Liebert Nfinity User Manual

POWER AVAILABILITY

Nfinity

™ Power System

USER MANUAL

208/240V

60Hz

4 to 16 kVA

TABLE OF CONTENTS

IMPORTANT SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

GLOSSARY OF SYMBOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

1.0 I

NTRODUCTION

1.1 General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.1.1 System Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.2 Modes of Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.3 Major Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.3.1 Unit Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.3.2 User Interface Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.3.3 System Control Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.3.4 Power Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.3.5 Battery Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.0 INSTALLATION

2.1 Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.1.1 Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.1.2 Required Setup Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.1.3 Site Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.2 Unloading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.2.1 Unloading the UPS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.2.2 Stationary Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.3 Cable Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.3.1 Wiring Preparation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.3.2 Connecting to External Panel Boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Input Cabling and Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Output Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.3.3 REPO Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.4 Communications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.4.1 COM Ports. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.4.2 Intellislot™ Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

3.0 OPERATING INSTRUCTIONS

3.1 Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.1.1 Display Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.2 Status LED Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

3.3 Navigating the Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

3.4 Operating Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

3.4.1 Start-Up and Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

3.4.2 Shutting Down the UPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

3.4.3 Manual Transfer to Bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

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3.5 Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3.5.1 UPS Status Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

3.5.2 UPS Configuration Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

3.5.3 Display Date/Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

3.5.4 Event Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

3.5.5 Active Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

3.5.6 Transfer to Bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

3.5.7 Module Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

3.5.8 Service Tools for Liebert Global Services Engineers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

4.0 TROUBLESHOOTING

4.1 Active Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

4.2 Module LED Indication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

4.3 Module Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

4.3.1 Removing Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

4.3.2 Adding or Replacing Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

4.3.3 Replacing the User Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

5.0 MAINTENANCE

5.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

5.1.1 Proper Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

5.1.2 Scheduled Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

5.1.3 Replacing Fan Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

6.0 SPECIFICATIONS

6.1 Product Warranty Registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

FIGURES

Figure 1 Front and back views (12 bay model shown) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Figure 2 REPO switch connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

TABLES

Table 1 Nfinity weight and dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Table 2 Guide to LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

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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 and Battery
Modules.

This product is designed for Commercial/Industrial use only. This product is not intended for use
with life support and other U.S. FDA-designated “critical” devices. Maximum load must not exceed
that shown on the UPS rating label.

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.

Observe the following precautions when working with batteries:

CAUTION

!

DO NOT dispose of Battery Modules in a fire because the modules may explode.

DO NOT open or mutilate batteries; released electrolyte is harmful to skin and eyes and may
be toxic.

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 and other metal objects.

• Use tools with insulated handles.

Lead-acid batteries contain hazardous toxic materials. Handle, transport and recycle in
accordance with local regulations.

This UPS is designed for use on a properly grounded (earthed), 208/240 VAC, 60 Hz supply and is to
be installed by qualified personnel.

Electromagnetic Compatibility—The Nfinity™ UPS complies with the limits for a Class A digital
device, pursuant to Part 15 of FCC rules. These limits provide reasonable protection against harmful
interference in a commercial environment. This device generates, uses and radiates radio frequency
energy and, if not installed and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operating this device in a residential area is likely to cause
harmful interference which users must correct at their own expense.

Operate the UPS in an indoor environment only in an ambient temperature range of 32°F to +104°F
(0°C to +40°C). Install it in a clean environment, free from conductive contaminates, moisture, flam­mable liquids, gases and 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 4.3 - Module Replacement.

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GLOSSARY OF SYMBOLS

Risk of electrical shock

Indicates caution followed by important instructions

AC input

AC output

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Requests the user to consult the manual

Indicates the unit contains a valve-regulated lead acid
battery

Recycle

DC voltage

Equipment grounding conductor

Bonded to ground

AC voltage

OFF

ON

Standby

No telecommunication connection

Locked position

Unlocked position

Contact closure signals

Serial communications

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1.0 INTRODUCTION

1.1 General Description

Congratulations on your purchase of Liebert’s Nfinity™ Uninterruptible Power System. As with
every other Liebert product, we stand behind our quality. If you have any questions concerning this
UPS, please feel free to contact your local dealer or Liebert 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.

For details on product warranty and registration, see 6.1 - Product Warranty Registration.

1.1.1 System Description

The Liebert Nfinity Power System is a modular UPS available in 8 & 12 bay frames. It is intended for
use with workstations, servers, network, telecom and other sensitive electronic equipment. It pro­vides continuous, high-quality AC power to your equipment, protecting it from any power disturbance
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 also an easily adaptable UPS system. By simply installing additional Power or
Battery Modules, you can expand your current system capacity or extend your backup runtime.

Nfinity has a comprehensive user interface that enables configuration 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.

Introduction

Features

• Up to 16 kVA of modular backup power

• Continuous power conditioning

• A user-friendly interface for custom configuration

• Continuous system monitoring

• Warning alarms and event logs

• Internal automatic & manual bypass

Standard Components

• Power Modules - for power conditioning

• Battery Modules - for backup power

• System Control Modules - for system monitoring and communications

• LCD Display - for comprehensive user indications and programmable controls

• Output Transformer - for isolation

• REPO Switch Connection

Communications

• Dry contacts

• RS-232

• Optional communications via Intellislot™ communication ports

3

Figure 1 Front and back views (12 bay model shown)

Introduction

Power
Module
Bays

Battery
Module
Bays

User Interface

!

Control
Switch (SW2)

ESC

REPO
Connection

Intellislot™
Communications Ports

DB-9
Communication
Ports

Output Power
Terminal

Manual
Bypass
Switch
(SW1)

Intake
Cooling Fans

FRONT VIEW

with bezels

removed

BACK VIEW
with access

plates removed

Refer to the table below for size and fully populated weight considerations.

Table 1 Nfinity weight and dimensions

Model Max Weight - lb (kg) W x D x H - in. (mm)

8 bay 855 (388) 20 x 28 x 40 (508 x 711 x 1016)

12 bay 1176 (534) 20 x 28 x 53 (508 x 711 x 1346)

208/240 Jumper

Input Power
Terminal

Input Earth
Terminal

Input Circuit
Breaker (CB1)

External Battery
Connection

4

1.2 Modes of Operation

Introduction

EMI

FILTER

Normal Mode

USER

INTERFACE

POWER

MODULE(S)

BATTERY

MODULE(S)

COMMUNICATIONS

CONTROL

INTERFACE

MANUAL

BYPASS

OUTPUT &

BYPASS

CONTACTOR

SYSTEM

CONTROL

MODULE(S)

OUTPUTINPUT

OUTPUT

TRANSFORMER

POWER
CONTROL

The Power Module rectifiers derive power from a utility AC source and supply regulated DC power to
the inverter. The module’s inverter regenerates precise AC power to supply the connected equipment.
The battery charger is in the Power Module and maintains a float-charge on the batteries.

Backup Mode

When AC utility fails, the connected equipment is supplied power by the inverter, which obtains
energy from the Battery Modules. The output power equipment will not be interrupted during the
failure or restoration of the AC utility source.

Auto Restart Mode

After a power outage and complete battery discharge, and once AC utility is restored, the UPS will
automatically restart and resume supplying power to 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

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.

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Introduction

1.3 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 the Nfinity operates.

1.3.1 Unit Frame

The front of the Nfinity consists of a series of plastic
bezels. By grasping these bezels from the left and
right sides and pulling straight out, you can remove
the bezel to reveal the Battery / Power Module bays.
The bottom bezel covers the internal cooling fans and
the manual bypass switch.

The User Interface Module is located above the
Power / Battery Module bays for easy access. By mov­ing the User Interface and setting it on top of the
frame, you will see the system control module bays.

NOTE

In the figure at right, the Power Module and
Battery Module are extended for illustration
purposes only. Extending more than one
module at a time could cause the unit to be
top-heavy and/or tip.

Nfinity’s frame
with bezels removed

1.3.2 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

• Manually transfer the unit to bypass

For a more detailed explanation on how to operate the
User Interface Module, see 3.1 - Controls and Indi-
cators.

1.3.3 System Control Module

The System Control Module is the communications
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 redundant System Control
Module can be installed to provide full system func­tionality (operation and communication).

User Interface Module

System Control Module

Fasteners

Under normal operation, the Status LED (green) will
blink and the Fault LED (yellow) will be off. For any
condition other than this, check 4.0 - Troubleshoot-
ing.

6

Fault LED

Status LED

Lever

1.3.4 Power Module

Each power module is an independent 4 kVA, 2.8kW unit, consisting of a power factor corrected 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.

1.3.5 Battery Module

Each battery module contains 10 individual 12-volt, 9 amp hour, 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 capacity, backup time and/or redundancy. Mod­ules may be added or replaced on-line with no interruption or danger to the connected equipment,
provided that the UPS is not operating on battery.

Introduction

Power Module Battery Module

Shipping screws

Fastener

Green Status LED
Yellow Fault LED

Cooling Fan

Lever

FRONTFRONT

Under normal operation, the Green Status LED will blink continuously and the Yellow Fault LED
will be off. For any condition other than this, check 4.0 - Troubleshooting.

NOTE

Nfinity is shipped with each battery module secured to the frame by two shipping screws. These
screws should be removed prior to start-up.

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2.0 INSTALLATION

2.1 Inspection

Upon receiving the UPS, examine the packaging for any signs of mishandling or damage. If any dam­age is noted, call your local dealer or Liebert representative and/or notify your carrier.

2.1.1 Environment

NOTE

Operating in temperatures above 77°F (25°C) will reduce battery life. The UPS environment
must be free of conductive contaminants and excessive moisture (water and condensation),
flammable vapors, chemical fumes, corrosive gases and liquids.

2.1.2 Required Setup Equipment

The tools below are required to properly set up your UPS:

• Pallet jack

• 1/2" (13mm) ratchet or wrench

• Torque wrench (in-lb)

• Flathead screwdriver

• #2 Phillips screwdriver

Installation

2.1.3 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.

Check to make sure that your UPS will be
located in a well-ventilated area with at least
12 inches (305mm) behind it. The UPS is
air-cooled utilizing internal fans. Air is drawn
into the front of the UPS and is exhausted
through ventilation grilles in the back. It should
also have at least 36 inches (915mm) in front in
order to change modules when 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).

12"
(305mm)

36"
(915 mm)

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2.2 Unloading

2.2.1 Unloading the UPS

Installation

CAUTION

!

This UPS is very heavy (see weight in
Table 1). At least two people should
assist in unloading it from the pallet.

2. Remove the metal ramp from the bottom of
the UPS.

Pull ramp out from
under front of unit,
then turn ramp over

3. Fit the ramp flange in the slot in the rear
of the pallet (back of unit) as shown below.

1. Use a ratchet or wrench, 1/2" (13mm), to
remove the four mounting bolts from the
front and rear pallet brackets. Remove the
mounting brackets from the pallet and
UPS. Keep the brackets for future
transportation of the UPS or for additional
stability of the UPS once in place.

Fit ramp in
rear of pallet

4. Using two people, slowly move the UPS
down the ramp until the UPS is on a level
surface.

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5. Once the UPS is in the desired location, adjust the leveling feet to secure its position.

2.2.2 Stationary Mounting

Additional stability can be added by bolting the mounting brackets (used in shipping) to the floor, as
shown below left.

Installation

1/2" (13mm)

Shipping Brackets Used
for Stationary Mounting

28"

(711mm)

Optional Stationary
Mounting Dimensions

4.75"

(120mm)

4.75"

(120mm)

Center Line

5/16" (7.94mm)
diameter - in six
places

For greater stability, use a higher-grade bolt. Refer to the dimensions above right when drilling holes
for stationary mounting.

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