Powerbank KNIGHT ONLINE SERIES User manual

USER’S MANUAL
KNIGHT ONLINE SERIES
UPS
220V
1000 (L) / 2000 (L) / 3000 (L)
Uninterruptible Power Supply System

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Contents
1. SAFETY WARNING........................................................................................................................................... 2
1-1. TRANSPORTATION .......................................................................................................................................... 2
1-2. PREPARATION................................................................................................................................................ 2
1-3. INSTALLATION ................................................................................................................................................ 2
1-4. OPERATION ................................................................................................................................................... 2
1-5. MAINTENANCE,SERVICE AND FAUILTS ............................................................................................................. 3
2. INSTALLATION AND SETUP............................................................................................................................ 4
2-1. REAR PANEL VIEW .......................................................................................................................................... 4
2-2. SINGLE UPS INSTALLATION .............................................................................................................................. 5
2-3. SOFTWARE INSTALLATION ............................................................................................................................... 7
3. OPERATIONS .................................................................................................................................................... 8
3-1. LCD PANEL ................................................................................................................................................... 8
3-2. BUTTON OPERATION....................................................................................................................................... 8
3-3. LED INDICATORS AND LCD PANEL ................................................................................................................ 10
3-4. AUDIBLE ALARM ......................................................................................................................................... 110
3-5. SINGLE UPS OEPRATION............................................................................................................................ 131
3-6. LCD DISPLAY WORDINGS INDEX ................................................................................................................. 143
3-7. LCD MAIN INTERFACE……………………………………………………………………………………………….14
3-8. OPERATING MODE DESCRIPTION ................................................................................................................... 20
3-9. FAULT CODE ............................................................................................................................................... 20
3-10. WARNING INDICATOR ............................................................................................................................... 211
4. TROUBLE SHOOTING.................................................................................................................................... 21
5. STORAGE AND MAINTENANCE.................................................................................................................... 24
6. SPECIFICATIONS............................................................................................................................................ 25

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1. Safety Warning
Please comply with all warnings and operating instructions in this manual strictly. Save this
manual properly and read carefully the following instructions before installing the unit. Do not
operate this unit before reading through all safety information and operating instructions
carefully
1-1. Transportation
Please transport the UPS system only in the original package to protect against
shock and impact.
1-2. Preparation
Condensation may occur if the UPS system is moved directly from cold to warm
environment. The UPS system must be absolutely dry before being installed. Please
allow at least two hours for the UPS system to acclimate the environment.
Do not install the UPS system near water or in moist environments.
Do not install the UPS system where it would be exposed to direct sunlight or near
heater.
Do not block ventilation holes in the UPS housing.
1-3. Installation
Do not connect appliances or devices which would overload the UPS system (e.g.
laser printers) to the UPS output sockets.
Place cables in such a way that no one can step on or trip over them.
Do not connect domestic appliances such as hair dryers to UPS output sockets.
The UPS can be operated by any individuals with no previous experience.
Connect the UPS system only to an earthed shockproof outlet which must be easily
accessible and close to the UPS system.
Please use only VDE-tested, CE-marked mains cable (e.g. the mains cable of your
computer) to connect the UPS system to the building wiring outlet (shockproof
outlet).
Please use only VDE-tested, CE-marked power cables to connect the loads to the
UPS system.
When installing the equipment, it should ensure that the sum of the leakage current
of the UPS and the connected devices does not exceed 3.5mA.
1-4. Operation
Do not disconnect the mains cable on the UPS system or the building wiring outlet
(shockproof socket outlet) during operations since this would cancel the protective
earthing of the UPS system and of all connected loads.
The UPS system features its own, internal current source (batteries). The UPS
output sockets or output terminals block may be electrically live even if the UPS
system is not connected to the building wiring outlet.
In order to fully disconnect the UPS system, first press the OFF/Enter button to
disconnect the mains.
Prevent no fluids or other foreign objects from inside of the UPS system.

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1-5. Maintenance, service and faults
The UPS system operates with hazardous voltages. Repairs may be carried out only
by qualified maintenance personnel.
Caution - risk of electric shock. Even after the unit is disconnected from the mains
(building wiring outlet), components inside the UPS system are still connected to the
battery and electrically live and dangerous.
Before carrying out any kind of service and/or maintenance, disconnect the batteries
and verify that no current is present and no hazardous voltage exists in the terminals
of high capability capacitor such as BUS-capacitors.
Only persons are adequately familiar with batteries and with the required
precautionary measures may replace batteries and supervise operations.
Unauthorized persons must be kept well away from the batteries.
Caution - risk of electric shock. The battery circuit is not isolated from the input voltage.
Hazardous voltages may occur between the battery terminals and the ground. Before
touching, please verify that no voltage is present!
Batteries may cause electric shock and have a high short-circuit current. Please take
the precautionary measures specified below and any other measures necessary
when working with batteries:
－remove wristwatches, rings and other metal objects
－use only tools with insulated grips and handles.
When changing batteries, install the same number and same type of batteries.
Do not attempt to dispose of batteries by burning them. This could cause battery
explosion.
Do not open or destroy batteries. Escaping electrolyte can cause injury to the skin
and eyes. It may be toxic.
Please replace the fuse only with the same type and amperage in order to avoid fire
hazards.
Do not dismantle the UPS system.

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2. Installation and set up
NOTE: Before installation, please inspect the unit. Be sure that nothing inside the package is
damaged. Please keep the original package in a safe place for future use.
NOTE: There are two different types of online UPS: standard and long-time models. Please
refer to the following model table.
Model Type Model Type
6K(R) 6K(R)L
10K(R) Standard 10K(R)L Long-time
2-1. Rear Panel View
Diagram1 : 6K/10K Rear Panel Diagram 2 : 6K(L)/10K(L) Rear Panel
Diagram 3 : 6K(L)/10K(L) Input/Output Terminal
Diagram 4 : 6K(L)/10K(L) Rear Panel Diagram 5 : Rack Input/Output Terminal

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Diagram 6 : Rack Battery Pack Rear Panel
1. External battery connector
2. RS-232 communication port
3. Intelligent slot
4. USB communication
5. Emergency power off function connector (EPO connector)
6. Cooling fan
7. Input circuit breaker
8. Input/Output terminal (Refer to Diagram 3 and 5 for the details)
9. Maintenance bypass switch
10. Output terminal
11. Grounding terminal
12. Utility input terminal
13. External maintenance bypass switch port
14. Battery pack output circuit breaker
2-2. Single UPS Installation
Installation and wiring must be performed in accordance with the local electric laws/regulations and execute
the following instructions by professional personnel.
1) Make sure the mains wire and breakers in the building are in compliance with the standard of rated
capacity of UPS to avoid the hazards of electric shock or fire.
NOTE: Do not use the wall receptacle as the input power source for the UPS, as its rated current is less
than the UPS’s maximum input current. Otherwise the receptacle may be burned and destroyed.
2) Switch off the mains switch in the building before installation.
3) Turn off all the connected devices before connecting to the UPS.
4) Prepare wires based on the following table:
Wiring spec (AWG)
Model
Input Output Battery Ground
6K 10 10 10
6KL 10 10 10 10
10K 8 8 8
10KL 8 8 8 8

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NOTE 1: The cable for 6K/6KL should be able to withstand over 50A current. It is recommended to
use 10AWG or thicker wire for safety and efficiency.
NOTE 2: The cable for 10K/10KL should be able to withstand over 63A current. It is recommended to
use 8AWG or thicker wire for safety and efficiency.
NOTE 3: The selections for color of wires should be followed by the local electrical laws and
regulations.
5) Remove the terminal block cover on the rear panel of UPS. Then connect the wires according to the
following terminal block diagrams: (Connect the earth wire first when making wire connection. Disconnect
the earth wire last when making wire disconnection!)
Terminal Block wiring diagram for 6K(L)/10K(L)
NOTE 1: Make sure that the wires are connected tightly with the terminals.
NOTE 2: Please install the output breaker between the output terminal and the load, and the breaker
should be qualified with leakage current protective function if necessary.
6) Put the terminal block cover back to the rear panel of the UPS.
Warning: (Only for standard model)
●Make sure the UPS is not turned on before installation. The UPS should not be turned on during wiring
connection.
●Do not try to modify the standard model to the long-run model. Particularly, do not try to connect the
standard internal battery to the external battery. The battery type and voltage and numbers may be
different. If you connect them together, it maybe causes the hazard of electric shock or fire!
Warning: (Only for long-time model)
●Make sure a DC breaker or other protection device between UPS and external battery pack is installed.
If not, please install it carefully. Switch off the battery breaker before installation.
Warning:
●For standard battery pack, there are one DC breaker to disconnect the battery pack and the UPS. But
for other external battery pack, make sure a DC breaker or other protection device between UPS and
external battery pack is installed. If not, please install it carefully. Switch off the battery breaker before
installation.
NOTE: Set the battery pack breaker in “OFF” position and then install the battery pack.
Input Neutral
Input Line
Ground
Output Line
Output Neutral

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●Pay highly attention to the rated battery voltage marked on the rear panel. If you want to change the
numbers of the battery pack, please make sure you modify the setting simultaneously. The connection
with wrong battery voltage may cause permanent damage of the UPS. Make sure the voltage of the
battery pack is correct.
●Pay highly attention to the polarity marking on external battery terminal block, and make sure the
correct battery polarity is connected. Wrong connection may cause permanent damage of the UPS.
●Make sure the protective earth ground wiring is correct. The current spec, color, position, connection
and conductance reliability of wire should be checked carefully.
●Make sure the utility input & output wiring is correct. The current spec, color, position, connection and
conductance reliability of wire should be checked carefully. Make sure the L/N terminal is correct, not
reverse or short-circuited.
2-3. Software Installation
For optimal computer system protection, install UPS monitoring software to fully configure UPS shutdown.
Please insert the provided CD into CD-ROM to install the monitoring software.

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3. Operations
3-1. LCD panel
3-2. Button operation
Button Function
ON/Enter Button
Turn on the UPS: Press and hold the button more than 0.5s to turn on the
UPS.
Enter Key: Press this button to confirm the selection in setting menu.
OFF/ESC Button
Turn off the UPS: Press and hold the button more than 0.5s to turn off the
UPS.
Esc key: Press this button to return to last menu in setting menu.
Test/Up Button
Battery test: Press and hold the button more than 2s to test the battery while in
AC mode, or CVCF mode (converter mode)
UP key: Press this button to display next menu or selection.
Mute/Down Button
Mute the alarm: Press and hold the button more than 2s to mute the buzzer.
Please refer to section 3-4-9 for details.
Down key: Press this button to display previous menu or selection.
Test/Up +
Mute/Down Button
Press and hold the two buttons simultaneous more than 1s to enter/escape the
setting menu.

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Display Function
Estimated or running time setting and information
Remaining backup time.
Running time.
Remaining backup / Running time in numbers.
H: hour, M: minute, S: Second
Warning and Fault information
Warning occurred.
Fault occurred.
Codes for warning and fault.
Setting operation
Indicates that the setting occurs.
Mute operation
UPS alarm is disabled.
UPS information
Indicates the input and output voltage, frequency, battery voltage, load information,
and internal temperature.
V: input/output voltage/ battery voltage, Hz: frequency, %: load level,
°C: temperature, KW: active power, KVA: apparent power, A: output current,
Mode operation information
ONLINE mode.
BATTERY mode.
CONVERTER mode.
BYPASS mode.
ECO mode.
UPS is charging battery.
Load information
Load level under 0-25%, 26-50%, 51-75%, and 76-100%.
Overload.
Outlets with output voltage.
Load or UPS output with “short circuit.”
Battery information
Battery level under 0-25%, 26-50%, 51-75%, and 76-100%.
Charger is working.
Indicates battery.
Battery replacement necessary.
Low battery voltage.

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3-3. LED Indicators and LCD Panel
LED Indicators:
There are 4 LED light in the front panel to indicate the UPS working status:
Mode LED Bypass Line Battery Fault
UPS Startup ●●●●
Bypass mode ●○○○
AC mode ○●○○
Battery mode ○○●○
CVCF mode ○●○○
Battery Test ●●●○
Fault ○○○●
Note: ●LED lighting / ○LED faded
* When the UPS under bypass mode, but no bypass output voltage exists. Bypass LED will flicker.
3-4. Audible Alarm
Description Buzzer status Muted
UPS status
Bypass mode Beeping once every 2 minutes
Battery mode Beeping once every 4 seconds
Fault mode Beeping continuously
Yes
Warning
Overload Beeping twice every second
Others Beeping once every second No
Fault
All Beeping continuously
Yes
LCD panel
LED indicators

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3-5. Single UPS Operation
1. Turn on the UPS with utility power supply (in AC mode)
1) After power supply is connected correctly, set the breaker of the battery pack at “ON” position (the
step only available for long-time model). Then set the input breaker at “ON” position. At this time
the fan is running and the UPS supplies power to the loads via the bypass. The UPS is operating
in Bypass mode.
NOTE: When UPS is in Bypass mode, the output voltage will directly power from utility after you switch
on the input breaker. In Bypass mode, the load is not protected by UPS. To protect your precious
devices, you should turn on the UPS. Refer to next step.
2) Press and hold the “ON” button for 0.5s to turn on the UPS and the buzzer will beep once.
3) A few seconds later, the UPS will enter to AC mode. If the utility power is abnormal, the UPS will
operate in Battery mode without interruption.
NOTE: When the UPS is running out battery, it will shut down automatically at Battery mode.
When the utility power is restored, the UPS will auto restart in AC mode.
2. Turn on the UPS without utility power supply (in Battery mode)
1) Make sure that the breaker of the battery pack is at “ON” position (only for long-time model).
2) Press and hold the “ON” button for 0.5s to turn on the UPS, and the buzzer will beep once.
3) A few seconds later, the UPS will be turned on and enter to Battery mode.
3. Connect devices to UPS
After the UPS is turned on, you can connect devices to the UPS.
1) Turn on the UPS first and then switch on the devices one by one, the LCD panel will display total
load level.
2) If it is necessary to connect the inductive loads such as a printer, the in-rush current should be
calculated carefully to see if it meets the capacity of the UPS, because the power consumption of
this kind of loads is too big.
3) If the UPS is overload, the buzzer will beep twice every second.
4) When the UPS is overload, please remove some loads immediately. It is recommended to have
the total loads connected to the UPS less than 80% of its nominal power capacity to prevent
overload for system safety.
5) If the overload time is over acceptable time listed in spec at AC mode, the UPS will automatically
transfer to Bypass mode. After the overload is removed, it will return to AC mode. If the overload
time is over acceptable time listed in spec at Battery mode, the UPS will become fault status. At
this time, if bypass is enabled, the UPS will power to the load via bypass. If bypass function is
disabled or the input power is not within bypass acceptable range, it will cut off output directly.
4. Charge the batteries
1) After the UPS is connected to the utility power, the charger will charge the batteries automatically
except in Battery mode or during battery self-test.
2) Suggest to charge batteries at least 10 hours before use. Otherwise, the backup time may be
shorter than expected time.
3) Make sure the battery numbers setting on the control board (Please refer to the section 3-4-12 for
detailed setting) is consistent to real connection.
4) The charging current can be changed from 0.5A to 6A via LCD or software. Please make sure that
the charging current is suitable to battery specification.

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5. Battery mode operation
1) When the UPS is in Battery mode, the buzzer will beep according to different battery capacity. If
the battery capacity is more than 25%, the buzzer will beep once every 4 seconds; If the battery
voltage drops to the alarm level, the buzzer will beep quickly (once every sec) to remind users that
the battery is at low level and the UPS will shut down automatically soon. Users could switch off
some non-critical loads to disable the shutdown alarm and prolong the backup time. If there is no
more load to be switched off at that time, you have to shut down all loads as soon as possible to
protect the devices or save data. Otherwise, there is a risk of data loss or load failure.
2) In Battery mode, if buzzer sound annoys, users can press the Mute button to disable the buzzer.
3) The backup time of the long-run model depends on the external battery capacity.
4) The backup time may vary from different environment temperature and load type.
5) When setting backup time for 16.5 hours (default value from LCD panel), after discharging 16.5
hours, UPS will shut down automatically to protect the battery. This battery discharge protection
can be enabled or disabled through LCD panel control. (Refer to 3-6-2 LCD setting section)
6. Test the batteries
1) If you need to check the battery status when the UPS is running in AC mode/CVCF mode, you
could press the “Test” button to let the UPS do battery self-test.
2) Users also can set battery self-test through monitoring software.
7. Turn off the UPS with utility power supply in AC mode
1) Turn off the inverter of the UPS by pressing “OFF” button for at least 0.5s, and then the buzzer will
beep once. The UPS will turn into Bypass mode.
NOTE : If the UPS has been set to enable the bypass output, it will bypass voltage from utility power
to output sockets and terminal even though you have turned off the UPS (inverter).
NOTE : After turning off the UPS, please be aware that the UPS is working at Bypass mode and
there is risk of power loss for connected devices.
2) In Bypass mode, output voltage of the UPS is still present. In order to cut off the output, switch off
the input breaker. A few seconds later, there is no display shown on the display panel and UPS is
complete off.
8. Turn off the UPS without utility power supply in Battery mode
1) Turn off the UPS by pressing “OFF” button for at least 0.5s, and then the buzzer will beep once.
2) Then UPS will cut off power to output and there is no display shown on the display panel.
9. Mute the buzzer
1) To mute the buzzer, please press the “Mute” button for at least 0.5s. If you press it again after the
buzzer is muted, the buzzer will beep again.
2) Some warning alarms can’t be muted unless the error is fixed. Please refer to section 3-3 for the
details.
10. Operation in warning status
1) When Fault LED flashes and the buzzer beeps once every second, it means that there are some
problems for UPS operation. Users can get the fault code from LCD panel. Please check the
trouble shooting table in chapter 4 for details.
2) Some warning alarms can’t be muted unless the error is fixed. Please refer to section 3-3 for the
details.

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11. Operation in Fault mode
1) When Fault LED illuminates and the buzzer beeps continuously, it means that there is a fatal error
in the UPS. Users can get the fault code from display panel. Please check the trouble shooting
table in chapter 4 for details.
2) Please check the loads, wiring, ventilation, utility, battery and so on after the fault occurs. Don’t try
to turn on the UPS again before solving the problems. If the problems can’t be fixed, please
contact the distributor or service people immediately.
3) For emergency case, please cut off the connection from utility, external battery, and output
immediately to avoid more risk or danger.
12. Operation of changing battery numbers
1) This operation is only available for professional or qualified technicians.
2) Turn off the UPS. If the load couldn’t be cut off, you should remove the cover of maintenance
bypass switch on the rear panel and turn the maintenance switch to “BPS” position first.
3) Switch off the input breaker, and switch off the battery breaker (only available for long-run model),
or disconnect battery wire for standard model.
4) Remove the cabinet cover, and then modify the jumpers (JP1, JS3) on the control board to set the
battery numbers as following table:
JP1
Battery Number pin1 & pin2 pin3 & pin4 Pin5 & pin6 pin7 & pin8 JS3
16 X X 0 0 0
17 X X 1 1 0
18 X X 0 0 1
19 X X 1 0 1
20 X X 1 1 1
Note：1 = connect with jumper
0 = no jumper
x = the pins are for other functions.
5) Modify the battery pack for the setting number carefully. After complete it, put the cover back, and
switch on the battery breaker for long-run model.
6) Switch on the input breaker and the UPS will enter Bypass mode. If the UPS is in maintenance
Bypass mode, turn the maintenance switch to “UPS” position and then turn on the UPS.
3-6. LCD display wordings index
Display content Abbreviation Meaning
ENA Enable
DIS Disable
ATO Auto
ON On
OFF Off
FBD Not allowed
OPN Allow

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3-7. LCD Display
3-7-1. LCD Main Interface
Press up key or down key to select the displayed information.
1 Output Voltage
2 Output Frequency 3 Input Voltage
4 Input Frequency
5 Battery Voltage 6 Load Level
7 Output Current
8 Output Apparent Power 9 Output Active Power
10 Maximum Temperature
11 Warning Information

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3-7-2. UPS Setting
At the main interface; press and hold the “up” and “down” buttons simultaneous for more than 1 second to
enter or escape from setting menu.
Two parameters to set up the UPS.
Parameter 1: For program alternatives.
Parameter 2: Option setting or values for each
program.
Available programs list for parameter 1:
Code Description Bypass AC CVCF Battery Battery Test
01 Output voltage Y
02 CVCF mode enable/disable Y
03 Output frequency Y
04 Acceptable low voltage for bypass mode Y
05 Acceptable high voltage for bypass mode Y
06 Acceptable low frequency for bypass mode Y
07 Acceptable high frequency for bypass mode Y
08 Bypass mode forbidden/allowed Y
09 Manual bypass mode enable/disable Y
10 Battery backup time setting Y Y Y Y Y
11 Hot standby function enable/disable Y Y Y Y Y
12 Battery voltage calibration Y Y Y Y Y
13 Charger voltage calibration Y Y Y Y Y
14 Maximum charger current setting Y Y Y Y Y
15 Battery capacity setting Y Y Y Y Y
16 Battery group setting Y Y Y Y Y
17 Backup time calibration Y Y Y Y Y
18 Output voltage calibration Y Y Y Y
*Y means that this program can be set in this mode.
01: Output voltage
Interface Setting
Parameter 2: Output voltage
Output voltage can be chosen in parameter 2 as below:
208: output voltage is 208Vac
220: output voltage is 220Vac
230: output voltage is 230Vac
240: output voltage is 240Vac
Parameter 2
Parameter 1

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02: Frequency Converter enable/disable
Interface Setting
Parameter 2: Frequency mode
Setting output frequency at CVCF mode or not CVCF mode.
Two options can be chosen in parameter 2 as below:
ENA: Setting UPS to CVCF mode.
If selected, the output frequency will be fixed at 50Hz or 60Hz
according to “Output frequency setting”.
The input frequency could be from 46Hz to 64Hz.
DIS: Setting UPS to normal mode (not CVCF mode).
If selected, the output frequency will synchronize with the input
frequency within 46~54 Hz at 50Hz or within 56~64 Hz at 60Hz
according to setting in “Output frequency setting”.
If 50Hz is selected in “Output frequency setting”, UPS will
transfer to battery mode when input frequency is not within 46~54
Hz.
If 60Hz is selected in “Output frequency setting”, UPS will
transfer to battery mode when input frequency is not within 56~64
Hz.
03: Output frequency setting
Interface Setting
Parameter 2: Output Frequency
50.0Hz: output frequency is setting for 50.0Hz.
60.0Hz: output frequency is setting for 60.0Hz.
ATO: If selected, output frequency will be changed based on the
latest input utility frequency.
If it is within 46Hz and 54Hz, the output frequency will be 50.0Hz.
If it is within 56Hz and 64Hz, the output frequency will be 60.0Hz.
ATO is default setting.
If converter mode is enabled and output frequency is set to ATO
mode, it will display “A50” when UPS is working on 50Hz mode or
“A60” when UPS is working on 60Hz mode in LCD.
04: Acceptable low voltage for bypass
Interface Setting
Parameter 2: Set the acceptable low voltage for bypass.
Setting range is from 110V to 209V and the default value is 110V.
05: Acceptable high voltage for bypass mode
Interface Setting
Parameter 2: Set the acceptable high voltage for bypass.
Setting range is from 231V to 276V and the default value is 264V.

USER’S MANUAL
KNIGHT ONLINE SERIES
UPS
220V
6000(L) / 10000(L)
Uninterruptible Power Supply System

17
06: Acceptable low frequency for bypass mode
Interface Setting
Parameter 2: Set the acceptable low frequency for bypass.
50 Hz system: Setting range is from 46.0Hz to 49.0Hz.
60 Hz system: Setting range is from 56.0Hz to 59.0Hz.
The default value is 46.0Hz/56.0Hz.
07: Acceptable high frequency for bypass mode
Interface Setting
Parameter 2: Set the acceptable high frequency for bypass.
50 Hz: Setting range is from 51.0Hz to 54.0 Hz.
60 Hz: Setting range is from 61.0Hz to 64.0Hz.
The default value is 54.0Hz/64.0Hz.
08: Bypass mode forbidden/allowed
Interface Setting
Parameter 2: Allow or forbidden bypass mode
FBD: Bypass not allowed. When selected, it’s not allowed for
running in Bypass mode under any situations.
OPN: Bypass allowed. When selected, UPS will run at Bypass
mode depending on the setting of “Manual Bypass
enable/disable”
09: Manual bypass enable/disable
Interface Setting
Parameter 2:
ENA: Manual bypass enabled. When selected, bypass mode is
activated.
DIS: Manual bypass disabled. When selected, automatic bypass
is acceptable, but manual bypass is not allowed.
*Manual bypass means users manually operate UPS in Bypass
mode. For example, pressing “OFF” button in AC mode to turn the
UPS into Bypass mode.
10: Battery backup time setting
Interface Setting
Parameter 2:
001~999: Set the maximum backup time from 1 min to 999 min.
UPS will shut down to protect battery after backup time arrives.
The default value is 990.
DIS: Disable battery discharge protection and backup time will
depend on battery capacity.

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11: Hot standby function enable/disable
l.
Interface Setting
Parameter 2: Enable or disable hot standby function.
ENA: Hot standby function is enabled. It means that the current
UPS is set to host of the hot standby function, and it will restart
after AC recovery even without battery connected.
DIS: Hot standby function is disabled. The UPS is running at
normal mode and can’t restart without battery
12: Battery voltage calibration
Interface Setting
Parameter 2:
The voltage range is from -5.7V to 5.7V, the default value is 0V.
13: Charger voltage calibration
Interface Setting
Parameter 2: Voltage range is from -9.9V to 9.9V and the default
value is 0V.
NOTE:
Before making voltage adjustment, be sure to disconnect all
batteries first to get the accurate charger voltage.
Strongly suggest using the default value (0).
Any modification should be suitable to battery specifications.
14: Maximum charger current setting
Interface Setting
Parameter 2:
The maximum charging current could be adjusted.
Default value is 4A for long run model and 1A for standard model.
The setting range is 0.5A~6A for long run model, and 0.5A~2A for
standard model.
Note:
Any modification should be suitable to battery specifications.
If input voltage is below 200VAC, the ups will reduce charging
current to 4A automatically even though the setting is 6A.