AC Power For Business-Critical Continuity Liebert NX UPS User Manual–10-30kVA, 400V, 50/60Hz
TABLE OF CONTENTS 1.0 SINGLE MODULE UPS INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2 Preliminary Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.3 Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4 Battery Power Cables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 2.4.1 2.4.2 2.4.3 2.4.4 Connection Principles. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fitting the Batteries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Connecting the Battery . . . . . . . . . . . . . . . . . . . . . . . . . .
.5 Battery Protection (settings by commissioning engineer) . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 6.0 OPERATING PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 6.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 6.1.1 6.2 Power Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FIGURES Figure i Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 Figure 17 Figure 18 Figure 19 Figure 20 Figure 21 Figure 22 Figure 23 Figure 24 Figure 25 Figure 26 Figure 27 Figure 28 Figure 29 Figure 30 Figure 31 Figure 32 Figure 33 Figure 34 Figure 35 Figure 36 Figure 37 Figure 38 Figure 39 Figure 40 Figure 41 Figure 42 Figure 43 Model number nomenclature . . . . . . . . . . . . . . . . . . . . . . . .
TABLES Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9 Table 10 Table 11 Table 12 Table 13 Table 14 Table 15 Table 16 Table 17 Table 18 Table 19 Table 20 Table 21 Table 22 Table 23 Table 24 Table 25 Table 26 Table 27 Table 28 Table 29 Table 30 Table 31 Table 32 Table 33 Table 34 Table 35 Table 36 Maximum steady state AC and DC currents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Distance from floor to connection point on the equipment . . .
Figure i Model number nomenclature NXe 0 A0 010 U Feature Set for Region Input & Output Voltage A0 - EMEA B0 - Aust/NZ 50/60Hz Voltage Output kVA C0 - Japan Revision to Base Unit D0 - China 010 E0 - Latin Amer 015 F0 - Other 020 Code 220/380 F 230/400 U 240/415 G NX Product Line UPS Single Module Liebert NXe UPS module ratings: 10, 15, 20, 30kVA (with internal battery) Example: NXE0A0010U = 10kVA module for Europe and Middle East, 400V/230V output Options Battery cabinet Model I
SAFETY PRECAUTIONS This manual contains information concerning the installation and operation of this Emerson Network Power Liebert NX™ Uninterruptible Power System (UPS). This manual should be read before commencing installation. The UPS must be commissioned and serviced by an engineer approved by the manufacturer (or agent). Failure to do so could result in personnel safety risk, equipment malfunction and invalidation of warranty.
User-Serviceable Parts All equipment maintenance and servicing procedures involving internal access requires the use of a tool and should be carried out only by trained personnel. There are no user-serviceable parts behind covers requiring a tool for removal. This UPS is fully compliant with safety regulations for equipment located in an operator accessible area. Hazardous voltage is present within the UPS and battery enclosure but out of reach of non-service personnel.
Single Module UPS Installation 1.0 SINGLE MODULE UPS INSTALLATION 1.1 Introduction This following section describes the requirements that must be taken into account when planning the positioning and cabling of the Liebert NX uninterruptible power supply and related equipment. This chapter is a guide as to general procedures and practices that should be observed by the installing engineer. The particular conditions of each site will determine the applicability of such procedures.
Single Module UPS Installation 1.3 Location 1.3.1 UPS Room The UPS and its internal battery is intended for indoor installation and should be located in an environment with clean air and with adequate ventilation to keep the ambient temperature within the specified operating range (see Table 30). All models in the Liebert NX UPS range are air-cooled with the aid of internal fans.
Single Module UPS Installation 1.4 Positioning The cabinet is mounted on four castor-wheels for ease of positioning and for short distance movement. Jacking feet are provided to prevent the UPS from moving once it has been wheeled to its final position.
Single Module UPS Installation 1.4.4 Clearances The Liebert NX has no ventilation grilles at either side of the UPS. To enable routine tightening of power terminations within the UPS, in addition to meeting any local regulations, Liebert recommends providing adequate clearance in the front of the equipment for unimpeded passage of personnel with the doors fully opened. It is important to leave of 150mm (5.9") clearance behind the UPS to permit adequate circulation of air coming out of the unit. 1.4.
Single Module UPS Installation Earth Leakage (RCD): Any residual current detector (RCD) installed upstream of the UPS input supply must be: • sensitive to DC unidirectional pulses (Class A) • insensitive to transient current pulses, and • must have an average sensitivity, adjustable between 0.3 and 1A.
Single Module UPS Installation 1.6 Power Cables The cable design must comply with the voltages and currents provided in this section, follow local wiring practices and take into consideration the environmental conditions (temperature and physical support media). For cable entry terminal, refer to Figure 22. ! WARNING Before starting the UPS, ensure that you are aware of the location and operation of the external isolators that connect the ups input/bypass supply to the mains distribution panel.
Single Module UPS Installation 1.6.1 Cable Termination NOTE The operations described in this section must be performed by authorised electricians or qualified technical personnel. If you have any difficulties, do not hesitate to contact our Customer Service and Support Department. See the back page of this manual for contact information. Once the equipment has been finally positioned and secured, connect the power cables as described in the following procedure.
Single Module UPS Installation Output System Connections 6. Connect the system output cables between the UPS output (oA-oB-oC-N terminals) and the critical load and tighten the connections to 5 Nm (M6 Bolt). Ensure correct phase rotation. ! WARNING If the load equipment will not be ready to accept power on the arrival of the commissioning engineer, ensure that the system output cables are safely isolated at their ends. Internal UPS Battery Connection 7.
Single Module UPS Installation 1.7 Control Cables and Communication 1.7.1 Monitor Board Features Based on your site’s specific needs, the UPS may require auxiliary connections to manage the battery system (external battery circuit breaker, battery temperature sensor), communicate with a personal computer or provide alarm signaling to external devices or for Remote Emergency Power Off (REPO). The monitor board, arranged for this purpose, is located on the rear of the operator access door.
Single Module UPS Installation 1.8 Dry Contacts The UPS provides input dry contacts and output dry contacts. 1.8.1 Input Dry Contacts There are several input dry contacts at the X3 slot.
Single Module UPS Installation 1.8.3 External Circuit-Breaker Interface J10 is the interface to any external battery circuit breaker (BCB). External circuit-breaker interface Table 5 Position Name Description J10.1 DRV BCB Driver Signal - (reserved) J10.2 FB BCB Contact State -(reserved) J10.3 GND J10.4 OL Power Ground BCB On-Line - Input - This pin will become active when BCB interface is connected. (N.O.) NOTE All auxiliary cables of terminal must be double-insulated. Wire should be 0.
Single Module UPS Installation 1.8.4 Output Dry Contacts There are three output dry contact relays at the X1 slot (see Figure 5 and Table 6) Figure 5 Output dry contacts and EPO wiring +12V Table 6 X2 ACF_O J28 ACF_S ACF_C J25 INV_O INV_C BFP_O J21 BFP_S BFP_C J13 INV_S X1 EPO - NO EPO - NC Output dry contact relays Position Name Description J13.2 BFP_O Bypass feedback protection relay; normally open; closed when bypass SCR is shorted J13.
Single Module UPS Installation 1.8.5 Emergency Power Off Input The UPS has an Emergency Power Off (EPO) function that operates by a button on the control panel or by a remote contact provided by the user. The EPO button is under a hinged, clear plastic shield. The X2 slot, shown in Figure 5, is the remote EPO input interface.
Single Module UPS Installation Serial Ports RS232-1 and RS232-2 RS232-1 provides serial data and is intended for direct use with Liebert MultiLink monitoring and server shutdown software. RS232-2 provides serial data and is intended for use by authorized commissioning and service personnel. These serial ports are shared with the optional Web browser, SNMP, ModBus and relay cards. Refer to Table 28 regarding compatibility of simultaneous use.
Battery Installation 2.0 BATTERY INSTALLATION 2.1 Introduction The UPS battery bank consists of battery blocks connected in series to provide a D.C. string voltage as required by the UPS converter. The 'AUTONOMY TIME' (the time during which the battery can maintain supply to the load in the event of a mains failure) is limited by the ampere-hour capacity of the battery blocks and in some cases this results in several strings being connected in parallel.
Battery Installation 2.2 Safety Special care should be taken when working with the batteries associated with the Liebert NX UPS system. When all the cells are connected together, the battery terminal voltage is potentially hazardous. The battery installation must be segregated from all but appropriately qualified maintenance personnel by locating the cells in a key-lockable cabinet or in a purpose-designed, dedicated battery room.
Battery Installation 2.3 Battery Cabinet 2.3.1 Introduction This cabinet can also be used in conjunction additional cabinets, to provide the necessary accommodation required by the larger cells associated with system’s having a long autonomy time. Where two (or more) cabinets are used they are positioned alongside each other and secured and bonded together. If the cabinet(s) is located immediately adjacent to the main UPS equipment the two units are bolted together. 2.3.
Battery Installation 2.3.6 Battery Temperature Sensor (Optional) The optional external battery temperature sensor kit contains one probe and one temperature transport board as illustrated in Figure 7. It is connected to the UPS Monitor Board. Figure 7 Single temperature sensor and monitor board-U2 Name: W2 L=5m Temperature Sensor Name: W1 L=30m X7 NC 12V OUT GND + IN TMP-2 Monitor Board – U2 -12V BAT-T GND UPS Cable W2 is packed with the temperature sensor. 2.3.
Battery Installation 2.3.9 General Arrangement Drawings Refer to Figures 8 and 10 for general arrangement of battery cabinet models. Figure 8 Battery cabinet bottom cable entry location Bottom View 700 250 82,5 100 83 1400 620 828 All dimensions are expressed in millimeters.
Battery Installation Figure 9 Battery cabinet with fuse or optional circuit breaker locations Bottom cable entry 22
Battery Installation Figure 10 Battery cabinet internal layout Positions of captive nuts for grille mounting 292 328,4 102 Minimum service space 65mm B 65 29 280 280 280 280 65 Captive nut M6 43 215 1. 3 Layers: Largest battery dimensions: 201x170x190 (LxWxH) 170 10 170 5 218 201 10 201 5 15 635 201 10 201 10 201 1 Layer: Largest battery dimensions: 201x170x190 (LxWxH) 368 7 635 170 10 170 10 170 10 170 308,6 218,5 437,8 280 65 15 738 All measurements are in millimeters.
Battery Installation Figure 11 Battery cabinet, bottom entry 12 11 13 4 6 1 7 8 4 6 13 12 8 9 5 AMNXE0NBCSL4BT 2 10 3 Item # Item Name 1 Grille steel 2 Grille steel 3 Middle pillar 4 Cover module BC Small NXe 5 Ground bus 6 Captive nut M4 7 Captive nut M6 8 Screw flange M6x16 9 Nut flange M6 10 Screw M6x16 countersink 11 Spring washer M4 12 Flat washer M4 13 Screw mushroom head cross M4x12 2.4 Battery Power Cables 2.4.
Battery Installation 2.4.2 Fitting the Batteries 1. In general, at least 10mm (3/8") must be left unobstructed on all vertical sides of the battery blocks to permit free air movement around the cells. 2. Clearance should be allowed between the top of the cells and the underside of the shelf above (this is necessary for monitoring and servicing the cells). 3. When installing the batteries on racks always work from the bottom shelf upwards to prevent raising the centre of gravity. 2.4.
UPS Multi-Module Installation 3.0 UPS MULTI-MODULE INSTALLATION 3.1 General The installation of a multi-module UPS configuration must follow the installation procedure for a single UPS module with the additional requirements detailed in this chapter. In addition to the local EPO push button on the front panel of the UPS module (that stops operation of that module), the UPS supports also a remote emergency stop to permit simultaneous multi-module shutdown. NOTES 1.
UPS Multi-Module Installation 3.2 Paralleled UPS Modules The basic installation procedure of a parallel system comprising two or more UPS modules is the same as that of single module system. The following sections only introduce the installation procedures specific to the parallel system. 3.2.1 Cabinet Installation Place the UPS modules side by side and interconnect as shown in Figure 14.
UPS Multi-Module Installation Figure 15 Dry contacts, multiple UPS modules with distribution panel Input Distribution UPS 1 UPS 2 UPS N M3 Board X3 M3 Board X3 M3 Board X3 Ext. Maint. Ext. Out Ext. Maint. Ext. Out Ext. Maint. Ext. Out 1 2 3 4 1 2 3 4 1 2 3 4 Q1Ext Q2Ext Distribution Panel QUPS QnExt QByp To Load 3.2.2 External Protective Devices Refer to the instructions in 1.0 - Single Module UPS Installation. 3.2.
UPS Multi-Module Installation 3.2.4 Control Cables Intermodule Control Shielded and double insulated control cables available in lengths of 5, 10 and 15 meters must be must be interconnected in a ring configuration between UPS modules as shown below. The parallel control board is mounted on the top, behind protective cover of each UPS module (refer to Figure 23). The ring configuration ensures high reliability of the control. Refer to Figure 16.
UPS Multi-Module Installation 3.3.3 Power Cables The wiring of power cables is similar to that of single module system except that the output of the upstream UPS is fed into the bypass input of the downstream UPS, and the load is fed by the downstream UPS through its inverter or bypass. The bypass and the main input sources must be referenced to the same neutral potential and input earth leakage monitoring devices, if installed, must be located upstream of the common neutral sinking point.
UPS Multi-Module Installation 3.4 Dual Bus System 3.4.1 Cabinet Installation The Dual Bus System consists of two independent UPS configurations each consisting of one or more UPS modules. Dual Bus Systems are high availability configurations suitable for loads with multiple input terminals. For single input loads an optional Static Transfer Switch may be added and the standard Load Bus Synchroniser activated.
UPS Multi-Module Installation 3.4.4 Control Wires For Liebert NX to NX dual bus configuration, interconnect the optional DBS cable between any DBS ports of two parallel systems as illustrated in Figure 19.
Installation Drawings 4.0 INSTALLATION DRAWINGS Figure 20 Electrical connections Earth UPS To Customer’s Safety Earth A X3 Ext. Maint. B Parallel Board C Ext.
Installation Drawings Figure 21 General arrangement—10-30kVA UPS module 600 700 10mm dia threaded mounting holes 2 7 86.5 1400 1 Leve Detail A, rear of unit shown without side panel Leveling feet 90 LEFT SIDE VIEW FRONT VIEW 420 180 3 5 4 867.5 708 572 6 1380 166 210 236 346 520 625 BOTTOM VIEW TOP VIEW All dimensions are in mm.
Installation Drawings Figure 22 10-30kVA NX front view with doors open 1) Main/Bypass Input terminal (T1) 2) Battery /Output terminal (T2) 3) Input circuit breaker (CB1) 4) Rotary switch (SW1) 5) Monitor board (U2) 5 4 3 2 1 T2 External Battery Input Output T1 Main Input Bypass Input 35
Installation Drawings Figure 23 Location of parallel logic board M3 Battery Start Interface Parallel Logic Board NXe 10-30kVA Top View 36
Installation Drawings Figure 24 Internal battery layout and connecting—GP12120 F2 (12AH/12V) BOTTOM LAYER Layer 5 Layer 4 43 W501 4pcs Layer 3 TOP LAYER Layer 1 Layer 2 41 44 42 W500 34Pcs 77 55 33 1 1 W503 BLK W502 W511 BLK W510 W515 BLK W514 W513 BLK W512 W506 W506 BLU W504 A A BLK W508 RED W508 W509 W505 J2 J4 J6 NIN +BATT IN BATTERY INTERCONNECT WIRING DIAGRAM W507 NOTE -BATT IN 1. TYPICAL USED FOR:GP 12120 F2 (12AH/12V) 2. REMOVE 43&44 WHEN 42 JARS ARE USED.
Installation Drawings Figure 26 Internal battery layout 347mm 151mm 562mm 160mm 160mm 160mm 160mm Battery 136mm 38
Operation 5.0 OPERATION ! WARNING Hazardous Mains and / or Battery Voltage present behind covers. No user-serviceable parts are located behind covers that require a tool for their removal. Only qualified service personnel are authorised to remove such covers. 5.1 Introduction Liebert’s NX™ Uninterruptible Power System system provides continuous, high-quality AC power to your business-critical equipment, such as telecommunications and data processing equipment.
Operation 5.1.2 Static Transfer Switch The circuit blocks labeled Static Switch in Figure 27 contain electronically controlled switching circuits that enable the critical load to be connected to either the inverter output or to a bypass power source via the static bypass line. During normal system operation the load is connected to the inverter; but in the event of a UPS overload or inverter failure, the load is automatically transferred to the static bypass line.
Operation 5.1.4 Redundant Control Power Supply Board The UPS is equipped with two identical and fully redundant control power supply boards. Each of them takes inputs from the AC and DC sources. When one of the sources or even if one of the control power boards fails, the UPS system can still operate normally. This feature further enhances the reliability of the system. 5.1.
Operation 5.2.1 Features of NX Multi-Module UPS Configurations 1. The hardware and firmware of single module UPS units is completely compatible with the requirements of a multi-module system. Multi-module configuration is achieved merely through settings in configuration software. 2. Parallel control cables are connected in a ring, providing both performance and redundancy. Dual-bus control cables are connected between any two UPS modules of each bus.
Operation 5.3.4 Bypass Mode If the inverter overload capacity is exceeded, or if the inverter becomes unavailable for any reason, the static transfer switch will perform a transfer of the load from the inverter to the bypass source, with no interruption in power to the critical AC load. Should the inverter be asynchronous with the bypass, the static switch will perform a transfer of the load from the inverter to the bypass with interruption in power to critical AC load.
Operation 5.4 Battery Management—Set During Commissioning 5.4.1 Normal Function • Constant charging current—Current can be set up to limit charging power. • Constant boost voltage boost (if applicable)—Voltage of boost charging can be set as required by the type of battery. For Valve Regulated Lead Acid (VRLA) batteries, maximum boost charge voltage should not exceed 2.4V / cell. • Float Charge—Voltage of float charging can be set as required by the type of battery.
Operating Procedures 6.0 OPERATING PROCEDURES ! WARNING Hazardous mains and / or battery voltage present behind covers. No user-serviceable parts are located behind covers that require a tool for their removal. Only qualified service personnel are authorised to remove such covers. 6.1 Introduction The NX can operate in any of four modes, as shown in Table 9.
Operating Procedures 6.2 UPS Startup The 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. 6.2.1 Start-Up Procedure To start the UPS from a fully powered-down condition: 1. Open the UPS door to gain access to the main power switches. ! WARNING During this procedure the output terminals will become live.
Operating Procedures 5. Turn the rotary switch to NORMAL, then 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 transfers from bypass to inverter, the bypass indicator turns off and the inverter and load indicators turn on. The UPS is operating normally. The UPS mimic display indicators will: 6.2.
Operating Procedures 6.3 Switching the UPS from Normal to Maintenance Bypass 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. If those conditions are not present, there is a risk of a short interruption in powering the load. This procedure assumes that UPS is operating normally. 1.
Operating Procedures 6.5 Powering Down the UPS and Maintaining Power to Load NOTE An external Maintenance Bypass Cabinet must be installed before attempting to perform the following procedure If the UPS needs to be shut down completely while maintaining power to the load, follow these steps: 1. Perform Steps 1 through 5 in 6.3 - Switching the UPS from Normal to Maintenance Bypass. 2. Close the external maintenance bypass rotary switch to Maint position.
Operating Procedures 6.6 Emergency Shutdown With EPO This circuit has been designed to switch off the UPS in emergency conditions (i.e., fire, flood, etc.). The system will turn off the rectifier, inverter and stop powering the load immediately (including the inverter and bypass), and the battery stops charging or discharging. If the input utility is present, the UPS’s controls will remain active; however, the output will be turned off.
Operating Procedures 6.9 Language Selection The LCD menus and data display are available in 12 languages: Chinese, Dutch, English, French, German, Italian, Japanese, Polish, Portuguese, Russian, Spanish and Swedish.To select a different language than the one being displayed: 1. From the main menu, press the F1 (shift) key to move the cursor to the menu at the top of the screen. 2. Press F2 and F3 (left and right arrows) as needed to select the Language menu. 3.
Operating Procedures 6.12 Isolating One Module in a Multi-Module System NOTE The Multi-Module system must have at least one UPS module redundant in the system and have an external output breaker installed with interlocking cables connected to the UPS module. The inverter firmware in each UPS in the system must be I140 or greater. 1. With all UPS modules in the system in Normal mode, open the external output isolator.
Operating Procedures 6.13 Inserting One Module into a Multi-Module System This procedure is indicated to reintegrate 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 system has been commissioned by authorized personnel and the external power isolators are open. WARNING ! Mains voltage will be applied to UPS output terminals.
Operator Control Panel and Display 7.0 OPERATOR CONTROL PANEL AND DISPLAY 7.1 Introduction The operator control panel and display is located on the front door of the UPS. The panel is the access point for operator control and monitoring of all measured parameters, UPS and battery status and of event and alarm logs.
Operator Control Panel and Display 7.1.1 Mimic Power Flow The LEDs mounted on the mimic flow chart represent the various power paths and current UPS operational status.
Operator Control Panel and Display 7.1.3 Direct Access Push Buttons (Keys) Emergency Power Off (EPO) Disconnects Power to the Load. Disables rectifier, inverter, static bypass and battery operation. Inverter ON Enables Inverter Operation Inverter OFF Disables Inverter Operation Fault clear Resets blocked UPS functions (subject to any fault being cleared) Silence ON/OFF Toggle type buzzer mute. Any new fault re-enables the buzzer.
Operator Control Panel and Display The function of keys F1 to F4 is shown by a self-explanatory icon as appropriate for the particular window. As shown in Figure 32 above, pressing F1 moves the cursor (resting in “OUTPUT”) from the UPS Menu Window (2) to current record window (4) where it would first rest in “Input breaker closed’. In a similar manner, pressing F2 would move the cursor from the Output data window to the Bypass data window. The summary menu tree is shown below. Refer to 7.
Operator Control Panel and Display 7.1.5 Detailed Description of Menu Items The description that follows refers to the graphic LCD monitor window shown on Figure 32. UPS System Window: This fixed-pane window displays current time and date and identifies the UPS, its configuration and its status.
Operator Control Panel and Display Table 21 Menu Type System Battery Records Language Settings Command (start/stop battery & system tests) Version Descriptions of UPS menus and data window items (continued) Item Type Explanation Sout (kVA) Sout: Apparent power Pout (kW) Pout: Active power Qout (kVAR) Qout: Reactive power Single unit, no parallel data When configured as a single unit, UPS has only native load, no system load.
Operator Control Panel and Display Current Record Window Keeps a log the events that resulted in the current mode of operation. Ignores transient conditions that have been resolved. Use “page” (F1) and up / down arrow to read the events. For a complete history log, refer to the Records tab of the Menu and Data Window. Refer to Table 22 for a complete list of supported status messages. 7.
Operator Control Panel and Display Table 22 UPS messages (continued) Message Description / Suggested Action (if any) Bypass Abnormal This alarm is triggered by an inverter software routine when the amplitude or frequency of bypass voltage exceeds the limit. This alarm automatically resets once the bypass voltage goes normal. First check if there are some relevant alarms such as “Bypass disconnect open”, “Bypass phase reverse” and “Mains neutral lost”. If they appear, solve them first. 1.
Operator Control Panel and Display Table 22 UPS messages (continued) Message Description / Suggested Action (if any) Unit Over load Timeout The UPS is confirmed to overload and the overload times out. Note 1: the highest loaded phase will indicate overload timing-out first. Note 2: When the timer is active then alarm “unit overload” should also be active as the load is above nominal. Note 3: When the timer has expired, the inverter Static Switch is opened and the load transferred to bypass.
Operator Control Panel and Display Table 22 UPS messages (continued) Message Description / Suggested Action (if any) Fault Reset Fault clear direct access key pressed Alarm Silence Silence On/Off direct access key pressed Turn On Fail Inverter failed to turn on when Inverter On direct access key was pressed. This may be as a result of Invalid Operation (Maintenance bypass on) or DC bus or rectifier not ready.
Operator Control Panel and Display 7.3 Prompt (Pop-Up) Windows The prompt window is displayed during the operation of the system to alert the user to certain conditions and / or to require user confirmation of a command. Table 23 7.4 Prompt windows, meanings Prompt Meaning Transfer with interrupt, please confirm or cancel Inverter and Bypass supplies are not synchronised and any load transfer between the supplies will cause a brief load interruption.
Operator Control Panel and Display 7.5 Default Screen Saver This default screen is displayed following at least 2 minutes of operation with no new alarm. After another delay, the backlight turns off. Press any key (F1-F4 or Help) to reactivate the screen.
Options—For Assembly Inside the UPS Cabinet 8.0 OPTIONS—FOR ASSEMBLY INSIDE THE UPS CABINET Several items of optional equipment are available for connection to the Liebert NX UPS. These are described in this section of the manual and should be fitted prior to installation. 8.1 Protection 8.1.
Options—For Assembly Inside the UPS Cabinet 8.1.2 Redundant Fan for Power Module In addition, to ensure sufficient cooling power at various operation modes with 100% rated load, a redundant power module fan set can be supplied, thus ensuring continuity of UPS operation even with the failure of some fans. No extra footprint is required.
Options—For Assembly Inside the UPS Cabinet 8.1.3 OC 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 network and in addition the same card will also transmit the same status information and all measured parameters for display via a Web browser. This card is supported in the top, middle and bottom Intellislot bays.
Options—For Assembly Inside the UPS Cabinet 8.1.4 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 signals, the easy-to-install card integrates with AS/400 computers (additional cable required) and other relay contact monitoring systems. The Relay card is rated for 24 VAC/VDC at 1A and supported in any of the three NX Intellislot bays.
Options—For Assembly Inside the UPS Cabinet Figure 41 SiteNet MultiPort4 Intellislot pin configuration CPU CPU UPS CPU CPU Table 27 Pin SiteNet MultiPort4 Intellislot pin assignment Assignment Description 1 Low Battery 2 Not Used 3 Not Used 4 Not Used 5 Not Used 6 Not Used 7 Low Battery Common 8 Utility Fail Common 9 Utility Fail 70
Options—For Assembly Inside the UPS Cabinet 8.2 OC485 Web Card – Modbus, Jbus, IGM Net The OpenComms 485 Card facilitates SiteScan Web or Building Management Systems monitoring. The RS232 port is used for connection to a personal computer for setting up. The RS-485 port supports IGM Net and Modbus/JBus protocols and maps the operation of the UPS including status, alarms and data (voltages, currents, frequency, power, power factor, temperatures etc.
Options—For Assembly Inside the UPS Cabinet 8.2.2 Dust Filter for 10-30kVA Installing the two dust filters in the Liebert NX requires only a Phillips screwdriver. Each filter is held in place by a bracket on either side of each filter. To install each filter: 1. Open the UPS door and locate the filters (on the back side of the front door; see Figure 43). 2. Remove one bracket and loosen the screw on the second bracket. The second bracket need not be removed (see Figure 43). 3.
Technical Specifications 9.0 TECHNICAL SPECIFICATIONS 9.
Technical Specifications Table 32 Mechanical characteristics Rated Power, kVA Dimensions, WxDxH Unit of Measurement 10 15 20 30 600x700x1400 (23-9/16x27-5/8x55) mm (in) Mass Mass without batteries kg (lb) 180 (397) 204 (450) 204 (450) 210 (463) Finish N/A Pantone 877 (Silver grey) equivalent Becker Silver epoxy polyester powder 041-37-2 Protection Degree, IEC (60529) N/A IP20 (finger-proof with front doors open or closed) Table 33 Rectifier AC input (mains) Rated Power, kVA Unit of
Technical Specifications Table 34 Battery Intermediate DC Circuit Rated Power, Unit of kVA Measurement Battery Bus VDC Voltage Number of Lead-Acid Cells Nominal Maximum Float Voltage 10 15 20 Nominal: 480V (VRLA Float charge is 540V) Range: 400V - 616V 30 240 = [40 x 6-cell (12V) blocks] 264 = [44 x 6-cell (12V) blocks] 2.25 V/cell (selectable from 2.2 –2.
Technical Specifications Table 36 Bypass mains input Rated power, kVA Unit of Measurement Rated AC Voltage 1 VAC 10 15 20 30 380/400/415 V three-phase four-wire, sharing neutral with the rectifier input and providing neutral reference to the output Rated Current 380V 400V 415V Overload Capacity Upstream Protection, Bypass Line (by others) Current Rating of Neutral Cable Frequency 2 Transfer Time (between bypass and inverter) Bypass Voltage Tolerance Bypass Frequency Tolerance Synchronisation - W
Technical Specifications NOTES 77
Technical Specifications 78
Ensuring The High Availability 0f Mission-Critical Data And Applications. Emerson Network Power, the global leader in enabling business-critical continuity, ensures network resiliency and adaptability through a family of technologies—including Liebert power and cooling technologies—that protect and support business-critical systems. Liebert solutions employ an adaptive architecture that responds to changes in criticality, density and capacity.
