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De-Energize the Liebert Nx 480 with Bypass Distribution Cabinet (BDC) ... . 100 11.6 Energize Nx 480 with Bypass Distribution Cabinet (BDC) ......100 11.7 Auto Restart .
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FIGURES Figure 1 Cabinet arrangement—Liebert NX units and battery cabinets......11 Figure 2 Cabinet arrangement—Liebert NX UPS, battery cabinets and Liebert NX bypass distribution cabinets .
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Figure 33 Liebert NX 160-200kVA main components—typical unit ....... 59...
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. Retain this manual for use by installing personnel.
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This unit is not designed for use in a residential area. Operation of this unit in a residential area may cause harmful interference that the user must correct at his own expense. ® ™ Liebert...
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WARNING Risk of electric shock. Can cause injury and death. The Liebert NX’s internal batteries are connected and energized even if the UPS is turned Off. To minimize the risk of injury, a properly trained and qualified service person should disconnect the batteries before any maintenance is performed on the unit.
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Risk of replacing battery with an incorrect type. Can cause property damage injury and death. Dispose of used batteries according to the instructions. When replacing batteries, replace with the same manufacturer and type, or equivalent. See your local Emerson representative for a list of approved batteries. ® ™ Liebert...
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 ® ™ Liebert...
SmartAisle design approach. The Liebert NX supplies power that is free of the disturbances and variations in voltage and frequency common to utility power, which is subject to brownouts, blackouts, surges and sags. The Liebert NX utilizes the latest in high-frequency, double-conversion pulse width modulation technology and fully digital controls to enhance its reliability and increase the ease of use.
Installation NSTALLATION This section describes the Liebert NX environmental requirements and mechanical considerations that must be taken into account when planning the positioning and cabling of the UPS equipment. Because every site is unique, this section presents a guide to general procedures and practices that should be observed by the installing engineer, rather than step-by-step installation instructions.
74-80°F, (23-27°C). The Liebert NX UPS cooled by internal fans. Cooling air enters the unit through the front of the unit and is exhausted out the top. To permit proper air flow and prevent overheating, do NOT block or cover the ventilation openings or blow air down onto the unit.
To move the UPS and optional battery cabinets: • The Liebert NX may be rolled on its casters when moving the unit a short distance. For longer dis- tances, move the UPS with a forklift or similar equipment to ease the relocation and to reduce vibration.
2.6.3 Cable Entry Cables can enter the Liebert NX from the top or bottom. Cable entry is made possible by removing a metal plate attached to the UPS. These plates are designed to allow the personnel to punch holes for fitting and securing the conduit.
2.6.4 Optional Cabinets The Maintenance Bypass Cabinet must be cabled and bolted to the Liebert NX before the UPS and bypass cabinet are moved into their final position. Connect the input wiring to the Maintenance Bypass Cabinet ONLY after the units are connected and positioned.
Installation Figure 2 Cabinet arrangement—Liebert NX UPS, battery cabinets and Liebert NX bypass distribution cabinets Liebert NX Liebert Bypass Battery Cabinet Distribution Cabinet Front of Units Liebert NX Liebert Bypass Battery Battery Battery Distribution Cabinet Cabinet Cabinet Cabinet Front of Units ®...
WARNING Risk of electrical shock. Can cause injury and death. 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 to the power distribution panel.
3.1.2 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).
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 3. These busbars are accessible when the front side panel is removed.
The operations described in this section must be performed by authorized electricians or qualified technical personnel. If you have any difficulties, contact your local Emerson representative or Emerson Network Power Liebert Services. NOTE Hydraulic pressure pliers, combinative tools and piston ring pliers should be used to connect AC wiring.
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1. The transformers are delta/wye isolation transformers where the wye secondary’s are connected to the NX 480V UPS. 2. The individual transformer used to supply the Bypass of the NX 480V is solidly bonded to earth ground at the transformer.
• Emergency Power Off control (EPO) • Environmental parameter input interface • User communication (for data setting and user background monitor) ® • Liebert IntelliSlot interface • Modem interface • Temperature detect interface Figure 4 shows the relationship and connection between the monitoring (U2) board and other boards in the UPS.
Electrical Connections 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. 3.3.1 Input Dry Contacts There are several input dry contacts at the X3 slot.
Main input fault relay. Normally closed. Open when main input is in fault; J25.4 ACF_C 5A, 250VAC/24 VDC NOTE All auxiliary cables of terminal must be double-insulated. The wire must be 600V, 18-16 AWG stranded for maximum runs between 82 and 197 feet (25-60m), respectively. ® ™ Liebert...
Normally Closed EPO – X2: 1,2, these terminals are supplied factory-linked on the monitor board and must remain installed if using NO contacts. NOTE All auxiliary cables of terminal must be double-insulated. The wire must be 600V, 18-16 AWG stranded for maximum runs between 82 and 197 feet (25-60m), respectively. ® ™ Liebert...
When replacing batteries, replace with the same manufacturer and type, or equivalent. See your Emerson representative for a list of approved batteries. Safety Special care should be taken when working with the batteries associated with the Liebert NX ™ system equipment. When all batteries are connected together, the battery terminal voltage may exceed 480V and is POTENTIALLY LETHAL.
Any battery system should be installed by properly trained and qualified personnel. When installing an external battery cabinet that is NOT a Liebert NX battery cabinet, the customer must provide overcurrent protection. See Table 8 for sizing of protection devices.
4.3.2 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).
Verify that the battery area has adequate ventilation and battery operating temperature complies with the manufacturer's specifications and with all applicable national and local codes. If you have any questions concerning batteries, battery racks or accessories, contact Liebert Services at 1-800-543-2378.
Battery Installation BCB Shunt Trip The Liebert NX battery cabinet has the shunt trip installed in the circuit breaker. When a DC ground fault (using the optional DC Ground Fault kit), a battery overtemperature or EPO is activated, the shunt trip will open the circuit breaker.
LBS will operate normally without an extra LBS control box or interface box. The LBS port is X4 on the Parallel Board (M3). The Parallel Board is on the interior of the Liebert NX, above and left of the power electronics; see Figures 30 and 33.
X2-1 X2-2 X2-1 X1-1 X1-2 X1-1 X1-2 X1-1 X1-2 X1-1 X1-2 Parallel System I Parallel System II The LBS function is activated with configuration software; when the LBS takes effect, the graphic LCD will display “LBS active.” ® ™ Liebert...
5.2.2 Features of Parallel System • The controls for parallel UPS module operation are standard in the Liebert NX, and the configu- ration can be set up by changing the settings in configuration software. • It is easy to install the parallel cables in a ring, providing high reliability and redundancy. And the intelligent paralleling logic provides the user with maximum flexibility.
UPS. • 40-80kVA Liebert NX units can be installed in parallel with 80-120kVA Liebert NX units. • 80-120kVA Liebert NX units can be installed in parallel with 160-200kVA.
Parallel Control Cables Parallel System Control Cables Make the connections listed below on the parallel logic board (M3) inside the Liebert NX. (See Figure 30 for the location of the parallel logic board): Shielded and double-insulated control cables, available in lengths of up to 100 feet (30m), must be interconnected in a ring configuration between UPS modules as shown below.
X3 on the Parallel Logic Board (M3). See Figure 18. 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. NOTE For startup procedure, 11.2 - UPS Startup. ® ™ Liebert...
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 19 Connecting EPO push button SINGLE MODULE Liebert NX Monitor Board EPO_NO +12V +12V...
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: • UL Standard 1778 • CSA 22.2, No. 107.1 • FCC Part 15, Class A •...
Bypass overload 111% to 125%: 10 Minutes capacity (all ratings) 126% to 150%: 1 Minute 1000%: 100 Milliseconds See Table 8 for current ratings. Bypass frequency synchronization range setting should be wider than bypass frequency shift range. ® ™ Liebert...
Rev. 3 Normal (UPS) Mode While the Liebert BDC is in Normal mode (MBB open; BIB/MIB closed), the UPS is supplying the connected load with continuous, high-quality AC power. In this mode of operation, the load is protected by the UPS.
Locating the Cabinet This Liebert BDC may be mounted to the left of the UPS or installed as a stand-alone unit. In either case, ensure that the unit is in a well-ventilated area and that there is clearance for access to the switches and cable connections as required by national and local codes.
5. Locate UPS input and output cables and access panel to UPS on lower right side. NOTE If the Liebert BDC is not to be bolted to the UPS, use either top or bottom access plate. 6. Connect the system ground cable between the Liebert BDC and UPS and tighten the connections to 240lb-in.
™ Liebert BDC Figure 21 Liebert BDC connection to UPS NOTES 1. All Liebert-supplied cable must be repositioned prior to and while the cabinets are being placed in their final installed location. 2. All interconnection hardware supplied by Emerson ®...
9. Clearance of 36" (914mm) minimum is recommended at front and rear for service access. 2. Using supplied hardware, bolt the cabinets together. The bolts may be inserted from either the UPS side or from the Liebert BDC side, whichever is more convenient. ® ™...
™ Liebert BDC ™ Figure 24 Outline drawing, Liebert BDC , 47" cabinet 47" (1194mm) R 25.3" (643mm) x R 25.3" (643mm) x 180° Door Swing° 180° Door Swing° Output Conduit Plates 11.9" x 15.7" (302 x 400mm) 36.4" 33.8"...
Installation Drawings NSTALLATION RAWINGS The diagrams in this section illustrate the key mechanical and electrical characteristics of the Liebert NX UPS System cabinets. Figure 25 Outline drawing, Liebert NX 40-120kVA Power Cable Entry 25.5 (648) 3.7 x 22.8 (94x 580) 23.6 (600)
Installation Drawings Figure 26 Terminal details, 34" battery power pack system for Liebert NX 480V UPS Transformer for Alber Detail B monitoring system (optional) Fuse input Alber monitoring system (optional) 2.3 (59) Terminal Block (-) Negative Aux. Contacts TOP VIEW DETAIL B Ø...
Installation Drawings Figure 28 Liebert NX 160-200kVA dimensions—front and left side 39.0 (990) to Display 38.5 (978) 48.9 (1242) 61.9 (1573) Power Cable Entry Low Voltage 14 x 13 (355x330) Entry 5.1 x 3.9 (130x100) .8 (19) 2.7 (68) Front .9 (23)
Installation Drawings Figure 29 Liebert NX 160-200kVA dimensions—front and left side Ø .39 (10) Typ Ground (25) (150) 20.3 10.1 (516) (258) (203) DETAIL A 10.6 Input/Output/Bypass (268) FRONT LOWER RIGHT SIDE FRONT Ø .39 (40) (10) Typ Right Front Corner...
Installation Drawings Figure 34 Liebert NX 40-120kVA cable connections NOTES 1. All dimensions are millimeters (in.). (23.6") 2. Top and bottom cable entry available through removable access plates. Remove, punch to accommodate conduit size and replace. 3. Control wiring and power wiring must be run in separate conduit.
NOTE: If floor stand is used the weight of the unit must be supported under all casters. Mounting holes same spacing front and rear. 13. Battery-support tray connects to the front of the cabinet with the support brackets. Without the support, the battery may fall out of the cabinet. U3819204 ® ™ Liebert...
Figure 39 Terminal details, 49" battery power pack system Negative Positive Positive Detail A Ground Transformer for Alber Monitoring System (Optional) Terminal Block / Aux Contacts Fused Input Top View for Alber Monitoring Detail B System (Optional) (without BCB Cover Plate) ® ™ Liebert...
Installation Drawings Figure 40 Liebert NX 160-200kVA UPS to 49" battery cabinet interconnection NX 160-200KVA UPS Module Front View 49" Battery Cabinet Right-Side Views NOTES: 1. All cables must be repositioned prior to and while setting the cabinets in their installed location.
Installation Drawings Figure 41 Liebert NX 40-120kVA UPS to 33" 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.
Installation Drawings Figure 42 Outline drawing, Liebert NX 480V 33" parallel cabinet (33.2) (38) 2000 (78.7) Front 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 degrees of vertical while handling.
Installation Drawings Figure 43 Outline drawing, Liebert NX 480V 49" parallel cabinet 1240 (48.8) (38) 2000 (78.7) Front 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 degrees of vertical while handling.
Installation Drawings Figure 44 Liebert NX 480V paralleling cabinet with input and bypass circuit breakers, main components System Input System Output Tie Breaker UPS Output Breaker Input Breakers Kirk - Key Fuse Ground Disconnect Busbar System Bypass Tie Breaker System...
Installation Drawings Figure 45 Liebert NX 480V paralleling cabinet main components—input, bypass and distribution circuit breaker configuration System Input UPS Input Ground Bypass Breaker Front Front Output With Covers Without Covers Distribution Bypass Breaker Rear Output Rear Without Covers With Covers ®...
Installation Drawings Figure 47 Liebert NX 480V 40-120kVA UPS to Paralleling Cabinet Interconnection—Configuration BB0, FB0, KB0 parallel connection to Liebert NX G1-G4 H1-H4 B1-B4 G1-G4 H1-H4 FRONT Without Covers C1-C4 B1-B4 FRONT E1-E4 Door Open C1-C4 E1-E4 From Conductors Ph A, B, C - System...
Installation Drawings Figure 48 Interconnecting details for Liebert NX 40-120kVA UPS to paralleling cabinet with input, bypass and distribution circuit breakers G1-G4, H1-H4 B1-B4 E1-E4, F G1-G4, H1-H4 FRONT Without Covers C1-C4 B1-B4 E1-E4 FRONT With Door Open C1-C4 REAR...
Installation Drawings Figure 49 Lineup detail—Configuration CB2, CB3, CB4 parallel connection to Liebert NX G1-G4 H1-H4 C1-C4 E1-E4 G1-G4 H1-H4 C1-C4 FRONT B1-B4 E1-E4 Without Covers FRONT Door Open From Conductors UPS #1-UPS #4 Module AC B1-B4 Utility Ph A, B, C - UPS Inputs...
Installation Drawings Figure 50 Line-up detail, bolt together description, 40-120 kVA Liebert NX LEFT SIDE LEFT SIDE Without Exterior Panels Isometric View NOTES: (38 in.) 1. All dimensions are in millimeters (inches) 2. All cables should be routed before bolting cabinets together.
Liebert’s NX 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 frequency common to utility power, which is subject to brownouts, blackouts, surges and sags.
Normal mode, with the rectifier powering the critical load. Bypass Mode When the Liebert NX is in bypass mode, the load is directly supported by utility power and is without battery backup protection. The Liebert NX’s inverter static switch and bypass static switch will shift the load from the inverter...
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For maintenance or repair, the Liebert NX may be operated in maintenance mode. To place the Liebert 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.
ISPLAY ANEL 10.1 Operator Control Panel The control panel and LCD on the front of the Liebert NX lets 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 52 and detailed in Figure 53.
Status indicator HELP The current operational status of the Liebert NX is indicated by the color of the indicators—green, amber or red—and whether they are ON (solid), flashing or OFF. Table 27 provides a guide to interpreting the various states of the indicators.
Table 28. NOTE To activate a button properly, press and hold until you hear a short beep—about two seconds. Figure 55 Location of control buttons Button cover EPO button Liebert NX 2007-01-06 09:20:37 S ingle 80kV A-3X 3 Norm al...
• 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. Figure 56 Buzzer location Liebert NX 2007-01-06 09:20:37 80kV A-3X 3...
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 29). The keys are “soft keys”...
• Command - start or stop a battery maintenance test, battery capacity test or system test • Version - view firmware versions for the inverter, rectifier and software display board and the model information for the UPS Figure 58 shows a menu tree of the options available from the LCD menus. ® ™ Liebert...
TX Output L-L voltage (V) Line-line voltage Sout (kVA) Sout: Apparent power Pout (kW) Pout: Active power Load Qout (kVAR) Qout: Reactive power Loadlevel % The percent of the UPS rating load Crest factor Output current Crest Factor ® ™ Liebert...
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Callback times sets the number of times a number is redialed to send an alarm notification. When Liebert IntelliSlot 1 Communication mode is Modem, this is the first Phone No.1 phone number to be dialed (to send an alarm notification).
• Press the F4 (enter) key to accept the language selection. • Return to the main menu by repeatedly pressing F1 (ESC) as needed; all text on the LCD will now be displayed in the selected language. Figure 59 Language selection 2007-01-12 12:30:36 Liebert NX Single Normal 80KVA-3X3 Battery History...
Operator Control and Display Panel Figure 60 Set date and time 2007-01-12 12:30:36 Liebert NX Single Normal 80KVA-3X3 Command Language Setting LCD contrast Date format Y/M/D M/D/Y D/M/Y Y/M/D Date & Time 2007-01-12 12:30:36 Input disconnect closed 01-12 12:30 Output disconnect closed...
Operator Control and Display Panel 10.11 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 61. • Current Status Window: The status messages are displayed chronologically and include the date and time of the events.
10.12.2Default Screen After the UPS has powered up and completed a self-test, the output screen appears, as shown in Figure 63. This window is the default screen. Figure 63 Default screen 2007-01-12 12:30:36 Liebert NX Single Normal 80KVA-3X3 Main Bypass...
10.12.4Screen Saver Window If there has been no interaction with the Liebert NX LCD for 2 minutes, the screen saver window appears. It remains on the LCD for 2 minutes, then the screen will go dark. The LCD will become active again when any key is pressed.
The Liebert Battery will be depleted, NX asks for confirmation before the test is started, as shown at right. Confirm or cancel • To confirm the choice and begin the battery capacity test, press the F4 (Enter) key and the pop-up window disappears.
11.1 Liebert NX Operating Modes The Liebert NX can operate in any of four modes, as shown in Table 32. This section provides instructions on switching between modes, resetting the UPS, switching the inverter On and Off and performing other operations.
11.2 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. 11.2.1 Startup Procedure To start the UPS from a fully powered-down condition: 1.
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UPS will transfer from bypass to inverter, the bypass indicator will turn off and the inverter and load indicators will turn on. The UPS is operating normally. The UPS Mimic display indicators will: Indicator State Rectifier indicator Green Battery indicator Bypass indicator Inverter indicator Green Output indicator Green Status indicator Green ® ™ Liebert...
11.2.2 Verify Switching Between Operation Modes Switch from Normal Mode to Battery Mode • Open CB1 to enter battery mode. This breaks the utility connection to the Liebert NX. To return to normal mode, close CB1 after a few seconds. The rectifier will restart automatically after 10 seconds and resume feeding power to the inverter.
4. Press the EPO (Emergency Power Off) button at the UPS front panel of this UPS module only. This will disable further Rectifier, Inverter, Static Switch and Battery operation. This will not affect the manual maintenance bypass power switch. If a Liebert NX battery cabinet is connected, the battery circuit breaker will shunt trip open.
Risk of electrical shock and arc flash. Can cause property damage, injury and death. Even with the UPS in maintenance bypass and Off, portions of the Liebert NX system are still energized. Service must be performed by properly trained and qualified personnel only.
Risk of improper operation. Can cause property damage from loss of power to connected load. Failure to close the MBB will interrupt power to the load. The load equipment is not protected from normal supply aberrations when the Liebert NX is operating in the maintenance bypass mode.
• after the “Auto Recovery after EOD Delay Time” expires (the default delay is 10 minutes) During the auto recovery delay, the Liebert NX will be charging its batteries to provide a safety margin for equipment shutdown if input power fails again.
11.10 Battery Protection 11.10.1Battery Undervoltage Pre-Warning Before the end of discharge, the Liebert NX displays a Low Battery pre-warning. After this pre- warning, 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.
Operating Instructions Figure 67 Typical parallel system block diagram with common input supply, with separate batteries and optional output / bypass distribution panel 480V, 3W System Input Liebert NX UPS (40-200 kVA) 480V, 3W Bypass Output LDB 1 Static User Supplied...
8. Check that no “Warning” message is displayed in the top right corner of the LCD and that the indicators have the status shown below. # LED LED Function Status Rectifier indicator Green Battery indicator Bypass indicator Inverter indicator Green Output indicator Green Alarm indicator The UPS is now operating in NORMAL mode. ® ™ Liebert...
The operations described in this section must be performed by authorized electricians or qualified technical personnel. If you have any difficulty, call 1-800-LIEBERT for assistance. Check the input and output wiring of each UPS module. Ensure that the phase rotation sequence of the main inputs and the bypass inputs and outputs of each UPS module are the same.
SNMP, IGMnet, Modbus or Jbus. Other cards provide dry contact signals for external signaling of operating status. The Liebert IntelliSlot communication ports may be installed or removed while the Liebert NX is operating.
(Reserved) IntelliSlot. 12.1.5 Configuring Baud Rates The default baud rate for Liebert IntelliSlot cards is 9600. To communicate with the Liebert OCWEB-LB, Modbus/Jbus or the adapters to permit using Liebert MultiLink, the baud rate must be set to 2400. To change the baud rate (refer to Table 33): 1.
AS/400 computers (additional cable required) and other relay contact monitoring systems. The relay card is rated for 24 VAC/DC at 1A and supported in any of the three Liebert IntelliSlot bays on the Liebert NX .Refer to the Liebert Intellislot Relay Card user manual, SL-23211, for pin and...
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. This card is supported in any of the three Liebert IntelliSlot bays on the Liebert NX ®...
To help calculate the total cable length required, refer to Table 36 for the distance from the floor to selected connection points inside the Liebert NX. Determine the cable length required to reach the Liebert NX, then add the appropriate length from the table and adequate slack for repair and maintenance.
The UPS can recover automatically. Check the environment and ventilation. Charger Fault The charger has a fault. Contact Liebert Services at 800-543-2378 for assistance. Control Power 1 has failed or has been lost. Contact Liebert Services at 800-543-2378 for Control Power 1 Fail assistance.
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Contact Liebert Services at 800-543-2378 for assistance. At least one of the cooling fans has failed. Contact Liebert Services at 800-543-2378 for Fan Fault assistance. 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.
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(if applicable). The current of inverter IGBT is over limit. If the fault will not reset, contact Liebert Services at Inverter Overcurrent 800-543-2378 for assistance.
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The LBS setting is active. The UPS is acting as an LBS master or slave in a dual bus LBS Active configuration. Battery ground fault from dry contact signal. Contact Liebert Services at 800-543-2378 for Battery ground fault assistance. Inverter turned On...
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The inverter firmware is not compatible with the rectifier firmware. Fan power fail Fan power has failed Keyboard has a fault. Check the cable between keyboard with U2 board. Contact Liebert Keyboard fault Services at 800-543-2378 for assistance. An invalid kVA has been configured in unit.Contact Liebert Services at 800-543-2378 for KVA Invalid assistance.
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+39 049 9719 111 Fax: +39 049 5841 257 While every precaution has been taken to ensure the accuracy and completeness of this literature, Liebert Corporation assumes no Asia responsibility and disclaims all liability for damages resulting from use of 29/F, The Orient Square Building this information or for any errors or omissions.
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