ABB PowerValue 11 T Series User manual

PowerValue 11 T 1-3 kVA
User Manual
04-3598_ABB_PVA11_T_1-3kVA_EN_REV-B.doc
© Copyright 2016 ABB, All rights reserved.

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FOREWORD
The UPS system operates with mains, battery or bypass power. It contains components that carry high
currents and voltages. The properly installed UPS system is grounded to earth and IP 20 rated against
electrical shock and foreign objects.
Operations inside the UPS must be performed by a service engineer from the SUPPLIER or from
an agent authorized by the SUPPLIER.
This user manual contains guidelines to check delivery, installing and commissioning of the UPS and is
intended for people who plan the installation, install, commission and use or service the UPS. The
reader is expected to know the fundamentals of electricity, wiring, electrical components and electrical
schematic symbols.
Read carefully all instructions and save this manual for future reference.
SYMBOLS
The following symbols are used in this manual, the list below describes each symbol.
The instructions in this manual should be followed during installation, operation and maintenance
of the UPS and batteries.
WARNING: Danger of electrical impact
NOTE: Read the information, in order to avoid equipment damages
PROTECTIVE GROUNDING TERMINAL: A terminal which must be connected to earth ground
prior to making any other connection to the equipment
A terminal to which or from which an alternating current or voltage (AC) may be applied or supplied
A terminal to which or from which a direct current or voltage (DC) may be applied or supplied
Battery
ON
ON: The principal power switch is in the “ON” position
OFF
OFF: The principal power switch is in the “OFF” position
Overload indication
Alarm silence
Recycle
Do not dispose with ordinary trash

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CONTENTS
1SAFETY INSTRUCTIONS.............................................................................................6
1.1 Operator precautions ................................................................................................................6
1.2 Environmental Considerations ...................................................................................................6
1.3 Declaration of Safety conformity ...............................................................................................6
1.4 Inquiries....................................................................................................................................7
1.5 Operation .................................................................................................................................7
1.6 Maintenance, servicing and faults..............................................................................................7
2MAINTENANCE............................................................................................................9
2.1 Operation .................................................................................................................................9
2.2 Storage .....................................................................................................................................9
2.3 Routine Maintenance ................................................................................................................9
2.4 Battery Maintenance.................................................................................................................9
2.4.1 Battery Test.................................................................................................................................................9
2.4.2 Maintenance, disposal and recycling ..........................................................................................................9
3INSTALLATION ..........................................................................................................10
3.1 Delivery, Transportation and Storage.......................................................................................10
3.1.1 Receipt of the UPS and visual inspection .................................................................................................10
3.1.2 Unpacking.................................................................................................................................................10
3.1.3 Storage of UPS.........................................................................................................................................10
3.2 Site Planning and Positioning...................................................................................................10
3.2.1 Planning before the installation.................................................................................................................10
3.3 General Characteristics............................................................................................................10
3.3.1 Front View.................................................................................................................................................10
3.3.2 Back View.................................................................................................................................................11
3.4 Electrical Installation ...............................................................................................................12
3.4.1 Commissioning .........................................................................................................................................12
3.4.2 UPS Input Cabling ....................................................................................................................................12
3.4.3 UPS Output Cabling..................................................................................................................................13
3.4.4 Emergency Power Off (EPO)....................................................................................................................13
3.5 Battery charging......................................................................................................................14
3.6 Connecting external batteries (Models without in-built batteries) ............................................14
3.7 Installation Checklist ...............................................................................................................15
3.8 Turning on the UPS..................................................................................................................15
3.9 Battery test .............................................................................................................................15
3.10 Turning off the UPS .................................................................................................................15
3.11 Silencing the audible alarm......................................................................................................16
4OPERATION ...............................................................................................................17
4.1 Control Panel ..........................................................................................................................17
4.1.1 Selection Keys ..........................................................................................................................................17
4.1.2 LCD Display..............................................................................................................................................18
4.2 Operation ...............................................................................................................................20
4.2.1 Output off or EPO mode –Code 0............................................................................................................20
4.2.2 Bypass mode –Code 1.............................................................................................................................21
4.2.3 Online mode –Code 2..............................................................................................................................21
4.2.4 Battery mode –Code 3.............................................................................................................................22
4.2.5 Battery Test –Code 4...............................................................................................................................22
4.2.6 ECO mode (Economy mode) –Code 5.....................................................................................................23
4.2.7 Frequency Converter mode –Code 6.......................................................................................................23
4.3 User Settings...........................................................................................................................23
5COMMUNICATION .....................................................................................................24
5.1 Interface .................................................................................................................................24

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5.1.1 USB...........................................................................................................................................................24
5.1.2 AS400 Interface (Option) ..........................................................................................................................24
5.2 Monitoring Software ...............................................................................................................25
6TROUBLESHOOTING................................................................................................26
6.1 Fault identification and rectification ........................................................................................26
7TECHNICAL SPECIFICATIONS.................................................................................29

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1 SAFETY INSTRUCTIONS
1.1 Operator precautions
The user must follow the precautions and only perform the described operations. Also in these measures
the operator of the UPS System must adhere to the instructions in this manual. Any deviation from the
instructions could be dangerous to the user or cause accidental load loss.
1.2 Environmental Considerations
To operate the UPS at the best efficiency point, your installation site should meet the environmental
parameters outlined in this manual. Excessive amount of dust in the operating environment may cause
damage or lead to malfunction. The UPS should be always protected from the outside weather and
sunshine and the operating environment must meet the weight, airflow, size and clearance requirements
specified in the technical datasheet. Under no circumstances, the UPS should be installed in an airtight
room, in the presence of flammable gases, or in an environment exceeding environmental requirements
here below.
An ambient temperature of +20°C to +25°C is recommended to achieve a long life of the UPS and
batteries. The cooling air entering the UPS must not exceed +45 °C and the humidity should be below
90% (non-condensing).
1.3 Declaration of Safety conformity
PowerValue 11 is designed, manufactured and commercialized in accordance with the standard EN ISO
9001 of Quality Management Systems. The marking shows the conformity to the EEC Directive by
means of the application of the following standards in accordance with the specifications of the
harmonized standards:
• 2006/95/EC Low voltage directive.
Standards as reference:
• EN-IEC 62040-1. Uninterruptible power supply (UPS). Part 1-1: General and safety requirements for
UPS’s used in accessible areas by end users.
• EN-IEC 60950-1. IT equipment. Safety. Part 1: General requirements.
• 2011/65/EU Restriction of the use of certain hazardous substances (RoHS) DIRECTIVE
The supplier’s responsibility is excluded in the event of any modification or intervention in the product by
the customer’s side.
Product Standards
Standards
RoHS
IEC/EN50581:2012
IEC/EN50581:2012
WARNING!
THE SUPPLIER DOES NOT TAKE ANY RESPONSIBILITY FOR
DAMAGES CAUSED THROUGH WRONG MANIPULATIONS OF THE UPS
SYSTEM.
WARNING!
IT IS PROHIBITED TO REMOVE ANY SCREWS FROM THE UPS
SYSTEM AS THERE IS DANGER OF ELECTRICAL SHOCK.
WARNING!
BEFORE CONNECTING THE MAINS YOU MUST ENSURE THAT THERE
IS A PROPER EARTH CONNECTION!

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1.4 Inquiries
Address inquiries about the UPS to the local office or agent authorized by the supplier. Please note the
type code and the serial number of the equipment and contact your nearest agent authorized by the
supplier. The Code and the serial no. are shown on the nameplate of the product. For further information
on troubleshooting, go to Section 6.
1.5 Operation
Refer to instruction before operating the UPS.
Do not remove the enclosure of the UPS. This system is to be serviced by qualified service personnel
only.
Do not disconnect the mains cable of the UPS or the building wiring socket during operation as this
would remove the ground to the UPS and of all connected loads.
In order to fully disconnect the UPS, press the OFF button. Only after the UPS is shutdown, disconnect
the mains load.
Ensure that no liquid or other foreign objects enter the UPS.
The socket-outlet should be installed near the equipment and should be easily accessible.
ISOLATE THE UNINTERRUPTIBLE POWER SUPPLY (UPS) BEFORE WORKING ON ITS
CIRCUIT.
For cabling, remove the protective panel only after disconnecting the terminal connections and use the
appropriate wires as indicated in Table 1.
UPS
Input Wire
Output Wire
3 kVA
(with
inbuilt
batteries)
NA
AWG 8, 90C copper wire and 12 lb-in Torque force when
connecting to the terminal blocks
3 kVA (no
in-built
batteries)
AWG 12, 90C copper wire
and 4.4 lb-in Torque force
when connecting to terminal
block
AWG 12, 90C copper wire and 12 lb-in Torque force when
connecting to the terminal blocks
Table 1: Input and Output Wiring
1.6 Maintenance, servicing and faults
Repairs may be carried out only by qualified maintenance personnel as the UPS operates with
hazardous voltages.
WARNING!
EVEN AFTER THE UNIT IS DISCONNECTED FROM THE MAINS POWER
SUPPLY, COMPONENTS INSIDE THE UPS ARE STILL CONNECTED TO
THE BATTERY WHICH ARE POTENTIALLY DANGEROUS.
Before carrying out any kind of service and/or maintenance, disconnect the batteries. Verify that no
current is present and no hazardous voltage exists in the capacitor or BUS capacitor terminals. Batteries
must be replaced only by qualified personnel.

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WARNING!
THE BATTERY CIRCUIT IS NOT ISOLATED FROM THE INPUT
VOLTAGE. HAZARDOUS VOLTAGES MAY OCCUR BETWEEN THE
BATTERY TERMINALS AND THE GROUND. VERIFY THAT NO
VOLTAGE IS PRESENT BEFORE SERVICING.
When changing the batteries, replace with the same quantity and the same type of batteries.
Replace the fuse only by a fuse of the same type and of the same amperage in order to avoid fire
hazards.
Do not dispose the batteries on fire as they may explode.
Do not open or mutilate batteries. Released electrolyte is harmful to the skin and eyes.

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2 MAINTENANCE
2.1 Operation
PowerValue 11 T system contains no user-serviceable parts. If the battery service life (3~5 years at
25°C ambient temperature) has been exceeded, the batteries must be replaced. In this case, please
contact your dealer.
2.2 Storage
If the batteries are stored in temperate climatic zones, they should be charged every three months for
1~2 hours. It is recommended to shorten the charging intervals to two months at locations subject to high
temperatures.
2.3 Routine Maintenance
The UPS is designed to receive regular preventative maintenance inspections. These preventative
maintenance inspections are essential to ensure that both the useful working life and the reliability of the
UPS are maximized.
Preventative maintenance inspections involve working inside the UPS, which contains hazardous AC
and DC voltages. Only trained or agreed service personnel and authorized field service engineers are
fully aware of all of the hazardous areas within the UPS.
2.4 Battery Maintenance
2.4.1 Battery Test
If the battery service life has been exceeded, the batteries must be replaced. Battery replacement should
be performed only by qualified personnel.
It is recommended to shut down the UPS completely before the replacement and, if present, the battery
breaker should be switched off. Disconnect the battery cable carefully and make sure no exposed wires
can be touched. Reconnect the new batteries to the UPS by following Section 3.5. Then turn on the
battery breaker and start the UPS.
If it needs to replace the batteries while the UPS is running, make sure the UPS would not shut down
during the replacement. If there is a battery breaker then turn it off first. Disconnect the battery cable
carefully and make sure no any exposed wires can be touched. Reconnect the new batteries to the UPS
by following Section 3.5. Then turn on the battery breaker and press the ON switch to execute the
battery test, check whether the battery information is normal.
2.4.2 Maintenance, disposal and recycling
The battery maintenance shall be done by an authorized Service
Partner.
Batteries contain dangerous substances that will harm the environment
if thrown away. If you change the batteries yourself, call qualified
organizations for battery disposal and recycling.

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3 Installation
3.1 Delivery, Transportation and Storage
3.1.1 Receipt of the UPS and visual inspection
Upon receiving the UPS, carefully examine the packing container and the UPS for any sign of physical
damage. In case of damage, notify immediately the carrier.
The packing container of the UPS protects it from mechanical and environmental damage. To increase
its protection, the UPS is wrapped with a plastic sheet. Preserve the packaging for later re-use.
3.1.2 Unpacking
After examining the package, remove the foam and the plastic cover. Ensure that the received UPS
corresponds to the material indicated in the delivery note.
3.1.3 Storage of UPS
If you plan to store the UPS prior to use, keep it in a dry, clean and cool storage room with an ambient
temperature between (-15 °C to +60°C) and humidity of less than 95% non-condensing. If the packing
container is removed protect the UPS from dust.
Keep the UPS always in upright position and do not drop the equipment.
3.2 Site Planning and Positioning
3.2.1 Planning before the installation
The appropriate place of installation for the unit is to be selected in such a way that the danger of
damage to the UPS is minimized and a long service life of the device is thus ensured. Please observe
the following instructions:
- Install the UPS in the indoor area.
- Leave 25 cm of space on each side of the cabinet to enable cooling airflow and to ensure that the
circulation of air to the ventilation slits is not obstructed.
- Avoid excessively high temperature and excessive moisture.
3.3 General Characteristics
3.3.1 Front View
1kVA 2-3 kVA
Figure 1: Front View 1-3kVA

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3.3.2 Back View
UPS with internal batteries UPS without internal batteries
Figure 2: Back View of 1kVA
UPS with internal batteries UPS without internal batteries
Figure 4: Back View of 2kVA

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UPS with internal batteries UPS without internal batteries
Figure 6: Back View of 3kVA
3.4 Electrical Installation
3.4.1 Commissioning
The UPS must be commissioned by a fully trained and authorized field service engineer before being put
into use. The commissioning of the UPS involves the connection of the UPS and batteries, the
verification of the electrical installation and operating environment of the UPS, the controlled start-up and
testing of the UPS and customer training.
WARNING!
OPERATIONS INSIDE THE UPS MUST BE PERFORMED BY A SERVICE
ENGINEER FROM THE SUPPLIER OR FROM AN AGENT AUTHORIZED
BY THE SUPPLIER.
DO NOT OPERATE IN CASE OF PRESENCE OF WATER OR MOISTURE.
BY OPENING OR REMOVING THE UPS-COVERS YOU ARE EXPOSED TO
DANGEROUS VOLTAGES
3.4.2 UPS Input Cabling
Connection of the Earth is performed in accordance with the prescribed IEC Standards or with local
regulations.
Provide input fuses and cables according to the information below or in accordance with the prescribed
IEC Standards or with the local regulations. The circuit breakers will be connected between the mains
supply and the UPS and will provide additional protection to the UPS in the event of overloads and short
circuits. Choose the breaker according to the voltage and current indicated in Table 2.
Model
UPS Input Breaker
Voltage
Current
1kVA
300Vac
10A
2kVA
300Vac
20A
3kVA
300Vac
32A

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Table 2: UPS Input NFB
If the UPS is connected through a power cord, use a socket with protection against electric current with
the following capacities: over 9A for 1kVA, over 17A for 2kVA, over 26A for 3kVA. If the UPS is
connected through wires, connect first the ground (GND) terminal using a green or a yellow wire and
then connect the input phase wire. Use wires of at least 2.5mm2.
3.4.3 UPS Output Cabling
The output socket of the UPS is IEC-type. Plug the load power cord to the output sockets to complete
the connection. Use one cord for every 10A load.
Model
Output Socket (qty)
1KVA
3 x IEC-type
2KVA
6 x IEC-type
3KVA
4 x IEC-type +Terminal block
Table 3: Output socket configuration
When using the output terminal blocks for wiring the UPS, use 2.5mm2wires.
- Remove the cover of the terminal block and connect the UPS to the load.
- Check if the wires are safely fixed and put the cover back to the rear panel.
WARNING!
DO NOT CONNECT EQUIPMENT THAT WOULD OVERLOAD THE UPS
(EG. LASER PRINTERS)
3.4.4 Emergency Power Off (EPO)
The EPO connector gives the user the possibility to block the output of the
UPS in case of an emergency. This connector can be configured as Normally
Closed (NC) of Normally Opened (NO) through the USB or RS232 port. As a
default the EPO is Normally Closed (NC).
Normally closed
The EPO connector is normally closed by a jumper in the rear panel. If the jumper is removed, the UPS
output will not supply energy to the load until the EPO status is again modified.
Enable the EPO status Disable the EPO status
Normally opened EPO
The EPO connector is normally opened when the connector is not wired. If the connector is closed with a
wire / jumper, the UPS output will not supply energy to the load until the EPO status is again modified.
Disable the EPO status Enable the EPO status

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3.5 Battery charging
Fully charge the batteries of the UPS system by leaving the UPS system connected to the mains for 1-2
hours. You may use the UPS system directly without charging it but the stored energy time may be
shorter than the nominal value specified.
3.6 Connecting external batteries (Models without in-built batteries)
WARNING!
ANY INCOMPLIANCE MAY RESULT IN THE RISK OF ELECTRIC SHOCK.
FOLLOW THE INSTRUCTIONS
The UPS system may be used immediately after its installation without charging the batteries. However,
the stored energy may be smaller than the nominal specified implying in lower initial autonomy. To fully
charge the batteries, connect the UPS system to the mains for 1-2 hours.
Use the battery pack with voltage: 36VDC for 1kVA (3x12V batteries), 96VDC for 2kVA/ 3kVA (8x12V
batteries). Connection of batteries with voltages higher or lower than required can cause abnormality or
permanent damage.
Follow the steps below to connect the external batteries to the UPS.
1) Switch the battery breaker OFF.
2) Make sure the mains input is not present
3) Remove the cover of terminal block on the rear of the UPS and prepare the battery cable which
should be able to carry the current of >30A for 1kVA, >22A for 2kVA, >33A for 3kVA. The cross section
area should be great than 4 mm2for all models.
The following battery wire coloring is recommended:
＋
GND
－
Red wire
Green/Yellow wire
Black wire
4) Connect the red wire to the "+" terminal of the battery and the black wire to the "-" terminal of the
battery. (Note: the green/yellow wire is grounded for protection purpose.)
5) Make sure the wires are fasten and install the terminal block cover on the rear panel of the UPS.
6) Connect the UPS to the load. Then turn on the mains switch or connect the power cord of the UPS to
the power supply. The battery charging process will then be started.
WARNING!
A DC BREAKER MUST BE CONNECTED BETWEEN THE UPS AND
EXTERNAL BATTERY.
THE OUTPUT SOCKETS OF THE UPS SYSTEM MAY STILL BE
ELECTRICALLY LIVE EVEN IF THE POWER SUPPLY SYSTEM HAS BEEN
DISCONNECTED OR THE BYPASS SWITCH IS ON “OFF” POSITION.
For the dimensioning of the DC breaker, consider the voltages and currents indicated in Table 4.
Model No.
DC breaker
Voltage
Current
1KVA
48Vdc
50A
2KVA
125Vdc
40A
3KVA
125Vdc
60A
Table 4: DC breaker

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3.7 Installation Checklist
All packing materials and restraints have been removed from the UPS cabinet.
The UPS system is placed in the installed location.
All conduits and cables are properly routed to the UPS.
All power cables are properly sized and terminated.
A ground conductor is properly installed.
If not using all wiring terminals, the provided protective covers are installed on the cabinet.
Battery cabinet installation instructions have been completed.
Air conditioning equipment is installed and operating properly.
The area around the installed UPS system is clean and dust-free. (It is recommended that the
UPS be installed on a level floor suitable for computer or electronic equipment.
Adequate workspace exists around the UPS.
Adequate lighting is provided around all UPS equipment.
Any optional accessories are mounted in their installed location and properly wired.
Start-up and operational checks have been performed by authorized service personnel.
3.8 Turning on the UPS
With utility power:
Press ON button continuously for more than 1 second to turn on the UPS. The UPS will function in
inverter mode and the LCD screen will indicate the UPS status.
Without utility power (Cold start)
If the utility power is not present, press ON button twice. The first time the button ON is pressed, the
UPS is powered. The second time the button ON is pressed for more than 1 second, the UPS is set to
inverter mode.
Note: By default the UPS automatic bypass is disabled. If your mains supply is usually stable, enable the
bypass in the settings menu of the UPS (See section Error! Reference source not found.).
3.9 Battery test
Press the switch ON for more than 1 second to test if the battery is connected or if the battery is low.
This test can be done automatically and periodically according to the user configuration.
3.10 Turning off the UPS
From Inverter Mode
Press the OFF button continuously for more than 1 second to turn off the UPS. If the bypass mode is
disabled, the power is absent in the output. In case the bypass is enabled, the UPS will go into bypass
mode. Disconnect the utility power to remove the power from the output.
From Battery Mode
Press OFF button continuously for more than 1 second to turn off the UPS. Power will be then absent in
the output of the UPS.

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3.11 Silencing the audible alarm
In battery mode, the alarm sounds continuously. To silence it, press the ON button continuously for more
than 1 second.
Whenever the batteries are low, the alarm sounds to indicate that the load will be disconnected.
In bypass mode, press OFF button continuously for more than 1 second to silence the alarms. This
action does not affect the warning and alarms.

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4 OPERATION
This chapter describes how to operate the UPS through the LCD display.
WARNING!
ONLY PERSONS WHICH HAVE BEEN TRAINED BY SERVICE
TECHNICIANS OF THE SUPPLIER OR HIS AUTHORIZED SERVICE
PARTNERS ARE ALLOWED TO OPERATE THE CONTROL PANEL OF THE
UPS.
ALL OTHER INTERVENTIONS ON THE UPS SYSTEM HAVE TO BE DONE
ONLY BY SERVICE TECHNICIANS OF THE SUPPLIER.
The only user permitted operations are:
Operate the LCD display
Start up and shut down of the UPS of the user field (excluding the commissioning start up)
Operation of additional SNMP adapters and their software
4.1 Control Panel
The user-friendly control panel is composed of two parts:
Selection Keys
Power Management LCD Display (PMD)
Figure 3: Control Panel
4.1.1 Selection Keys
Select
If UPS is on Bypass or OFF, the UPS voltage and frequency can be selected
through this key. The bypass can be also enabled or disabled through the Select
Key.
Enter
Confirms the parameters selected through the Select Key
OFF
Turns off the inverter of the UPS when pressed for more than 1 sec.
- If mains is present, the UPS switches to bypass mode
- If mains is not present, the UPS is turned off. Note that if the bypass mode is
disabled, the UPS will shut down when the OFF key is selected.
ON / Silence Alarm
Turns on the UPS System, deactivates acoustic alarms in battery mode and
performs the battery test (in online mode, ECO mode or converter mode).

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4.1.2 LCD Display
The LCD display gives the user a complete overview on the status of the UPS. It shows information
regarding the input, output, battery, load parameters, working mode and the settings on voltage,
frequency and bypass presence.
Figure 4: The LCD Display
Input
Indicates the input line voltage value.
Indicates the frequency value of input line voltage.
Indicates that the input line voltage is higher than the specified range: UPS in
Battery mode.
Indicates that the input line voltage is lower than the specified range: UPS in
Battery mode.
Indicates the presence of the mains.
Indicates that the mains is not present
Output
(*)
Indicates the UPS output voltage value.
Indicates the frequency of the UPS output voltage
Indicates the presence of power in the output
Indicates that there is no power in the output of the UPS.
(*) In the User Settings, this filed is used to configure the operation mode.
“UPS” means the setting of normal inverter mode (Line mode).
“ECO” means the setting of economy mode.
“CVF” means the setting of converter mode.
The detail illustration of the three modes and the operation of the setting are presented in the following
section.

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Load
Indicates the load percentage in Watt or Volt-Ampere
Indicates that the output is short circuited and that the UPS could shutdown
Indicates that the load is over the specified range.
Indicates the load percentage. Each grid represents 25% load.
Indicates the load is over the specified range.
Battery
Indicates the battery DC voltage value.
Indicates the battery capacitance percent, and every grid represent 25%
capacitance.
Indicates that the UPS is in the battery mode and that the battery is
discharging.
Indicates that the battery is over charged. In this case, the UPS switches to
Battery mode.
Indicates low battery autonomy.
Mode/Fault/Warning
Indicates the operating mode of the UPS: Mode code, Fault code or Warning
code. For more information on the codes, see Chapter Troubleshooting.
Indicates that the UPS is working in bypass mode.
Indicates absence of power in the output of the UPS.
Indicates that the UPS is working in online mode.
Indicates that the UPS is working in battery mode.
Indicates that the UPS is in fault mode.
Indicates that the UPS is running under warnings.
Indicates a failure which that can be identified by the fault codes in Section 6.
Parameters Selection
The parameters below can be set while the UPS is running or bypass or is turned off.
The user can select one of four output voltages (208, 220, 230 or 240Vac).
Note that there is a 10% de-rating when this voltage is set to 208Vac.
The user can select one of two frequency values for the output (50 or 60z).
The user can enable or disable the bypass of the UPS.

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4.2 Operation
The different codes could be displayed on the LCD screen corresponding to their own operating modes,
and they are illustrated as the following table. At any time, only one normal operating mode or fault mode
is presented. But the warning, even several warnings could appear in a certain normal operating mode at
one time. And the normal operating mode code and the warning code would be shown circularly. Once
one fault is come forth, then all previous warnings would not be shown again but only the fault code is
presented.
Operating mode
Code
Output off or EPO
0
Bypass mode
1
Online mode
2
Battery mode
3
Battery test mode
4
ECO mode
5
Converter mode
6
Table 5: Code of the normal operating mode
4.2.1 Output off or EPO mode –Code 0
Output Off
The LCD display of a UPS in “Output off” mode is shown in Figure 5. The information on the mains,
battery, UPS output and load will be displayed and the code “0” will indicate that the UPS is not
supplying energy to the load even if the batteries may be charging.
EPO (Emergency Power Off)
The mode code “0” and the word “EPO” are shown in the LCD display when the Emergency Power Off is
activated. In this mode, the UPS is under alarming situation and can only be shut down after changing
the status of the EPO switch in the rear of the UPS.
Figure 5: LCD display for UPS with output off