring System-Optional
Alber Monitoring System—Optional The Liebert matching battery cabinet allows installing an optional Alber Battery monitoring system in the cabinet. The Alber Battery Monitoring by Liebert continuously checks all critical battery parameters, such as cell voltage, overall string voltage, current and temperature. Automatic periodic tests of internal resistance of each battery will verify the battery’s operating integrity. -
Page 34: Options
PTIONS Load Bus Synchronization The Load Bus Synchronizer (LBS) keeps the output of two independent UPS systems or parallel UPS systems in synchronization even when the systems are operating in different modes and even when either or both systems are operating on batteries. When the LBS is used, one UPS system is desig- nated as master, the other as slave. -
Page 35: Configuring Parallel System Operation
The parallel system is used to: • Increase the reliability of the system to ensure adequate power supply to the critical load con- nected. • Increase serviceability and allow the execution of maintenance operations and repairs without affecting the ordinary operating conditions of the system (depending on the redundancy level). -
Page 36: Operating Principles
The sequence to transfer to maintenance bypass mode is the same as for transferring a single- module system. The maintenance bypass switches should be switched on as synchronously as pos- sible. Thus the system can be repaired without interrupting the power supply to critical load. Installing Parallel System The basic installation procedure of parallel system is the same as that of single module system. -
Page 37: Conditions For Parallel System
4.3.1 Conditions for Parallel System • Each UPS module must have the same bypass source. • The outputs of all UPS modules are connected altogether. • The main inputs can be from different sources, but the phase rotation sequence of main inputs, bypass inputs and outputs must be correct and the same. -
Page 38: Figure 17 Connecting System Parallel Control Cables
Figure 17 Connecting system parallel control cables Parallel Board X2-2 X2-1 X1-1 X1-2 Auxiliary Dry Contact Cables The external output breaker of each UPS must have Normally Open auxiliary contacts. These con- tacts must be wired to connector X3 on the Parallel Logic Board (M3). See Figures 18 and 19. Figure 18 Auxiliary dry contact cables for output breaker in multi-module system CAUTION The auxiliary control wire must be installed to ensure proper operation of the system. -
Page 39: Figure 19 Dry Contacts, Multiple Ups Modules With Distribution Panel
Options Figure 19 Dry contacts, multiple UPS modules with distribution panel Input Distribution UPS 1 UPS 2 UPS N M 3 Board M3 Board M 3 Board Ext. Maint. Ext. Out Ext. Maint. Ext. Out Ext. Maint. Ext. Out Q1Ext Q2Ext QnExt QByp... -
Page 40: Emergency Power Off (Epo)
4.3.6 Emergency Power Off (EPO) The external emergency stop facility is identical to that described for the single unit installation— that an individual emergency stop button is provided for each unit. Figure 20 Connecting EPO push button Normally Open EPO Normally Closed EPO UPS2... -
Page 41: Ups Specifications
UPS S PECIFICATIONS These specifications describe requirements for the Liebert NX UPS. Conformity and Standards The UPS has been designed to conform to the following standards: • IEEC 61000-4-5 • ASME • CSA 22.2, No. 107.1 • FCC Part 15, Class A •... -
Page 42: Ups Electrical Characteristics
UPS Electrical Characteristics Table 8 UPS terminal Input (For Single-Input Unit) Nominal Maximum Unit Input Input Rating Current Current 66.8 100.2 133.6 167.1 200.5 Rectifier input (for dual input unit only) Nominal Maximum Unit Input Input Rating Current Current 67.5 101.3 168.8 202.5... -
Page 43: Table 11 Liebert Approved Replacement Batteries
Table 8 UPS terminal (continued) Battery Nominal Maximum Unit Input Input Rating Current Current 82 at 480VDC 98 at 400VDC 122 at 480VDC 146 at 400VDC 163 at 480VDC 195 at 400VDC 204 at 480VDC 244 at 400VDC 244 at 480VDC 293 at 400VDC 1. -
Page 44: Table 12 Dc Intermediate Circuit
5.4.2 DC Intermediate Circuit Table 12 DC intermediate circuit Rated Power kVA Recommended number of lead-acid batteries Recommended float charge voltage Recommended boost charge voltage Recommended end of discharge voltage Maximum recharge battery current, A * Maximum boost charge duration, min. * Boost-float threshold current, A * Temperature voltage compensation, mV/°C * Ripple voltage superimposed %... -
Page 45: Installation Drawings
NSTALLATION RAWINGS The diagrams in this section illustrate the key mechanical and electrical characteristics of the Liebert NX UPS System cabinets. Figure 21 Dimensional view- front and left side views 997mm (39.3") 39.6mm 360mm (1.6") (14.2") 1. All dimensions are in millimeters (in.). 2. -
Page 46: Figure 22 Dimensions Continued-Top And Bottom Views
Figure 22 Dimensions continued—top and bottom views 152 (6") 671.6 (26.4") 367.7 (14.5") 120.7 (4.8") 113.5 (4.5") (5.9") (23.6") (5.9") Figure 23 Main components—typical unit Monitor Board Intellislot Communication Ports Replaceable Air Filters (3") 120.7 (4.8") (33.1") (4.7") 514.5 (20.3") 987.1 (38.9") Parallel Board... -
Page 47: Figure 24 Cable Connections
Figure 24 Cable connections (38") LEFT SIDE VIEW (with side panel removed) 20 (.79") 25.4 (1") (.24") (1.38") 36 (1.42") (23.6") 2000 (78.7") FRONT VIEW (with door removed) (1.38") 158.1 (6.22") Output Main Bypass Installation Drawings NOTES 1. All dimensions are millimeters (in.). 2. -
Page 48: Figure 25 Outline Drawing, 33" Battery Power Pack System, Single Cabinet
Figure 25 Outline drawing, 33" battery power pack system, single cabinet Max. Door Swing: 120° (Viewed From Above) (33.2) Center of Gravity Front (Without Door) 1. All dimensions are in millimeters (inches) 2. Minimum clearance 36" front and 8" top required for air exhaust. 3. -
Page 49: Figure 26 Terminal Details, 33" Battery Power Pack System, Single Cabinet Liebert Nx
Figure 26 Terminal details, 33" battery power pack system, single cabinet Liebert NX (2.32) (0.30) 76.2 Front (Without Doors and Protective Plates) (-) Negative DETAIL B (+) Positive (Without Protective Plates) NOTES: 1. All dimensions are in millimeters (inches). 2. All cables should be routed before bolting cabinets together. 3. -
Page 50: Figure 27 Battery Connections
Figure 27 Battery connections Bay #1 Bay #2 32 Pcs 80 Pcs 3 6 Pcs NOTE: 1. All service and initial connection of batteries must be performed by qualified service personnel . 2.Typically used for: C&D Battery Enersys P OS ITIV E NE GA TIV E GROUND B LA CK... -
Page 51: Figure 28 Battery Cabinet Interconnection
Figure 28 Battery cabinet interconnection NOTES: 1. All cables must be repositioned prior to and while setting the cabinets in their installed location. 2. Refer to the individual drawing of each piece of equipment for additional details. From UPS Battery Terminal Block External Battery Cabinet Battery Cabinet(s) Breaker Control Terminal Block... -
Page 52: Figure 29 Outline Drawing, Liebert Nx480V, 80-120Kva Type E And E2 Parallel Cabinet
Figure 29 Outline drawing, Liebert NX480V, 80-120kVA Type E and E2 parallel cabinet (31.5) 2000 (78.7) Front (38) Right Side NOTE: 1. All dimensions are in millimeters (in). 2. Eight-inch minimum clearance above unit required for air exhaust. 3. Keep cabinet within 15 deg. of vertical while handling. 4. -
Page 53: Figure 30 Outline Drawing, Liebert Nx480V, 80-120Kva Type E1 Parallel Cabinet
Figure 30 Outline drawing, Liebert NX480V, 80-120kVA Type E1 parallel cabinet 1240 (48.8) Front (38) Right Side 2000 (78.7) NOTE: 1. All dimensions are in millimeters (in). 2. Eight-inch minimum clearance above unit required for air exhaust. 3. Keep cabinet within 15 deg. of vertical while handling. 4. -
Page 54: Figure 31 Main Component Location Drawing Liebert Nx 480V, Type E Parallel Cabinet
Figure 31 Main component location drawing Liebert NX 480V, Type E parallel cabinet System Input Input Breakers System Bypass Tie Breaker Front UPS Output Breaker Ground Busbar Rear Installation Drawings System O/P Tie Breaker Kirk - Key Fuse Disconnect System... -
Page 55: Figure 32 Main Component Location Drawing Liebert Nx 480V, Type E1 Parallel Cabinet
Figure 32 Main component location drawing Liebert NX 480V, Type E1 parallel cabinet 1240 (48.8) Front (With Covers ) Rear With Covers System Input UPS Input Bypass 2000 (78.7) Breaker Without Covers Bypass Breaker Installation Drawings Ground Front Output Distribution... -
Page 56: Figure 33 Main Component Location Drawing Liebert Nx 480V, Type E2 Parallel Cabinet
Figure 33 Main component location drawing Liebert NX 480V, Type E2 parallel cabinet Output Breakers Bround Busbar System O/P Tie Breaker Kirk-Key Fuse Disconnect System Output FRONT Busbars Installation Drawings... -
Page 57: Figure 34 Lineup Detail-Parallel Type E Connection To Liebert Nx
Figure 34 Lineup detail—Parallel Type E connection to Liebert NX B1-B4 FRONT (Without Covers) E1-E4 REAR (Without Covers) G1-G4 H1-H4 FRONT (Door Open) C1-C4 From Utility Source B1-B4 Parallel Cabinet UPS #1-UPS #4 C1-C4 Module AC Output Parallel Cabinet E1-E4 Parallel Cabinet Parallel Cabinet G1-G4... -
Page 58: Figure 35 Lineup Detail-Parallel Type E1 Connection To Liebert Nx
Figure 35 Lineup detail—Parallel Type E1 connection to Liebert NX B1-B4 FRONT (Without Covers REAR (Without Covers From Utility Source B1-B4 Parallel Cabinet UPS #1-UPS #4 Module C1-C4 AC Output Parallel Cabinet E1-E4 Parallel Cabinet Parallel Cabinet G1-G4 Parallel Cabinet H1-H4 Parallel Cabinet E1-E4, F... -
Page 59: Figure 36 Lineup Detail-Parallel Type E2 Connection To Liebert Nx
Figure 36 Lineup detail—Parallel Type E2 connection to Liebert NX E1-E4 FRONT (Without Covers) From B1-B4 Utility UPS #1-UPS #4 C1-C4 Module AC Output Parallel Cabinet E1-E4 Parallel Cabinet Parallel Cabinet G1-G4 Parallel Cabinet H1-H4 Parallel Cabinet C1-C4 G1-G4 H1-H4 (Door Open) UPS #1-UPS #4 Module AC Ph A, B, C - UPS Inputs... -
Page 60: Figure 37 Line-Up Detail, Bolt Together Description, 40-120 Kva Liebert Nx
Figure 37 Line-up detail, bolt together description, 40-120 kVA Liebert NX LEFT SIDE (Without Exterior (38 in.) 2000 (78.7 in) RIGHT SIDE (Without Exterior Panels NOTES: 1. All dimensions are in millimeters (inches) 2. All cables should be routed before bolting cabinets together. -
Page 61: Operation
Specifically, the Liebert NX 480V utilizes soft-switching technology to greatly enhance efficiency. As shown in Figure 38, the AC utility source is input at CB1 and the rectifier converts the AC utility into DC power. -
Page 62: Bypass Supplies
7.1.1 Bypass Supplies The Liebert NX contains an electronically controlled switching circuit that enables the critical load to be connected to either the inverter output or to a bypass power source via the static bypass line. Dur- ing normal system operation the load is connected to the inverter and the inverter contactor is closed; but in the event of a UPS overload or an inverter failure, the load is automatically transferred to the static bypass line. -
Page 63: Maintenance Mode
Maintenance Mode For maintenance or repair, the Liebert NX may be operated in maintenance mode. To place the Lie- bert NX in maintenance mode, the load must be transferred to bypass and the inverter must be turned off. When those conditions are met, the CB3 may be turned on and the UPS may be shut down, permitting disconnecting the batteries for maintenance. -
Page 64: O Perator C Ontrol And D Isplay P Anel
PERATOR ONTROL AND Operator Control Panel The control panel and LCD on the front of the Liebert NX let the operator: • turn the UPS On or Off • transfer into the various operating modes • silence alarms • check the status of the UPS and its batteries, including all measured parameters, events and alarms The main areas of the control panel are shown below in Figure 39 and detailed in Figure 40. -
Page 65: Figure 40 Detailed View Of Control Panel
Figure 40 Detailed view of control panel Mimic indicators 1. Rectifier indicator 8. Inverter Off Button 2. Battery indicator 3. Inverter indicator 10. EPO Cover 4. Bypass indicator 5. Load indicator 6. Status indicator 7. Buzzer 15 16 18 19 Control buttons 9. -
Page 66: Table 15 Mimic Display Status Indicators
Mimic Display Indicators The Mimic display on the front panel consists of six indicators arranged in a single-line diagram depicting the various paths of UPS power, as shown in Figure 41. Figure 41 Mimic display indicators location Bypass indicator Inverter indicator Rectifier indicator Battery indicator Buzzer... -
Page 67: Control Buttons
Control Buttons The Control Buttons on the front panel may be used to shut down the UPS completely, turn the inverter On or Off, restart the UPS after a fault and silence the alarm, as shown in Figure 42. The function of each button is described in Table 16. -
Page 68: Audible Buzzer
Audible Buzzer The buzzer produces three types of sounds: • Single beep - when any control button is pressed • Single beep repeating every two seconds - the system has a general alarm • Continuous - the system has a serious fault If the buzzer makes no sound, the system may be operating properly, or an alarm may have been silenced manually. -
Page 69: Navigation Keys
Navigation Keys The navigation keys on the front panel—F1 through F4 and Help—are used to access the LCD to view the current status and other information about the Liebert NX. Navigation key icons on the LCD appear above each key to indicate its operation (see Table 17). The keys are “soft keys”... -
Page 70: Lcd Menus And Data Items
LCD Menus and Data Items The LCD menus provide access to the following categories of information and settings for the UPS. Selecting a menu changes the information displayed in the UPS data items portion of the LCD. The menu choices are listed below and described in detail in Table 19. •... -
Page 71: Table 19 Descriptions Of Ups Menus And Data Window Items
Table 19 Descriptions of UPS menus and data window items Menu Type Item Type L-N current (A) Frequency (Hz) Mains (input) L-L voltage (v Power factor TX Input L-L voltage (V) Frequency (Hz) Bypass L-L voltage (A) L-N current (A) Frequency (Hz) Output L-L voltage (V) -
Page 72: Language Selection
Table 19 Descriptions of UPS menus and data window items (continued) Menu Type Item Type Battery maintenance test Battery capacity test System test Command (start / stop battery & Stop testing system tests) Freshening Charge Stop Freshening Charge Modem Auto-answer enable UPS version Version... -
Page 73: Current Date And Time
8.10 Current Date and Time To change the system date and time: • From the main menu, press the F1 (shift) key to move the cursor to the menu at the top of the screen. • Press F2 and F3 (left and right arrows) as needed to select the Settings menu. •... -
Page 74: Ups Status Messages
8.11 UPS Status Messages The Liebert NX displays status changes as they occur in the current status window of the LCD, then stores that data in the history log, as shown in Figure 48. • Current Status Window: The status messages are displayed chronologically and include the date and time of the events. -
Page 75: Types Of Lcd Screens
8.12 Types of LCD Screens This section provides a quick guide to the main types of LCD screens. 8.12.1 Opening Display As the UPS begins powering up, the opening display appears, as shown in Figure 49. Figure 49 Opening display 8.12.2 Default Screen After the UPS has powered up and completed a self-test, the output screen appears, as shown in Figure 50. -
Page 76: 8.12.3 Ups Help Screen
8.12.3 UPS Help Screen Press the HELP key below the LCD to display the Help window shown in Figure 51. (Press the HELP key again to exit the Help window.) Figure 51 Help screen 8.12.4 Screen Saver Window If there has been no interaction with the Liebert NX’s LCD for 2 minutes, the screen saver window appears. -
Page 77: Pop-Up Windows
8.13 Pop-Up Windows Pop-up prompt windows appear when the user must confirm a choice or perform an operation. This section describes the pop-up windows. 8.13.1 From Bypass to Inverter Mode With Power Interruption If the bypass voltage or frequency exceeds the synchronized range and utility voltage or frequency is normal, the inverter cannot be in syn- chronization with the bypass, and the output can transfer to inverter only after an interruption of about 15ms when the user presses the... -
Page 78: Operating Instructions
PERATING NSTRUCTIONS Liebert NX Operating Modes The Liebert NX can operate in any of four modes, as shown in Table 20. This section provides instructions on switching between modes, resetting the UPS, switching the inverter On and Off and performing other operations. Table 20 UPS operating modes Circuit Breaker... -
Page 79: Circuit Breakers
9.1.1 Circuit Breakers The UPS can be isolated by means of circuit breakers, mounted inside the cabinet and accessible after opening the front door. The location of the UPS power switches is shown in Figure 53. Figure 53 Circuit breakers The UPS unit circuit breakers are CB1, CB2, CB3 and CB5. -
Page 80: Ups Startup
UPS Startup The Liebert NX must be fully installed and commissioned before startup, and external power isolators must be closed. Once those general conditions are met, the UPS may be started. 9.2.1 Startup Procedure To start the UPS from a fully powered-down condition: 1. -
Page 81: Verify Switching Between Operation Modes
6. Press the INVERTER ON control button for 2 seconds. The inverter will start and the inverter indicator will flash green. After the inverter is ready, the UPS will transfer from bypass to inverter, the bypass indicator will turn off and the inverter and load indicators will turn on. -
Page 82: Maintenance Bypass Procedure And Powering Down The Ups
Maintenance Bypass Procedure and Powering Down the UPS Follow the procedure below to transfer the load from the inverter output to the Maintenance Bypass line of the UPS. CAUTION Before performing this operation, read the messages on the LCD to be sure that bypass supply is regular and the inverter is synchronous with it. -
Page 83: Auto Restart
Auto Restart When the main and bypass sources fail, the UPS draws power from the battery system to supply the load until the batteries are depleted. When the UPS reaches its end of discharge (EOD) threshold, it will shut down. The UPS will automatically restart and enable output power: •... -
Page 84: Battery Protection
Battery Protection 9.7.1 Battery Undervoltage Pre-Warning Before the end of discharge, the Liebert NX displays a Low Battery pre-warning. After this pre-warn- ing, the battery has the capacity for 5 minutes discharging with full load (default time). The Liebert NX can be user-configured to display this warning from 3 to 60 minutes before end-of-discharge. 9.7.2 Battery End-of-Discharge (EOD) Protection If the battery voltage is lower than the end-of-discharge voltage, the battery converter will be shut... -
Page 85: Figure 54 Typical Parallel System Block Diagram With Common Input Supply, With Separate Batteries
Figure 54 Typical parallel system block diagram with common input supply, with separate batteries and optional output / bypass distribution panel 480V 3W+G Input Optional additional systems NOTE All equipment servicing procedures must be carried out only by trained personnel. Tie breaker CB 3 CB 3A... -
Page 86: Inserting One Module Into A Multi-Module System
9.8.2 Inserting One Module into a Multi-Module System This procedure outlines how to integrate a UPS module that has been previously isolated from other modules of a group of paralleled UPS modules. It is assumed that the installation is complete, the sys- tem has been commissioned by authorized personnel and the external power isolators are closed. -
Page 87: Shutdown Procedure-Complete Ups And Load Shutdown
9.8.3 Shutdown Procedure—Complete UPS and Load Shutdown This procedure must be followed to completely power down the UPS and the load. All power switches, isolators and circuit breakers will be opened and power will be removed from the load. In multi-module systems, perform each step of the procedure in every UPS module before proceeding to the next step. -
Page 88: Parallel System Start Up
9.10 Parallel System Start Up 1. Start each UPS normally as described in 9.2 - UPS Startup 2. Turn on the inverter of each UPS module one at a time. 3. Apply the load after the last UPS module transfers to inverter. The total load can be determined through the LCD of either UPS. -
Page 89: Options
10.0 O PTIONS Several items of optional equipment are available for connection to the Liebert NX UPS. 10.1 Communication and Other User Terminals The UPS can be integrated into advanced networking environments via UPS monitoring software such as Windows-based UPS Monitor, MultiLink SiteScan 2, SNMP, etc. -
Page 90: Table 21 Liebert Nx Communication Options
10.1.4 Communication and Monitoring Liebert IntelliSlot Web Card - SNMP/HTTP Network Interface Card This network interface card provides all real-time data and status information as SNMPv1 traps for connection to a 10/100-baseT Ethernet connection. The same card also will transmit the same status information and all measured parameters for display through a Web browser. -
Page 91: 10.1.5 Configuring Baud Rates
10.1.5 Configuring Baud Rates The default baud rate for Liebert IntelliSlots is 9600. To communicate with the OCWEB-LB, Modbus/ Jbus, or the MultiLink cards, the baud rate must be set to 2400. To change the baud rate (refer to Table 21): 1. -
Page 92: Figure 56 Liebert Intellislot Web Card Display
Options Figure 56 Liebert IntelliSlot Web card display... -
Page 93: Table 22 Relay Card Pin Configuration
Relay Card The relay card provides voltage-free contact closures for remote monitoring of alarm conditions. Delivering On Battery, On Bypass, Low Battery, Summary Alarm, UPS Fault and On UPS sig- nals, the easy-to-install card integrates with AS/400 computers (additional cable required) and other relay contact monitoring systems. -
Page 94: Figure 57 Multiport 4 Card Pin Assignment
MultiPort 4 Card The MultiPort 4 card provides four sets of voltage-free contact closures for remote monitoring of alarm conditions UPS operation On Battery and Low Battery condition. A typical application is to allow a maximum of four computer systems to simultaneously monitor the status (e.g., utility power failure-low battery) of a single UPS. -
Page 95: Lbs Mode-Load Bus Synchronization
10.2 LBS Mode—Load Bus Synchronization The function of LBS is to keep the output of two independent UPS systems (single unit or multiple unit) in synchronization even when the two systems are operating in different modes (bypass/ inverter) or on batteries. It is usually used with a Static Transfer Switch connected to the critical load to achieve dual bus configuration. -
Page 96: Specifications And Technical Data
11.0 S PECIFICATIONS AND 11.1 Lug Size and Torque Requirements Use commercially available solderless lugs for the wire size required for your application. Refer to Table 24. Connect wire to the lug using tools and procedures specified by the lug manufacturer. Table 24 Torque specifications Nut and Bolt CombinationS... -
Page 97: Table 26 Distance To Connection Points On The Liebert Nx Ups
Liebert NX, then add the appropriate length from the table and adequate slack for repair and mainte- nance. Table 26 Distance to connection points on the Liebert NX UPS Connection Point on UPS Bypass AC input supply UPS output AC Battery power Auxiliary cables: Monitor board (U2) Liebert IntelliSlot Communications... -
Page 98: Cable Size And Tightening Torques
Table 28 External cabinet dimensions, including side panels Type E1 Parallel Cabinet Unit Width mm (inch) 1240 (48.8) Type E Parallel Cabinet Unit Width mm (inch) 845 (33.2) Matching Battery Cabinet Unit Width mm (inch) 845 (33.2) Table 29 Lead/Lag ratings Load Power Factor -0.5... -
Page 99: Table 32 Cable Size Tightening Torque At Liebert Nx 80Kva Ups Terminals
Table 32 Cable size tightening torque at Liebert NX 80kVA UPS terminals Cable Size (Copper Wire Only) Bus Type Main Input (Single Input) Main Input (Dual Input) Bypass Input (Dual Input) Output Table 33 Cable size tightening torque at Liebert NX 100kVA UPS terminals Cable Size (Copper Wire Only) Bus Type... -
Page 100: Battery Run Times
11.4 Battery Run Times Table 35 Estimated battery run time, minutes UPS Rating/Model 40kVA UPS UPS12-100MR UPS12-150MR UPS12-210MR 60kVA UPS UPS12-100MR UPS12-150MR UPS12-210MR 80kVA UPS UPS12-100MR UPS12-150MR UPS12-210MR 100kVA UPS UPS12-100MR UPS12-150MR UPS12-210MR 120kVA UPS UPS12-100MR UPS12-150MR UPS12-210MR Number of Cabinets Specifications and Technical Data... -
Page 101: Messages
A - UPS S PPENDIX TATUS Table 36 shows all event messages as they appear in the current status area of the LCD and in the history log, along with a description and recommended actions, if any. For further information on the current status area and the history log, see 2.11 UPS Status Messages. - Page 102 Table 36 UPS status messages Event Message This alarm is triggered by an inverter software routine when the amplitude or frequency of bypass voltage is beyond the normal range. The amplitude threshold is fixed for positive and negative 10% rating. This alarm automatically resets once the bypass voltage goes normal.
- Page 103 Table 36 UPS status messages Event Message At least one of the static switches of inverter side is open or short circuit. This fault is locked until Inverter STS Fail power off. Contact Liebert Global Services for assistance at 800-543-2378 for assistance. At least one of the static switches of bypass side is open or short-circuited.
- Page 104 Table 36 UPS status messages Event Message Rectifier, inverter and battery converter were shut down because DC bus voltage is too high. Check whether there is a fault in rectifier side. If not, check whether overload occurs. DC Bus Overvoltage Restart the inverter after resetting the fault.
- Page 105 Table 36 UPS status messages Event Message Battery Float Charging Battery is float charging Battery Boost Charging Battery is boost charging Battery Discharging Battery is discharging Battery Period Testing Battery is period self-testing. Batt. Capacity Testing Battery is capacity self-testing. Batt.
- Page 106 UPS Status Messages...
- Page 108 Embedded Computing Connectivity Embedded Power DC Power Monitoring Business-Critical Continuity, Emerson Network Power and the Emerson Network Power logo are trademarks and service marks of Emerson Electric Co. ©2007 Emerson Electric Co. Technical Support / Service monitoring@emersonnetworkpower.com Outside the US: 614-841-6755 upstech@emersonnetworkpower.com...
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