Omron BU2002RWL User manual

• This manual provides important safety-related information. Thoroughly read and understand
this manual before installing and using the product.
• Keep this manual in a convenient location so that you can refer to it whenever necessary.
• The contents of this manual are subject to change without notice.
中文使用说明书请参照“10. Notes of Chinese”。
Uninterruptible Power Supply (UPS/200-240V model)
Instruction Manual 使用说明书
BU2002RWL/BU3002RWL/BU5002RWL
ESC
ESC
BU2002RWL/BU3002RWL
BU5002RWL

i
Introduction
Features of this product
Thank you for purchasing Omron's Uninterruptible Power Supply (UPS).
●The UPS protects computers and other devices from power failures, voltage variations, in-
stantaneous voltage drops, and surge voltage such as that caused by lightning (a phenom-
enon in which extraordinary high voltage occurs instantaneously).
●Under normal conditions, a stable sine wave AC voltage is output by raising the voltage (when
the input voltage is low) or lowering the voltage (when the input voltage is high) according
to the input voltage status, in synchronization with commercial power input. In addition, a
full-time inverter supply method (high efciency) is employed; when abnormalities in com-
mercial power are detected, such as in a power failure or when there are large changes in
voltage, power supply is uninterruptedly shifted to the battery, and sine wave output is con-
tinued.
●Output capacity is 2000VA/1400W for BU2002RWL, 3000VA/2100W for BU3002RWL and
5000VA/3500W for BU5002RWL.
©OMRON Corporation. 2013 All Rights Reserved.
Notes on the use of the Backup Power Supply
●This product is designed and manufactured for use with FA or OA equipment such as per-
sonal computers.
Do not use it when very high reliability and safety are required as listed below.
• Medical equipment that may cause death directly
• Applications that may cause injury (applications that directly affect the operation and con-
trol of planes, ships, railroads, elevators, and so on)
• Applications that are always subjected to vibration such as cars and ships
• Applications in which a failure of this product may cause signicant damage or effect to
the society and public (important computer systems, main communication equipment,
public transportation systems, and so on)
• Equipment with the same level of importance
●For equipment that greatly affects the safety of people and maintaining public functions,
special considerations related to operation, maintenance, and management must be taken
such as duplicating the system and emergency power generation facilities.
●Observe the contents of this manual such as the use conditions and environments.
●When you want to use this product for an important system that requires very high reliability,
contact us; ___________________________
●Do not modify/alter this product.
Disclaimers
We are not liable for any damage or secondary damage resulting from the use of our product,
including malfunction and failure of equipment, connected devices, or software.
●Make sure to read the safety precautions before using the unit.
●In the event you transfer or sell this unit to a third party, please include all of the documenta-
tion that came with this unit. This is to ensure that the unit is used in line with the conditions
described in the included documentation.
• This manual contains important safety-related information. Please read and understand
the contents of the manual before beginning operation.
If you discover any omissions or errors in the manual, please contact the shop of pur-
chase.
●Windows is the registered trademark of Microsoft Corporation in the United States and/or other
countries.
●The names of other companies and products mentioned herein are the trademarks or regis-
tered trademarks of their respective owners.

ii
IMPORTANT SAFETY INSTRUCTION
1.SAVE THESE INSTRUCTIONS.
This manual contains important instructions for BU60RE/BU100RE
that should be followed when using the UPS and batteries.
2.SYMBOL
This symbol indicates earth ground.
This symbol indicates turning on UPS.
This symbol indicates turning off UPS.
3.INTERNAL BATTERY
Internal battery voltage is 48VDC for BU2002RWL and 72VDC for
BU3002RWL/BU5002RWL.
4.TEMPERATURE RATING
The maximum ambient temperature of the UPS is 40°C.
5.ENVIRONMENT
The unit is intended for installation in a temperature controlled, indoor
area free of conductive contaminants.

iii
Procedure from installation to operation
Start
Installation/connection
Preparation for operation
Maintenance/
inspection
Yes
No
No
Yes
Read “Safety precautions”
Page v
Remove the product from the
package and check the contents
Page 1
Perform installation and
connection Page 5
Check the operation and
displays Pages 21
Charge the battery
Page 23
Measure the backup time
Page 34
Read “Using the UPS
monitoring software and
contact signal” Page 38
Operate Page 24
Deteriorated
battery?
Perform maintenance
and inspection Page 36
Replace the battery
Are you
using UPS monitoring
software or contact
signal?
Charge the battery again
Page 23
* Preparation for operation is
complete.

Table of Contents
iv
Table of Contents
Introduction ......................................................................................................................................... i
IMPORTANT SAFETY INSTRUCTION ................................................................................................ ii
Safety precautions ............................................................................................................................. v
1. Preparation.....................................................................................................................................1
1-1 Unpacking the product........................................................................................................................ 1
1-2 Checking the contents......................................................................................................................... 1
1-3 Name of each part ............................................................................................................................... 2
1-4 Explanation of symbols used on unit................................................................................................... 4
2. Installation and connection ............................................................................................................5
2-1 Precautions and notes on installation and connection........................................................................ 5
2-2 Installation ........................................................................................................................................... 9
2-3 Connecting the equipment ................................................................................................................ 14
2-4 Connecting the AC input ................................................................................................................... 18
2-5 Checking the operation ..................................................................................................................... 21
2-6 Charging the battery .......................................................................................................................... 23
2-7 Measuring the initial value of backup time ........................................................................................ 23
2-8 Recharging the battery ...................................................................................................................... 23
3. Operation......................................................................................................................................24
3-1 Precautions and notes for operation ................................................................................................. 24
3-2
Start and stop procedures and basic operation ........................................................................................ 26
3-3 Interpreting beeps and displays ................................................................................................................ 29
4. UPS functions ..............................................................................................................................30
4-1 Suspending a beep............................................................................................................................ 30
4-2 Self-diagnosis test............................................................................................................................. 30
4-3 Battery life counter function .............................................................................................................. 31
4-4 Operation panel setting ..................................................................................................................... 31
5. Measuring the backup time..........................................................................................................34
5-1 How to measure backup time............................................................................................................ 34
5-2 Estimated backup time...................................................................................................................... 34
6. Maintenance and Inspection ........................................................................................................36
6-1 Checking the battery ......................................................................................................................... 36
6-2 Cleaning............................................................................................................................................. 37
7. Using the UPS monitoring software and contact signal ..............................................................38
7-1 When using the included UPS monitoring software to perform auto shutdown............................... 40
7-2 When performing auto-save functions using the UPS service in
Windows Server 2003/XP/2000 + UPS service driver....................................................................... 42
7-3 When performing auto-save functions using the standard UPS service in
Windows Server 2003/XP/2000......................................................................................................... 43
7-4 Contact signal.................................................................................................................................... 48
8. Using an SNMP/Web card ...........................................................................................................52
8-1 Adding an SNMP/Web card............................................................................................................... 52
9. Troubleshooting............................................................................................................................53
10. Notes of Chinese........................................................................................................................54
References .......................................................................................................................................66
A. Specifications......................................................................................................................................... 66
B. Dimensions............................................................................................................................................. 67
C. Circuit block diagram............................................................................................................................. 71
D. Related products.................................................................................................................................... 71

v
: Indicates prohibition. For example, indicates that disassembly is prohibited.
: Indicates obligation. For example, indicates that grounding is necessary.
Misuse may cause death or serious injury.
Warning
Caution
Safety precautions
●The safety symbols and their meaning used in this manual are as follows:
* Property damage means damage to houses/household effects, livestock, and pets.
Note that events categorized as a caution required matter also may cause more serious results under
certain conditions.
Do not use this unit when very high reliability and safety are required as
listed below. This unit is designed and manufactured for use with FA or
OA equipment such as personal computers.
●Medical equipment or system that may cause death directly.
●Applications that directly affect the safety of people (For example, the operation and control of
cars and elevators).
● Applications in which a failure of the unit may cause signicant damage to the society and public
(For example, essential computer systems and main communication equipment.)
●Applications with the same level of importance.
Warning
Important information for safe operation is described.
Be sure to read it before installation and start of use.
Misuse may cause injury or property damage.
Carry the unit considering its weight and balance, and place it on a stable
and robust base.
●Dropping or toppling the unit may cause injury.
●The approximate weights of the units are 28kg (BU2002RWL), 33kg (BU3002RWL) and 61kg
(BU5002RWL).
●If you drop the unit, stop using it and have it inspected and repaired.
For repair, contact us; ____
Do not hold the side of the front panel when lifting.
●Injury may result if the panel comes off and falls.
Keep plastic package bags out of reach of children.
●Children may suffocate if they place their heads into plastic bags.
Make sure to connect the unit’s AC input plug to a commercial power
source with rated input voltage (200/208/220/230/240VAC) and 50/60 Hz
frequency.
●Connecting to a commercial power source with a different rated input voltage or frequency may
result in a re.
●The unit may fail.
Caution (for installation and connection)

Safety precautions
vi
For BU5002RWL, when an abnormality (unusual sound or smell) occurs,
disconnect the AC input plug from the wall outlet, or turn OFF the INPUT
PROTECTION switch (input overcurrent protection switch) on the back of
the unit. The socket-outlet shall be installed near the equipment and shall
be easily accessible.
For BU2002RWL and BU3002RWL, turn OFF the external breaker installed
on the input side.
●When performing maintenance on the connected devices, follow the above instructions to ensure
safety.
Do not connect devices such as dryers, some solenoid valves, etc., which
have a half-wave rectifier that allows only half-cycle AC power to flow
through.
●Overcurrent may damage the UPS.
Connect the unit to a wall outlet (commercial power) with the appropriate
capacity (11A or greater for BU2002RWL, 16A or greater for BU3002RWL
and 27A or greater for BU5002RWL).
●Otherwise, the power cord may be heated.
●When equipment with the maximum output capacity is connected, a maximum current of 11A
(BU2002RWL), 16A (BU3002RWL), or 27A (BU5002RWL) ows.
When changing the input cable, make sure to perform the connection as
specied.
●When connecting a cable to the terminal block, use a cable that complies with the input current
specication of the UPS.
●Failure to do so may result in electric shock or ground fault.
When in use, make sure the output terminal block cover is attached. Do
not turn ON the power switch when it is detached.
●Voltage is applied to the output terminal block when the power switch is ON, which can result in
electric shock.
Provide secure grounding.
●For AC input plug connection, connect the plug directly to a commercial power source. For termi-
nal block connection, connect the cable to a commercial power source and ground it. A failure or
leak that occurs when the unit is not properly grounded may result in electric shock.
Do not disassemble, repair, or modify the unit.
● Doing so may cause an electric shock or a re.
Do not install the unit in other than specied orientations.
●Dropping or toppling the unit may cause injury.
● If you install the unit in an orientation other than specied, the unit cannot be protected from a
battery uid leakage.
●Use the included vertical stand when positioning the unit vertically.
Do not use the unit where the maximum temperature exceeds 40°C.
●The battery deteriorates rapidly.
●Doing so may cause a failure or malfunction of the unit.
Caution (for installation and connection)

vii
Do not exceed the ranges specied for environmental conditions during
use/storage.
Do not install or store the unit in the places listed below.
●Do not store in places where the humidity is lower than 10% or higher than 90%.
●Do not use the unit in places where the ambient temperature is lower than 0°C or higher than
40°C. (With no condensation)
●Do not use in places where the humidity is lower than 10% or higher than 90%.
●Do not install/store the unit in closed places such as cabinets with no clearance, places where
there is ammable or corrosive gas, places with large amounts of dust, places exposed to direct
sunlight, places exposed to shock or vibration, salty or wet places, or outdoors.
● Installation or storing the unit in such a place may cause a re.
Do not connect equipment that exceeds the output capacity of the unit.
You can use plug strip to connect additional devices, but do not connect
devices that exceed the current capacity of the plug strip.
●The current protection of the unit may operate, which may stop the output.
● The wiring of the plug strip heats up, which may cause a re.
Do not pinch or sharply bend the cable.
Do not fold or knot the cable.
●
Doing so may cause the cable to be damaged or heated, which may cause an electric shock or a re.
●If the cable is damaged, stop using the unit and have the cable repaired.
● For repair, contact us; ____
All of the included accessories are designed to be used exclusively with
the unit. Do not use the accessories with other devices.
●Doing so may compromise the safety of devices.
Do not block the air vents (front and rear).
●Doing so will cause the internal temperature to rise, which may cause the unit to fail and the bat-
tery to deteriorate.
●Leave at least 5 cm of space between the front vent and the wall, and at least 10 cm of space
between the rear vent and the wall.
Do not connect devices that cannot be used with commercial power
supply.
●When the unit’s power switch is turned ON and an error occurs with the connected device, by-
pass operation is performed and commercial power supply is supplied as is to the connected
devices.
When installing the unit on a rack, place it on the lower shelf.
●Injury may result if the unit falls.
Make sure to use the mounting screws included with the brackets.
●Mounting screws other than those included may not be strong enough to support the unit, caus-
ing it to fall.
●If you attach the case using long screws other than those included with the product, you may
damage the internal parts of the unit.
When using the unit in the 100V output mode, check that the output
voltage is set to 100V, and then turn ON the power switch.
●Connecting a 100V device to the unit while outputting in the 200V mode may cause a failure of
the device or a re.
●The output voltage can be set with “Settings” - “In/Out Settings” - “Output Voltage” in the menu
on the LCD.
Caution (for installation and connection)

Safety precautions
viii
Do not allow the unit to come in contact with water.
If you drop the unit, stop using it.
● Doing so may cause an electric shock or a re.
●If the unit becomes wet or is dropped, immediately stop using it, disconnect the AC input cable
from commercial power and have the unit inspected and repaired.
● For repair, contact us; ____.
When the battery is dead, replace it immediately or stop using the unit.
● Continuing the use of it may cause re or electric shock due to liquid leaks.
Using a dry cloth, periodically wipe the dust from the AC input plug, input
terminal block and power supply output receptacles.
● Accumulated dust may cause a re.
Do not use the unit in a closed place and do not cover the unit.
● Doing so may cause abnormal heating or a re.
●Depending on the operating environment, hydrogen gas may be generated from the battery, re-
sulting in a rupture or explosion. Ventilate the area around the unit.
If you notice an abnormal sound or smell, smoke, or leaking fluid,
immediately turn OFF the unit's power switch and stop the supply of
commercial power.
● Using the unit under such conditions may cause a re.
●
If you notice such a condition, stop using the unit and contact us at _____ for inspection and repairs.
●Position the unit in such a way that you can immediately disconnect the AC input plug from the
wall outlet (commercial power) in the event a problem occurs.
If uid leaks from the unit, do not touch the uid.
●Doing so may cause blindness or burns.
●
If the uid contacts your eyes or skin, wash it out with lots of clean water and consult your doctor.
Do not place objects heavier than 25 kg on the unit, and do not drop
heavy objects onto the unit.
●Doing so may cause distortion/damage to the case or a failure of the internal circuit, which may
cause a re.
The unit is equipped with a bypath circuit which is able to supply electric
power to connected devices even when the inner control circuit is broken
down by defects or malfunctions
●Output is continuing even when all indicators of the front panel are off.
●If you want to stop the output, either stop the source of commercial power or disconnect the AC
input plug from the wall outlet (commercial power).
Do not sit or stand on top of the product, use it as a step ladder, or lean
against it.
●Doing so may cause the unit to fail or to fall over and result in injury.
* The values in the table are the expected life under stan-
dard use conditions and are not guaranteed.
Caution (for use)
Ambient temperature Expected life
25°C 5 years
35°C 2.5 years

ix
When maintaining the connected equipment, turn OFF the unit’s power
switch to stop the output, and stop the supply of commercial power.
●Even if commercial power to the UPS is stopped while it is in operation, the power output of this
unit does not stop and power is supplied from the receptacle.
Do not disassemble, repair, or modify the unit.
● Doing so may cause an electric shock or a re.
If uid leaks from the unit, do not touch the uid.
●Doing so may cause blindness or burns.
●
If the uid contacts your eyes or skin, wash it out with lots of clean water and consult your doctor.
Do not throw the unit into re.
●The lead battery in the unit may explode, or leak dilute sulfuric acid.
Do not insert metal objects into the power supply output receptacle of the
UPS.
●Doing so may result in electric shock.
Do not insert metal objects into the battery connectors.
Do not create a short between the connector terminals.
●Doing so may result in electric shock.
Perform replacement on a stable and at place.
●Handle the battery carefully so that you do not drop it.
●Not doing so could cause injury or burns due to liquid (acid) leakage.
Use a specied battery for replacement.
● Not doing so may cause a re.
●Replacement battery pack for
BU2002RWL: BUB2002RW
BU3002RWL: BUB3002RW
BU5002RWL: BUB3002RW (2PCS.)
Do not replace the battery in a place where there is ammable gas.
● Spark may occur when connecting the battery, which may cause an explosion or re.
If uid (dilute sulfuric acid) leaks from the battery, do not touch the uid.
●Doing so may cause blindness or burns.
●If it contacts your eyes or skin, wash it out with lots of clean water and consult your doctor.
Do not disassemble or modify the battery.
●Doing so could cause dilute sulfuric acid leak, which could cause blindness and burns.
Do not drop the battery and do not expose it to strong impact.
●Dilute sulfuric acid may leak.
Do not short the battery with metal objects.
● Doing so could cause an electric shock, re or burn.
●Some electrical energy still remains inside the spent battery.
Do not put the battery into re and do not break it.
●The battery may explode or leak dilute sulfuric acid.
Do not use a new battery and an old battery at the same time.
●Dilute sulfuric acid may leak.
Caution (for maintenance)
Caution (for battery replacement)

Safety precautions
x
Notes
When moving the unit from a cold place to a warm place, leave it for several
hours before using it.
●If the unit is promptly turned ON after being moved to a warmer place, condensation may form inside the
unit and cause it to fail.
Charge the battery soon after purchasing the unit.
●If you do not use the unit for a long time after the purchase, the battery may deteriorate and the battery
may become unusable.
●The battery can be charged once the AC input plug is connected to commercial power.
Recharge the battery for at least 8 hours every 6 months when the storage
temperature is 25°C or less, or every 2 months when the storage temperature is
40°C or less.
●The battery self-discharges even when it not being used, and it goes into over-discharge state if it is left
for a long period of time. The backup time may become shorter or the battery may become unusable.
●We recommend keeping the temperature 25°C or less when storing the unit for long periods of time.
●Turn OFF the unit’s power switch when storing it.
Do not short the output lines of the unit to each other, and do not short the
output lines to the ground.
●The unit may fail.
Do not connect the AC input terminal of the unit to its Power Supply Output
terminal during the Battery Mode.
●The unit may fail.
Do not connect a page printer (such as a laser printer) to the unit.
●The unit repeatedly and frequently switches between Commercial Power Mode and Battery Mode, which
may shorten the life of the battery.
●The page printer has a large peak current, so an excess of the connection capacity or a power failure due
to instantaneous voltage drop may be detected.
Do not install or store the unit in a place exposed to direct sunlight.
●The rise of temperature may cause the built-in battery to deteriorate rapidly and become unusable.
Do not perform withstand voltage tests.
●Performing withstand voltage tests may damage the surge absorption element built into the power supply
input circuit.
●When performing an insulation resistance test, use the 400 VDC range.
Before stopping the commercial power to the unit, turn OFF the power switch of
the unit.
●The unit enters Battery Mode when commercial power is stopped. If you frequently use the unit in Battery
Mode, the battery life may be signicantly shortened.
If this unit is used for an inductive device such as a coil or motor, check the
operation beforehand.
●With some types of devices, the effect of inrush current may cause this unit to stop operating properly.

xi
Explanation
Usual operation
●You may either leave the power switch of the unit ON (operation status) or turn it OFF each time when
stopping the connected system. Choose whichever operation method is more convenient. We recommend
turning OFF the power switch when you do not use connected devices for a long time.
●The battery can be charged once the unit is connected to a commercial power source.
Quitting Battery Mode
●If a power failure lasts for an extended period of time, the battery discharges completely and power output
from the unit stops. Shut down your computer after performing appropriate procedures (for example, sav-
ing data) while the unit is still supplying power.
Rebooting
●If the battery discharges completely during a power failure, the output stops. After recovery from the
power failure, the unit automatically restarts and output begins. If you do not want to restart the connected
devices, disable the “Settings” - “Boot Settings” - “Auto reboot” setting in the menu on the unit’s LCD, or
turn OFF the power switch of the connected devices.
Scheduled operation using the UPS monitoring software
●When performing scheduled operation in which the UPS is stopped and a device such as a breaker is
used to stop the UPS at the same time that commercial power stops, specify a period of no more than 3
months for the start of the next operation.
If you specify a period longer than 3 months, the internal timer is reset and the scheduled operation does
not start. Note that this period reduces to approximately half when the battery needs to be replaced. If a
period of 3 months is exceeded, you start operation by supplying commercial power and pressing the start
switch. However, if the battery needs to be replaced, you may not be able to start operation.
In this case, replace the battery.
Pb
Notes
Check system operation beforehand if the unit is used in combination with a
device whose power supply voltage and frequency uctuate widely, such as a
generator.
●If the generator’s output voltage/frequency falls out of the input voltage/frequency range, the unit will enter
Battery Mode.
●Even if the input frequency is within the range, the unit will enter Battery Mode when a rapid change (5
Hz/sec or greater) occurs.
In the event you transfer or sell this unit to a third party, please include all of the
documentation that came with the unit. This is to ensure that the unit is used in
line with the conditions described in the included documentation.
●This manual contains important safety-related information. Please read and understand the contents of
the manual before beginning operation.
This unit uses lead acid batteries,
●Which are a valuable recyclable resource. Please recycle.
Take measures for handling unforeseen accidents, such as data backup and
system redundancy.
●The output may stop when there is a circuit failure in the UPS.

1
Open the package box and take out the UPS and accessories.
The approximate masses of the units are 28kg (BU2002RWL), 33kg
(BU3002RWL) and 61kg (BU5002RWL) . Since the unit is heavy, be
careful not to hurt yourself when lifting or transporting it.
Hold the handle of the inner packaging when taking out the product
from the package box.
●Hold the handle of the inner packaging when taking out the product from the package box.
●Dropping may cause injury.
Caution
Warranty
Instruction manual
(Japanese/English
edition)
Label (How to
determine
operating status)
Rubber feet Battery
replacement
date label
User registration
card/sheet
OMRON
contact
info label
EIA/JIS 19-inch rack
mount support angles
Ear BracketTerminal
block cover
(with cable
clamp)
Upright stand
CD-ROM
<Accessories related to main unit> <UPS monitoring software>
Connection cable(RS-232C)
(Approx. 2.2 m)
1-1 Unpacking the product
Preparation
1
1-2 Checking the contents
Check whether all the package contents are included and there is no damage found on their appearance.
If you should notice defects or anything wrong, contact us; OMRON Electronic Systems & Equipments
Customer Support Center.
(1)
Accessories
related to the
main unit
(2) UPS
monitoring
software
related items
Quick installation
guide
BU2002RW BU3002RW BU5002RW
Instruction manual (Japanese/English) 1 each 1 each 1 each
Warranty card (Japanese/Chinese) 1 each 1 each 1 each
User registration card/sheet 1 each 1 each 1 each
Vertical stand 2 per set 2 per set 2 per set
Support angles compatible with EIA/JIS 19-inch racks 1 set 1 set 1 set
Omron contact info label 1 1 1
Battery replacement date label 1 1 1
Rubber feet 6 per set 6 per set 6 per set
Serial number label 4 4 4
Ear bracket 2 per set 2 per set 2 per set
Terminal block cover (with cable clamp) 111
SC20G (included accessory) - - 1 set
Bracket screws 1 set 1 set 1 set
BU2002RW BU3002RW BU5002RW
Quick Install Guide 111
CD-ROM 111
Connection cable (RS232C) 111

BU2002RWL/BU3002RWL/BU5002RWL
1
2
This section describes the name of each part of the UPS.
For information on the function of each part, refer to "2. Installation and connection" on page 5 and
"3. Operation" on page 24 that provides the details.
Front view
< Enlarged view of the operation panel >
A. Power supply output lamp
B. Battery mode lamp
C. Battery replacement lamp
D. LCD for status and setting display
E. Power switch
F. ESC switch
G. Up switch
H. Down switch
I. Enter switch
1-3 Name of each part
< BU2002RWL/BU3002RWL >
< BU5002RWL >
ESC
<Air vent> <Operation panel>
ESC
ESC
A
B
C
D
E
F G H I
<Operation panel><Air vent>

1.Preparation
3
Rear view
A. Option slot
B. Contact signal port
C. RS-232C port
D. Cooling fan
E. AC input terminal block
F. AC output terminal block
G. AC input overcurrent protection switch
H. AC input cable
I. AC output receptacle
< BU2002RWL >
< BU3002RWL >
< BU5002RWL >
A B D D E F G
C
A B D E F G
C
I IB
F G
A C D
H

BU2002RWL/BU3002RWL/BU5002RWL
1
4
1-4 Explanation of symbols used on unit
Symbol Description
Start the UPS.
Stop the UPS.
Suspend a beep.
UPS output power enabled, supplied by operating on line mode, battery mode.
Bypass output “ON”.
UPS output power enabled, supplied by operating on battery mode.
Batteries at end of useful life, necessary to replace the batteries.

5
Carry the unit considering its weight and balance, and place it on a stable
and robust base.
●Dropping or toppling the unit may cause injury.
●The approximate weights of the units are 28kg (BU2002RWL), 33kg (BU3002RWL) and 61kg
(BU5002RWL).
●If you drop the unit, stop using it and have it inspected and repaired.
For repair, contact us; ____
Do not hold the side of the front panel when lifting.
●Injury may result if the panel comes off and falls.
Keep plastic package bags out of reach of children.
●Children may suffocate if they place their heads into plastic bags.
Make sure to connect the unit’s AC input plug to a commercial power
source with rated input voltage (200/208/220/230/240VAC) and 50/60Hz
frequency.
●Connecting to a commercial power source with a different rated input voltage or frequency may
result in a re.
●The unit may fail.
For BU5002RWL, when an abnormality (unusual sound or smell) occurs,
disconnect the AC input plug from the wall outlet, or turn OFF the INPUT
PROTECTION switch (input overcurrent protection switch) on the back of
the unit. The socket-outlet shall be installed near the equipment and shall
be easily accessible.
For BU2002RWL and BU3002RWL, turn OFF the external breaker installed
on the input side.
●When performing maintenance on the connected devices, follow the above instructions to
ensure safety.
Do not connect devices such as dryers, some solenoid valves, etc. ,
which have a half-wave rectier that allows only half-cycle AC power to
ow through.
●Overcurrent may damage the UPS.
Connect the unit to a wall outlet (commercial power) with the appropriate
capacity (11A or greater for BU2002RWL, 16A or greater for BU3002RWL
and 27A or greater for BU5002RWL).
●Otherwise, the power cord may be heated.
●When equipment with the maximum output capacity is connected, a maximum current of 11A
(BU2002RWL), 16A (BU3002RWL), or 27A (BU5002RWL) ows.
When changing the input cable, make sure to perform the connection as
specied.
●When connecting a cable to the terminal block, use a cable that complies with the input current
specication of the UPS.
●Failure to do so may result in electric shock or ground fault.
2-1 Precautions and notes on installation and connection
Installation and connection
2
Caution (for installation and connection)

BU2002RWL/BU3002RWL/BU5002RWL
2
6
When in use, make sure the output terminal block cover is attached. Do
not turn ON the power switch when it is detached.
●Voltage is applied to the output terminal block when the power switch is ON, which can result in
electric shock.
Provide secure grounding.
●For AC input plug connection, connect the plug directly to a commercial power source. For termi-
nal block connection, connect the cable to a commercial power source and ground it. A failure or
leak that occurs when the unit is not properly grounded may result in electric shock.
Do not disassemble, repair, or modify the unit.
● Doing so may cause an electric shock or a re.
Do not install the unit in other than specied orientations.
●Dropping or toppling the unit may cause injury.
● If you install the unit in an orientation other than specied, the unit cannot be protected from a
battery uid leakage.
Do not use the unit where the maximum temperature exceeds 40°C.
● The battery becomes weak rapidly, which may cause a re.
●Doing so may cause a failure or malfunction of the unit.
Do not exceed the ranges specied for environmental conditions during
use/storage.
Do not install or store the unit in the places listed below.
●Do not store in places where the humidity is lower than 10% or higher than 90%.
●Do not use the unit in places where the ambient temperature is lower than 0°C or higher than
40°C. (With no condensation)
●Do not use in places where the humidity is lower than 10% or higher than 90%.
●Do not install/store the unit in closed places such as cabinets with no clearance, places where
there is ammable or corrosive gas, places with large amounts of dust, places exposed to direct
sunlight, places exposed to shock or vibration, salty or wet places, or outdoors.
● Installation or storing the unit in such a place may cause a re.
Do not connect equipment that exceeds the output capacity of the unit.
You can use a plug strip to connect additional devices, but do not connect
devices that exceed the current capacity of the plug strip.
●The current protection of the unit may operate, which may stop the output.
● The wiring of the plug strip heats up, which may cause a re.
Do not pinch or sharply bend the cable.
Do not fold or knot the cable.
Doing so may cause the cable to be damaged or heated, which may cause
an electric shock or a re.
●If the cable is damaged, stop using the unit and have the cable repaired.
For repair, contact us; ____
The accessories are designed exclusively for use with this unit.
Do not use any of the included accessories with other devices.
●Doing so may compromise the safety of devices.
Do not block the air vents (front and rear).
●Doing so will cause the internal temperature to rise, which may cause the unit to fail and the bat-
tery to deteriorate.
●Leave at least 5 cm of space between the front vent and the wall, and at least 10 cm of space
between the rear vent and the wall.
Caution (for installation and connection)

2.Installation and connection
7
Do not connect devices that cannot be used with commercial power
supply.
●When the unit’s power switch is turned ON and an error occurs with the connected device, by-
pass operation is performed and commercial power supply is supplied as is to the connected
devices.
When installing the unit on a rack, place it on the lower shelf.
●Injury may result if the unit falls.
Make sure to use the mounting screws included with the brackets.
●Mounting screws other than those included may not be strong enough to support the unit, caus-
ing it to fall.
●If you attach the case using long screws other than those included with the product, you may
damage the internal parts of the unit.
When using the unit in the 100V output mode, check that the output
voltage is set to 100V, and then turn ON the power switch.
●Connecting a 100V device to the unit while outputting in the 200V mode may cause a failure of
the device or a re.
●The output voltage can be set with “Settings” - “In/Out Settings” - “Output Voltage” in the menu
on the LCD.
Caution (for installation and connection)

BU2002RWL/BU3002RWL/BU5002RWL
2
8
Notes
When moving the unit from a cold place to a warm place, leave it for several
hours before using it.
●If the unit is promptly turned ON after being moved to a warmer place, condensation may form inside the
unit and cause it to fail.
Charge the battery soon after purchasing the unit.
●The battery self-discharges even when it not being used, and it goes into over-discharge state if it is left
for a long period of time.
●The battery can be charged once the AC input plug is connected to a commercial power source.
When storing the unit, charge the battery for at least 8 hours and turn OFF the
power switch.
●Even if the unit is not used, the battery gradually discharges, and if it is left for a long time, it goes into an
over discharge state.
The backup time may become shorter or the battery may become unusable.
●Connect the unit to a commercial power source for at least 12 hours every 6 months when the storage
temperature is 25°C or less, or every 2 months when the storage temperature is 40°C or less.
●Turn off the power switch of the unit during storage.
Do not short the output lines of the unit to each other, and do not short the
output lines to the ground.
●The unit may fail.
Do not connect the AC input plug of the unit to its Power Supply Output
Receptacle during the Battery Mode.
●The unit may fail.
Do not connect a page printer (such as a laser printer) to the unit.
●The unit repeatedly and frequently switches between Commercial Power Mode and Battery Mode, which
may shorten the life of the battery.
●The page printer has a large peak current, so an excess of the connection capacity or a power failure due
to instantaneous voltage drop may be detected.
Do not install or store the unit in a place exposed to direct sunlight.
●The rise of temperature may cause the built-in battery to deteriorate rapidly and become unusable.
Do not perform withstand voltage tests.
●Performing withstand voltage tests may damage the surge absorption element built into the power supply
input circuit.
●When performing an insulation resistance test, use the 400 VDC range.
Before stopping the commercial power to the unit, turn OFF the power switch of
the unit.
●The unit enters Battery Mode when commercial power is stopped. If you frequently use the unit in Battery
Mode, the battery life may be signicantly shortened.
If this unit is used for an inductive device such as a coil or motor, check the
operation beforehand.
●With some types of devices, the effect of inrush current may cause this unit to stop operating properly.
The battery contains dilute sulfuric acid which is a toxic substance. If uid leaks
from the battery, do not let it contact your skin or clothes. If contacted, wash
it out with clean water. In particular, if the uid gets in your eyes, immediately
wash them with clean water and seek medical treatment.
Check system operation beforehand if the unit is used in combination with a
device whose power supply voltage and frequency uctuate widely, such as a
generator.
●If the generator’s output voltage/frequency falls out of the input voltage/frequency range, the unit will enter
Battery Mode.
●Even if the input frequency is within the range, the unit will enter Battery Mode when a rapid change (5
Hz/sec or greater) occurs.