4. Operation
4.3 Audible Alarm
Description
UPS status
Bypass mode
Battery mode
Fault mode
Warning
Overload
All other warnings
Fault
All
4.4 Single UPS Operation
4.4.1 Turning the UPS on (Online mode)
1) Once the power supply is connected correctly, switch the UPS input breaker to "ON" position. At this time, the fan will be running
and the UPS will proceed to power-on mode for initialization. Several seconds later, the UPS will operate in Bypass mode and supply
power to the connected loads via the bypass.
Note: In Bypass mode, the load is not protected by the UPS. To protect connected devices, turn on the UPS as shown in Step 2.
2) Press and hold the "ON" button for 0.5 seconds to turn on the UPS. The buzzer will beep once.
3) A few seconds later, the UPS will enter Online mode. If utility power is abnormal, the UPS will operate in Battery mode without
interruption.
Note: When the UPS is running low on battery power, it will shut down automatically in Battery mode. The UPS will auto restart in Online mode as
soon as utility power is restored.
4.4.2 Turning on the UPS without utility power supply (Battery mode)
1) Make sure that the battery pack breaker is set to "ON" position.
2) Press the "ON" button to set up the power supply for the UPS. The UPS will enter power-on mode. After initialization, the UPS will
enter Standby mode. When this happens, press and hold the "ON" button for 0.5 seconds to turn on the UPS. The buzzer will beep
once.
3) A few seconds later, the UPS will be turned on and enter Battery mode.
4.4.3 Connecting devices to UPS
1) After the UPS has been turned on, devices may be connected and powered on one by one. The UPS system's LCD panel will display
the total load level.
2) When connecting devices with inductive loads (such as a printer), the in-rush current should be calculated carefully to confirm it
meets the capacity of the UPS. Power consumption of such loads may cause an overload.
3) If the UPS is overloaded, the buzzer will beep twice every second.
4) In case of overload, remove non-essential devices immediately. It is recommended to have the total load connected to the UPS no
more than 80% of its nominal power capacity to prevent overload and ensure system safety.
5) If the overload time is higher than the acceptable time listed in Online mode, the UPS will automatically transfer to Bypass mode.
After the overload is removed, it will return to Online mode. If the overload time is higher than acceptable time listed in Battery mode,
the UPS will go to fault status. At this time, if the bypass is enabled, the UPS will supply power to the load via bypass. If the bypass
function is disabled or the input power is not within acceptable bypass range, it will cut off output directly.
4.4.4 Charging 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) It is recommended to charge the batteries at least 10 hours prior to use. Otherwise, the backup time may be shorter than expected.
Buzzer status
Beeps once per 2 seconds.
Beeps once per 4 seconds.
Beeps continuously.
Beeps twice per second.
Beeps once per second.
Beeps continuously.
13
Mutable
Yes
No
Yes