Omron Powli BU75RW 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.
Uninterruptible Power Supply
Instruction Manual
BU300RW
BU75RW/BU100RW/BU200RW/BU300RW

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, commercial power is converted to direct current, and then it is
converted back to a stable sine wave AC power before it is output.
When a commercial power failure is detected, the unit switches to battery supply to provide
continuous sine wave output. This is especially suitable for use where power supply condi-
tions are poor (for example, when there are large variations in voltage).
●Output capacity is 750VA/600W for the BU75RW, 1000VA/800W for the BU100RW,
2000VA/1600W for the BU200RW (when using 30A plug or power switchboard connection),
and 3000VA/2400W for the BU300RW (when connected to power switchboard).
©OMRON Corporation. 2008 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 significant 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.
●Note on user registration Please fill out the required items on the included user registration
card and send it to our customer support center.

ii
IMPORTANT SAFETY INSTRUCTION
1.SAVE THESE INSTRUCTIONS.
This manual contains important instructions for BU100RW/BU200RW/
BU300RW 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 36V DC for BU100RW and 72V DC for
BU200RW/BU300RW.
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 Yes
No
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 22
Charge the battery
Page 24
Measure the backup time
Page 24
Read “Using the UPS
monitoring software and
contact signal” Page 58
Operate Page 25
Deteriorated
battery? Fan stopped?
Perform maintenance
and inspection Page 45
Replace the battery
Page 46
Replace the fan
Page 55
Are you
using UPS monitoring
software or contact
signal?
Charge the battery again
Page 24
* 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 and connection.................................................................................................................... 9
2-3 Connecting the equipment .................................................................................................................. 15
2-4 Connecting the AC input...................................................................................................................... 18
2-5 Checking the operation ....................................................................................................................... 22
2-6 Charging the battery............................................................................................................................ 24
2-7 Measuring the initial value of backup time .......................................................................................... 24
2-8 Recharging the battery........................................................................................................................ 24
3. Operation......................................................................................................................................25
3-1 Precautions and notes for operation ................................................................................................... 25
3-2
Start and stop procedures and basic operation........................................................................................... 27
3-3 Interpreting beeps and displays................................................................................................................... 30
4. UPS functions...............................................................................................................................33
4-1 Suspending a beep ............................................................................................................................. 33
4-2 Self-diagnosis test............................................................................................................................... 33
4-3 Description of the auto battery test function........................................................................................ 34
4-4 Changing the setting of the functions.................................................................................................. 34
5. Measuring the backup time ..........................................................................................................43
5-1 How to measure backup time.............................................................................................................. 43
5-2 Estimated backup time........................................................................................................................ 43
6. Maintenance and Inspection.........................................................................................................45
6-1 Checking the battery ........................................................................................................................... 45
6-2 Replacing the battery .......................................................................................................................... 46
6-3 Replacing the fan ................................................................................................................................ 55
6-4 Cleaning .............................................................................................................................................. 57
7. Using the UPS monitoring software and contact signal................................................................58
7-1 When using the included UPS monitoring software to perform auto shutdown .................................. 60
7-2 When performing auto-save functions using the UPS service in Windows Server 2003/XP/2000 +
UPS service driver.............................................................................................................................. 63
7-3 When performing auto-save functions using the standard UPS service in Windows Server 2003/
XP/2000/NT......................................................................................................................................... 64
7-4 Contact signal...................................................................................................................................... 70
8. Using an SNMP/Web card............................................................................................................78
8-1 Adding an SNMP/Web card ................................................................................................................ 78
8-2 SNMP/Web card outline...................................................................................................................... 79
9. Extending the backup time ...........................................................................................................80
9-1 Connecting an additional battery unit.................................................................................................. 80
10. Troubleshooting..........................................................................................................................82
References .......................................................................................................................................83
A. Specifications ........................................................................................................................................ 83
B. Dimensions............................................................................................................................................ 84
C. Circuit block diagram............................................................................................................................. 86
D. Related products ................................................................................................................................... 86

BU75RW/BU100RW/BU200RWBU300RW
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 significant 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.
Two or more people should work together to carry, unpack and install.
●Because the unit is heavy, you may injure yourself or drop the unit, or it may fall over.
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 20kg (BU75RW/BU100RW) and 33kg (BU200RW/
BU300RW).
●If you drop the unit, stop using it and have it inspected and repaired.
For repair, contact us; ____
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 (100 VAC) and 50/60Hz frequency.
●Connecting to a commercial power source with a different rated input voltage or frequency may
result in a fire.
●The unit may fail.
Caution(for installation and connection)

Safety precautions
vi
When an abnormality (unusual sound or smell) occurs, turn OFF the
unit’s power switch to stop the output, and stop the supply of commercial
power.
For the BU75RW/BU100RW, disconnect the AC input plug from the wall
outlet. For the BU200RW/BU300RW, disconnect the AC input plug from
the wall outlet (commercial power) or turn OFF the INPUT PROTECTION
switch (input overcurrent protection switch) on the back of the unit.
●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 (10A or greater for BU75RW, 12A or greater for BU100RW, 24A or
greater for BU200RW, and 35A or greater for BU300RW).
●Otherwise, the power cord may be heated.
●When equipment with the maximum output capacity is connected, a maximum current of 10A
(BU75RW),12A (BU100RW), 24A (BU200RW) or 35A (BU300RW) flows.
When using the 15A plug (NEMA 5-15P) that is connected to the BU200RW
at shipment, the maximum capacity connectable to the output is
approximately 1100VA/880W.
●When the power consumption exceeds this capacity, the input voltage becomes larger than 20A,
which may lead to overheating or fire. .
●If the “overload” display appears, switch to a 30A plug or connect to a power switchboard with a
power capacity of 24A or more.
When using the 30A plug (NEMA L5-30P) that is connected to the
BU300RW at shipment, the maximum capacity connectable to the output
is approximately 2400VA/1920W.
●When the power consumption exceeds this capacity, the input voltage becomes larger than 30A,
which may lead to overheating or fire.
●If “OVER LOAD” is displayed, connect to a power switchboard with a power capacity of 35A or
more.
When changing the input cable for the BU200RW and BU300RW, make
sure to perform the connection as specified. Make sure to properly match
the AC input terminal with the appropriate wire color.
Do not perform work on the AC input terminal while BU300RW is
connected to a commercial power source.
●Refer to “2-4 Connecting the AC input” on page 16.
●Failure to do so may result in electric shock or ground fault.
Provide secure grounding.
●
After checking the plug shape of the wall outlet, directly connect the AC input plug of the unit to 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 fire.
Do not install the unit in other than specified orientations.
●Dropping or toppling the unit may cause injury.
●If you install the unit in an orientation other than specified, the unit cannot be protected from a
battery fluid leakage.
●Use the included vertical stand when positioning the unit vertically.
Caution(for installation and connection)

BU75RW/BU100RW/BU200RWBU300RW
vii
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.
Do not exceed the ranges specified 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.
●Do not use in places where the humidity is lower than 25% or higher than 85%.
●Do not install/store the unit in closed places such as cabinets with no clearance, places where
there is flammable or corrosive gas, places with large amounts of dust, places exposed to direct
sunlight, places exposed to shock or vibration, or outdoors.
●Installation or storing the unit in such a place may cause a fire.
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 fire.
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 fire.
●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 vent and the wall.
Do not connect a standalone transformer such as a voltage transformer
or isolating transformer to the output side.
●Overcurrent may damage the UPS or cause it to malfunction.
●There is no problem in connecting a transformer to the input side.
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 lowest 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.
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 fire.
●If the unit becomes wet or is dropped, immediately stop using it, disconnect the AC input plug
from the wall outlet (commercial power) or, when using the BU200RW/BU300RW, turn OFF the
INPUT PROTECTION switch (input overcurrent protection switch) on the back of the unit, and
have it 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 a fire.
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 fire.
Do not use the unit in a closed place and do not cover the unit.
●Doing so may cause abnormal heating or a fire.
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.
(For the BU75RW/BU100RW, disconnect the AC input plug from the wall
outlet. For the BU200RW/BU300RW, disconnect the AC input plug from
the wall outlet (commercial power) or turn OFF the INPUT PROTECTION
switch (input overcurrent protection switch) on the back of the unit.)
●Using the unit under such conditions may cause a fire.
●
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, and if using the BU200RW/
BU300RW, position it so that you can turn OFF the INPUT PROTECTION switch (input overcur-
rent protection switch) on the back of the unit.
If fluid leaks from the unit, do not touch the fluid.
●Doing so may cause blindness or burns.
●
If the fluid contacts your eyes or skin, wash it out with lots of clean water and consult your doctor.
Do not place objects heavier than 25kg 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 fire.
BU300RW 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, disconnect the AC
input plug from the wall outlet (commercial power) or, if using the BU200RW/BU300RW, turn
OFF the input overcurrent protection switch (INPUT PROTECTION switch) on the back of the
unit
Ambient temperature Expected life
20°C 4 to 5 years
30°C 2 to 2.5 years
* The values in the table are the expected life under stan-
dard use conditions and are not guaranteed.
Caution(for use)

BU75RW/BU100RW/BU200RWBU300RW
ix
When maintaining the connected equipment, turn OFF the unit’s power
switch to stop the output, and stop the supply of commercial power.
(For the BU75RW/BU100RW, disconnect the AC input plug from the wall
outlet. For the BU200RW/BU300RW, disconnect the AC input plug from
the wall outlet (commercial power) or turn OFF the INPUT PROTECTION
switch (input overcurrent protection switch) on the back of the unit.)
●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 fire.
If fluid leaks from the unit, do not touch the fluid.
●Doing so may cause blindness or burns.
●
If the fluid contacts your eyes or skin, wash it out with lots of clean water and consult your doctor.
Do not throw the unit into fire.
●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 flat 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 specified battery for replacement.
●Not doing so may cause a fire.
●Replacement battery pack for BU75RW/BU100RW: BUB100R
Replacement battery pack for BU200RW/BU300RW: BUB300R
Do not replace the battery in a place where there is flammable gas.
●Spark may occur when connecting the battery, which may cause an explosion or fire.
If fluid (dilute sulfuric acid) leaks from the battery, do not touch the fluid.
●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, fire or burn.
●Some electrical energy still remains inside the spent battery.
Do not put the battery into fire 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 for at least 8 hours 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.
●For the BU75RW/BU100RW, the battery can be charged once the AC input plug is connected to commer-
cial power. For the BU200RW/BU300RW, the battery can be charged once the plug is connected to com-
mercial power and the INPUT PROTECTION switch (input overcurrent protection switch) is turned ON.
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.
●Before storing an additional battery, charge it for at least 24 hours. 
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.
Check system operation beforehand if the unit is used in combination with a
device whose power supply frequency fluctuates widely, such as a personal
electric generator.
●The unit automatically recognizes the input power frequency when input power is supplied.If the unit is
connected when the input power frequency is not stable at the rated level, the unit may misidentify the
power supply frequency and may fail to operate normally. (If the unit is in operation, changing from com-
mercial power supply to another power supply source, such as generating equipment, will cause no prob-
lem. Set the generator's frequency to the same level as that of the commercial power supply.)
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.
Before performing a withstand voltage test or insulation resistance test, make
sure to remove the input surge protection GND screw from the back of the unit.
When in use, make sure the input surge protection GND screw is securely
fastened.
●Performing the withstand voltage test with the ground wire connected may damage the surge absorption
element built into the power supply input circuit.

BU75RW/BU100RW/BU200RWBU300RW
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.
●For the BU75RW/BU100RW, the battery can be charged once the AC input plug is connected to a com-
mercial power source. For the BU200RW/BU300RW, the battery can be charged once the plug is con-
nected and the INPUT PROTECTION switch (input overcurrent protection switch) is turned ON.
Quitting Battery Mode
●If a power failure lasts for an extended period of time, the battery discharges and power output from the
unit stops. Shut down your computer after performing appropriate procedures (for example, saving 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, turn OFF the power switch of either the unit or the connected devices.
See also
Setting switch 2 can be used to select whether or not auto restart is performed. See Page 35
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 is dead. If a period of 3
months is exceeded, you start operation by supplying commercial power and pressing the start switch.
However, if the battery is dead, you may not be able to start operation.
In this case, replace the battery according to the instructions in “6-2 Replacing the battery” on page 46.
Pb
Notes
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 significantly shortened.
If this unit is used with 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.
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
1
Open the package box and take out the UPS and accessories.
Two or more people should work together to carry, unpack and install.
●Because the unit is heavy, you may injure yourself or drop the unit, or it may fall over.
Product weights are 20kg (BU75RW/BU100RW) and approximately
33kg (BU200RW/BU300RW).
Unpack/transport this product considering this weight.
●Dropping may cause injury.
Caution
Instruction manual
(Japanese/English
edition)
Label (How to
determine
operating status)
User registration
card
Connector
for remote
ON/OFF
Terminal block cover
for BU200RW/
BU300RW (with
cable clamp)
Warranty
OMRON
contact
info label
Rubber feet
(For horizontal installation:
14.5 mm depth)
(For upright installation:
1.7 mm depth)
EIA/JIS 19-inch rack
mount support angles
Vertical stand 3P-2P
conversion
plug
CD-ROM
Connection cable(USB)
(Approx. 2.2 m)
<Accessories related to main unit> <UPS monitoring software>
Connection cable(RS-232C)
(Approx. 2.2 m)
1-1 Unpacking the product
Preparation
11
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; ____
(1)
Accessories
related to the
main unit
(2) UPS
monitoring
software
related items
Quick installation
guide
BU75RW BU100RW BU200RW BU300RW
Instruction manual (Japanese/English) 1 each 1 each 1 each 1 each
Warranty card 1 1 1 1
User registration card 1 1 1 1
Label (How to determine operating
status) 11 1 1
Remote ON/OFF connector 1 1 1 1
Vertical stand 2 per set 2 per set 2 per set 2 per set
Support angles compatible with EIA/
JIS 19-inch racks 1 set 1 set 1 set 1 set
Omron contact info label 1 1 1 1
Battery replacement date label 1 1 1 1
Control display panel explanation label 1 1 1 1
Rubber feet for horizontal placement
(14.5mm thick) 4 per set 4 per set 4 per set 4 per set
Rubber feet for vertical placement
(1.7mm thick) 6 per set 6 per set 6 per set 6 per set
3P-2P conversion plug 1 1 1 -
Terminal block cover (with cable
clamp) -- 1 1
*1 Do not use 3P-2P conversion plug when the unit is used in compliance with UL standard or CE marking.
BU75RW BU100RW BU200RW BU300RW
Quick Install Guide 1 1 1 1
CD-ROM 1 1 1 1
Connection cable (RS232C) 1 1 1 1
Connection cable (USB) 1 1 1 1

1.Preparation
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 25 that provides the details.
Front view
< Enlarged view of the display panel >
A. Status indicator digital display
B. Power switch
C. Beep stop/test switch
D. Battery addition lamp
E. Battery replacement lamp
F. Bypass operation lamp
(The input power supply is output as is.)
G. Power supply output lamp
H. Setting switch cover/Setting switches
I. Connection capacity/battery level meter
ON DIP
1 2 5678
3 4
A
I
B
C
H
ED
G F
<BU75RW/BU100RW>
<Control display panel>
<Air vent>
1-3 Name of each part
<Front cooling fan (intake) >
<Control display panel>
<BU200RW/300RW> (Image shows BU300RW)
<Air vent>

BU75RW/BU100RW/BU200RW/BU300RW
1
3
Rear view
C HDF
E
BA G I J K L
N
M
O
QRS
P
A. Contactsignalcard
B. RemoteON/OFFconnector
C. Contactsignalconnector
D. USBconnector
E. RS-232Cconnector
F. Rearcoolingfan(exhaust)
G. InputsurgeprotectionGND
H. Additionalbatterysignalconnector
I. Additionalbatteryconnector
J. PowersupplyoutputreceptacleA
K. PowersupplyoutputreceptacleB
L. PowersupplyoutputreceptacleC
M. Groundingterminal
N. ACinputovercurrentprotection
 switch45A
O. TerminalCover
P. ACinputcable
Q. PowersupplyoutputreceptacleC
 overcurrentbreaker(20A)
R. PowersupplyoutputreceptacleB
 overcurrentbreaker(20A)
S. PowersupplyoutputreceptacleA
 overcurrentbreaker(20A)
<BU200RW/BU300RW>
<BU75RW/BU100RW>
CD E F H
M
NO
I JG
BA K L
A.USBconnector
B.RS-232Cconnector
C.Coolingfan
D.InputsurgeprotectionGND
E.Contactsignalcard
F.Remote ON/OFF connector
G.Contactsignalconnector
H.Additionalbatteryconnector
I. ACinputovercurrentprotectionswitch
 INPUTPROTECTION15A
J.PowersupplyoutputreceptacleA
K.PowersupplyoutputreceptacleB
L.PowersupplyoutputreceptacleC
M.Groundingterminal
N.ACinputcable
O.Additionalbatterysignalconnector

1.Preparation
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”.
Additional battery unit connected to the UPS.
Batteries at end of useful life, necessary to replace the batteries.

2
5
Two or more people should work together to carry, unpack and install the
BU200RW/BU300RW.
●Because the unit is heavy, you may injure yourself or drop the unit, or it may fall over.
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 20kg (BU75RW/BU100RW) and 33kg (BUU200RW/
BU300RW).
●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 (100 VAC) and 50/60Hz frequency.
●Connecting to a commercial power source with a different rated input voltage or frequency may
result in a fire.
●The unit may fail.
When an abnormality (unusual sound or smell) occurs, turn OFF the
unit’s power switch to stop the output, and stop the supply of commercial
power.
For the BU75RW/BU100RW, disconnect the AC input plug from the wall
outlet. For the BU200RW/BU300RW, disconnect the AC input plug from
the wall outlet (commercial power) or turn OFF the INPUT PROTECTION
switch (input overcurrent protection switch) on the back of the unit.
●When performing maintenance on the connected devices, follow the above instructions to en-
sure 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 (10A or greater for BU75RW, 12A or greater for BU100RW, 24A or
greater for BU200RW, and 35A or greater for BU300RW).
●Otherwise, the power cord may be heated.
●When equipment with the maximum output capacity is connected, a maximum current of 10A
(BU75RW), 12A (BU100RW), 24A (BU200RW) or 35A (BU300RW) flows. .
When using the 15A plug (NEMA 5-15P) that is connected to the BU200RW
at shipment, the maximum capacity connectable to the output is
approximately 2000VA/1600W.
●When the power consumption exceeds this capacity, the input voltage becomes larger than 20A,
which may lead to overheating or fire.
●If the “overload” display appears, switch to a 30A plug or connect to a power switchboard with a
2-1 Precautions and notes on installation and connection
Installation and connection
22
Caution (for installation and connection)

2.Installation and connection
6
power capacity of 24A or more.
When using the 30A plug (NEMAL5-30P) that is connected to the
BU300RW at shipment, the maximum capacity connectable to the output
is approximately 2400VA/1920W.
●When the power consumption exceeds this capacity, the input voltage becomes larger than 30A,
which may lead to overheating or fire.
●If “OVER LOAD” is displayed, connect to a power switchboard with a power capacity of 35A or
more.
Provide secure grounding.
●After checking the plug shape of the wall outlet, directly connect the AC input plug of the unit to 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 fire.
Do not install the unit in other than specified orientations.
●Dropping or toppling the unit may cause injury.
●If you install the unit in an orientation other than specified, the unit cannot be protected from a
battery fluid leakage.
Do not use the unit where the maximum temperature exceeds 40°C.
●The battery becomes weak rapidly, which may cause a fire.
●Doing so may cause a failure or malfunction of the unit.
Do not exceed the ranges specified 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.
●Do not use in places where the humidity is lower than 25% or higher than 85%.
●Do not install/store the unit in closed places such as cabinets with no clearance, places where
there is flammable or corrosive gas, places with large amounts of dust, places exposed to
direct sunlight, places exposed to shock or vibration, or outdoors.
●Installation or storing the unit in such a place may cause a fire.
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 fire.
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 fire.
●If the cable is damaged, stop using the unit and have the cable repaired.
For repair, contact us; ____
Do not use any of the included accessories with other devices.
●The accessories are designed exclusively for use with this unit.
●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 vent and the wall.
Caution (for installation and connection)

BU75RW/BU100RW/BU200RW/BU300RW
2
7
Do not connect a standalone transformer such as a voltage transformer
or isolating transformer to the output side.
●Overcurrent may damage the UPS.
●There is no problem in connecting a transformer to the input side.
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 lowest 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.
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 for at least 8 hours 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.
●For the BU75RW/BU100RW, the battery can be charged once the AC input plug is connected to a com-
mercial power source. For the BU200RW/BU300RW, the battery can be charged once the plug is con-
nected and the INPUT PROTECTION switch (input overcurrent protection switch) is turned ON.
●When connecting an additional battery, charge it for at least 24 hours.
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 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.
●Before storing an additional battery, charge it for at least 24 hours.
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.
Caution (for installation and connection)

2.Installation and connection
8
Notes
Check system operation beforehand if the unit is used in combination with a
device whose power supply frequency fluctuates widely, such as a personal
electric generator.
●The unit automatically recognizes the input power frequency when input power is supplied.If the unit is
connected when the input power frequency is not stable at the rated level, the unit may misidentify the
power supply frequency and may fail to operate normally. (If the unit is in operation, changing from com-
mercial power supply to another power supply source, such as generating equipment, will cause no prob-
lem. Set the generator's frequency to the same level as that of the commercial power supply.)
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.
Before performing a withstand voltage test or insulation resistance test, make
sure to remove the input surge protection GND screw from the back of the unit.
When in use, make sure the input surge protection GND screw is securely
fastened.
●Performing the withstand voltage test with the ground wire connected may damage the surge absorption
element built into the power supply input circuit.
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 significantly shortened.
If this unit is used with 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.