Xtreme Power Conversion Corporation
TX91 3.8- 10kVA User’s Manual
Page 20
Uninterruptible Power Supply
3. The backup time may very from different environment temperature and load type.
4. The backup time depends on the quantity external batteries.
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 3.3 LCD Settings section)
Test the batteries
1. If you need to check the battery status when the UPS is running in AC mode/CVCF mode/ECO mode, you
could press the “Test” button to let the UPS do battery self-test.
2. To keep the system reliable, the UPS will perform the battery self-test automatically periodically. The
default setting period is once per week.
3. Users also can set battery self-test through monitoring software.
4. If the UPS is at battery self-test, the LCD display and buzzer indication will be the same as at Battery
mode except that the battery LED is flashing.
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 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
input breaker. A few seconds later, there is no display shown on the display panel and UPS is completely
off.
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.
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.
Operation in warning status
1. When Fault LED flashes and the buzzer beeps once every second, it means that there are some prob
-
lems for UPS operation. Users can get the fault code from LCD panel. Please check the trouble shooting
table in section 4 for details.
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 section 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 dis
-
tributor 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.
