Emerson Nfinity 240V, Liebert Nfinity 16kVA, Liebert Nfinity 12kVA, Liebert Nfinity 20kVA User Manual

POWER AVAILABILITY

Nfinity

™ Power System

USER MANUAL

208/240V

60Hz

12 to 20 kVA

i

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

ii

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

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

TABLES

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

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

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 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.

Observe the following precautions when working with batteries:

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.

!

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.

!

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.

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 grounding conductor

Bonded to ground

AC voltage

OFF

ON

Standby

No telecommunication connection

Locked position

Unlocked position

Contact closure signals

Serial communications

i

Introduction

3

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 12 to 20 kVA Power System is a modular UPS available in a 12 bay frame. 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.

Features

• Up to 20 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

Introduction

4

Figure 1 Front and back views

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)

12 bay 1127 (512) 20 x 28 x 53 (508 x 711 x 1346)

ESC

!

User Interface

Control
Switch (SW2)

Power
Module
Bays

Battery
Module
Bays

Manual
Bypass
Switch
(SW1)

Intake
Cooling Fans

DB-9
Communication
Ports

Output Power
Terminal

Input Power
Terminal

External Battery
Connection

REPO
Connection

Intellislot™
Communications Ports

208/240 Jumper

Input Earth
Terminal

BACK VIEW
with access

plates removed

FRONT VIEW

with bezels

removed

Introduction

5

1.2 Modes of Operation

Normal Mode

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.

OUTPUTINPUT

MANUAL

BYPASS

POWER
CONTROL

EMI

FILTER

POWER

MODULE(S)

OUTPUT &

BYPASS

CONTACTOR

SYSTEM

CONTROL

MODULE(S)

CONTROL

INTERFACE

USER

INTERFACE

BATTERY

MODULE(S)

COMMUNICATIONS

OUTPUT

TRANSFORMER

Introduction

6

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.

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).

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.

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

User Interface Module

Fault LED

Status LED

Lever

Fasteners

System Control Module

Introduction

7

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.

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.

Power Module Battery Module

Shipping screws

FRONTFRONT

Fastener

Green Status LED
Yellow Fault LED

Cooling Fan

Lever

Installation

8

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

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

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).

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.

36"
(915 mm)

12"
(305mm)

Installation

9

2.2 Unloading

2.2.1 Unloading the UPS

!

CAUTION

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

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

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.

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

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

Fit ramp in
rear of pallet

Installation

10

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.

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

1/2" (13mm)

28"

(711mm)

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

Optional Stationary
Mounting Dimensions

Center Line

4.75"

(120mm)

4.75"

(120mm)

Shipping Brackets Used
for Stationary Mounting

Installation

11

2.3 Cable Installation

2.3.1 Wiring Preparation

Removing the Cover Plates

On the back
of the UPS,
cover plates
are over the
input and
output
terminals, as
shown at
right. Keep
screws and
plates to one
side.

Configuring the Bypass Voltage (TB2)

The UPS voltage is factory-set to 208 V.
Should the user have a utility supply of 240 V,
the bypass voltage jumper will have to be
changed to ensure correct output voltage.
After selection, retorque jumper screws to
28 in-lb.

Customer-Provided Overcurrent Protection

A branch rated overcurrent protection device (cir­cuit breaker or fused disconnect switch) must be
installed for the AC input.

If the start-up is on bypass, the UPS has a six­cycle inrush current that is up to 20 times the
rated output current. This must be taken into
account when selecting the overload protection
device at the AC input supply distribution point.
To avoid random tripping on start-up, it is recom­mended that the AC input supply be protected
with a circuit breaker capable of withstanding
this initial inrush.

This UPS is fitted with EMI suppression filters.
Earth leakage current is less than 40mA. Tran­sient and steady state earth leakage currents may
occur when starting the equipment. This should
be taken into account when selecting ground cur­rent detection devices, as the earth leakage cur­rents of both the UPS and load will be carried.

Input and output cables must be run in separate
conduits.

!

WARNING

Please read this section thoroughly
before attempting to install wiring to
this unit.

This UPS should be installed by a
qualified / certified electrician.

Remove Cover Plates

208 V

(default)

240 V

OR

Bypass Voltage Jumper

Installation

12

Input Wiring (TB1)

To connect the input wiring, follow these steps:

1. Locate the input wiring access, remove the knockout and
pull the three input wires through it, allowing some slack
for installation.

2. Secure the conduit to the rear panel of the UPS.

3. Input Power cables connect to screw terminals on the
Input Terminal Block located to the right of the Bypass
Voltage Terminal. Connect the wires to the block
connections as shown below. Using a torque wrench, turn
the screws clockwise until tightened to the proper torque
value (28 in-lb). Insert the ground wire through the
grounding lug and tighten it to the proper torque value
(120 in-lb).

Grounding Conductor Installation

An insulated grounding conductor must be identical or larger
in size, insulation material, and thickness as the grounded
and ungrounded branch circuit supply conductors. This cable
must be green with or without one or more yellow stripes and
is to be installed as part of the branch circuit that supplies
the unit or system.

The grounding conductor is to be grounded to earth at the
service equipment or, if supplied by a separately derived sys­tem, at the supply transformer or generator set.

Output Wiring (TB3)

Output wiring may be configured one of two different
ways (240/120 or 208/120). Refer to the chart below
and the diagram at right when configuring the out­put wiring.

Voltage 120 208 240

Between terminals 1 & 4

3 & 4

2 & 3 1 & 3

Use only the connections listed above. Other connections will
produce nonstandard voltages.

NOTE

The Nfinity UPS contains an isolation
transformer that generates a neutral
conductor for the connected equipment.
The UPS is a separately derived source
and contains a neutral to ground bonding
jumper. A grounding electrode conductor
(GEC) must be installed in accordance
with national and local wiring codes and
regulations.

TB1

L1

L2

2

1

Note the Neutral / Earth
jumper on the terminal
above

Installation

13

2.3.2 Connecting to External Panel Boards

The following instructions are also shipped attached to the rear of the unit.

INPUT CABLING AND PROTECTION

Table Below Applies to 12- 20 kVA Scalable Systems:

Stand-alone UPS or
UPS equipped with a Maintenance Bypass Cabinet (Without Transformer)

UPS With Maintenance Bypass Cabinet (With Transformer)

Single Input Feed: All UPS ratings must use 125A input circuit breaker protection.
Dual Input Feed: See table below.

Bypass Voltage Jumper Position (TB2)

Max. System

Load Rating

Input Voltage – 208VAC Input Voltage – 240VAC

Max. Current
in UPS mode

Recommended

Input Protection

Circuit Breaker

Max. Current
in UPS mode

Recommended

Input Protection

Circuit Breaker

12kVA

53 amps 75 amps 46 amps 75 amps

16kVA

70 amps 100 amps 62 amps 100 amps

20kVA

102 amps 125 amps* 88 amps 125 amps*

Terminal

Block

Details

Maximum: 35mm2 (2AWG) * Must use 90° copper wire

Minimum: 16mm

2

(6AWG)

Torque Rating: 2.5-3.0 Nm (22-26 in/lbs)

Max. System

Load Rating

UPS Feed Bypass Feed

Input Voltage – 208VAC Input Voltage – 240VAC 208V or 240V

Max. Current
in UPS mode

Recommended

Input Protection

Circuit Breaker

Max. Current

in UPS mode

Recommended Input

Protection Circuit Breaker

Recommended

Input Protection

Circuit Breaker

12kVA

53 amps 75 amps 46 amps 75 amps 125 amps*

16kVA

70 amps 100 amps 62 amps 100 amps 125 amps*

20kVA

102 amps 125 amps* 88 amps 125 amps* 125 amps*

Terminal

Block

Details

Maximum: 35mm

2

(2AWG) * Must use 90° copper wire

Minimum: 16mm

2

(6AWG)

Torque Rating: 2.5-3.0 Nm (22-26 in/lbs)

Bypass Voltage Selection

208 VAC

(Factory Default)

240 VAC

(Field Change)

Jumper/link
on upper two
screws

Jumper/link
on lower two
screws

Installation

14

OUTPUT CABLING

UPS Output Terminal Block (TB3) Connection to External Panel Boards

208 VAC

If connected equipment operates at 208VAC only, use a single-phase panel board connected to the UPS as follows.

208 VAC and 120 VAC

If connected equipment is a combination of 208 VAC and 120 VAC, use a three-phase panel board connected to
the UPS as follows.

240VAC and / or 120 VAC

If connected equipment operates at 240VAC only or 120VAC only or is a combination of both, use a single-phase
panel board connected to the UPS as follows.

1

2

3

4

5

Setup 1 - 208 VAC

208

Grounding Electrode Conductor

(Field connection must be made)

L

L

GEC

Max output current = 96A

Connected Equipment

Ground

Connected Equipment

Ground

208

UPS Output TB3Panel Board Input

Grounding Electrode Conductor

(Field connection must be made)

1

2

3

4

5

L

L

GEC

G

1

2

3

4

5

Setup 2 - 120 VAC

120

N

208 VAC also
available
as shown
connected
in Setup 1

Grounding Electrode Conductor

(Field connection must be made)

Max output current = 83A
each 120 VAC circuit

L

L

GEC

120

Connected Equipment

Ground

Note: L2 to N
is 88 VAC

CAUTION: It is important for the installing

electrician to clearly identify the connections for
future reference. Refer to NEC 215-8 and 210-4(d).

208

120

UPS Output TB3Panel Board Input

120

1

2

3

4

5

L2

GEC

N

L1

L3

Grounding Electrode Conductor

(Field connection must be made)

G

1

2

3

4

5

Setup 3 - 240 VAC

240

120 VAC also
available as shown
connected in Setup 2

Grounding Electrode Conductor

(Field connection must be made)

Max output current = 83A

L

L

GEC

Connected Equipment

Ground

240

120

120

UPS Output TB3Panel Board Input

1

2

3

4

5

GEC

N

L

L

Grounding Electrode Conductor

(Field connection must be made)

G

Installation

15

2.3.3 REPO Connection

The Nfinity is equipped with a Remote Emergency Power Off (REPO) connection.

Figure 2 REPO switch connections

NOTE

A jumper is factory installed between pins 1 & 2 to disable the Control Switch (SW2).
This will prevent the unit from being started during installation. This jumper must
be removed in order to start the unit.

!

CAUTION

To maintain safety, Signal Edge Low Voltage (SELV) barriers, and electromagnetic
compatibility, signal cables should be segregated and run separately from power cables.

NOTE
Remove jumper before wiring.

If the installation does not
require connection to a REPO
system, the jumper must be
removed.

1234

Key to REPO switch connections

1. 24 V DC, 50mA

2. Sense

3. Sense

4. Ground

REPO connections

for normally open

switch system

REPO jumper

connected

as shipped

REPO connections

for normally closed

switch system (fail-safe)

Hanger for cable-tie
to strain relief REPO
wiring

REPO switch

on rear of unit

1234 1234

Installation

16

2.4 Communications

2.4.1 COM Ports

Nfinity is able to communicate through multiple communication
ports simultaneously. Use only Liebert-provided communication
cards. Connect only Signal Edge Low Voltage (SELV)/ Class 2 cir­cuits when connecting to any communication port.

There are two DB-9 COM ports available on the rear of the Nfinity.

COM1 - Relay Contacts

Relay contacts are available through a DB-9F communications connector. Contact closure provides
the following:

These contacts are rated 48 VDC, 1 amp maximum and are compatible with Liebert MultiLink™
software.

COM2 - Serial

Nfinity is able to communicate via Liebert proprietary protocol. This communication port can be used
for serial communication with Liebert MultiLink software. For more detailed information, please see
the MultiLink software documentation on the CD shipped with the Nfinity. The pin-out configuration
of the DB-9 connector is:

2.4.2 Intellislot™ Ports

The following communication cards may be used with Nfinity:

• Intellislot OpenComms Web Card—allows
the Nfinity to communicate intelligently with
your Ethernet network. The OpenComms Web
Card must be installed in port 1.

• Intellislot MultiPort4 cards—allows up to
four client computer systems to monitor the sta­tus of Nfinity simultaneously.

• Intellislot Relay Contacts cards—provides
contact closures for remote monitoring of alarm
conditions; On Battery, On Bypass, Low Battery,
Summary Alarm, UPS Fault and On UPS
signals.

Pin Assignment

1 Low Battery (normally open)

4 UPS shutdown in battery mode

(5-12 V DC for 1.5 sec)

5 Common

7 Low Battery (common)

8 On Battery (common)

9 On Battery (normally open)

Pin Assignment

2 Transmit Data

3 Receive Data

5 Common

54321

6789

Pin Assignment

Port 1 Port 2 Port 3 Port 4

COM 1 COM 2

Operating Instructions

17

3.0 OPERATING INSTRUCTIONS

3.1 Controls and Indicators

3.1.1 Display Controls

The User Interface Module informs you of the status of the UPS and lets you configure the UPS to
your own needs or preferences.

The module consists of a series of Status LEDs, an LCD display window (four lines of 20 characters
each), and buttons for navigation, as displayed below.

Buttons

Refer to the legend below to properly navigate the
Nfinity User Interface.

Fault/Warning and Status LEDs

Refer to the legend below to indicate occurrence
when an LED is lit.

LCD Display

Window

Standby Button

Alarm
Silence
Button

Fault/Warning LED

Status LEDs

Navigation Buttons

ESC

- Navigates cursor on display menus

- Returns to previous display screen

- Selects displayed information

- Enables / disables output power

- Mutes the audible alarm

Up

Down

Escape

Enter

Standby

Alarm
Silence

ESC

On Bypass - The Bypass is supplying the power.

Solid - A UPS fault condition has occurred.

Fault/Warning

AC Input - AC utility is available.

Inverter On - The inverter is supplying the power.

On Battery - Battery is supplying power to the inverter.

AC Output - Power is available to supply the load.

Flashing - A Warning has occurred. Consult event log.

Operating Instructions

18

3.2 Status LED Modes 3.3 Navigating the Menu

To review or change any settings on the UPS,
use the buttons on the User Interface shown
at left. Because some menus contain more
than four rows of information, you may see an
arrow on the display pointing up or down (as
shown below)—indicating to scroll using the

or buttons.

If you are scrolling through any of the Main
Menus, items will scroll one line at a time
with the menu heading on the top line:

Pressing

reveals:

Note the arrows on the screen indicate that
the user can scroll up or down to reveal more
information.

LED Off

UPS is Off or Initializing

UPS is On, Utility is Good
and Output is On

(Normal Operation)

UPS is On, Utility is Bad
and Output is On

(On Battery Operation)

UPS is On, Utility is Good
and Output is Off

UPS is On, Utility is Bad
and Output is Off

UPS is in Bypass Operation

(Manual or Automatic)

UPS is in Manual Bypass
Operation with Utility Out of
Bypass Operation Range

Shutdown Due to
End of Discharge

LED On

LED Flashing

UPS Status

Present Load
Redundant Status
Battery Status

UPS Status

Redundant Status
Battery Status
Volts/Amps/kVA

Operating Instructions

19

3.4 Operating Procedures

3.4.1 Start-Up and Initialization

Follow these steps to start up the UPS.

1. Ensure the manual bypass switch is in
UPS position. Close Input Circuit Breaker
(CB1) and close the Control Enable
Switch (SW2). You should see the
following on the LCD display window:

2. Press or button.

3. Press

to access the Main Menu.

3.4.2 Shutting Down the UPS

Use the following procedure to power down
the UPS.

1. Press to disable power from the
connected equipment.

2. Verify request to disable the output by
pressing .

3. Turn off the Enable Switch (SW2). Open
the Input Circuit Breaker (CB1).

3.4.3 Manual Transfer to Bypass

To manually transfer the UPS to bypass,
move the manual bypass switch to the bypass
position. The manual bypass switch is behind
the front bottom bezel. To transfer the UPS
from bypass to normal mode, follow the on­screen instructions.

Once is pressed, the bypass alarm will
annunciate and cannot be canceled until the
manual bypass switch is operated.

To transfer the UPS from bypass to normal
mode, simply operate the manual bypass
switch back to the UPS position.

On return from bypass, the following screen
will be displayed.

UPS Initializing

Please wait...

*Press to Enable
UPS Output.

ESC

On Mains/Utility
Output % = xx
Battery Minutes yyy
Press for menu

NOTE

The load is not protected from utility
interruptions when the UPS is in
bypass mode.

Main Menu

> Transfer to Bypass

Transfer to Bypass

Press for bypass
Press ESC to cancel

Assert manual bypass

Manual
Bypass
Switch

On UPS

On Bypass

UPS on manual bypass

No active alarms
See Event Log

Operating Instructions

20

3.5 Main Menu

After initialization, the button will take you to the Main Menu. From here you may check on the
status of the UPS, review the event log and active alarms, configure your UPS and even receive
instructions on replacing modules. The Main Menu is divided into eight sub-menus as shown below:

Use the

and buttons to select the desired menu item and press to access the appropriate

submenu.

Service Tools

Service Tools

UPS Test
Clear Failures
BM Cell Replacement
Reset Battery Stats
Reset Bypass Stats

Active Alarms

Active Alarms Message

UPS Configuration

UPS Configuration

Review Settings
Change Settings
Service Mode

Main Menu

> UPS Status

UPS Configuration
Display Date/Time
Event Log
Active Alarms
Transfer to Bypass
Module Replacement
Service Tools

UPS Status

UPS Status

Present Load
Redundant Status
Battery Status
Volts/Amps/kVA
UPS Frequency
Bypass Information
UPS Information
Module Information

Module Replacement

Module Replacement

Ctrl w/ Redundant
Ctrl w/o Redundant
Pwr w/ Redundant
Pwr w/o Redundant
Battery Module

Event Log

Event: xxx/xxx xx

event message
event message

DD/MMM/YYYY HH:MM:SS

Display Date/Time

Date/Time

xx/xx/xxxx xx:xx:xx
mm/dd/yyyy hh:mm:ss

Transfer to Bypass

Press for bypass
Press ESC to cancel

Operating Instructions

21

3.5.1 UPS Status Screen

From the Main Menu the user may select UPS Status and press . Once at the UPS Status Screen,
the user may access any information on the present condition of the UPS. Note the chart below when
reviewing the UPS.

Main Menu

> UPS Status

UPS Configuration
Display Date/Time
Event Log
Active Alarms
Transfer to Bypass
Module Replacement
Service Tools

UPS Status

UPS Status

Present Load
Redundant Status
Battery Status
Volts/Amps/kVA
UPS Frequency
Bypass Information
UPS Information
Module Information

Present Load

On Mains/Utility
Output: kVA xx.x
Output: kW xx.x
Output: pf xx.x

Redundant Status

Redundant Status
PMs Installed xx
PM:N+1 redundant/non-redundant
SC:Redundant/(non-redundant)

Battery Status

Battery Status
Voltage (VDC) xxx
Capacity % xxx
Status: charging
BMs Installed xx
Ext batt present: No
Discharge count: xxxx
Batt Usage Hr: xxxx.x

Module Information

Main Control
S/N: xxxxxxxxxxxxxxx
FW ver: xxxx

Redundant Control
S/N: xxxxxxxxxxxxxxx
FW ver: xxxx

User Interface
S/N: xxxxxxxxxxxxxxx
FW ver: xxxx

Power Module
S/N: xxxxxxxxxxxxxxx
FW ver: xxxx

Battery Module
S/N: xxxxxxxxxxxxxxx
FW ver: xxxx

Bays=x,XFMR=x
Defaults = xxxV/xxHz
Limit/Cnfg=xxxkVA/1x1
Model ID=x

UPS Status menu options

Volts/ Amps/k VA

Input Output
xxx VAC xxx VAC
xxx A xxx A
xx.x kVA xx.x kVA

UPS Frequency

UPS Frequency
Input Hz: xx.x
Output Hz: xx.x

Bypass Information

Bypass Reasons
Manual-User x
Overload x
Other x

UPS Information

UPS Information
UPS ID: xxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxx

Operating Instructions

22

3.5.2 UPS Configuration Screen

Review Settings

Follow this procedure to review your UPS configuration settings. Follow the menus below by pressing

and to review the settings.

Main Menu

UPS Status

> UPS Configuration

Display Date/Time
Event Log
Active Alarms
Transfer to Bypass
Module Replacement
Service Tools

UPS Configuration

UPS Configuration

> Review Settings

Change Settings
Service Mode

Review Settings

Voltage
Frequency
Battery
Alarm
Service Contact
Auto Restart
UPS Shutdown Delay
Remote Shutdown
External Battery
Bypass Alarm Mode
Intelli-Battery Ca.
Air Filter Reminder
Guarantee Shutdown

External Battery

External batt config
Amp.Hr 0000
Charge (A) 00.0

Bypass Alarm Mode

Bypass Alarm Mode
Mode: Enable

Intelli-Battery Ca.

Intelli-Batteries

0

Air Filter Reminder

Air Filter Reminder
Mode: 26 weeks

Guarantee Shutdown

Guarantee Shutdown
Mode: Enable/Disable

Voltag e

Voltage Settings

Input 208/120
Output 208

Frequency

Frequency Settings
Frequency Hz: 60
Sync Range Hz: +/- 5.0
Slew Range Hz/S: 3.0

Battery

Battery Settings
Test intrvl weeks: 2
on Wed 06:00
Low Batt Warn:2 min

Alarm

Alarm Settings
Redundant Alarm:

Enabled/Disabled

Max Load: Enabled/Disabled

Service Contact

Service Contact
Liebert Corp.

www.liebert.com

Auto Restart

Auto Restart
Mode: Disable
Batt % 0%
Delay 10

UPS Shutdown Delay

UPS Shutdown Delay
120 seconds

Remote Shutdown

Remote comm shutdown
Mode: Enable

Review Settings menu options

Operating Instructions

23

Change Configuration Settings - Change Settings Menu

Starting from the Main Menu, locate and press UPS Configuration. From the UPS Configuration
screen, select the Change Settings option. You may configure Nfinity from a large variety of selec­tions. Items indicated by an asterisk (*) are the selected settings.

Input Voltage: Select the required input voltage set­ting. This voltage must match the bypass voltage
jumper setting.

Display Voltage: Displays the actual voltage the
unit is configured for.

Frequency Sync Range: Sets the window to which
the system synchronizes to the input supply.

Frequency Slew Rate: Sets the rate of change of
frequency through the sync range window.

Set Password: Set a Password to prevent unautho­rized users from changing the configuration of the
Nfinity. It can be up to seven characters in length.
Once set, the password will be required to change the
configuration.

Main Menu

UPS Status

> UPS Configuration

Display Date/Time
Event Log
Active Alarms
Transfer to Bypass
Module Replacement
Service Tools

UPS Configuration

UPS Configuration

Review Settings

> Change Settings

Service Mode

Change Settings

Input Voltage
Display Voltage
Frequency Sync Range
Frequency Slew Rate
Set Password
Auto Battery Test
Low Battery Warning
Auto Restart
User Settings
Set Date/Time
Max Load Alarm Set
UPS Shutdown Delay
Redund Alarm Set
Service Contact
Remote Shutdown
External Battery
Bypass Alarm Mode
Intelli-Batt Ca.
Air Filter Reminder
Guarantee Shutdown
Line Compensation
Factory Defaults

Input Voltage

* 208/120

240/120

Display Voltage

208

* 240

Frequency Sync Range

0.5 Hz

1.0 Hz

2.0 Hz

3.0 Hz

4.0 Hz

* 5.0 Hz

NOTE

If the password is lost, call Liebert Technical
Support.

Frequency Slew Rate

0.5 Hz

1.0 Hz

2.0 Hz

3.0 Hz

4.0 Hz

* 5.0 Hz

Set Password

xxxxxxx

Operating Instructions

24

Auto Battery Test: Configure when and how often
the Nfinity’s automatic battery test will run. This test
is designed to ensure battery system integrity and
provide early warning of problems.

Low Battery Warning: Notifies user how much run
time is available. Can be set from 1 to 30 minutes.

Auto Restart: Automatically restarts once both
delay parameters (battery capacity percentage and
countdown timer) are met.

User Settings: You may adjust the contrast of the
user interface LCD or select the appropriate lan­guage.

Auto Battery Test

Interval
Start Day
Start Time

Interval

Batt Test Interval

1 week

* 2 weeks

3 weeks
4 weeks
6 weeks
Disabled

Start Day

Batt Test Weekday
SUN
MON
TUE
WED
THU
FRI
SAT

Start Time

Battery Test Time
06:00

Low Battery Warning
02 Minutes

Auto Restart

Mode
Auto restart batt %
Auto restart delay

Auto Restart Mode

Auto Restart Mode

* Enable

Disable

Auto Restart Batt %

Auto Restart Batt %

*0%

10%
25%
40%
60%
80%

Auto Restart Delay

Auto Restart Delay
in 10-second
increments,

x0 sec

User Settings

Screen Contrast
Display Language

Screen Contrast

Screen Contrast

Press to increase
Press to decrease

Display Language

Display Language

English
Francais
Italiano
Deutsch
Espanol

Operating Instructions

25

Set Date/Time: Allows user to enable/disable DST
(Daylight Saving Time), change the Day, Date and
Time setting on Nfinity. When enabled, the time will
automatically adjust to Daylight Saving Time.

Max Load Alarm Set: Allows an alarm to set when
Nfinity’s load reaches a specific level.

UPS Shutdown Delay: Delays UPS shutdown for
specified amount of time after receiving shutdown
command via relay contacts only.

Redundant Alarm Set: Sets Alarm to notify user
when redundancy is no longer available.

Service Contact: Set a contact for the user to reach
if problems occur.

Remote Shutdown: Enables / Disables the Remote
Communications Shutdown.

If you are using MultiLink™ software, this parameter
should be enabled in order for the UPS output to be
turned off once the operating system has been shut­down.

External Battery: Sets total amp-hour for external
batteries to provide a more accurate runtime remain­ing value on the LCD display and through communi­cations.

When using the Non-Modular External Battery
Cabinets with Chargers (P/N: PB10SLF105WC120),
enter the following:

Set Time/Date

DST Mode
Set Time/Date

DST Mode

DST Mode

Enabled

* Disabled

Set Date/Time

Date/Time

MM/DD/YYYY HH:MM:SS

Max Load Alarm Set

Mode
Threshold

Alarm Mode

Max Load Alarm Mode

* Enable

Disable

Threshold

Max Load Alarm Set
Threshold kVA = xx.x

UPS Shutdown Delay
xxx seconds

Redundant PWR Alarm Set

Enable

* Disable

# Cabinets AH Value Charge Current

1 0091 07.0

2 0182 14.0

3 0273 21.0

4 0364 28.0

5 0455 35.0

6 0546 42.0

Service Contact

>Company Name

Company Phone

Company Name

Company/Name

LIEBERT CORP.

Phone Number

Phone Number

WWW.LIEBERT.COM

Remote Shutdn

* Enable

Disable

External Battery

Amp-hour

> Charge Current

External Batt Config
Enter total amp-hour

0000

External Batt Config
Enter charge current

00.0

Operating Instructions

26

Bypass Alarm Mode: Allows the user to enable/dis­able alarm, indicating that the bypass is not quali­fied.

Intelli-Battery Ca.: Allows the user to enter the
quantity of intelligent battery cabinets installed.

Air Filter Reminder: Allows the user to set a warn­ing reminder to check the air filters.

Guarantee Shutdown: Allows the user to guarantee
a shutdown after a low battery warning is announced,
even if the utility becomes qualified.

Line Compensation: Allows the user to control the
amount of line drop compensation to be applied to the
nominal output voltage. Line drop compensation is
intended to compensate for any IR drop that may
occur when the UPS is a significant distance from the
protected load.

Factory Defaults: Allows the user to reset all set­tings to the values in effect when the UPS was
shipped from the factory.

Bypass Alarm Mode

> Enable

Disable

Enter Intelli­Battery cabinet
count

x

Air Filter Reminder

2 weeks
4 weeks
10 weeks
26 weeks
52 weeks

* Disable

Guarantee Shutdown

Enable

* Disable

Output Volt: x

Increase Decrease

ESC to cancel

to Accept & Exit

Load Factory Default
Are you sure?
Press for yes
Press ESC for no

Operating Instructions

27

UPS Configuration Screen - Service Mode Menu

Service Mode contains site identification information about the UPS system. The data is entered by
Liebert Global Services (LGS). To view the data, go to the Main Menu, select UPS Configuration and
press . Next, select Service Mode and press .

Set Site ID: Press to return to the Service Mode
menu. Scroll to Set Site ID and press to display
the screen shown below.

Set Tag Number: Press to return to the Service
Mode menu. Scroll to Set Tag Number and press
to display the screen shown below.

Set UPS ID: Press to return to the Service Mode
menu. Scroll to Set UPS ID and press to display
the screen shown below.

3.5.3 Display Date/Time

This feature shows the current date and time. At the Main Menu, select UPS Configuration and
press . Next, select Display Date/Time and press .

Main Menu

UPS Status

> UPS Configuration

Display Date/Time
Event Log
Active Alarms
Transfer to Bypass
Module Replacement
Service Tools

UPS Configuration

UPS Configuration

Review Settings
Change Settings

> Service Mode

Service Mode

Service Mode

> Set Site ID

Set Tag Number
Set UPS ID

ESC

Service Mode

Service Mode

> Set Site ID

Set Tag Number
Set UPS ID

Set Site ID

-

ESC

Service Mode

Service Mode

Set Site ID

> Set Tag Number

Set UPS ID

Set Tag Number

-

ESC

Service Mode

Service Mode

Set Site ID
Set Tag Number

> Set UPS ID

Set UPS ID

Main Menu

UPS Status
UPS Configuration

> Display Date/Time

Event Log
Active Alarms
Transfer to Bypass
Module Replacement
Service Tools

Display Date/Time

Date/Time

xx/xx/xxxx xx:xx:xx
mm/dd/yyyy hh:mm:ss

Operating Instructions

28

3.5.4 Event Log

Accessing the Event Log enables the user to
scroll through the Nfinity’s past 255 occur­rences. To open the Event Log, start at the
Main Menu, select Event Log and press .

Press the

and buttons to scroll through

the Nfinity’s Event Log in chronological order.
The Event Log contains the following infor­mation.

The typical event log screen will display the
event number and reference code on the first
line. The purpose of this code is to assist fac­tory trained service personnel in trouble­shooting. Please make a note of the code
number when contacting technical support.
The second line contains the event descrip­tion. The third line will have either more
detail about the event, a serial number indi­cating as to which module the event occurred,
or be left blank. The last line will show the
date and time the event occurred.

Press to go back to the Main Menu.

When an event or alarm occurs, the User
Interface LCD will display the last message
regardless of the default screen. See 4.1 -
Active Alarms for a list of events and alarms
and possible solutions. If you are unsure of
the corrective action to take, contact a Liebert
representative at the number listed on the
back of this manual.

3.5.5 Active Alarms

Alarms affecting the Nfinity can be viewed at
the Active Alarms screen. To access the
screen, go to the Main Menu, select Active
Alarms and press .

When an alarm sounds, the User Interface
LCD will display a general explanation as to
what the alarm is indicating. To view these
messages in chronological order, press the
and buttons.

• The first line of a typical Active Alarms
screen will display the reason for the
alarm occurrence.

• The second line will give a more specific
detail of the occurrence (i.e., module serial
number).

Press to go back to the Main Menu.

3.5.6 Transfer to Bypass

In the event of a UPS overload or failure, the
UPS will transfer to bypass via its automatic
bypass switch.

Main Menu

UPS Status
UPS Configuration
Display Date/Time

> Event Log

Active Alarms
Transfer to Bypass
Module Replacement
Service Tools

Event Log

Event: xxx/xxx xx

event message
event message

DD/MMM/YYYY HH:MM:SS

Event 031/255 NC09
Power module warning
S/N:0012200001002G1
19 MAY 2000 16:54:27

Event Detail or
Serial Number

Date of
Event

Time of
Event

Description

Event Number

Reference Code

ESC

Main Menu

UPS Status
UPS Configuration
Display Date/Time
Event Log

> Active Alarms

Transfer to Bypass
Module Replacement
Service Tools

Active Alarms

Active Alarms Message

ESC

Main Menu

UPS Status
UPS Configuration
Display Date/Time
Event Log
Active Alarms

> Transfer to Bypass

Module Replacement
Service Tools

Transfer to Bypass

Press for bypass
Press ESC to cancel

Operating Instructions

29

3.5.7 Module Replacement

The user interface also supplies instructions for removing and replacing modules. From the Main
Menu, access the module replacement screen and select the type of module. Refer to the screens
below:

For more details on module replacement, consult 4.0 - Troubleshooting.

Main Menu

UPS Status
UPS Configuration
Display Date/Time
Event Log
Active Alarms
Transfer to Bypass

> Module Replacement

Service Tools

Module Replacement

Module Replacement

> Ctrl w/ Redundant

Ctrl w/o Redundant
Pwr w/ Redundant
Pwr w/o Redundant
Battery Module

Control Module w/ Redundant

Cntl Mod Replacement

1. Lift off display
panel and place
on top of UPS

2. Locate amber LED

3. Open lever

4. Loosen fastener

5. Replace module

6. Tighten fastener

7. Close lever

8. Replace display

Control Module w/o Redundant

Cntl Mod Replacement

1. Remove bottom
bezel and place
UPS in bypass

2. Lift off display
panel and place
on top of UPS

3. Locate amber LED

4. Open lever

5. Loosen fastener

6. Replace module

7. Tighten fastener

8. Close lever

9. Wait for amber LED
to stop flashing.

10.Replace display

11.Switch bypass to
return to UPS
operation

12.Replace bezel

Power Module w/ Redundant

Pwr Mod Replacement

1. Remove all
front bezels

2. Locate amber LED

3. Open lever

4. Loosen fastener

5. Replace module

6. Tighten fastener

7. Close lever

8. Replace all bezels

Power Module w/o Redundant

Pwr Mod Replacement

1. Remove bottom
bezel and place
UPS in bypass

2. Remove remaining
front bezels

3. Locate amber LED

4. Open lever

5. Loosen fastener

6. Replace module

7. Tighten fastener

8. Close lever

9. Wait for amber LED
to stop flashing.

10.Switch bypass to
return to UPS
operation

11.Replace all bezels

Battery Module

Battery Module

1. Remove all
front bezels

2. Locate amber LED

3. Loosen fastener

4. Replace module

5. Tighten fastener

6. Replace all bezels

Module Replacement menu options

Operating Instructions

30

3.5.8 Service Tools for Liebert Global Services Engineers

The Service Tools option is intended for use by Liebert Global Services engineers or Liebert-trained
engineers to carry out certain tests and clear failures. These are advanced menus, entering changes
may adversely affect UPS operation. From the Main Menu, shown below left, select Service Tools and
press .

UPS Test: Allows a Liebert-trained engineer to test
the Batteries, LEDs or LCD.

Clear Failures: Allows a Liebert-trained engineer to
reset the UPS after a Battery Module failure alarm.

BM Cell Replacement: Allows a Liebert-trained
engineer to reset the battery module (BM) energy val­ues to defaults after replacing battery cells within the
module.

Reset Battery Stats: Allows a Liebert-trained engi­neer to reset all battery statistics. These statistics
include battery usage and discharge count.

Reset Bypass Stats: Allows a Liebert-trained engi­neer to reset all bypass statistics. These statistics
include manual bypass count, bypass overload count
and other bypass count.

Main Menu

UPS Status
UPS Configuration
Display Date/Time
Event Log
Active Alarms
Transfer to Bypass
Module Replacement

> Service Tools

Service Tools

Service Tools

> UPS Test

Clear Failures
BM Cell Replacement
Reset Battery Stats
Reset Bypass Stats

Service Tools

Service Tools

> UPS Test

Clear Failures
BM Cell Replacement
Reset Battery Stats
Reset Bypass Stats

UPS Test

LED
LCD
Battery

Service Tools

Service Tools

UPS Test

> Clear Failures

BM Cell Replacement
Reset Battery Stats
Reset Bypass Stats

Clear Failures

Clear batt failures

Clear batt failures

Press for Yes
Press ESC for No

Service Tools

Service Tools

UPS Test
Clear Failures

> BM Cell Replacement

Reset Battery Stats
Reset Bypass Stats

Reset All BM Energy
Settings to Default

Press for Yes
Press ESC for No

Service Tools

Service Tools

UPS Test
Clear Failures
BM Cell Replacement

> Reset Battery Stats

Reset Bypass Stats

Reset Battery Stats
Are you sure?

Press for Yes
Press ESC for No

Service Tools

Service Tools

UPS Test
Clear Failures
BM Cell Replacement
Reset Battery Stats

> Reset Bypass Stats

Reset Bypass Stats
Are you sure?

Press for Yes
Press ESC for No

Troubleshooting

31

4.0 TROUBLESHOOTING

4.1 Active Alarms

In the event of an alarm, the User Interface LCD will display the last message regardless of the
default screen. A list of possible alarm messages is displayed below. If you encounter one of these or
other alarm messages and are unsure of the corrective action to take, please contact a qualified Lie­bert representative at the number listed on the back of this manual.

User Interface Text Cause Action

Main Control Failure The Nfinity system has detected a

System Control Module failure.

Identify and replace the failed System Control Module or
contact Liebert Global Services for support.

Power Module Fail The Nfinity system has detected a Power

Module failure.

Identify and replace the failed Power Module or contact
Liebert Global Services for support.

Battery Module Fail The Nfinity system has detected a Battery

Module failure.

Identify and replace the failed Battery Module or contact
Liebert Global Services for support.

Redun. Control Fail The Nfinity system has detected a

System Control Module failure.

Identify and replace the failed System Control Module or
contact Liebert Global Services for support.

Battery Card Failure The Nfinity system has detected an

Intellislot Battery Card failure.

Identify and replace the failed Intellislot Battery Card or
contact Liebert Global Services for support.

UPS On Battery The Nfinity is drawing power from the

batteries, not from utility.

Verify input breaker is closed. Verify input voltage is
present and correct voltage. Verify input frequency is
correct.

Reminder alarm -

Check air filter

The fan filter reminder time has elapsed. Check and clean the fan filter and acknowledge the alarm.

This alarm may be disabled or the interval between these
alarms can be configured via the User Interface.

Short Circuit

Recovery - Please

Wait

User tried to turn the output on following a
short circuit on the output without waiting
for the required 30 seconds to expire.

Wait for at least 30 seconds and then turn the output on.

Power Module N+1
Redundancy Alarm

Number of power modules is not
adequate to provide power redundancy.

Reduce the UPS’s load, add power modules to the frame
or disable the alarm feature via the User Interface.

Output Off - Output

Short Circuit

A short circuit was detected on the output. Correct short (or extreme overload condition) and turn on

the UPS’s output.

UPS Output

Overload

The load on the Nfinity exceeded the
capacity of the active power modules.

Reduce the UPS’s load or add power modules.

Output exceeds

max load setting

This will occur if the max load alarm is
enabled, and the measured load at the
UPS’s output is greater than the value
set.

Reduce the UPS’s load, increase the Maximum Load
Alarm limit via configuration or disable the Maximum Load
Alarm limit via configuration.

Output Off-

Overload, bypass

unavailable

Normally a severe overload will cause the
unit to go to automatic bypass. This event
informs the user that bypass was not
qualified so the unit dropped the load to
protect itself.

Reduce the UPS’s output load and verify that the UPS’s
bypass source is qualified (amplitude and frequency).
Verify that the configuration voltage and frequency
settings are properly selected.

Switch To

Manual Bypass

The Nfinity is on automatic bypass.
Manual bypass switch should be
activated before servicing.

Transfer Nfinity to manual bypass and call Liebert service
for assistance.

Load Exceeds

Battery Module

Capacity

The measured load on the output will
cause the battery modules to exceed their
limits if the UPS transfers to battery
mode.

Reduce the UPS’s load or add battery capacity. If external
non-modular battery cabinet(s) are added, verify that the
UPS’s configuration is set to match the external battery
amp-hour rating and charger rating.

Bypass source

not qualified

The input voltage is not within the
specified voltage or frequency range so
the UPS will not allow an automatic or
manual transfer to bypass.

Verify UPS’s configuration for voltage and frequency.
Check UPS’s input breaker; disable this alarm if desired
via configuration.

Load exceeds

frame limit

Load is greater then the rated frame limit. Reduce the UPS’s load.

Troubleshooting

32

Assert manual

bypass

A user-initiated transfer to bypass will
assert this alarm, instructing the user to
enable the manual bypass switch. Once
the manual bypass is asserted, the alarm
will clear. This is a non-mutable alarm.

Engage the manual bypass switch (located at the bottom
front on the left hand corner of the unit). Once engaged,
the switch may be de-asserted to return to normal
operation.

Remote shutdown

on COM port 1

active

The most likely cause is that the incorrect
cable has been connected to the COM
port between the UPS and the host.

Check for a wiring problem to the Shutdown On Battery at
the COM1 connector. If this problem is not addressed, the
unit will shut down shortly after switching to battery
operation.

Battery Test

Weak Battery

The battery was determined to be weak
as a result of the battery test.

Depending on the age of the batteries, it may be
appropriate to replace all batteries in the system.
Schedule a battery test so that the system operation is
double-checked once the batteries become fully charged.

Battery Test

Failure

One or more of the following was
detected during a battery test:

• UPS output regulation failure was
detected.

• A battery module warning or failure
occurred.

• A system control failure occurred.

Replace the battery modules that have active failures/
warnings. Depending on the age of the batteries, it may be
appropriate to replace all batteries in the system.
Schedule a battery test so that the system operation is
double-checked once the batteries become fully charged.

Battery Cabinet

Not Connected

This is intended to detect a situation
where a Modular battery cabinet has
been connected for communication, but
the power busses are not connected.

Check that the Modular Battery breaker is closed. Verify
proper connections between UPS and Modular Battery
Cabinet.

Don’t Remove SC The only good System Control Module

lock lever was raised with the output on
and the unit is not on bypass.

• Lower the lock lever on the System Control Module.

• Provide qualified bypass power so that transfer to
bypass is possible.

• Add a redundant System Control Module so that the load
is not dropped.

Failure: Select

Manual Bypass

The System Controller detected a failure.
Select manual bypass so that the unit can
be serviced.

Transfer UPS to manual bypass and contact Liebert
Global Services.

Output Off -

bypass unavailable

This event informs the user that bypass
was not qualified so the unit dropped the
load to protect itself.

Verify that the UPS’s bypass source is qualified (amplitude
and frequency). Verify that the configuration voltage and
frequency settings are properly selected.

Last UPS Shutdown

By Emergency

Power Off

REPO switch was pressed. If REPO wasn’t pressed, check for REPO wiring problems.

External Battery
Module Warning

The energy delivered from the Non­Modular battery did not meet
programmed battery capacity.

Verify proper connections between UPS and Non-Modular
Battery Cabinet. Reenter the amp-hour rating for the
external battery (set the amp-hour entry to zero and press
the return key, then reset it to the appropriate value for the
external battery). If the problem persists, the external
battery should be replaced.

Battery Module

Not Ready

A battery module is not ready. In most
cases, one or more battery modules
should indicate a warning/failure
condition.

Ensure that the battery module is fully seated and the 1/4
turn fastener is engaged. If the problem persists, replace
the battery module with warning/failure condition indicated
at the User Interface. If no User Interface warning/failure
of battery module, look for the battery module with LEDs
indicating a problem and replace that unit.

Power Module

Not Ready

A power module is not ready. In most
cases, one or more power modules
should indicate a warning or failure
condition.

Ensure that the power module is fully seated and the 1/4
turn fastener is engaged. If the problem persists, replace
the power module with warning/failure condition indicated
at the User Interface. If no User Interface warning/failure
of power module, look for the power module with LEDs
indicating a problem and replace that unit.

User Interface Text Cause Action

Troubleshooting

33

4.2 Module LED Indication

Every Battery, Power and Control Module features two LEDs to help inform the user of the module
status, as shown below left. Refer to Table 2 for details.

Table 2 Guide to LEDs

Status

LED

(Green)

Fault

LED

(Yellow) Module Status

OFF OFF

Module not inserted into
frame. System is OFF.

OFF ON

Module is initializing
(max 30 seconds*).

FLASHING OFF

Normal Operation

FLASHING FLASHING

Module is in start-up
qualification mode or module
warning. **

FLASHING ON

Module failed and is off-line.

OFF FLASHING

Abnormal operation,
re-insert module.

If this persists, contact
Liebert Global Services at
1-800-543-2378.

ON OFF

ON ON

ON FLASHING

* If this persists for more than 30 seconds, check to verify the

lever is in the down position, otherwise the module is faulty.

** If both green and yellow LEDs are flashing for more than 30

seconds, then reinsert module.

Green Status LED
Yellow Fault LED

Control Module

Green Status LED
Yellow Fault LED

Green Status LED

Yellow Fault LED

Battery Module

Power Module

Troubleshooting

34

4.3 Module Replacement

Follow the instructions below when replacing or
adding a Control, Battery or Power Module to the
system.

To order additional modules, contact your Liebert
representative or call 1-800-LIEBERT.

4.3.1 Removing Modules

1. Remove bezel cover of appropriate module.
When replacing a Power or Battery Module,
verify the faulty module by confirming the
yellow LED is lit.

2. If removing a Control or Power Module with
no redundant modules, switch UPS to
manual bypass.

3. Pull out and lift the lever if replacing a
Control or Power Module, then turn fastener
counterclockwise until it is loosened.

4. To remove the module:
a. Start to pull out module (shown above

right, top). About 2/3 out it will stop.

b. Slide module away from the center of the

UPS (shown above right, center).

c. Continue to pull until module is removed

(shown above right, bottom).

5. Dispose of module in an environmentally
responsible way that complies with local
codes/regulations or return to Liebert for
proper disposal.

!

CAUTION

Battery Modules are heavy—66 lb (30 kg).

NOTE

Battery Modules may contain shipping
screws. These screws may be removed and
discarded.

WARNING

POTENTIAL TIP HAZARD

Install all battery modules starting from
the bottom. For module removal, start
from the top. Do not remove more than
one module at a time. Failure to do so
may cause unit to tip over and cause
serious injury.

Step 4a

MODULE REMOVAL
(Steps 4a-c)

Step 4b

Step 4c

Turn fastener
counterclockwise

Lift lever up (for
Control and Power Modules)

Troubleshooting

35

4.3.2 Adding or Replacing Modules

1. Lift module to appropriate bay, resting end of module on bay
shelf. Use caution not to rest the module on the lower bezel
cover.

2. Push module into bay. Once halfway in, slide module sideways
toward the center of the UPS. Continue pushing module until
fully inserted.

3. Press and turn fastener clockwise until locked. If replacing a
Control or Power Module, press lever down.

4. Wait about 15 seconds as the module performs a start-up test
and synchronizes with the other modules. Both the yellow and
green LEDs should be flashing. A green flashing LED will
then confirm the module is properly installed.

5. If UPS was placed in bypass manually, transfer back to UPS
operation.

6. Replace bezels.

4.3.3 Replacing the User Interface

1. Lift off user interface and set it on top
of the UPS frame.

2. The attached cable will be connected to
an Intellislot card, found in a port
between the control modules.

3. Remove the cable and the attached
Intellislot card from the UPS.

4. Plug the new Intellislot card into the
UPS.

5. Plug the new user interface cable into
the Intellislot card.

6. Set replacement User Interface into
proper position.

NOTE

Power Modules must be installed in the top half of the Nfinity frame. Battery Modules can be
installed in any bay of the UPS frame.

NOTE

When replacing the Control Module, record user configuration data before removing. Re-verify
the configuration settings after the new Control Module is installed.

Turn fastener
clockwise

Press lever down (for
Control and Power Modules)

Maintenance

36

5.0 MAINTENANCE

5.1 Maintenance

5.1.1 Proper Care

Keeping your Liebert Nfinity UPS operating properly is imperative to optimal performance and life of
the unit. It is recommended that a certified technician perform preventive and corrective mainte­nance. Liebert Global Services (LGS) is dedicated to ensuring the highest level of performance and
unmatched support for your Nfinity UPS. Contact an LGS representative for service to guarantee
maximum reliability and system availability.

5.1.2 Scheduled Maintenance

It is recommended the following maintenance is performed at least monthly:

• Clean unit

• Clean / replace filters

• Verify proper airflow

It is recommended the following maintenance is performed annually:

• Verify all Power Modules are operating properly.

• Verify all Battery Modules are operating properly.

• Verify redundancy (if applicable).

5.1.3 Replacing Fan Filters

Nfinity’s intake fans contain filters that will need to
be replaced or cleaned periodically, depending on
the surrounding environment. Check by removing
the bottom bezel and noting the condition of the two
filters. If filters are dirty, replace them by removing
the plastic cover over the filter frame and inserting
a new filter in its place. Use caution when replacing
filters when fans are running.

The fan filters are washable and can be reused. To
wash filters, place them under running water (with
the dirt side down) to remove dirt and dust. Blot dry
with a towel and allow air-drying before reusing.

Fan Filters

Specifications

37

6.0 SPECIFICATIONS

6.1 Product Warranty Registration

To register for warranty protection:

•Visit the Quick Links section of our Web site at:

http://www.liebert.com

• Click on Product Warranty Registration and fill in the form.

If you have any questions, please contact us at:

US: 800-222-5877
Outside the US: 614-841-6755

[e-mail]

General & Environmental Units Configuration

Unit Rating

k

VA 12 16 20 20

k

W 8.4 11.2 14 16
Conducted and Radiated EMC Levels FCC Part 15, Class A
Compliant Safety Standards UL 1778; c-UL
Compliant Immunity Standards IEEE C62.41, Category B

Mechanical Units

Dimensions

Width

in (mm)

20 (508)
Depth 28 (711)
Height 54 (1372)

Environmental Units

Operating Temperature (max) C (F) 0° - 40° (32° - 104°)
Relative Humidity % 0-95% non-condensing
Maximum operating altitude M (ft.) 3,000 (10,000)
Nominal heat dissipation BTU/Hr 3,186 4,248 5,903 6,748
Acoustic noise level dBA <62 @ 1 meter

Input Data Units

Nominal input voltage VAC 208 or 240

Voltage Range (Typical)

208VAC nominal: operating voltage range variable based on output loading percentages

% UPS Load Input Voltage

80 – 100% 170 VAC

60 – 80% 144 VAC
30 – 60% 127 VAC

0 – 30% 110 VAC

Power factor Cos ∅ >.98

Input frequency (nominal) Hz 60
Input frequency range Hz 40-70

Battery Module Units

Number of lead acid batteries 10
Number of battery cells 60
Battery capacity A/hr 9
Autonomy time (full load) minutes 6 (With an equal number of Battery & Power Modules, in a non-redundant configuration)
Maximum charge current (full load) A 3
Nominal Voltage VDC 120
Recharge Time Hrs Typically 6 (to 90% capacity)

Output Data Units

Output voltage VAC 208/120 or 240/120
Voltage regulation % ±3
Voltage stability (100% step load) % ±7
Recovery time msec 96

Voltage distortion %

<3 THD, linear load

<7 THD, non-linear load
Output frequency Hz 60
Efficiency at 100% load % 89

Output overload capability %

110 - 125% for 10 min

126-150% for 10 sec

151 - 200% for 2 cycles

Specifications

38

The Company Behind the Products

With over a million installations around the globe,
Liebert is the world leader in computer protection
systems. Since its founding in 1965, Liebert has
developed a complete range of support and
protection systems for sensitive electronics:

• Environmental systems—close-control air
conditioning from 1 to 60 tons

• Power conditioning and UPS with power
ranges from 300 VA to more than 1000 kVA

• Integrated systems that provide both
environmental and power protection in a
single, flexible package

• Monitoring and control—from systems of any
size or location, on-site or remote

• Service and support through more than 100
service centers around the world and a 24/7
Customer Response Center

While every precaution has been taken to ensure
the accuracy and completeness of this literature,
Liebert Corporation assumes no responsibility and
disclaims all liability for damages resulting from
use of this information or for any errors or
omissions.

© 2003 Liebert Corporation
All rights reserved throughout the world.
Specifications subject to change without notice.

® Liebert and the Liebert logo are registered
trademarks of Liebert Corporation. All names
referred to are trademarks or registered
trademarks of their respective owners.

SL-23953 (9/08) Rev.3

Technical Support / Service

Web Site

www.liebert.com

Monitoring

800-222-5877

[e-mail]

Outside the US: 614-841-6755

Single-Phase UPS

800-222-5877

[e-mail]

Outside the US: 614-841-6755

Three-Phase UPS

800-543-2378

[e-mail]

Environmental Systems

800-543-2778

Outside the United States

614-888-0246

Locations

United States

1050 Dearborn Drive

P.O. Box 29186

Columbus, OH 43229

Italy

Via Leonardo Da Vinci 8

Zona Industriale Tognana

35028 Piove Di Sacco (PD)

[phone]

Fax: [phone]

Asia

23F, Allied Kajima Bldg.

138 Gloucester Road

Wanchai

Hong Kong

[phone]

Fax: [phone]

POWER AVAILABILITY

Nfinity™ Power System

USER MANUAL