Omron S8BA-24D24D960SBF, S8BA-S960L, S8BA-24D24D480SBF, S8BA-S480L User Manual

Uninterruptible Power Supply (UPS)

Control Unit

Battery Unit

S8BA-24D24D□□□SBF
S8BA-S□□□L

User's Manual

S8BA-24D24D480SBF S8BA-S480L

S8BA-24D24D960SBF S8BA-S960L

Introduction

Thank you for purchasing OMRON's Uninterruptible Power Supply (UPS).

This manual contains information that is necessary to use the “Uninterruptible Power Supply (UPS)”.
Read this manual carefully and make sure that you understand the functionality and performance of the
product before using it in your system.

Keep this manual in a safe place where it will be available for reference during operation.

Intended audience

This manual is intended for:

Personnel with knowledge of electric systems (the level of knowledge an electrical engineer has or its
equivalent) and at the same time

• Personnel in charge of introducing FA systems

• Personnel in charge of designing FA systems

• Personnel in charge of installing and connecting FA systems

• Personnel in charge of managing FA systems and facilities

Introduction

Applicable products

This manual covers the following products:

• Uninterruptible Power Supply (UPS) S8BA Series

• S8BA-24D24D480SBF

• S8BA-24D24D960SBF

• S8BA-S480L

• S8BA-S960L

Important notice

• No part of this manual may be copied, reproduced, or used in any form without our permission.

• Please be informed that the specifications may be changed without prior notice for the purpose of
improving the contents of this manual.

• We have checked the content of this manual and believe it to be accurate. However, if you find any
errors or have any questions, contact our sales personnel.

At that time, give the Man. No. (manual number) in the back of your manual.

Trademarks

• System names and product names indicated in this manual are registered trademarks or trademarks
of their respective owners.

S8BA Series Uninterruptible Power Supply (UPS) User’s Manual (U726)

1

Manual Structure

4-9

4 Installation and Wiring

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4-3 Mounting Units

The Units that make up an NJ-series Controller can be connected simply by pressing the Units together
and locking the sliders by moving them toward the back of the Units. The End Cover is connected in the
same way to the Unit on the far right side of the Controller.

1 Join the Units so that the connectors fit exactly.

2 The yellow sliders at the top and bottom of each Unit lock the Units together. Move the sliders

toward the back of the Units as shown below until they click into place.

Precautions for Correct UsePrecautions for Correct Use

4-3-1 Connecting Controller Components

Connector

Hook

Hook holes

Slider

Lock

Release

Move the sliders toward the back
until they lock into place.

Level 1 heading
Level 2 heading
Level 3 heading

Level 2 heading

A step in a procedure

Manual name

Special information

Level 3 heading

Page tab

Gives the current
headings.

Indicates a procedure.

Icons indicate
precautions, additional
information, or reference
information.

Gives the numbe
of the main sectio

The sliders on the tops and bottoms of the Power Supply Unit, CPU Unit, I/O Units, Special I/O
Units, and CPU Bus Units must be completely locked (until they click into place) after connecting
the adjacent Unit connectors.

Manual Structure

Page Structure and Icons

The following page structure and icons are used in this manual.

Note This illustration is provided only as a sample. It may not literally appear in this manual.

2

S8BA Series Uninterruptible Power Supply (UPS) User’s Manual (U726)

Precautions for Safe Use

Precautions for Correct Use

Additional Information

Special Information

Special information in this manual is classified as follows:

Precautions on what to do and what not to do to ensure safe usage of the product.

Indicates the items to be implemented or avoided when the product is not operating, or to pre­vent a negative impact on the performance and functions.

Additional information to read as required.

This information is provided to increase understanding or make operation easier.

Manual Structure

References are provided to more detailed or related information.

Points to be Considered Regarding Notations

In this manual, the control unit and battery unit are collectively specified as the "UPS".

The same holds true when "the unit" or "this product" is specified.

Moreover, if the control unit and battery unit are to be indicated individually, they are respectively spec­ified as the "control unit" and "battery unit".

S8BA Series Uninterruptible Power Supply (UPS) User’s Manual (U726)

3

Manual Structure

4

S8BA Series Uninterruptible Power Supply (UPS) User’s Manual (U726)

1A

2

3

4

5

6

7

8

1A

2

3

4

5

6

7

8

9

Overview of the product

Preparation

Appendix

I

Installation and connection

Operations

Maintenance and inspection

Using the I/O signal functions

To perform shutdown processing of the devices when a
power failure occurs

Troubleshooting

Table of Contents

Table of Contents

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

5

CONTENTS

CONTENTS

Introduction .............................................................................................................. 1

Manual Structure...................................................................................................... 2

Table of Contents..................................................................................................... 5

Terms and Conditions Agreement ......................................................................... 8

Safety precautions................................................................................................. 10

Regulations and standards................................................................................... 17

Revision History..................................................................................................... 19

Section 1 Overview of the product

1-1 Features of this product ....................................................................................................... 1-2

1-2 Specifications ........................................................................................................................ 1-3

1-3 Procedure from installation to operation ............................................................................ 1-5

Section 2 Preparation

2-1 Unpacking the product ......................................................................................................... 2-2

2-2 Checking the contents .......................................................................................................... 2-3

2-3 Name of each part ................................................................................................................. 2-4

2-4 Diagram of the Input/output circuit block ........................................................................... 2-6

Section 3 Installation and connection

3-1 Installation.............................................................................................................................. 3-2

3-1-1 DIN rail installation...................................................................................................................... 3-4

3-2 Connection............................................................................................................................. 3-5

3-2-1 UPS connection order................................................................................................................. 3-5

3-2-2 Connecting the UPS control unit and battery unit with a battery connection cable .................... 3-6

3-2-3 Connecting a device to the output terminal block ....................................................................... 3-8

3-2-4 Connecting the input power supply to the input terminal block................................................... 3-8

3-2-5 Connecting a cable to the battery terminal block, input terminal block and output terminal block....

3-9

Section 4 Operations

4-1 Checking the operation......................................................................................................... 4-2

4-1-1 LED display................................................................................................................................. 4-2

4-1-2 Backup operation time setting / Battery replacement mode selection switch ............................. 4-5

4-2 Start and stop procedures and basic operation................................................................. 4-6

4-2-1 Start and stop procedures........................................................................................................... 4-6

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S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

CONTENTS

Section 5 Maintenance and inspection

5-1 Inspecting the battery ........................................................................................................... 5-2

5-1-1 Expectancy of the battery ........................................................................................................... 5-2

5-1-2 Estimated backup time ............................................................................................................... 5-2

5-2 Replacing the battery unit .................................................................................................... 5-4

5-2-1 Notification that the battery unit needs to be replaced................................................................ 5-4

5-2-2 Procedure for replacing the battery unit...................................................................................... 5-6

5-3 Cleaning the Unit ................................................................................................................... 5-9

Section 6 To perform shutdown processing of the devices when a

power failure occurs

6-1 The outline on the UPS monitoring software...................................................................... 6-2

6-1-1 UPS monitoring software............................................................................................................ 6-2

6-1-2 How to connect........................................................................................................................... 6-2

Section 7 Using the I/O signal functions

7-1 I/O signal functions ............................................................................................................... 7-2

7-1-1 Type of output signals................................................................................................................. 7-2

7-1-2 Type of input signals................................................................................................................... 7-2

7-1-3 CONTACT port (RJ45 connector)............................................................................................... 7-3

7-1-4 Contact signal ratings ................................................................................................................. 7-3

7-1-5 Contact signal circuit................................................................................................................... 7-3

7-1-6 Precautions and notes for the use of the I/O signal functions .................................................... 7-4

7-1-7 Example of the use of the Contact Signal circuit ........................................................................ 7-4

Section 8 Troubleshooting

8-1 Troubleshooting .................................................................................................................... 8-2

Appendix

A-1 Dimensions ............................................................................................................................A-2

A-2 Characteristic data ................................................................................................................A-5

A-2-1 Derating curve ............................................................................................................................A-5

A-2-2 Overcurrent protection curve ......................................................................................................A-6

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

7

Terms and Conditions Agreement

Terms and Conditions Agreement

Warranty, Limitations of Liability

Warranties

z Exclusive Warranty

Omron’s exclusive warranty is that the Products will be free from defects in materials and workman­ship for a period of twelve months from the date of sale by Omron (or such other period expressed in
writing by Omron). Omron disclaims all other warranties, express or implied.

z Limitations

OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, ABOUT
NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OF
THE PRODUCTS. BUYER ACKNOWLEDGES THAT IT ALONE HAS DETERMINED THAT THE
PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE.

Omron further disclaims all warranties and responsibility of any type for claims or expenses based
on infringement by the Products or otherwise of any intellectual property right.

z Buyer Remedy

Omron’s sole obligation hereunder shall be, at Omron’s election, to (i) replace (in the form originally
shipped with Buyer responsible for labor charges for removal or replacement thereof) the non-com­plying Product, (ii) repair the non-complying Product, or (iii) repay or credit Buyer an amount equal
to the purchase price of the non-complying Product; provided that in no event shall Omron be
responsible for warranty, repair, indemnity or any other claims or expenses regarding the Products
unless Omron’s analysis confirms that the Products were properly handled, stored, installed and
maintained and not subject to contamination, abuse, misuse or inappropriate modification. Return of
any Products by Buyer must be approved in writing by Omron before shipment. Omron Companies
shall not be liable for the suitability or unsuitability or the results from the use of Products in combi­nation with any electrical or electronic components, circuits, system assemblies or any other materi­als or substances or environments. Any advice, recommendations or information given orally or in
writing, are not to be construed as an amendment or addition to the above warranty.

See http://www.omron.com/global/ or contact your Omron representative for published information.

Limitation on Liability; Etc

OMRON COMPANIES SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT, INCIDENTAL, OR CON­SEQUENTIAL DAMAGES, LOSS OF PROFITS OR PRODUCTION OR COMMERCIAL LOSS IN ANY
WAY CONNECTED WITH THE PRODUCTS, WHETHER SUCH CLAIM IS BASED IN CONTRACT,
WARRANTY, NEGLIGENCE OR STRICT LIABILITY.

Further, in no event shall liability of Omron Companies exceed the individual price of the Product on
which liability is asserted.

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S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

Application Considerations

Suitability of Use

Omron Companies shall not be responsible for conformity with any standards, codes or regulations
which apply to the combination of the Product in the Buyer’s application or use of the Product. At
Buyer’s request, Omron will provide applicable third party certification documents identifying ratings
and limitations of use which apply to the Product. This information by itself is not sufficient for a com­plete determination of the suitability of the Product in combination with the end product, machine, sys­tem, or other application or use. Buyer shall be solely responsible for determining appropriateness of
the particular Product with respect to Buyer’s application, product or system. Buyer shall take applica­tion responsibility in all cases.

NEVER USE THE PRODUCT FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR
PROPERTY OR IN LARGE QUANTITIES WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE
HAS BEEN DESIGNED TO ADDRESS THE RISKS, AND THAT THE OMRON PRODUCT(S) IS
PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIP­MENT OR SYSTEM.

Terms and Conditions Agreement

Programmable Products

Omron Companies shall not be responsible for the user’s programming of a programmable Product, or
any consequence thereof.

Disclaimers

Performance Data

Data presented in Omron Company websites, catalogs and other materials is provided as a guide for
the user in determining suitability and does not constitute a warranty. It may represent the result of
Omron’s test conditions, and the user must correlate it to actual application requirements. Actual perfor­mance is subject to the Omron’s Warranty and Limitations of Liability.

Change in Specifications

Product specifications and accessories may be changed at any time based on improvements and other
reasons. It is our practice to change part numbers when published ratings or features are changed, or
when significant construction changes are made. However, some specifications of the Product may be
changed without any notice. When in doubt, special part numbers may be assigned to fix or establish
key specifications for your application. Please consult with your Omron’s representative at any time to
confirm actual specifications of purchased Product.

Errors and Omissions

Information presented by Omron Companies has been checked and is believed to be accurate; how­ever, no responsibility is assumed for clerical, typographical or proofreading errors or omissions.

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

9

Safety precautions

WARNING

Caution

If you fail to use the product properly, it may result in injuries, mild
or moderate, and may lead to death. Additionally, there may be
severe property damage.

If you fail to use the product properly, it may result in injuries, mild
or moderate, or damage on property.

Safety precautions

Important information for safe operation is described.

Be sure to read it before installation and start of use.

The safety symbols and their meaning used in this manual are as follows:

*Property damage means damage to houses/household effects, livestock, and pets.

●Meaning of graphical symbols

●General inhibition

Notice prohibiting an unspecified general action.

●General instruction

Notice instructing an unspecified general action.

●Do-not-disassemble prohibition

Notice prohibiting disassembly.

Disassembling the unit may lead to electric shock or other accidents.

●Prohibition of use in locations subject to water such as a bathroom and
shower room.

Notice prohibiting exposure to water.

Using a unit without waterproofing in locations subject to water may
result in accidents due to electric shock.

●Do-not-touch prohibition

Notice prohibiting touching.

Under specific conditions, touching the unit at specific locations could
result in accidents.

Note that events categorized as a caution required matter also may cause more serious results under
certain conditions.

10

The information described here is very important and must be strictly observed.

●Explosion alert

Notice alerting the user to the possibility of explosion under certain con­ditions.

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

Warning

WARNING

Caution

For use of this product

• Provide safety measures outside the UPS to ensure safety in the entire system even if
the UPS is damaged or an abnormality occurs due to an external factor. Not doing so
may result in serious accidents due to incorrect operation.

Wiring

Do not short between the connector terminals.

• Doing so may result in electric shock.

• The battery unit's protection board may be damaged due to a short-circuit.

• Connect each connection cable to the correct connected device.

• Connect the terminal of each connection cable to the connector port with correct polarity.

• Be sure to follow the connection procedure described in 3-2-2 Connecting the UPS con-
trol unit and battery unit with a battery connection cable on page 3-6.

Safety precautions

When the Battery Unit is Replaced

Dispose of or collect (recycle) the battery unit according to your own rules set for that pur­pose or as instructed by laws and regulations.

• Do not dispose of it in fire. Otherwise, it could explode.

Caution

For installation and connection

Pay attention to the weight and balance when carrying the unit, and install it in a solid and
stable location.

• Do not drop the battery unit and do not expose it to strong impact. Dropping the unit may

• If you drop the unit, have it inspected and repaired. For repairs, contact our sales person-

Keep plastic package bags out of reach of children.

• Children may suffocate if they place their heads into plastic bags.

result in injury or fire.

nel.

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

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Safety precautions

• Voltage range: 23 to 28 V DC

Be sure to connect the input power supply of the unit to a DC power supply device having a
rated voltage (24 VDC), or a battery power feed system.

• The input voltage ranges for the UPS are as shown below. Check that the output voltage
of the DC power supply device connected to the input terminal of the UPS is within any of
the voltage ranges below.

• Connecting to a DC or AC power supply device with a different voltage may result in mal­function in or damage to the UPS, or cause a fire.

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.

To make an emergency stop, turn the rotary switch to "BATT REP" and turn off the input
power after the LED changes from fast blinking to slow blinking.

• When performing maintenance on the connected devices, follow the above instructions
to ensure safety.

When installing the input cable, make sure to perform the connection as specified.

Make sure to stop the primary power supply before connecting the unit to the input power
supply terminal.

• When connecting a cable to the terminal block, use a cable that complies with the input
current specification of the UPS. Failure to do so may result in electric shock or ground
fault.

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 internal temperature may
rise, eventually damaging the UPS or deteriorating the battery.

Do not use the unit at a location where the operating environment temperature is more than
55°C.

• The battery deteriorates rapidly. It may result in fire.

• If the battery's resin separator is damaged, the battery may be short-circuited inside, and
may cause an abnormal heating, smoke, rupture or 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 55°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 flammable 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 fire.

When you use plug strip and other plugs to connect additional devices, do not connect
devices that exceed the current capacity of the available plugs.

• The current protection of the unit may operate, which may stop the output.

• The cable heats up, which may cause a fire.

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S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

Safety precautions

Ambient
tempera­ture

Expected
life

*The values in the table are the expected
life under standard use conditions and

are not guaranteed.
25°C 10 years
35°C 6.7 years
45°C 3.7 years
55°C 1.9 years

Do not use a cable with damaged insulation.

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 our sales personnel.

Do not connect any devices other than rated voltage is 24 VDC.

• The rated output voltage of this unit is 24 VDC.

• Overvoltage or overcurrent may damage the connected devices.

• The output voltage range is 22 to 30 VDC.

All of the included accessories are designed to be used with the unit. Do not use the acces­sories with other devices.

• Doing so may compromise the safety of devices.

When this product is used in compliance with CE marking, please use under 2 m communi­cation cable.

Do not block the air vents (upper and lower).

• Doing so will cause the internal temperature to rise, which may cause the unit to fail and
the battery to deteriorate.

• During installation, leave a space of 50 mm or more above the top and below the bottom.

Do not connect the RS232C/USB port or the CONTACT port to a LAN device using a LAN
cable.

• Connection to a LAN device may result in malfunction in or damage to the UPS or the
LAN device.

Do not run this unit in parallel.

• Operating this unit in parallel may cause a failure or malfunction.

For use

Do not allow the unit to come in contact with water.

• Doing so may cause an electric shock or a fire.

• Doing so may cause an abnormal heating, smoke, rupture, or fire on the battery.

• If the unit comes in contact with water, immediately stop using it and have it inspected
and repaired. To make an emergency stop, turn the rotary switch to "BATT REP" and turn
off the input power after the LED changes from fast blinking to slow blinking.

• For repair, contact our sales personnel.

When the battery unit is dead, replace it immediately or stop using the unit.

• Continuing the use of it may cause fire or electric shock due to liquid leaks.

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

13

Safety precautions

Occasionally, wipe off dust on the input terminal block and the output terminal block with a
dry cloth.

• Accumulated dust may cause a fire.

Before wiping off dust, stop all connected devices and the unit, and stop the supply of com­mercial power.
The unit will stop after 30 seconds of setting the mode selection/backup operation time
selection switch to "0.5".

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 something unusual such as abnormal sound or smell, discoloration, deforma­tion, and heating, turn OFF the unit's power and stop the supply from the input power sup­ply.
To make an emergency stop, turn the rotary switch to "BATT REP" and turn off the input
power after the LED changes from fast blinking to slow blinking.

• Using the unit under such conditions may cause an abnormal heating, rupture or fire.

• If you notice such a condition, stop using the unit and contact our sales personnel for
inspection and repairs.

If fluid leaks from the interior, 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. The fluid may damage your eye if your eye is left untreated.

Do not place any objects 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 unit is equipped with an output circuit that can supply power to the connected devices
even if the unit stops due to a failure or mis-operation of the internal circuit function.

If you want to stop the output, stop the source of the “input power supply”.

• Output is continuing even when all indicators of the front panel are off.

When charging the battery, if the battery cannot be charged completely even after the pre­determined charging time, turn OFF the "Power" switch of the unit to stop charging the bat­tery.
The unit will stop after 30 seconds of setting the mode selection/backup operation time
selection switch to "0.5".

• Otherwise, it may cause an abnormal heating, smoke, rupture or fire on the battery.

14

For maintenance

When performing maintenance of the connected equipment, turn OFF the unit's power and
stop the supply from the input power supply.

The unit will stop after 30 seconds of setting the mode selection/backup operation time
selection switch to "0.5".

• Even if the input power supply is stopped in the operating state, the power supply output
of the unit will not stop, and power will be supplied from the battery.

Do not disassemble, repair, or modify the unit.

• Doing so may cause an electric shock or a fire.

If fluid leaks from the interior, 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.

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

Do not throw the unit into fire.

• Since the battery is incorporated in the unit, the insulator may melt, the gas exhaust valve

or protection mechanism may be damaged, or the electrolyte may catch fire, and it may
result eventually in an abnormal heating, smoke, rupture or fire.

Do not insert metal objects into the input terminal block and the output terminal block of the
UPS.

• Doing so may result in electric shock.

Do not insert metal objects into the battery connectors. Do not short between the connector
terminals.

• Doing so may result in electric shock.

• The battery unit's protection board may be damaged due to a short-circuit.

When the Battery Unit is Replaced

Do not use other than the designated battery unit.

• Not doing so may cause a fire.

• Product model: S8BA-S480L, S8BA-S960L
Do not replace the battery unit in a place where there is flammable gas.

• Spark may occur when connecting the battery unit, which may cause an explosion or fire.

Safety precautions

If fluid leaks from the battery 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 disassemble or modify the battery unit.

• A safety mechanism and protection mechanism to prevent danger are embedded into the

battery unit. If these are damaged, it may cause the battery to emit heat, smoke, explode,
or catch fire.

Do not drop the battery unit and do not expose it to strong impact.

Dropping the unit may result in injury or fire.

• Doing so may cause a leakage, abnormal heating, smoke, rupture or fire on the battery

unit. And, if the battery unit's protection mechanism is broken, the battery may be
charged at an abnormal current or voltage, an abnormal chemical reaction may occur
inside the battery, and it may result eventually in an abnormal heating, smoke, rupture or
fire.

Do not short the battery unit with metal objects.

• Doing so could cause an electric shock, fire or burn.

• Some electrical energy still remains inside the spent battery unit.
Do not dispose of battery units in a fire.

• The insulator inside the battery unit may melt, the gas exhaust valve or protection mech-

anism may be damaged, or the electrolyte may catch fire, and it may result eventually in
abnormal heating, smoke, rupture or fire.

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

15

Safety precautions

Important Safety Points

■ Before using

• The battery has not been charged at the time of purchase. Be sure to charge it before use.

• Connect this unit to the input power supply to charge the battery unit.

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.

Take measures for handling unforeseen accidents, such as data backup and system redundancy.

• The output may stop when there is failure in this unit.

■ Connecting

Do not short the unit output lines together, and do not short the battery connection cable (to ground).

• The unit may fail.

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. If this manual is misplaced, download the manual from our
website.

■ Using

Before stopping the commercial power to the unit, turn OFF the “Power” switch of the unit.

The unit will stop after 30 seconds of setting the mode selection/backup operation time selection switch to
"0.5".

• The unit enters Battery Mode when input power supply is stopped.

• If the frequency of backup operation becomes high, the battery life may be significantly reduced.

Do not use for an application that frequently requires Battery Mode.

• The battery unit will deteriorate and fail to maintain the specified backup time.

If you want the UPS to stand by in a UPS startup state, set 3 months or less for the input power supply
stop period.

• The UPS startup state means the state of waiting for startup triggered by a remote ON/OFF or BS sig­nal.

• If the UPS is left unused in the above state for 3 months or longer, the battery goes into overdischarge
state, and the backup time may become shorter or the battery may become unusable.

■ Storing

Storing the battery in UPS for a long term, store at an environment less than 25°C and recharge 15 to 30
minutes the battery within 1 year.

• The battery self-discharges even when it not being used, and it goes into overdischarge 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 when storing it.

Do not install or store the unit in a place exposed to direct sunlight.

• The rise of temperature may cause the battery unit to deteriorate rapidly and become unusable.

16

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

Regulations and standards

Use overseas

To export (or provide to non-residents of Japan) a model of this product that is categorized as a mer­chandise (or technology) requiring the export permission and approval stipulated by the Foreign
Exchange and Foreign Trade Law, the export permission and approval (or service transaction permis­sion) in accordance with the said law are required.

Conformance to each Directive

z Applicable directives

• EMC Directives

Regulations and standards

z Principles regarding conformance

OMRON electronic devices that comply with EC Directives also conform to the related EMC stan­dards so that they can be more easily built into other devices or the overall machine. The actual

*

products have been checked for conformity to EMC standards

Whether the products conform to the standards in the system used by the customer, however, must
be checked by the customer. EMC-related performance of the OMRON devices that comply with EC
Directives will vary depending on the configuration, wiring, and other conditions of the equipment or
control panel on which the OMRON devices are installed. The customer must, therefore, perform
the final check to confirm that devices and the overall machine conform to EMC standards.

*1. Applicable EMC (Electromagnetic Compatibility) standards are as follows: EMS (Electromagnetic Susceptibil-

ity): EN 61000-6-2, EMI (Electromagnetic Interference): EN 61000-6-4, and EN 61000-6-4 Radiated emis­sion: 10-m regulations

.

z Conformance to EC Directives

This product complies with EC Directives. To ensure that the machine or device in which the this
product is used complies with EC Directives, the product must be installed as follows:

• This product must be installed within a control panel.

• You must use reinforced insulation or double insulation for the direct power supply equipment
connected to this product.

• Models of this product that comply with EC Directives also conform to the Common Emission
Standard. Radiated emission characteristics (10-m regulations), in particular, may vary depending
on the configuration of the control panel used, other devices connected to the control panel, wir­ing, and other conditions. Therefore, even when using a model of this product that complies with
EC Directives, you must confirm and ensure the compliance to EC Directives of the entire
machine or equipment.

• This is a Class A product (for industrial environments). In a residential environment, it may cause
radio interference. If radio interference occurs, the user may be required to take appropriate mea­sures.

z Conformance to UL

• This product must be installed within a control panel with an internal heater or other unit to protect
against the formation of condensation (Standard mounting only).

• Gaps in the door to the control panel must be completely filled or covered with gaskets or other
material.

• For use in Pollution Degree 2 Environment.

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

17

Regulations and standards

Precautions for Safe Use

• Surrounding Air Temperature, 55°C.

• Make sure to connect the device with Class 2 output to the USB port.

z Conformance to FCC

• FCC CAUTION

Changes or modifications not expressly approved by the party responsible for compliance could
void the user’s authority to operate the equipment.

This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protec­tion against harmful interference when the equipment is operated in a commercial environment.
This equipment generates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the interference at his own
expense.

18

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

Revision History

A manual revision code appears as a suffix to the catalog number on the front and back covers of the
manual.

Revision History

U726-E1-01

Revision code

Revision

code

01 March 2018 Original production

Date Revised content

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

19

Revision History

20

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

3

Overview of the product

This section describes the characteristics and specifications of the product.

1-1 Features of this product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

1-2 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

1-3 Procedure from installation to operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

1

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

1 - 1

1 Overview of the product

1-1 Features of this product

• The Uninterruptible Power Supply (UPS) protects such devices as PLC and IPC* from power failures,
voltage variations, and instantaneous voltage drops.

• Under normal conditions, the UPS outputs 24 VDC of electrical power from the DC power supply
as-is. When an abnormality is detected in the 24 VDC power supply such as a power failure and volt­age variation, the UPS switches to battery supply to continue to provide 24 VDC of electrical power.

• For the specifications of PLC and IPC for power supply input and operation in the event of momen­tary power interruptions, check the respective manuals.

*IPC: Industrial PC (Industrial use computer)

List of models

The product has the following models:

Unit model Specifications

S8BA-24D24D480SBF Control unit (480 W)
S8BA-24D24D960SBF Control unit (960 W)
S8BA-S480L Battery unit (for 480 W)
S8BA-S960L Battery unit (for 480 W / 960 W)

Note The control unit (960 W) and battery unit (480 W) cannot be connected.

1 - 2

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

1-2 Specifications

1 Overview of the product

Description Capacity 480 W 960 W

DC input Rated input voltage 24 VDC

Input voltage range 23 to 28 VDC
Input maxi­mum current

Input terminal Push-in terminal block
Input protection Fuse (cannot be replaced by the customer)
Input protection capacity 30 A 60 A

DC output Rated cur-

rent
Switching time Uninterrupted
Output volt-

age

Output terminal Push-in positive terminal block
Overload
protection

Battery unit Type Lithium-ion battery

Rated voltage 25.2 VDC
Rated capacity 3900 mAh 7800 mAh
Battery life expectancy 10 years (25°C), 6.7 years (35°C), 3.7 years (45°C), 1.9 years

Replacement by user Yes (Hot swapping)
Battery Life Counter Function Yes
Charging time

Backup time (25°C, initial characteristics) 6 min. (constant power rated load)

for rated input voltage

for rated loads connected

for rated output voltage 20 A 40 A

Normal operation Input voltage through output 22 to 30 VDC
Backup operation 21 to 28 V (the voltage cannot be adjusted)

Warning display

• UPS output will continue
through bypass [during
normal operation]

• UPS output will continue
through battery [during
backup operation]

Output stopped by over­load protection

• Stop output [during nor­mal operation]

• The internal power sup­ply to the UPS will stop
after 10 sec. [during
backup operation]

Warning display cancella­tion

(During normal operation,
during backup operation)

21.5 A 43.5 A

101% or more

111% or more

93% or more

(55°C)

8 hours (90%)

The backup time can be set from the mode selection / backup
operation time selection switch, or the shutdown software.

*1

1

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

1 - 3

1 Overview of the product

Description Capacity 480 W 960 W

Structure Dimensions (W×H×D mm) 44 × 124 × 111.4 (UPS control

unit 20 A)

80 × 124 × 111.4 (battery unit
20 A)

Weight Weight of control unit Approx. 0.6 kg Approx. 0.7 kg

Weight of battery unit Approx. 1.5 kg Approx. 2.5 kg

Cooling method Natural cooling

Environment Operating environment temperature /

0°C to 55°C / 10% to 90%RH with no condensation
humidity
Storage environment temperature /

−20°C to 55°C / 10% to 90%RH with no condensation

humidity
Vibration resistance JIS C 60068-2-6 compliant

5 to 8.4Hz amplitude: 3.5mm, 8.4 to 150Hz

acceleration rate: 9.8m/s

2

(Sweep time: 10min.×Sweep count 10 times=Total: 100min.)
Shock resistance

JIS C 60068-2-27 compliant: 147m/s

three times

Dielectric
breakdown
voltage

Standard
compliance

Withstand voltage DC external terminals to casing: 510 V AC, 1 minute, leakage

current 5 mA max.
Insulation resistance DC external terminals to casing: 20 MΩ or more. (500 V DC)
Safety standard UL508 / CE / C22.2 No.107.1-01
EMI Radiation disturbance

EN61000-6-4 / FCC / ICES / RCM

field strength

Internal power consumption (normal*2 / maximum)
Serial com-

munication

RS232C (Interface terminal) Yes (RJ45)
USB (Interface terminal)

7 W / 29 W 15 W / 58 W

I/O signal (Interface terminal) Yes (RJ45)

*1. When using in an environment at a high temperature, charging may be paused by charging temperature protection, then

the charging time will be longer than specified time.

*2. Conditions: With rated loads connected, at a rated input voltage, and at a full battery charge.

52 × 124 × 111.4 (UPS control
unit 40 A)

150 × 124 × 111.4 (battery unit
40 A)

X, Y, and Z directions: 100min.

2

X, Y, and Z directions

1 - 4

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

1 Overview of the product

Start

Read “Safety Precautions”

Page 10

Remove the product from the

package and check the contents

2. Preparation

Perform installation and connection

3. Installation and connection

Are you using either of the
following functions?

- Automatic shutdown software

- I/O signal functions

6. To perform shutdown processing of the

devices when a power failure occurs

7. Using the I/O signal functions

Check the operation

4. Operations

Operate

4. Operations

Perform maintenance and inspection

5. Maintenance and Inspection

Replace the battery unit

5.2 Replacing the battery

The battery unit must

be replaced

Installation/connection

Preparation for operation

Operate

Perform maintenance

and inspection

Yes

No

No

Yes

1-3 Procedure from installation to operation

The procedure from installation to operation is shown below.

1

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

1 - 5

1 Overview of the product

1 - 6

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

Preparation

This section describes the preparations for using the product.

2-1 Unpacking the product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2-2 Checking the contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

2-3 Name of each part . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

2-4 Diagram of the Input/output circuit block . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

2

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

2 - 1

2 Preparation

Caution

2-1 Unpacking the product

Open the package box and take out the control unit, battery unit, and accessories.

Carry the unit considering its weight and balance, and place it on a stable and robust base.

• If you drop the unit, the protection mechanism inside the battery unit may be broken, and
it may result eventually in a fluid leak, abnormal heating, smoke, rupture, or fire.

• If you drop the unit, have it inspected and repaired.

• For repair, contact our sales personnel.

2 - 2

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

2-2 Checking the contents

Instruction manual
Compliance information sheet

USB cable (2.2 m)

Instruction manual

Battery communication cable

Connection cable

(RS232C)

Connection cable

(CONTACT)

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 our sales personnel.

Accessories related to the control unit

Description Quantity

Instruction manual 1
Compliance information sheet 1
USB cable (2.2 m) 1

2 Preparation

2

Accessories related to the battery unit

Description Quantity

Instruction manual 1
Compliance information sheet 1
Battery communication cable 1

Related products

Description Model Length

Communication cable (male for RS232C port) S8BW-C01 2 m
Communication cable (for CONTACT port) S8BW-C02 2 m

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

2 - 3

2 Preparation

(1)

(2)

(3)

(4)

(5)

(7)

(8)

(6)

(3)

(6)

Positive terminal

[DC ON] LED
[BATT] LED

[ALERT] LED

Negative terminal

(1) DC input terminal block
(2) DC output terminal block
(3) Battery connection terminal block
(4) LED indicators

(5) CONTACT port

(7) Mode selection / Backup time setting switch

(6) Battery communication port

(8) RS232C/USB port

2-3 Name of each part

This section describes the name of each part of the UPS.

For information on the function of each part, refer to Section 3 Installation and connection and Section 4
Operations that provide the details.

Front view

z S8BA-24D24D480SBF z S8BA-S480L

z S8BA-24D24D960SBF z S8BA-S960L

Positive terminal

(1)

Negative terminal

[DC ON] LED
[BATT] LED

(4)

[ALERT] LED

(5)

(2)

(3)

(6)
(7)

(8)

(1) DC input terminal block
(2) DC output terminal block
(3) Battery connection terminal block
(4) LED indicators

(6)

(3)

(5) CONTACT port
(6) Battery communication port
(7) Mode selection / Backup time setting switch
(8) RS232C/USB port

2 - 4

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

Rear view

(9)

(9) DIN rail stopper

(9)

(9)

(9) DIN rail stopper

(9)

z S8BA-24D24D480SBF z S8BA-S480L

2 Preparation

2

z S8BA-24D24D960SBF z S8BA-S960L

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

2 - 5

2 Preparation

2-4 Diagram of the Input/output circuit

block

Control unit

24 VDC

Input

Battery unit

Note 1. In normal operation, 24 VDC is output as-is for charging the battery and from the input power supply.

If the 24 VDC from the input power supply becomes lower, the operation automatically switches to
backup operation, and 24 VDC is output from the battery.

FET

Normal operation: ON

Backup operation: OFF

FETCharge

Normal operation: ON

Backup operation: OFF

Normal operation: OFF

Backup operation: ON

FET

Battery

Normal operation

Backup operation

24 VDC

Output

2 - 6

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

Installation and connection

This section describes how to install and connect the product.

3-1 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

3-1-1 DIN rail installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

3-2 Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

3-2-1 UPS connection order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

3-2-2 Connecting the UPS control unit and battery unit with a battery connection cable .

3-6

3-2-3 Connecting a device to the output terminal block . . . . . . . . . . . . . . . . . . . . . . . 3-8

3-2-4 Connecting the input power supply to the input terminal block . . . . . . . . . . . . . 3-8

3-2-5 Connecting a cable to the battery terminal block, input terminal block and output

terminal block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

3

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

3 - 1

3 Installation and connection

Precautions for Safe Use

Leave 50 mm of space between the upper and lower.

Leave 50 mm of space between the upper and lower.

3-1 Installation

This section describes how to install the UPS.

For details on the precautions during installation, refer to For installation and connection on page 11.

The UPS permits the following installing methods. Choose the one best suited for the environment.

Before installing this device, make a record of the serial number of this device.

The product serial number is required when contacting us about the device.

The product serial number is written on the sticker attached to the side of the UPS.

Correct positions

Note 1. This UPS can be mounted with the sides in close contact.

Up to 3 units can be mounted in close contact.
Follow the derating curve during mounting with the sides in close contact. For details, refer to A-2 Char-
acteristic data on page A-5.

2. When you install devices other than the UPS on the left or the right of the UPS, leave a space of at least
15 mm.

3 - 2

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

Incorrect positions

Bottom mounting

Mount UPS upside down

DIN rail is placed vertically

Reverse the left/right positions
of the battery unit and control unit

Stack the units

3 Installation and connection

3

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

3 - 3

3 Installation and connection

Additional Information

A

B

DIN rail

DIN rail

C

Rail stopper

3-1-1 DIN rail installation

1 Lower the rail stopper until you hear a click, and hook part A on one end of the rail.

2 Push the rail stopper in the B direction, and then raise and lock it.

When removing, insert the flat blade screwdriver in the C part and pull it out.

3 - 4

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

3-2 Connection

This section describes how to connect the UPS.

For details on the precautions during connection, refer to For installation and connection on page 11.

3 Installation and connection

3-2-1 UPS connection order

Connections to the UPS must be made in the following order:

1 Connect the control unit and the battery unit with a battery connection cable.

Connecting the UPS control unit and battery unit with a battery connection cable on page 6

2 Connect the cables to be connected to the input terminal block and output terminal block at the

control unit side.
Connecting a cable to the battery terminal block, input terminal block and output terminal block
on page 9

3 Connect the UPS to the devices on the output terminal block.

Connecting a device to the output terminal block on page 8

4 Connect the UPS to the input power supply on the input terminal block.

Connecting the input power supply to the input terminal block on page 8

Note Sparks or noise may occur when connecting the UPS. This is not abnormal.

3

3-2-1 UPS connection order

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

3 - 5

3 Installation and connection

3-2-2 Connecting the UPS control unit and battery unit with a battery

connection cable

1 Install the UPS control unit and battery unit on a DIN rail.

For details, refer to 3-1-1 DIN rail installation on page 3-4.

2 Insert the cables in the UPS control unit and battery unit in the following order:

For details about connecting the cables to the terminal block, refer to 3-2-5 Connecting a cable
to the battery terminal block, input terminal block and output terminal block on page 3-9.

(1) Battery connection cable UPS control unitPositive side

(2) Battery connection cable Battery unit sidePositive side

(3) Battery connection cable UPS control unitNegative side

(4) Battery connection cable Battery unit sideNegative side

3 - 6

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

3 Installation and connection

(5) Battery communication cable UPS control unit side

3

(6) Battery communication cable Battery unit side

3 Connect devices you want to back up to the output terminal block of the control unit.

4 Connect the DC power supply device to the input terminal block of the control unit.

3-2-2 Connecting the UPS control unit and battery unit with a battery connection cable

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

3 - 7

3 Installation and connection

3-2-3 Connecting a device to the output terminal block

1 Connect devices you want to back up to output terminals of this unit.

For details about connecting the cables to the terminal block, refer to 3-2-5 Connecting a cable
to the battery terminal block, input terminal block and output terminal block on page 3-9.

DC power supply device

(24 VDC)

Connected deviceUPS

2 When using the UPS monitoring software or the I/O signal, connect the unit to the target device

with a connection cable.

For details on the connection method, refer to Section 6 To perform shutdown processing of the
devices when a power failure occurs and Section 7 Using the I/O signal functions.

3-2-4 Connecting the input power supply to the input terminal block

1 Connect an input cable to the input terminal block of the unit.

For details about connecting the cables to the terminal block, refer to 3-2-5 Connecting a cable
to the battery terminal block, input terminal block and output terminal block on page 3-9.

2 Connect the input cable to the DC power supply device.

When you turn ON the input power supply, the power output operation starts, and at the same
time, battery charging operations starts, and the battery will be completely charged in about 8
hours.

3 - 8

DC power supply device

(24 VDC)

Connected deviceUPS

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

3 Installation and connection

Precautions for Safe Use

WARNING

Note that the battery has not been charged. Charge the battery when you use the UPS for the
first time.

3-2-5 Connecting a cable to the battery terminal block, input terminal

block and output terminal block

3

For details about the connectable sizes and recommended cable sizes, see the following table.

20 A 40 A

Solid wire

Connectable sizes Cable

Stripped cable length 8 to 10 mm 18 mm

Recommended sizes

Temperature rating for recommended cable 90°C

Do not short between the connector terminals.

• Doing so may result in electric shock.

• The protection board inside the battery unit may be damaged due to a short-circuit.

• Connect each connection cable to the correct connected device.

• Connect the terminal of each connection cable to the connector port with correct polarity.

• Be sure to follow the above connection procedure.

Stranded wire

AWG AWG 8 to 24 AWG 6 to 18

Solid wire /
Stranded wire

AWG AWG 12 AWG 6 to 8

0.2 to 10 mm

0.2 to 6 mm

2.0 mm

2

2

2

0.75 to 16.0 mm

8.0 to 14.0 mm

3-2-5 Connecting a cable to the battery terminal block, input terminal block and output terminal block

2

2

z Recommended ferrule terminals and tools

• Recommended ferrule terminals

Applicable wire

Ferrule

conductor

(mm2)

0.25 24

0.34 22

0.50 2 to 0

0.75 18

1/1.25 18/17

1.25/1.5 17/16

2.5 14 10 12 AI 2,5-10 H2.5/16DS FE-2.5-10N-BU

(AWG)

length

(mm)

8 10 AI 0,25-8 H0.25/12 FE-0.25-8N-YE

10 12 AI 0,25-10 - -

8 10 AI 0,34-8 H0.34/12 FE-0.34-8N-TQ

10 12 AI 0,34-10 - -

8 10 AI 0,5-8 H0.5/14 FE-0.5-8N-WH

10 12 AI 0,5-10 H0.5/16 FE-0.5-10N-WH

8 10 AI 0,75-8 H0.75/14 FE-0.75-8N-GY

10 12 AI 0,75-10 H0.75/16 E-0.75-10N-GY

8 10 AI 1-8 H1.0/14 FE-1.0-8N-RD

10 12 AI 1-10 H1.0/16 FE-1.0-10N-RD

8 10 AI 1,5-8 H1.5/14 FE-1.5-8N-BK

10 12 AI 1,5-10 H1.5/16 FE-1.5-10N-BK

Insulation

stripping mar-

gin [mm]

(when using

ferrule termi-

nals)

Recommended ferrule terminals

Manufactured

by Phoenix

Contact

Manufactured

by Widemüller

Manufactured by

WAGO

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

3 - 9

3 Installation and connection

Applicable wire

Ferrule

conductor

(mm2)

4 12 12 14 AI4.0-12 GY H4.0/20D FE-4.0-12N-GY
6 10 12 14 AI6.0-12 YE H6.0/20 FE-6.0-12N-YE

10 8

16 6 18 20 AI16-18 BU H16.0/28 FE-16-18N-BU

(AWG)

length

(mm)

12 14 AI10-12 RD H10.0/22EB FE-10-12N-RD
18 20 AI10-18 RD H10.0/28 FE-10-18N-RD

Insulation

stripping mar-

gin [mm]

(when using

ferrule termi-

nals)

Recommended ferrule terminals

Manufactured

by Phoenix

Contact

Manufactured

by Widemüller

Manufactured by

• Crimping tool

Specialist

crimping tool

Compression range

(mm)

0.25 to 6mm CRIMPFOX6

0.5 to 6mm CRIMPFOX6T-F

0.4 to 10mm CRIMPFOX10S
10 to 25mm CRIMPFOX 25R

0.14 to 6mm PZ6 Roto L

6 to 16mm PZ16

0.24 to 5mm variocrimp 4

6 to 16mm variocrimp 16

Model Manufacturer

Manufactured by Phoe­nix Contact

Manufactured by
Widemüller

Manufactured by
WAGO

WAGO

Note Make sure that the wire insulation outer diameter is less than the inner diameter of the insulated sleeve of

the recommended ferrule terminal.

Connecting a cable to the terminal block

1 Insert the tip of a flat blade screwdriver with a thin blade into the square hole at the right of the

terminal block.

Use a flat blade screwdriver of the following size.

20A: 2.5mm or less

40A: 3 mm or less

Then, the cable lock is released.

3 - 10

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

3 Installation and connection

2 With the tip of the flat blade screwdriver in the hole, insert a cable into a round hole at the left of

the terminal block.

3

3 Pull out the flat blade screwdriver. Then, the cable is locked.

Removing a connected cable from the terminal block

1 Insert the tip of a flat blade screwdriver with a 3 mm or less thin blade into a square hole at the

right of the terminal block and pull out the cable.

3-2-5 Connecting a cable to the battery terminal block, input terminal block and output terminal block

2 Pull out the flat blade screwdriver.

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

3 - 11

3 Installation and connection

3 - 12

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

Operations

This section describes the operations of the product.

4-1 Checking the operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

4-1-1 LED display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

4-1-2 Backup operation time setting / Battery replacement mode selection switch . . 4-5

4-2 Start and stop procedures and basic operation . . . . . . . . . . . . . . . . . . . . . 4-6

4-2-1 Start and stop procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

4

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

4 - 1

4 Operations

Output LED (Green)
Indicates the unit output status.

Battery LED (Yellow)
Displays the status of the battery.

Error LED (Red)
Displays the error status of the unit.

4-1 Checking the operation

4-1-1 LED display

Types of LEDs

Operation of the LED

z Blinking ( )

Blink0 Blink2

Blink1 Blink4

ON

OFF

ON

OFF

z Steadily ON ( )

ON

OFF

For details, refer to Concept of LED display on page 4-3.

200 mS

0.5 sec

200 mS

1 sec

Continuous

ON

OFF

ON

OFF

200 mS

2 sec

200 mS

4 sec

4 - 2

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

Concept of LED display

LED display

[DC ON]

No.

LED

(Green)

1 OFF --- OFF No DC input.

2

3 ON --- ON DC input.

4ONDis-

5

6(*1)

7(*1)

8

Blink 4

9

Blink 4 Blink 2

10

[BATT]

(Yellow)

Blink 4

Blink 1

Blink 0 Blink 0

LED

(*2)
(*3)

(*2)
(*3)

(*1)
(*2)

[ALERT]

LED

(Red)

Blink 0

Blink 0

output

Charge

UPS

ON Charge ON DC input.

ON Dis-

ON Charge/

OFF Charge/

OFF --- ON Output cannot be started

OFF Charge ON Waiting to start up due to

ON --- ON Charging was stopped

/Dis-

charge

charge

charge

Dis-

charge

Dis-

charge

Input

power

supply

OFF Backup operation due to

OFF (Same as above)

ON/

OFF

ON/

OFF

Description Procedures

Operation paused.

Operating normally.

Charging.

Operating normally.

power failure or DC input
error. Output will stop if
backup operation is contin­ued.

Battery level is low, so out­put will stop soon.

Overpower detected (101%
or above) because connec­tions exceeded capacity
limit (output continues).

Output stopped due to the
detection of a short-circuit
on connected device side
or due to connections sig­nificantly exceeding capac­ity limit.

because the DC input volt­age is outside the specified
range.

Note:

If this display occurs
when the unit has been
stopped by input of the
backup stop signal (BS)
(Page 7-2) or by using
the UPS monitoring soft­ware (Page 6-2), the rem­edy to the right is not
required because the
input voltage is within the
specification range.

low battery.

because the ambient tem­perature was detected as
55°C or above or 0°C or
below. (Displayed only
during normal operation.)

4 Operations

: Steadily ON : Blink : OFF

---

---

---

Process the termination of
the connected devices you
are using, and then stop the
devices.

Reduce connected devices
until the display condition
becomes as shown in No.3.

Check that the DC input of
connected devices is not
short-circuited, or that the
connection capacity does not
exceed the rated capacity.

Use in the DC input voltage
range described in the speci­fication.

Continue charging the bat­tery. When the set battery
level is reached, the UPS
automatically restarts.

Ensure that the ambient tem­perature is between 0°C and
55°C.

4

4-1-1 LED display

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

4 - 3

4 Operations

LED display

[DC ON]

No.

LED

(Green)

11

12

13 (*1)

14 (*1)

[BATT]

LED

(Yellow)

Blink 2 Blink 2

Blink 2

(*2)

(*2)

[ALERT]

LED

(Red)

Blink 2

output

Charge

UPS

ON Charge ON Battery not connected or

ON --- ON A battery abnormality was

ON --- ON UPS life counter counted

--- --- --- An UPS abnormality was

/Dis-

charge

Input

power

supply

Description Procedures

incorrectly connected, or
battery life counter counted
up to limit. (Displayed
during normal operation
only.)

detected.

up to limit. (Displayed
during normal operation
only.)

detected.

Replace the battery unit. By
purchasing a new battery
unit, you (the customer) can
replace the battery yourself
(refer to 5-2 Replacing the
battery unit on page 5-4).

Replace the UPS.

Stop the unit, discontinue the
input power supply, and then
connect the unit to the input
power supply again. If there
is no change in the display
contents, the unit has an
error. Replace the control
unit.

Note 1. The LED display becomes (OFF) when the unit charging operation is stopped.

2. The LED display becomes (Blink 4) during unit charging operation.

3. The LED display becomes (Steadily ON) during unit backup operation.

4 - 4

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

4 Operations

4-1-2 Backup operation time setting / Battery replacement mode selec-

tion switch

Switching to the backup operation time setting / Battery
replacement mode

Sets the backup operation time.

For the setting, use a 2.5 mm or less flat-head screwdriver.

Set value Description

SV FREE Maximum (back up until battery runs out)

0.5 30 seconds
1 1 min.
2 2 min.
3 3 min.
5 5 min.
10 10 min.
15 15 min.
20 20 min.

BATT REP

Switches to the battery replacement mode.

Set at the time of replacing the battery unit.

4

4-1-2 Backup operation time setting / Battery replacement mode selection switch

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

4 - 5

4 Operations

[DC ON] LED(green) : steadily ON
[BATT] LED (Yellow) : OFF or Blink 4

[ALERT] LED (Red) : OFF

Battery restorage

Output from UPS

UPS operating mode

Input power supply

Standby mode Normal operation

Normal operation

Backup operation

BL signal (OUT)

*1

BS signal (IN)

*1

BU signal (OUT)

*1

ON

OFF

High

Low

ON

OFF

ON

OFF

ON

OFF

ON

OFF

4-2 Start and stop procedures and basic

operation

4-2-1 Start and stop procedures

For details on the precautions for use, including start and stop of the product, refer to For use on page 13.

Start procedure

Connect the unit to the input power supply.

• Output starts directly through the input power
supply (The LED indicators are as shown on the
right side).

• When the input power is ON, the battery is
charged automatically.

Startup sequence

This section describes the startup sequence.

The unit starts as soon as it is connected to the input power supply.

*1. For details, refer to 7-1 I/O signal functions on page 7-2.

4 - 6

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

4 Operations

Durling power failure

Input power supply

Battery restorage

Output from UPS

UPS
operating
mode

BU signal (OUT)

*1

BL signal (OUT)

*1

BS signal (IN)

*1

Normal operation

Backup operation

ON

ON

OFF

OFF

OFF

OFF

High

Low

Empty

OFF

ON

ON

ON

ON

ON

OFF

OFF

OFF

OFF

High

Low

Empty

OFF

ON

ON

ON

Durling power failure

Input power supply

Output from UPS

UPS
operating
mode

BU signal (OUT)

*1

BL signal (OUT)

*1

BS signal (IN)

*1

Normal operation

Backup operation

Battery restorage

ON

ON

OFF

OFF

OFF

OFF

High

Low

Empty

OFF

ON

ON

ON

Durling power failure

Input power supply

Output from UPS

UPS
operating
mode

Normal operation

Backup operation

BU signal (OUT)

*1

BL signal (OUT)

*1

BS signal (IN)

*1

Battery restorage

The backup sequence when power failure/voltage drop (instanta­neous voltage drop) occures

Explains the backup sequence when a power failure occurs.

z

When the input power supply recovers while the battery level is sufficiently high

4

4-2-1 Start and stop procedures

*1. For details, refer to 7-1 I/O signal functions on page 7-2.

z When the input power supply recovers while the battery level is low

*1. For details, refer to 7-1 I/O signal functions on page 7-2.

z

When the input power supply does not recover until the battery becomes empty

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

*1. For details, refer to 7-1 I/O signal functions on page 7-2.

4 - 7

4 Operations

Output voltage

Input voltage

power failure or input voltage drop

DC voltage

28V

21V

24 VDC

22 VDC

18 VDC

z For shutdown by a BS signal

Input power supply

Battery restorage

Output from UPS

UPS
operating
mode

BU signal (OUT)

BL signal (OUT)

BS signal (IN)

*1

Empty

Normal operation

Backup operation

*1

*1

ON
OFF

High

Low

ON

OFF

ON

OFF

ON

OFF

ON

OFF

Durling power failure

*1. For details, refer to 7-1 I/O signal functions on page 7-2.

Input and output voltage time chart when shifting to backup opera­tion

Explains the operation when shifting to backup operation due to power failure or input voltage drop.

4 - 8

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

4 Operations

Additional Information

Operation after a power failure

If a power failure or input power supply error occurs, the operation automatically switches to backup
operation to continue the power output by using electrical power from the battery.

: Steadily ON : Blink : OFF

LED display

[DC ON]

LED

(Green)

[BATT]

LED

(Yellow

Blink 1

[ALERT]

LED

(Red)

Output Description

ON Backup operation is in progress in the battery due to power failure or

input power supply error.

ON Backup is operating due to power failure or AC input error. Battery

level is low, so output will stop soon.

OFF Battery is dead, so output stopped.

Operation when power is restored

z When power is restored during backup operation

When power is restored during backup operation, the output from input power supply automatically
starts again and the output operation continues. In addition, the battery charging operation starts.

z When power is restored after the power supply output stops

4

4-2-1 Start and stop procedures

If the power supply output stops due to empty battery unit, the unit automatically restarts and
resumes the power supply output when power is restored. And the battery charging operation starts.

Operation when stopping

Set the unit's mode selection / backup operation time selection switch to "0.5" (Backup operation
time setting: 30 sec.), and stop the input power supply.

After 30 sec. have elapsed, the unit turns OFF and the output stops.

If you stop the unit, the battery charging stops.

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

4 - 9

4 Operations

4 - 10

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

Maintenance and inspection

This section describes how to perform maintenance of this product and also how to
replace the battery unit.

5-1 Inspecting the battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

5-1-1 Expectancy of the battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

5-1-2 Estimated backup time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

5-2 Replacing the battery unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

5-2-1 Notification that the battery unit needs to be replaced . . . . . . . . . . . . . . . . . . . 5-4

5-2-2 Procedure for replacing the battery unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

5-3 Cleaning the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

5

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

5 - 1

5 Maintenance and inspection

Caution

5-1 Inspecting the battery

The battery has a limited lifespan.

(The life varies depending on your storage/use environment and backup frequency.)

The nearer the end of the life is, the more rapidly deterioration proceeds.

For details on the precautions when performing maintenance, refer to For maintenance on
page 10.

5-1-1 Expectancy of the battery

For maintenance on page 14

Operating environment temperature Battery life expectancy

25°C 10 years
35°C 6.7 years
45°C 3.7 years
55°C 1.9 years

Note Not a guaranteed performance.

5-1-2 Estimated backup time

The backup time varies depending on the capacity of connected devices.

After calculating the total capacity of connected devices, refer to the graph of the backup time to obtain
an estimation of the initial value of the backup time. (This is also applied to checking the battery.)

1 Convert the total capacity (power consumption) of the connected devices to watts (W).

The indicator can show values in two different ways: amperes (A), and watts (W).

Example 1: 24 VDC, 145 W

Example 2: 24 VDC, 1.8 A

For devices that use the A indication, convert the capacity into W.

Average ambient

temperature

AW = A × 24

Example : 1.8 (A) = 1.8 × 24 (W) = 43.2 (W)

Val ue

5 - 2

2 Add the values converted into W to obtain the total capacity of the connected devices.
3 Calculate the initial value of the backup time for the total capacity of the connected devices from

the graph below.

• Graph of backup time (graph of initial values for products that have not been used at 25°C).

The backup time becomes shorter than the graph (table) below when temperature is lower.

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

Backup time table (Time unit: minutes)

0

40

80

120

160

200

240

280

320

0 60 120 180 240 300 360 420 480 540 600 660 720 780 840 900 960 1020

S8BA-24D24D960SBF
+
S8BA-S960L

S8BA-24D24D480SBF
+
S8BA-S960L

S8BA-24D24D480SBF
+
S8BA-S480L

Backup time (Minutes)

Capacity (W)

5 Maintenance and inspection

5

5-1-2 Estimated backup time

Model

S8BA-24D24D960SBF

30 60 90

290 138

94 66 43 30 24 20 16 14 13 12 11 10 9 8 7 6

120 180 240 300 360 420 480 540 600 660 720 780 840 900 960

Capacity (Watt)

+

S8BA-S960L

S8BA-24D24D480SBF

290 138

94 66 43 30 24 20 16 14 --- --- --- --- --- --- --- ---

+

S8BA-S960L

S8BA-24D24D480SBF

134

63 41 29 19 15 11 9 8 6 --- --- --- --- --- --- --- ---

+

S8BA-S480L

Note These backup times are for reference only. Times may vary according to the lifespan of the battery and the

external environment (temperature, etc).

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

5 - 3

5 Maintenance and inspection

Precautions for Correct Use

Precautions for Correct Use

Caution

Caution

5-2 Replacing the battery unit

This UPS supports hot swapping. The battery unit can be replaced both when the power is turned OFF
(while the power output is OFF) and when the power is turned ON (while the power output is ON).

For details on the precautions for maintenance, refer to For maintenance on page 14 and
When the Battery Unit is Replaced on page 15

• When replacing the battery unit, set the unit to "BATT REP" (Battery replacement mode)
using the mode selection / backup operation time selection switch.

Perform a reset with the “input power supply” ON.

• The battery life counter is automatically reset when the battery unit is replaced.

If you replace the battery unit without activating the battery replacement mode, the battery
life may not be detected accurately because the battery life counter is not reset.

• Do not replace the battery unit while the UPS is operating in backup mode. Output will stop.

• If an input power supply error such as a power failure occurs when replacing the battery unit
while in operation, backup cannot be performed and output stops.

5-2-1 Notification that the battery unit needs to be replaced

When the battery unit replacement period is reached, the LED indicators show "[DC ON] LED: Green
(Steadily on) / [BATT] LED: Yellow (Blink 2) / [ALERT] LED: Red (Blink 2)".

The battery life is determined by the counter function. The battery life counter operates while input
power is supplied after shipment. (When the operating environment temperature of the battery unit is
higher than 25°C, the value of the counter will be incremented at a faster pace.)

• The battery unit used in the unit has a limited lifespan. The life varies depending on your
use environment and backup frequency.

• The nearer the end of the life is, the more rapidly deterioration proceeds.

• The battery unit deteriorates even if it is stored. The higher the temperature is, the shorter
the life becomes.

5 - 4

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

5 Maintenance and inspection

100% →

50% →

Default

Guide of battery
deterioration

(Notice by
display on
LED and buzzer )

Battery capacity

Battery Life Counter Function

The function that counts the battery unit energization time and notifies the user when it is time to
replace the battery unit is called the battery life counter function.

The UPS measures the ambient temperature at every 8 hours and adds the counter value according to
the measured temperature. Here, the initial value of the lifespan counter before adding the counter
value, which is measured at every 8 hours, is set to 0.

The lifespan of the lithium battery tends to be affected by the charging time and the ambient tempera­ture; thus the temperature coefficient is set to "1.0" for 25 degrees Celsius or lower, while it is set to
higher as the temperature rises above 25 degrees Celsius.

When the counter value reaches the specified value (equivalent to 50% of the battery capacity initial
value), notification is performed by the LED.

Calculation formula: t = 109,575/10α*8

t: Battery life (hour)

109,575: Counter value showing the battery deterioration (equivalent to 50% of the battery capacity of
the initial value)

α: Temperature coefficient

5

5-2-1 Notification that the battery unit needs to be replaced

Average ambient

temperature

55°C 1.9 years 5.3
50°C 2.5 years 4.0
45°C 3.7 years 2.7
40°C 5 years 2.0
35°C 6.7 years 1.5
30°C 8.4 years 1.2
25°C 10 years 1.0

Battery life expec-

tancy (t)

Temperature

coefficient (α)

Guidelines for how often to check the battery unit

Average ambient

temperature

55°C For the first 1 years after starting use When 1 years or more have passed after starting use

50°C For the first 1.5 years after starting use When 1.5 years or more have passed after starting use

45°C For the first 3 years after starting use When 3 years or more have passed after starting use

25°C For the first 6 years after starting use When 6 years or more have passed after starting use

6-month check 3-month check

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

5 - 5

5 Maintenance and inspection

Precautions for Safe Use

Additional Information

Set to “BATT REP”.

5-2-2 Procedure for replacing the battery unit

For details on the precautions to be taken when replacing the battery unit, refer to When the Battery
Unit is Replaced on page 15 in the "Safety precautions" at the beginning of this manual.

Be sure to activate the battery replacement mode before replacing the battery unit.

• When replacing the battery unit, set the unit to "BATT REP" (Battery unit replacement mode)
using the mode selection / backup operation time selection switch.

• The battery life counter is automatically reset when the battery unit is replaced.
If the battery unit is replaced without setting the battery replacement mode, the battery life
may not be detected accurately because the battery life counter is not reset.

Buy a new battery unit for replacement.

1 Set the unit's mode selection / backup operation time selection switch to the battery replace-

ment mode.

The setting is complete when the LED indicators show "[DC ON] LED: Green (Blink 0) / [BATT]
LED: Yellow (Blink 0) / [ALERT] LED: Red (Blink 0)" for a few seconds before showing "[DC ON]
LED: Green (Blink 4) / [BATT] LED: Yellow (Blink 4) / [ALERT] LED: Red (Blink 4)".

5 - 6

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

5 Maintenance and inspection

2 Pull out the cables from the old battery unit in the following order:

For details about the method of connecting cables to the terminal block, refer to 3-2-5 Connecting
a cable to the battery terminal block, input terminal block and output terminal block on page 3-9"

(1) Battery communication cable

(2) BATT connection cable Negative side

5

5-2-2 Procedure for replacing the battery unit

(3) BATT connection cable Positive side

3 Remove the old battery unit.

4 Install the new battery unit.

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

5 - 7

5 Maintenance and inspection

Precautions for Correct Use

Return to the original settings.

5 Insert the cables in the new battery unit in the following order:

For details about the method of connecting cables to the terminal block, refer to 3-2-5 Connecting
a cable to the battery terminal block, input terminal block and output terminal block on page 3-9"

(1) BATT connection cable Positive side

(2) BATT connection cable Negative side

(3) Battery communication cable

Few seconds after connecting the battery communication cable, the LED indicators show "[DC
ON] LED: Green (Blink 0) / [BATT] LED: Yellow (Blink 0) / [ALERT] LED: Red (Blink 0)".

6 Finally, set the unit's mode selection / backup operation time selection switch to the Backup

Time Setting mode.

The setting is complete when the LED indicators show "[DC ON] LED: Green (Steadily on) /
[BATT] LED: Yellow (Off) / [ALERT] LED: Red (Off)".

Do not short between the terminals of the battery communication cable.

• Doing so may result in electric shock.

• The protection board inside the battery unit may be damaged due to a short-circuit.

• Connect each connection cable to the correct connected device.

• Connect the terminal of each connection cable to the connector port with correct polarity.

• Be sure to follow the above connection procedure.

Battery unit replacement is now complete.

5 - 8

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

5-3 Cleaning the Unit

Caution

5 Maintenance and inspection

For details on the precautions when performing maintenance, refer to For maintenance on
page 10.

For maintenance on page 14

1 Cleaning the UPS

Moisten a soft cloth with water or detergent, squeeze it tightly, and wipe the product lightly.

Do not use chemicals such as thinner and benzene. (They cause deformation or discoloration.)

2 Removing dust from the input terminal block and the output terminal block terminal blocks of the

UPS

Stop all the connected devices and the UPS and turn the “input power supply” OFF.

Then, remove dust with a dry cloth and turn the “input power supply” ON again.

Note For information on the connection procedure, refer to 3-2 Connection on page 3-5.

5

5-2-2 Procedure for replacing the battery unit

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

5 - 9

5 Maintenance and inspection

5 - 10

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

6

To perform shutdown processing of the devices when a power failure occurs

This section describes how to use the UPS monitoring software.

6-1-1UPS monitoring software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

6-1-1 UPS monitoring software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

6-1-2 How to connect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

6-1-2How to connect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

6 - 1

6 To perform shutdown processing of the devices when a power failure occurs

Connect to the RS232C
port of your computer

Connect to
RS232C/USB
port on UPS

Connector

Connector

Connect to the USB
port of your computer

6-1 The outline on the UPS monitoring

software

6-1-1 UPS monitoring software

"Simple Shutdown Software" or "PowerAttendant Lite" allows you to automatically shut down the PC
when a power failure occurs.

For more information, refer to the manual of this software.

Install either "Simple Shutdown Software" or "PowerAttendant Lite". These two cannot be used at the
same time.

6-1-2 How to connect

1 Connect the UPS to a computer.

• USB connection: The USB cable that comes with the product can be used.

• RS232C connection: An optional connection cable (S8BW-C01) is required.

2 Install “Simple Shutdown Software” in your computer.

For details, see the manual for the above software.

6 - 2

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

6 To perform shutdown processing of the devices when a power failure occurs

Precautions for Safe Use

RJ45

Name

TXD

GND

RXD

I/O

O

-

I

F

1
2
3
4
5
6
7
8

S8BW-C01

Connection

M

1
2
3
4
5
6
7
8

F

1
2
3
4
5
6
7
8
9

Dsub-9pin

Name

DCD

RxD
TxD

DTR

SG
DSR
RTS
CTS

RI

M

1
2
3
4
5
6
7
8
9

I/O

I

I
O
O

-

I
O

I

I

[UPS side] [PC side]

[UPS side] [PC side]

RJ45

Name

USB D+

USB D-

-

GND

VBUS

-

-

-

I/O
I/O
I/O

-

-

I/O

-

-

-

F

1
2
3
4
5
6
7
8

USB cable

Connection

M

1
2
3
4
5
6
7
8

F

1
2
3
4

USB

Name

VBUS

USB D-

USB D+

GND

M

1
2
3
4

I/O

● Cable pin configuration

• Using an RS-232C cable

• Using a USB cable

6

6-1-2 How to connect

When the power is restored while auto shutdown processing is being performed after
the "Settings for automatically stopping the UPS after OS shutdown" have been made.

• If a power failure occurs and then the power is restored while auto shutdown is still in prog­ress, UPS output will stop temporarily after the set time elapses.

Therefore, after shutdown is finished, do not turn on the computer until the UPS has finished
restarting.

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

6 - 3

6 To perform shutdown processing of the devices when a power failure occurs

6 - 4

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

Using the I/O signal functions

This section describes the I/O signals of the product.

7-1 I/O signal functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

7-1-1 Type of output signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

7-1-2 Type of input signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

7-1-3 CONTACT port (RJ45 connector) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

7-1-4 Contact signal ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

7-1-5 Contact signal circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

7-1-6 Precautions and notes for the use of the I/O signal functions . . . . . . . . . . . . . 7-4

7-1-7 Example of the use of the Contact Signal circuit . . . . . . . . . . . . . . . . . . . . . . . 7-4

7

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

7 - 1

7 Using the I/O signal functions

7-1 I/O signal functions

z About contact signal

You can develop your unique system based on the following specifications to automate the process
at a power failure. You can perform power-failure processing by allowing the system to detect the
backup signal (BU) and also perform system shutdown processing by allowing the system to detect
the low battery level signal (BL). Also, by inputting the backup stop signal (BS) from the system, you
can stop the UPS with a sufficient battery level to prepare for the next occurrence of a power failure.

7-1-1 Type of output signals

The UPS has 4 kinds of output signals.

The output circuit consists of an open collector circuit using a photo coupler.

Signal Description

Backup signal output (BU) Stays ON during backup operation at a power failure.
Low battery level signal output (BL) Goes ON when the battery becomes weak during

backup operation at a power failure.

Trouble signal output (TR) Goes ON when an internal failure of the UPS occurs or

when the battery life counter expires.

Battery replacement signal output (WB) Goes ON when it is detected that the battery lifespan

has expired or the battery has deteriorated. (The bat­tery life counter goes on counting till the time the input
power is being supplied.)

7-1-2 Type of input signals

The UPS has 2 kinds of input signals.

Signal Description

UPS Stop Signal input (BS) When the BS signal is ON (High), the output of the

Remote ON/OFF signal Remote ON/OFF signals can be used to start and stop

*1. BS signal delay time

It is possible to set the period of time from when a BS signal is received until the output of the UPS is stopped.
The output of the UPS can be stopped by inputting the voltage signal (High).

UPS is stopped after the time period specified in

advance has elapsed*1.

the UPS, by using either an externally connected con­tact or the ON/OFF status of the open collector circuit.
When signal is OFF, the UPS will be turned on. When
signal is ON, the UPS will be turned off.

In the factory settings, the UPS stops operation when
this is short-circuited.

You must connect the unit to the input power supply to
be able to use this function.

7 - 2

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

7-1-3 CONTACT port (RJ45 connector)

Pin number1Pin number8

7 Using the I/O signal functions

Outlook of the

connector

Pin

number

1 White/orange Backup signal output (BU)
2 Orange Remote ON/OFF input (-)
3 White/green Trouble signal output (TR)
4 Blue COMMON (COM)
5 White/blue Battery LOW signal output (BL)
6 Green Backup stop signal input (BS)
7 White/brown Battery replacement signal output

8 Brown Remote ON/OFF input (+)

Cable color Description

7-1-4 Contact signal ratings

Signal Description

Signal output (BL, TR, BU, WB) • Applicable voltage: 50 VDC or less

Remote ON/OFF input • Voltage between terminals: DC3.3V

UPS Stop Signal input (BS) • Input voltage:

7

7-1-3 CONTACT port (RJ45 connector)

(WB)

• Maximum current: 500 mA

• BU signal minimum response time: 5ms

• Current when closed: 10 mA max.

• Maximum signal response time

At stop: 100 ms

At start: 300 ms

HIGH(ON) 8 to 24 VDC

LOW(OFF) 0.5 VDC or less

• Input current: 250 mA

• Maximum signal response time

At stop: 100 ms

At start: 300 ms

7-1-5 Contact signal circuit

Signal output (BL, TR, BU, WB)

UPS Stop Signal input (BS)

BL

TR

BU

WB

100 kΩ

BS

COM

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

Remote ON/OFF input

3.3 V

220 Ω

Remote ON/OFF (+)

Remote ON/OFF (-)

7 - 3

7 Using the I/O signal functions

Precautions for Safe Use

BS

COM

0 V

100 Ω

100 Ω

BS

COM

24 V

[UPS Side]

Output display LED

Connect the relay output or PNP
type transistor output.

24 V

OUTPUT UNIT

OUTPUT UNIT

OUT

Output display LED

Connect the relay output or NPN
type transistor output.

OUT

0 V

[PLC Side]

Internal circuit

Internal circuit

0 V

24 V

0 V

24 V

[UPS Side]

[PLC Side]

INPUT UNIT

Connect the 24 VDC bipolar
input or NPN input

INPUT UNIT

Connect the 24 VDC bipolar
input or PNP input

BU IN

BU IN

+COM

2.4 kΩ

Input display LED

Internal circuit

2.4 kΩ

Input display LED

Internal circuit

-COM

+COM

-COM

7-1-6 Precautions and notes for the use of the I/O signal functions

When connecting a device such as a relay that generates counter electromotive force to the
signal output circuit, connect diodes

that prevent counter electromotive force to both ends of the relay.

Relay

System sideUPS side

Connection cable
(Twisted or shielded)

7-1-7 Example of the use of the Contact Signal circuit

BS signal example of connection with PLC BU signal example of connection with PLC

7 - 4

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

Troubleshooting

This section describes how to check and handle errors that occur at the time of using
the product.

8-1 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2

8

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

8 - 1

8 Troubleshooting

8-1 Troubleshooting

Perform the checks shown below if the unit is operating abnormally.

Problem Check and remedy

The unit does not start operation.

There is no LED display even
when the unit is connected to the
input power supply.

Backup is not possible.

The computer stops when a power
failure occurs.

Backup is performed too fre­quently.

Frequent switching is performed
although a power failure does not
occur.

You hear the sound of switching.
The power is not turned ON even
when the unit is connected to the
input power supply.
The battery unit replacement dis­play "[DC ON] LED: Green
(Steadily on) / [BATT] LED: Yellow
(Blink 2) / [ALERT] LED: Red (Blink

2)" appears.
The LED indicators show "[DC ON]

LED: Green (Steadily on) / [BATT]
LED: Yellow (Off, Steadily on, or
Blink 4) / [ALERT] LED: Red (Blink

0)".
The LED indicators show "[DC ON]
LED: Green (Off) / [BATT] LED:
Yellow (Off, Steadily on, or Blink 4)
/ [ALERT] LED: Red (Blink 0)".

Make sure the AC input is securely connected to commercial power.

If the status indicator does not display properly after you perform the above
operation, there is a problem with the unit.

Refer to Concept of LED display on page 4-3.
The battery may not be fully charged.

Perform the test after charging the battery for at least 8 hours.

The battery charging operation starts when the battery is connected to the
input power supply. The battery is not charged when it is not connected to
the input power supply.
Variations (decrease) in the input power occur frequently. Or, noise may be
included that significantly distorts the voltage waveform of the input power.

• Make sure the voltage of the input power supply to which the unit is con­nected is normal.

• The voltage may also drop when the cable used to connect the unit is
long or too thin.

Check the voltage value of the input power supply when the LED display is
"[DC ON] LED: Green (Blink 4) / [BATT] LED: Yellow (Off) / [ALERT] LED:
Red (Off)".

Battery life counter counted up to limit. The battery unit has been used up
to its end-of-life. Replace the battery unit.

Refer to “5-2-1 Notification that the battery needs to be replaced”.

There are too many connected devices. Reduce the number of connected
devices until the LED display becomes "[DC ON] LED: Green (Steadily on)
/ [BATT] LED: Yellow (Off or Blink 4) / [ALERT] LED: Red (Off)".

Output stopped due to connections exceeding capacity limit. Turn OFF all
power to the unit and connected devices, and reduce the number of con­nected devices. Then, turn the power to the unit and connected devices
back ON and check whether the LED display becomes "[DC ON] LED:
Green (Steadily on) / [BATT] LED: Yellow (Off or Blink 4) / [ALERT] LED:
Red (Off)".

8 - 2

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

Appendix

This section describes the dimensions and characteristic data of the product.

A-1 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

A-2 Characteristic data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5

A

A-2-1 Derating curve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5

A-2-2 Overcurrent protection curve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-6

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

A - 1

3199.4

9.5

44 111.4

124

Note Unit: mm / Tolerance:±1mm

80

124

111.4

9.5

30.799.4

Note Unit: mm / Tolerance:±1mm

A-1 Dimensions

S8BA-24D24D480SBF

S8BA-S480L

A - 2

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

S8BA-24D24D960SBF

Note Unit: mm / Tolerance:±1mm

150

124

111.4

9.5

30.799.4

Note Unit: mm / Tolerance:±1mm

52 111.4

9.5

A

S8BA-S960L

124

3199.4

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

A - 3

.5

15 25 25

10 10

1,000(500)

*

25 25 15(5)

*

35

±0.3

27

±0.1

1

* PFP-50N dimensions are

given in parentheses.

Optional items for rail mounting

z Support rail (Alminum)

PFP-100N

PFP-50N

±0.15

7.3

4

5

z Support rail (Alminum)

PFP-100N2

16

4.5

±0.3

29.2242735

15 25 25

10 10

1,000

25 25 15

11.5

z Fastening plate (End plate)

PFP-M

10

6.2

1

1.8

1.3

1.8

35.5 35.3

M4×8

50

11.5

Pan head screw

10

M4 spring washer 4.8

Note 1. If the DIN rail is subjected to vibration or shocks, scrap metal can be produced because of aluminum

abrasion. In such a case, use a steel DIN rail instead.

2. If the product slides sideways, attach an end plate (PFP-M) on both sides of the main body.

A - 4

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

A-2 Characteristic data

Operating temperature (°C)

Load ratio (%)

0 10 20 30 40 50 60

100

80

60

40

20

0

A-2-1 Derating curve

z Standard mounting (15 mm or more space between the left and right)

A

A-2-1 Derating curve

z Contact mounting (less than 15 mm space at the left and right)

100

80

Load ratio (%)

60

40

20

0

0 10 20 30 40 50 60

Operating temperature (°C)

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

A - 5

Load ratio (%)

Output voltage (%)

0

20

40

60

80

100

020406080100120

111%

A-2-2 Overcurrent protection curve

z 480W/960W

A - 6

S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)

OMRON Corporation Industrial Automation Company

Kyoto, JAPAN

Contact: www.ia.omron.com

Regional Headquarters

OMRON EUROPE B.V.

Wegalaan 67-69, 2132 JD Hoofddorp
The Netherlands
Tel: [phone]/Fax: [phone]

OMRON ASIA PACIFIC PTE. LTD.

No. 438A Alexandra Road # 05-05/08 (Lobby 2),
Alexandra Technopark,
Singapore 119967
Tel: [phone]/Fax: [phone]

OMRON ELECTRONICS LLC

2895 Greenspoint Parkway, Suite 200
Hoffman Estates, IL 60169 U.S.A.
Tel: [phone]/Fax: [phone]

OMRON (CHINA) CO., LTD.

Room 2211, Bank of China Tower,
200 Yin Cheng Zhong Road,
PuDong New Area, Shanghai, 200120, China
Tel: [phone]/Fax: [phone]

Authorized Distributor:

© OMRON Corporation 2015-2018 All Rights Reserved.

In the interest of product improvement,
specifications are subject to change without notice.

Cat. No. U726-E1-01

0418