Omron Powli BU50SW 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.
Uninterruptible Power Supply (UPS)
Instruction Manual
BU50SW/BU75SW/BU100SW/BU150SW
-
バッテリ
交換
バッテリ
増設
ブザー停止/テスト
電源出力
バイパス
運転
BU150SW

Introduction
Notes on the use of the Backup Power Supply
●This product is designed and manufactured for use for OA equipment such as personal
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
control 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 re-
liability, contact us; _______________________
●Do not modify/alter this product.
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,
instantaneous voltage drops, and surge voltage such as that caused by lightning (a
phenomenon in which extraordinary high voltage occurs instantaneously).
●Under normal conditions, it converts the commercial power to a direct current once, recon-
verts it to a stable AC sine wave, and outputs it.
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 conditions are poor (for example, when there are large variations in voltage).
●The output capacity is 500VA/350W for BU50SW, 750VA/500W for BU75SW, 1000VA/700W
for BU100SW and 1500VA/1050W for BU150SW.
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
documentation 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
purchase.
●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
registered 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.
©OMRON Corporation. 2005 All Rights Reserved.

IMPORTANT SAFETY INSTRUCTION
1.SAVE THESE INSTRUCTIONS.
This manual contains important instructions for BU50SW/BU75SW/
BU100SW/BU150SW 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 24V DC for BU50SW/BU75SW/BU100SW, 36V
DC for BU150SW.
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.

BU50SW / BU75SW / BU100SW / BU150SW
i
Procedure from installation to operation
Start
Installation/connection
Preparation for operation
Maintenance/
inspection
Yes
No
No
Yes Yes
No
Read “Safety precautions”
Page iii
Remove the product from the
package and check the contents
Page 1
Perform installation and
connection Page 5
Check the operation and
displays Pages 13
Charge the battery
Page 15
Measure the backup time
Page 15
Read “Using the UPS
monitoring software and
contact signal” Page 39
Operate Page 16
Deteriorated
battery? Fan stopped?
Perform maintenance
and inspection Page 31
Replace the battery
Page 32
Replace the fan
Page 37
Are you
using UPS monitoring
software or contact
signal?
Charge the battery again
Page 15
* Preparation for operation is
complete.

ii
Table of Contents
■ Table of Contents ■
Introduction
IMPORTANT SAFETY INSTRUCTION
Safety precautions............................................................................................................................................. iii
1. Preparation .....................................................................................................................................................1
1-1 Unpacking the product........................................................................................................................1
1-2 Checking the contents.........................................................................................................................2
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 ................................................................................................................10
2-4 Checking the operation .....................................................................................................................13
2-5 Charging the battery..........................................................................................................................15
2-6 Measuring the initial value of backup time ........................................................................................15
2-7 Recharging the battery......................................................................................................................15
3. Operation......................................................................................................................................................16
3-1 Precautions and notes for operation .................................................................................................16
3-2 Start and stop procedures and basic operation................................................................................18
3-3 Interpreting beeps and displays........................................................................................................20
4. UPS functions...............................................................................................................................................23
4-1 Suspending a beep ...........................................................................................................................23
4-2 Testing the UPS (self-diagnostic test)................................................................................................23
4-3 Description of the auto battery test function......................................................................................24
4-4 Changing the setting of the functions................................................................................................24
5. Measuring the backup time........................................................................................................................29
5-1 How to measure backup time............................................................................................................29
5-2 Estimated backup time......................................................................................................................29
6. Maintenance and Inspection ......................................................................................................................31
6- 1 Checking the battery .........................................................................................................................32
6-2 Replacing the battery ........................................................................................................................32
6-3 Replacing the fan ..............................................................................................................................37
6-4 Cleaning ............................................................................................................................................38
7. Using the UPS monitoring software and contact signal...............................................................................39
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 ...................................................................41
7-3 When performing auto-save functions using the standard UPS service
in Windows Server 2003/XP/2000/NT ................................................................................................42
7-4 Contact signal....................................................................................................................................47
8.Using an SNMP/Web card ............................................................................................................................ 53
8-1 Adding an SNMP/Web card ..............................................................................................................53
8-2 SNMP/Web card outline.....................................................................................................................54
9. Extending the backup time ..........................................................................................................................55
9-1 Connecting an additional battery unit (BU100SW/BU150SW only)...................................................55
10. Troubleshooting..........................................................................................................................................56
References .......................................................................................................................................................57
A. Specifications ........................................................................................................................................57
B. Dimensions ............................................................................................................................................58
C. Circuit block diagram ............................................................................................................................59
D. Related products ...................................................................................................................................60
E. List of UPS monitoring software functions .............................................................................................60

BU50SW / BU75SW / BU100SW / BU150SW
iii
: 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 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.
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 weight of this unit is approximately: 13 kg (BU50SW/BU75SW)
15.5 kg (BU100SW)
16.5 kg (BU150SW)
●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 to 120V AC) and 50/60Hz frequency.
●Connecting to a wall outlet (commercial power) with a different voltage or frequency may
result in a fire .
●The unit may fire.
Do not connect devices such as dryers, which have a half-wave rectifier
that allows only half-cycle AC power to flow through.
●Overcurrent may damage the UPS.
Do not connect devices having a half-wave rectifier that allows only half-
cycle AC power to flow through, such as dryers or some solenoid valves.
●Overcurrent may damage the UPS.
Caution (for installation and connection)

Safety precautions
iv
Connect the unit to a wall outlet with the proper current capacity, as
follows: 8A or more (BU50SW), 10A or more (BU75SW), 12A or more
(BU100SW), or 16A or more (BU150SW).
●Otherwise, the power cord may be heated.
●When equipment with the maximum output capacity is connected, a maximum current of
8A (BU50SW), 10A (BU75SW), 12A (BU100SW), or 16A (BU150SW) flows.
Provide secure grounding.
●For a 3P 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.
●When you use a 3P-2P conversion plug for AC input plug, be sure to perform grounding
before connecting the AC input plug into a wall outlet (commercial power).
Do not disconnect the grounding before disconnecting the AC input plug from a wall outlet
(commercial power).
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 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 ex-
posed 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
fi r e .
●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.
Caution (for installation and connection)

BU50SW / BU75SW / BU100SW / BU150SW
v
Caution (for installation and connection)
●This UPS utilizes voltages that may be hazardous. Do not attempt to disassemble the unit
The unit contains no user serviceable parts. Only factory service personnel may perform
repairs.
●Connection to any other type of receptacle other than a two-pole, three-wire grounded re-
ceptacle may result in shock hazard as well as violate local electical codes.
●Do not allow liquids or any foreign object to enter the UPS. DO not place beverages or any
other liquid-containing vessels on or near the unit.
●This unit intended for installation in a controlled environment (temperature controlled, indoor
area free of conductive contaminants).Avoid installing the UPS in locations where there is
standing or running water,or excessive humidity.
●Do not attach a power strip or surge suppressor to the UPS.
●Do not attach non-computer-related items,such as medical equipment,life-support
equipment,microwave ovens,or vacuum cleaners to UPS.
●With the installation of the equipment it should be prevented, that the sum of the leakage
current of the UPS and the connected consumer does not exceed 3.5mA.
Do not block the air vents on the side and rear of the unit.
●Doing so will cause the internal temperature to rise, which may cause the unit to fail and the
battery 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.
●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,
bypass operation is performed and commercial power supply is supplied as is to the con-
nected devices.
When a 15A plug (NEMA5-15P) is used with BU150SW, the maximum
capacity connectable to output is approximately 1100VA/950W.
●Doing so will cause the internal temperature to rise, which may cause the unit to fail and the
battery to deteriorate.
●When the “15A input exceeded” display appears ( or is displayed on the status indi-
cator), replace the input plug with a 20A input plug.
When replacing the input plug for the BU150SW, perform connection
as specified, making sure to properly match the plug terminals with the
appropriate wire colors.
●Refer to “Using a 20A plug” on page 11.
●Failure to do so may result in electric shock or ground fault.
For PLUGGABLE EQUIPMENT, the socket-outlet shall be installer near
the equipment and shall be easily accessible.

Safety precautions
vi
Caution (for use)
Do not allow the unit to come in contact with water.
●Doing so may cause an electric shock or a fire.
●If the unit becomes wet, immediately stop using it, disconnect the AC input plug from the
wall outlet, 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 a fire.
Wipe the AC input plug clean of dirt with a dry cloth occasionally.
●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 abnormal sound or smell, smoke, or leakage from the
inside, immediately turn off the power switch and disconnect the AC
input plug from a wall outlet (commercial power).
●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 re-
pairs.
●Use the unit under the conditions in which you can immediately disconnect the AC input
plug from a wall outlet (commercial power) in the case of an abnormal event.
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.
* The values in the table are the expected life under standard
use conditions and are not guaranteed.
Ambient temperature
20°C
30°C
Expected life
4 to 5 years
2 to 2.5 years

BU50SW / BU75SW / BU100SW / BU150SW
vii
Caution (for maintenance)
When maintaining the connected equipment, turn OFF the power switch
and disconnect the AC input plug.
● Even if you disconnect the AC input plug while the UPS is operating, the power output of
this unit does not stop and power is supplied from the outlet during a power failure.
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 receptacles of the
UPS.
●Doing so may result in electric shock.
Do not insert metal objects into the battery connectors.
●Doing so may result in electric shock.
Caution (for battery replacement)
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.
●Product model: BP70XS (Replacement battery pack for BU50SW/BU75SW)
BP100XS (Replacement battery pack for BU100SW)
BP150XS (Replacement battery pack for BU150SW)
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.

Safety precautions
viii
Caution (for battery replacement)
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.
●A battery can present a risk of electrical shock and high short circuit current.The following
precautions should be observed when working on batteries:
1) Remove watches, rings, or other metal objects from the hands.
2) Use tools with insulated handles.
3) Wear rubber gloves and boots.
4) Do not lay tools or metal parts on top of batteries.
5) Disconnect charging source prior to connecting or disconnecting batteries terminals.
●Servicing of batteries should be performed or supervised by personnel knowledgeable of
batteries and the required precautions. Keep unauthorized personnel away from batteries.

BU50SW / BU75SW / BU100SW / BU150SW
ix
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.
●To charge a battery, connect the AC input plug of the unit to a wall outlet (commercial power).
When storing the unit, charge the battery for at least 8 hours and turn OFF the power
switch.
Recharge the battery for at least 8 hours every 6 months when the storage tempareture is
25
°C
or less, or every 2 months when the storage temperture is 40
°C
or less.
●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.
●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
commercial power supply to another power supply source, such as generating equipment, will cause no
problem.)
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 a withstand voltage test.
●The input circuit has a built-in surge absorption device. A withstand voltage test may break it.
●When performing an insulation resistance test, use the 250V DC range.

Safety precautions
x
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.
Check the operation beforehand if the unit is used in any mode other than “Output
100V mode”.
●In Battery Mode, the maximum voltage (peak voltage) of output (rectangular wave) may be lower than
the maximum voltage in Commercial Power Mode. For this reason, some connected devices may fail to
operate normally.
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.
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.
This unit uses lead acid batteries,
●Which are a valuable recyclable resource. Please recycle.
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 recom-
mend turning OFF the power switch when you do not use connected devices for a long time.
●The battery can be charged once the AC input plug of the unit is connected to a wall outlet (commercial
power).
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 unit stops. After recovery from the power
failure, the unit automatically restarts and supplies power. 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 2can be used to select whether or not auto restart is performed.
Page 25
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 32.

BU50SW / BU75SW / BU100SW / BU150SW
1
1
2
3
4
5
6
7
8
9
10
BU50SW BU75SW BU100SW BU150SW
Instruction manual (Japanese and English versions) 1 1 1 1
Warranty 1 1 1 1
User registration card 1 1 1 1
Label (How to determine operating status) 1 1 1 1
AC input for 20A (NEMA L5-20P) - - - 1
3P-2P conversion plug *1 1 1 1 1
Connector for remote ON/OFF 1 1 1 1
Omron contact info label 1 1 1 1
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
BU50SW BU75SW BU100SW BU150SW
Quick Install Guide 1 1 1 1
CD-ROM 1 1 1 1
Connection cable (RS-232C) 1 1 1 1
Open the package box and take out the UPS and accessories.
The weight of the product is 13 kg (BU50SW/BU75SW) / 15.5 kg (BU100SW)
/16.5 kg (BU150SW).
Unpack/transport this product considering this weight.
●Dropping may cause injury.
Caution
3P-2P conversion
plug
User
registration
card
Label (How to determine
operating status) *1
AC input for 20A
(NEMA L5-20P)
Quick Install
Guide
CD-ROM
Connection cable
(Approx. 2.2 m)
<Accessories related to main unit> <UPS monitoring software>
Instruction
manual
Connector for
remote ON/OFF
OMRON
contact info
label
[BU150SW ONLY]
*1 Do not use 3P-2P conversion plug when the unit is used in compliance with UL standard or CE marking.
1-1 Unpacking the product
Preparation
11
1-2 Checking the contents
Warranty

2
1. Preparation
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 16 that provides the details.
Front view
[ Enlarged view of the display panel ]
Side view
Air inlet
Rear sideFront side
-
バッテリ
交換
バッテリ
増設
ブザー停止/テスト
電源出力
バイパス
運転
BU150SW
<Displaypanel>
A. Status indicator digital display
B. Power switch
C. Beep stop/test switch
D. Battery addition lamp
(BU100SW and BU150SW only)
E. Battery replacement lamp
F. Power supply output lamp
G. Bypass operation lamp
(The input power supply is output as is.)
H. Setting switch cover
I. Connection capacity/battery level meter
A
I
B
C
H
GF E D
1-3 Name of each par

BU50SW / BU75SW / BU100SW / BU150SW
3
1
2
3
4
5
6
7
8
9
10
Rear view
A. RS232C connector
B. Contact signal card
C. Power supply output receptacles
(Backup is performed during power failure.)
D. Grounding terminal
E. AC input overcurrent protection
F. AC input cable
G. Cooling fan (air vent)
H. Remote ON/OFF connector
I. Contact signal connector
RS232C
信号カード
増設
冷却ファン
OUTPUTAC100-120V50/60Hz1ø
出力電力最大1kVA/700W
接地
INPUT
AC100V-120V
50/60Hz
12A
AC入力
過電流保護
15A
バッテリ
増設コネクタ
DC36V/20A
A
E
F
G
H
B
C
D
I
J
RS232C
信号カード
増設
冷却ファン
OUTPUTAC100-120V50/60Hz1ø
出力電力最大1.5kVA/1500W
接地
INPUT
AC100V-120V入力
50/60Hz16A
AC入力
過電流保護
20A
バッテリ増設コネクタ
DC36V/40A
バッテリ増設信号コネクタ
A
F
G
H
I
B
D
C
E
J
K
RS232C
信号カード
増設
冷却ファン
OUTPUTAC100-120V50/60Hz1ø
出力電力最大500VA/350W
接地
INPUT
AC100V-120V
50/60Hz
8A
AC入力
過電流保護
10A
A
D
E
F
G
B H
I
C
<BU50SW/BU75SW>
<BU100SW>
<BU150SW>
A. RS232C connector
B. Contact signal card
C. Additional battery connector
D. Power supply output receptacles
(Backup is performed during power failure.)
E. Grounding terminal
F. AC input overcurrent protection
G. AC input cable
H. Cooling fan (air vent)
I. Remote ON/OFF connector
J. Contact signal connector
A. RS232C connector
B. Contact signal card
C. AC input overcurrent protection
D. AC input cable
E. Power supply output receptacles
(Backup is performed during power failure.)
F. Grounding terminal
G. Additional battery signal connector
H. Additional battery connector
I. Cooling fan (air vent)
J. Remote ON/OFF connector
K. Contact signal connector

4
1. Preparation
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. (For BU100SW,BU150SW only.)
Batteries at end of useful life, necessary to replace the batteries.
1-4 Explanation of symbols used on unit

BU50SW / BU75SW / BU100SW / BU150SW
5
1
2
3
4
5
6
7
8
9
10
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 weight of this unit is approximately: 13 kg (BU50SW/BU75SW)
15.5 kg (BU100SW)
16.5 kg (BU150SW)
●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 to 120V AC) and 50/60Hz frequency.
●Connecting to a wall outlet (commercial power) with a different voltage or frequency may
result in a fire.
●The unit may fail.
Do not connect devices such as dryers, 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 with the proper current capacity, as
follows: 8A or more (BU50SW), 10A or more (BU75SW), 12A or more
(BU100SW), or 16A or more (BU150SW).
●Otherwise, the power cord may be heated.
●When equipment with the maximum output capacity is connected, a maximum current of 8A
(BU50SW), 10A (BU75SW), 12A (BU100SW), or 16A (BU150SW) flows.
Provide secure grounding.
●For a 3P 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.
●When you use a 3P-2P conversion plug for AC input plug, be sure to perform grounding be-
fore connecting the AC input plug into a wall outlet (commercial power).
Do not disconnect the grounding before disconnecting the AC input plug from a wall outlet
(commercial power).
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.
Caution (for installation and connection)
2-1 Precautions and notes on installation and connection
Installation and connection
22

6
2. Installation and Connection
Caution (for installation and connection)
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 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 ex-
posed 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
fi r e .
●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.
●This UPS utilizes voltages that may be hazardous. Do not attempt to disassemble the unit
The unit contains no user serviceable parts.Only factory service personnel may perform
repairs.
●Connection to any other type of receptacle other than a two-pole,three-wire grounded re-
ceptacle may result in shock hazard as well as violate local electical codes.
●Do not allow liquids or any foreign object to enter the UPS. DO not place beverages or any
other liquid-containing vessels on or near the unit.
●This unit intended for installation in a controlled environment (temperature controlled, indoor
area free of conductive contaminants).Avoid installing the UPS in locations where there is
standing or running water,or excessive humidity.
●Do not attach a power strip or surge suppressor to the UPS.
●Do not attach non-computer-related items,such as medical equipment, life-support
equipment,microwave ovens,or vacuum cleaners to UPS.
●With the installation of the equipment it should be prevented, that the sum of the leakage
current of the UPS and the connected consumer does not exceed 3.5mA.
Do not block the air vents on the side and rear of the unit.
●Doing so will cause the internal temperature to rise, which may cause the unit to fail and the
battery to deteriorate.
●Leave at least 5 cm of space between the vent and the wall.

BU50SW / BU75SW / BU100SW / BU150SW
7
1
2
3
4
5
6
7
8
9
10
Caution (for installation and connection)
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,
bypass operation is performed and commercial power supply is supplied as is to the
connected devices.
When a 15A plug (NEMA5-15P) is used with BU150SW, the maximum
capacity connectable to output is approximately 1100VA/950W.
●Doing so will cause the internal temperature to rise, which may cause the unit to fail and the
battery to deteriorate.
●When the “15A input exceeded” display appears ( or is displayed on the status indi-
cator), replace the input plug with a 20A input plug.
When replacing the input plug for the BU150SW, perform connection
as specified, making sure to properly match the plug terminals with the
appropriate wire colors.
●Refer to “Using a 20A plug” on page 11.
●Failure to do so may result in electric shock or ground fault.
For PLUGGABLE EQUIPMENT, the socket-outlet shall be installer near
the equipment and shall be easily accessible.
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.
Recharge the battery for at least 8 hours every 6 months when the storage
tempareture is 25°C or less, or every 2 months when the storage temperture is 40°C
or less.
●If you do not use the unit for a long time after the purchase, the battery may deteriorate and the battery
may become unusable.
●To charge a battery, connect the AC input plug of the unit to a wall outlet (commercial power).
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.
●We recommend keeping the temperature 25°C or less when storing the unit for long periods of time.
●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.