3. Operations
3-1. Button Operation
3.2. LED Indicators and Lcd Panel
3-4. Single UPS Operation
1. Turn on the UPS with utility power supply
1). After power supply is connected correctly, set the breaker of the battery pack at
“ON” position (the step only available for long-run model). Then set the line input
breaker at “ON” position (for dual input unit, also set the bypass input breaker at
“ON”). At this time the fan is running and the UPS enter to power on mode for
initialization, several seconds later, UPS operates in Bypass mode and supplies
power to the loads via the bypass.
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 0.5second 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, 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-run
model).
2) Press the “ON” button to set up the power supply for the UPS, UPS will enter to
power on mode. After initialization UPS will enter to No Output mode, then 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.
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 an 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 environent temperature and load type.
5) When setting backup time for 16.5 hours (defaut value from LCD panel), after
discharging 16.5 hours, UPS will shut down automatically to protect the battery.
this battery discharge protection an be enabled or disabled through LCD panel
control. (Refer to 3-7 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 1 : If the UPS has been set to enable the bypass output, it will bypass voltage
from utilitypower to output terminal even though you have turned off the
UPS (inverter).
NOTE 2 : 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 line input breaker (for dual input unit, also switch off the
bypass line 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 warning indicator
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.
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 warning indicator
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.
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 line input breaker (for dual input unit, also switch off the bypass
input breaker), and switch off the battery breaker (only available for long-run
model).
4) Remove the cabinet cover, and disconnect battery wire for standard model. Then
modify the jumper of JS3 on the control board to set the battery numbers as
following table.
5) Modify the battery pack for the setting number carefully. After complete it, put the
cover back, switch on the battery breaker for long-run model.
6) Switch on the line input breaker (for dual input unit, also switch on the bypass 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.
3-5. Parallel Operation
1. Parallel system initial startup
First of all, please make sure all of the UPSs are parallel models and have the same
configuration.
1) Turn on each UPS to AC mode respectively (Refer to section 3-4(1)). Then,
measure the inverter output voltage of each phase for each UPS to check if
the inverter voltage difference between actual output and setting value is less
than 1.5V (typical 1V) with multimeter. If the difference is more than 1.5V,
please calibrate the voltage by configuring inverter voltage adjustment (Refer to
Program 15, 16 and 17, section 3-7) in LCD setting. If voltage difference
remains more than 1.5V after calibration, please contact your local distributor or
service center for help.
2) Calibrate the output voltage measurement by configuring output voltage
calibration (Refer to Program 18, 19, and 20, section 3-7) in LCD setting to make
sure the difference between real output voltage and detected value of UPS is les
than 1V.
3) Turn off each UPS (Refer to section 3-4(7.)). Then, follow the wiring procedure
in section 2-4.
4) Remove the cover of parallel share current cable port on the UPS, connect each
UPS one by one with the parallel cable and share current cable, and then screw
the cover back.
5) Turn on the parallel system in AC mode :
a) Turn on the line input breaker of each UPS (for dual input, also turn on bypass
input breaker). After all UPSs enter to bypass mode, measure the output
voltage between two UPS for the same phase to make sure the phase
sequence is correct . If these two voltage differences are near to zero, that
means all connections are correct. Otherwise, please check if the wirings are
connected correctly.
b) Turn on the output breaker of each UPS.
c) Turn on each UPS in turns. After a while, the UPSs will enter to AC mode
synchronously and then, the parallel system is completed.
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