Liebert Nfinity User manual

POWER PROTECTION
Nfinity™ 3:1 Power System USER MANUAL
380/400/415V
50/60Hz
4to20kVA

i
Table of Contents
IMPORTANT SAFETY INSTRUCTIONS ......................................... 1
GLOSSARY OFSYMBOLS................................................. 2
Introduction................................................ 3
GENERAL DESCRIPTION .................................................. 4
SystemDescription................................................. 4
Features ............................................................. 4
StandardComponents.................................................. 4
Communications....................................................... 4
MODES OFOPERATION .................................................. 6
NormalMode ......................................................... 6
Back-UpMode......................................................... 6
AutoRestartMode..................................................... 6
RechargeMode........................................................6
BypassMode.......................................................... 6
MAJOR COMPONENTS ................................................... 7
UnitFrame....................................................... 7
UserInterfaceModule.............................................. 8
SystemControlModule ............................................. 8
PowerModule..................................................... 9
BatteryModule.................................................... 9
Installation................................................ 11
PREPARATION ........................................................ 12
Inspection....................................................... 12
Environment..................................................... 12
RequiredSetupEquipment......................................... 12
SitePreparation.................................................. 12
UNLOADING.......................................................... 13
UnloadingtheUPS................................................ 13
StationaryMounting .................................................. 14

ii
CABLE INSTALLATION .................................................. 15
WiringPreparation................................................ 15
RemovingtheCoverPlates.............................................15
ConfiguringtheBypassVoltage(TB2)(TransformerModelsOnly)............. 15
PowerCableInstallation........................................... 15
InputWiring(TB1)................................................ 16
OutputWiring(TB3)............................................... 16
Withouttransformer .................................................. 16
Withtransformer..................................................... 16
REPOSwitch..................................................... 17
COMMUNICATIONS ..................................................... 18
COMPorts....................................................... 18
COM1-RelayContacts................................................ 18
COM2-Serial ....................................................... 18
Intellislot™Ports ................................................. 18
OperatingInstructions...................................... 19
CONTROLS AND INDICATORS ............................................. 20
DisplayControls.................................................. 20
Buttons............................................................. 20
Fault/WarningandStatusLEDs ........................................ 20
NavigatingtheMenu.............................................. 22
OPERATING PROCEDURES ............................................... 23
Start-UpandInitialization.......................................... 23
ShuttingDowntheUPS............................................ 23
ManualTransfertoBypass......................................... 23
MAIN MENU.......................................................... 24
UPSStatusScreen................................................ 25
UPSConfigurationScreen-ReviewSettingsMenu...................... 26
UPSConfigurationScreen-ChangeSettingsMenu..................... 27
UPSConfigurationScreen-ServiceModeMenu........................ 31
DisplayDate/Time................................................ 31
EventLog ....................................................... 32
AlarmLog....................................................... 32
TransfertoBypass................................................ 32
ModuleReplacement............................................... 33
Tools............................................................ 34
Troubleshooting........................................... 35

iii
ALARM MESSAGES .................................................... 36
MODULE LED INDICATION ............................................... 39
MODULE REPLACEMENT ................................................ 40
RemovingModules................................................ 40
ReplacingModules................................................ 41
ReplacingtheUserInterface........................................ 41
Maintenance .............................................. 43
MAINTENANCE........................................................ 44
ProperCare...................................................... 44
ScheduledMaintenance............................................ 44
ReplacingFanFilters.............................................. 44
Reference................................................. 45
SPECIFICATIONS ...................................................... 46
APPROXIMATE BATTERY RUN TIMES ....................................... 47
12BayFrame,InternalandExternal(minutes) ........................ 47

iv

1
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
This manual contains important instructions that
should be closely followed during installation and
maintenance of this UPS unit and during the
installation and replacement of power, control and
battery modules.
This product is designed for Commercial /
Industrial use only. This product is not intended for
use with life support and other designated “critical”
devices. Maximum load must not exceed that
shown on the UPS rating label.
Observe the following precautions when working
with batteries:
•CAUTION:DO NOT dispose of
battery modules in a fire; the battery
module may explode.
•CAUTION:DO NOT open or
mutilate batteries; released electrolyte is
harmful to skin and eyes, and may be toxic.
•CAUTION: A battery can present a
risk of electrical shock and high short
circuit current. The following precautions
should be observed when working on
batteries:
• Remove watches, rings or other metal
objects.
• Use tools with insulated handles.
•CAUTION: Lead-acid batteries
contain hazardous toxic materials. Handle,
transport, and recycle in accordance with
local regulations.
This UPS is designed for use on properly
grounded 380/400/415 VAC 50/60 Hz supply, for
installation by qualified personnel. This UPS is
intended to be installed by a qualified / certified
electrician who must review and approve customer
supplied wiring, circuit breakers, intended loads
and verify correct input, output and earth
connections to ensure compliance with technical
standards and local electrical codes of practice.
Installation instructions and warning notices, only
for use by qualified personnel, can be found in
Installation on page 10.
ELECTROMAGNETIC COMPATIBILITY—This
UPS complies with the requirements of the EMC
directive 89/336/EEC and the published technical
standards. Continued compliance requires
installation in accordance with these instructions
and use of manufacturer approved accessories
only.
Operate the UPS in an indoor environment only in
an ambient temperature range of 0°C to +40°C
(32°F to +104°F). Install it in a clean environment,
free from conductive contaminants, moisture,
flammable liquids, gases, or corrosive substances.
Turn the UPS off and isolate the UPS before
cleaning. Use only a soft cloth, never liquid or
aerosol cleaners. Keep the front and rear vents
free of dust accumulation that could restrict airflow.
Never block or insert any object into the ventilation
holes or other openings.
This UPS contains user replaceable modules. No
attempts should be made to access the interior of
any module. See Module Replacement on
page 39.
WARNING
Lethal voltages may be present within this unit
even when it is apparently not operating.
Observe all cautions and warnings in this
manual. Failure to do so MAY result in serious
injury or death. Never work alone.
WARNING
This UPS should not be supplied from electrical
power systems of the “IT” (Impedance à Terre)
type. (IEC 364 - ELECTRICAL INSTALLATION
OF BUILDINGS).

2
GLOSSARY OF SYMBOLS
Risk of electrical shock
Indicates caution followed by important instructions
AC input
AC output
Requests the user to consult the manual
Indicates the unit contains a valve-regulated lead acid
battery
Recycle
DC voltage
Equipment earthing conductor
Bonded to earth
AC voltage
OFF
ON
Standby
No telecommunication connection
Locked position
Unlocked position
Contact closure signals
Serial communications
i

3
Introduction
General Description
Modes Of Operation
Major Components

4
GENERAL DESCRIPTION
Congratulations on your purchase of Liebert’s
Nfinity™ Uninterruptible Power System (UPS). As
with every Liebert product, we stand behind our
quality. If you have any questions concerning this
UPS, please feel free to contact your local sales
representative, or call the appropriate technical
support number listed on the back of this manual.
To ensure proper installation and operation of this
unit, please read this manual thoroughly.
While installation must be completed by a
qualified/certified electrician, general operation
may be performed without special training.
System Description
The Liebert Nfinity Power System is a modular
UPS intended for use with workstations, servers,
network, telecom or other sensitive electronic
equipment. It provides continuous, high-quality AC
power to your equipment, protecting it from any
power disturbances due to blackouts, brownouts,
surges or noise interference.
The Nfinity modular UPS was designed to provide
maximum system availability to business critical
equipment. Nfinity is an easily adaptable UPS
system. By simply installing additional power or
battery modules you can expand your current
system capacity or extend your back-up runtime.
Nfinity has a comprehensive user interface that
can be configured according to the user’s
preference. It also informs the user of details on
the status of the UPS, and keeps a log of events.
Features
• Up to 20 kVA of modular back-up power
• Continuous power conditioning
• A user-friendly interface for custom
configuration
• Continuous system monitoring
• Warning alarms and event logs
• Internal automatic & manual bypass
• Output transformer for isolation (optional)
Standard Components
• Power Modules - for power conditioning
• Battery Modules - for back-up power
• System Control Modules - for system
monitoring and communications
• LCD for comprehensive user indications and
programmable controls
Communications
•Drycontacts
•RS-232
• Optional communications via Intellislot™
communication ports

5
ESC
!
COM1 COM2
Port1 Port2 Port3 Port4
User Interface Control Enable
Switch (SW2)
Power
Module
Bays
Battery
Module
Bays
Manual
Bypass
Switch
(SW1)
Intake
Cooling
Fans
(Transformer
Option Only)
DB-9
Communicatio
n
Ports
Output Power
Terminal
Input Power
Terminal
ExternalBatter
y
Connection
REPO
Terminal Intellislot™ Communications Ports
220/240 Jump
er
(Transformer
Option Only)
Input Earth
Terminal
Input Circuit
Breaker (CB1)
Back
with access plates removed
Front
with bezels removed

6
MODES OF OPERATION
The Nfinity UPS is designed to operate as a true on-line system in the following modes:
Normal Mode
The Power Module’spower factor correction circuitry
derives power from the AC Mains and supplies
regulated DC power to the inverter. The module’s
inverter regenerates precise AC power to supply the
connected equipment. The battery chargermaintains
a float-charge on the battery.
Back-Up Mode
When AC Mains fails, the connected equipment is
supplied power by the inverter, which obtains
energy from the battery modules. The connected
load will not be interrupted during the failure or
restoration of the AC Mains source.
Auto Restart Mode
After a power outage and complete battery
discharge, once the AC Mains is restored, the
UPS will automatically restart and resume
supplying power to the connected equipment. This
feature is enabled at the factory, but can be
disabled by the user. The user can also program
two auto restart delay settings:
1. Battery capacity level (%)
2. Countdown timer
Recharge Mode
When AC Mains is restored, the unit will then
automatically recharge the battery modules until
they are fully charged.
Bypass Mode
The bypass provides an alternate path for power to
the connected equipment and operates in the
following manner:
•Automatic
In the event of an internal fault or should the
inverter overload capacity be exceeded, the
UPS performs an automatic transfer of the
connected equipment from the inverter to the
bypass source.
•Manual
Should the UPS need to be taken out of
service for limited maintenance or repair,
manual activation of the bypass will cause an
immediate transfer of the equipment from the
inverter to the bypass source.
220V - standard
230/240V - optional
MANUAL
BYPASS
POWER
CONTROL
EMI
Filter POWER MODULE(S) EMI Filter OUTPUT &
BYPASS
CONTACTOR
SYSTEM
CONTROL
MODULE
SYSTEM
CONTROL
MODULE
CONTROL
INTERFACE
USER
INTERFACE
BATTERY
MODULE(S)
COMMUNICATIONS
OUTPUT
TRANSFORMER
INPUT OUTPUT

7
MAJOR COMPONENTS
The following is a general description of each
component and its functions. Please review this
section carefully, as it will give you a better
understanding as to how Nfinity operates.
Unit Frame
Nfinity’s frame houses all of the other system
components. Looking at the front of Nfinity,onewill
see a series of plastic bezels. By grasping these
bezels from the side and pulling out, you will
remove the bezel to reveal the Battery / Power
Module bays. The bottom bezel covers the cooling
fans and the Manual Bypass Switch.
The User Interface Module is located above the
Power / Battery Module bays for easy access.
From here the user may find out various
information about Nfinity’s condition. By moving
the User Interface and setting it on top of the
frame, you will see the System Control Module
bays.
Nfinity’s frame with bezels removed
(Power Module and Battery Module extended for illustration
only. Extending more than one module at a time could cause
the unit to tip over).
ESC
!

8
User Interface Module
The User Interface Module is the primary source of
communication between the UPS and the user.
From the interface, the user can:
• View the status of the UPS
• Custom configure the system
• Review the event log to assist with
troubleshooting
• Enable / disable the output power
• Silence the audible alarm
For a more detailed explanation on how to operate
the User Interface module, see Controls And
Indicators on page 19.
User Interface Module
System Control Module
The System Control Module is the communicative
backbone of the UPS. It gathers input from all
modules and processes the data to control the
operation of the system — including monitoring the
condition of each module. An optional second
System Control Module can be installed to provide
full system redundancy (operation and
communication), in the unlikely event a Control
Module should fail.
Under normal operation, the Status LED (green)
will blink and the Fault LED (amber) will be off. For
any condition other than this, check
Troubleshooting on page 34.
System Control Module
Lever
Fault LED
Status LED
Fasteners

9
Power Module
The Power Module maintains the condition of
power in the Nfinity UPS. Each module is an
independent 4 kVA unit, consisting of a rectifier,
battery charger, and inverter, with associated
monitoring and control-circuitry. The modules are
paralleled to provide greater capacity and/or
redundancy. Modules may be added or replaced
on-line with no interruption or danger to the
connected equipment.
Battery Module
The Battery Modules provide back-up power in the
event of input AC Mains failure. Each module
contains a quantity of ten individual 12-volt valve
regulated (VRLA) battery blocks with associated
monitoring and controls to isolate the battery
module in the event of a battery failure. The
modules are paralleled to provide greater back-up
time and/or redundancy. Modules may be added
or replaced on-line with no interruption or danger
to the connected equipment.
Under normal operation, the Status LED (green) will blink and the Fault LED (amber) will be off. For any
condition other than this, check the Troubleshooting section in this manual.
Power Module Battery Module
Lever
Cooling Fan
Fault LED
Status LED
Fastener
Shipping screws
FRONTFRONT

10

11
Installation
Preparation
Unloading
Cable Installation
Communications

12
PREPARATION
These installation instructions provide all the
information needed for positioning the UPS
(including environmental requirements) and for
connecting the input and output power cables.
Inspection
Upon receiving the UPS, examine the packaging
for any signs of mishandling or damage. If any
damage is noted, call your local Liebert
representative and/or notify your carrier.
Environment
Operating in temperatures above 25°C (77°F) will
reduce battery life. The UPS environment must be
free of conductive contaminants and excessive
moisture (water condensation, flammable vapors,
chemical fumes, or corrosive gasses and liquids).
Required Setup
Equipment
The tools below are required to properly set up
your UPS:
•palletjack
• 13mm (1/2in) spanner
• torque wrench (Nm)
• flathead screwdriver
• #2 Phillips screwdriver
Site Preparation
When deciding where to locate your UPS,
consider the weight and size of the unit. Make sure
that the structural integrity of the floor can
withstand the weight of a fully loaded unit. Refer to
the table below for size and fully populated weight
considerations:
Check to make sure that your UPS will be located
in a well-ventilated area with at least 300 mm
(12 in) behind it. The UPS is force cooled with the
aid of internal cooling fans. Cooling air enters from
the front of the UPS and is exhausted through
ventilation grilles in the back. It should also have at
least 1 metre (39in) in front in order to change
modules if necessary.
The unit frame is bolted to the shipping pallet to
ensure safety. It is recommended that a pallet jack
be used to transport the unit to its operating
location (prior to unbolting the unit).
Model Max Weight
kg (lb) HxWxD mm (in)
12 bay with
transformer 539 (1188) 1346x508x711 (53x20x28)
12 bay without
transformer 459 (1011) 1346x508x711 (53x20x28)
1metre
(39 in)
300 mm
(12 in)

13
UNLOADING
Unloading the UPS
CAUTION: This UPS is very heavy (see
weight in Site Preparation on page 11). At least
two people should be present to unload it from the
pallet.
1. Once the UPS is near the desired operating
location, remove the cardboard cover.
2. Use a 13mm (1/2in) spanner to remove the
four mounting bolts from the pallet brackets.
Remove mounting brackets from the pallet
and UPS. Keep brackets for future
transportation of UPS, or for additional stability
onceinplace.
3. Remove the metal ramp from the bottom of the
UPS, rotating it. Fit ramp in pallet slot as
shown above.
ESC
!

14
4. Using two people, slowly move the UPS down
the ramp until the UPS is on level ground.
5. Once the UPS is in its desired location, adjust
the leveling feet to secure its position.
Stationary Mounting
Additional stability can be added by bolting the
mounting brackets (used in shipping) to the floor.
For greater stability, use a higher-grade bolt. Refer
to the dimensions below when drilling holes for
stationary mounting.
13mm
(1/2in)
7
11 mm
(28")
7.94 mm (5/16")
diameter
6places
Optional Stationary Mounting
Centre Line
120 mm
(4.75")
120 mm
(4.75")