22
UPS will shut down automatically to protect the battery. This battery discharge protection can be
enabled or disabled through LCD panel control. (Refer to 3-7 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 refer
to
Screen 1.1-2
.
2) Users also can set battery self-test through monitoring software.
7. Turn off the UPS with utility power supply in AC mode
1) Refer to
Screens 1.1-1
.
NOTE 1:
If the UPS has been set to bypass output, it will bypass voltage from the utility power 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) Refer to
Screens 1.1-1
.
2) Then UPS will cut off power to output and there is no display shown on the display panel.
9. Mute the buzzer
1) Refer to
Screen 1.1-3.
2) Some warning alarms can’t be muted unless the error is fixed. Please refer to section 3-3 for details.
10. Operation in warning status
1) When Fault LED illuminates and the buzzer beeps once every second, it means that there are 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 details.
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 issue. If the problems can’t be fixed, please contact the
distributor or service personnel immediately.
3) For emergency case, please cut off connection from utility, external battery, and output immediately to
avoid more risk or danger.
12. Operation in maintaining bypass mode
This operation is only available for professional or qualified technicians.
When the UPS needs to repair or service and then the load can’t be shut off, the UPS needs to turn to
maintenance mode.
1) First, turn off the UPS.
2) Second, remove the cover of maintenance bypass switch on the panel.
3) Third, turn the maintenance switch to “BPS” position and turn off the UPS input breaker and output
breaker.
3-5. Parallel Operation
1. Parallel system initial startup
Please make sure that all of the running UPSs are parallel models and have the same configuration.
1)
Turn on each UPS in AC mode respectively (Refer to section 3-4(1)). Then, measure the inverter output
voltage of each phase for each UPS to if the inverter voltage difference between actual output and
