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3.1.2 Standby/Manual Bypass Button
The Standby/manual Bypass button controls output power to connected load(s) and has two functions (see Table 5).
Table 5: Functions of Standby/Manual Bypass Button
Function
Manual Bypass
Press the button once and hold it for about 2 seconds
Press the button twice within 4 seconds (hold for at least a
Standby
half a second each time) while the UPS is in manual Bypass
or Battery mode
3
if the bypass is not available due to voltage or frequency, pressing this button once will be ignored
Perform all necessary shutdown procedures on connected loads before turning off the UPS
4
3.2 Indicators
The operation and display panel has seven indicators (see Figure 23). The indicators can be divided into two groups
according to the applications: level indicators and UPS status indicators.
3.2.1 Battery Level Indicators
The Battery Level indicator is composed of five sets of LED bars that illuminate and flash to indicate the battery capacity
level. The S4K2U-5C battery capacity level is shown in 20% increments (± 5%). The Battery Level indicators will illuminate
as shown in Figure 24.
0 - 20%
21 - 40%
41 - 60%
61 - 80%
81 - 100%
Fully
Charged
Figure 24: Battery Level indicators
Operation
4
Charging
Flash OFF
OFF
OFF
ON
Flash
OFF
OFF
ON
ON
Flash OFF
ON
ON
ON
Flash
ON
ON
ON
ON
ON
ON
ON
ON
S4K2U-5C SEriES USEr mAnUAL | 27
To initiate a manual transfer of the connected loads to the
3
internal bypass, if available
To shutdown the UPS and shut off all power to the
connected loads
Discharging
OFF
ON
OFF
ON
OFF
ON
OFF
ON
Flash
ON
ON
ON
Description
OFF
OFF
OFF
OFF
ON
OFF
OFF
OFF
ON
ON
OFF
OFF
ON
ON
ON
OFF
ON
ON
ON
ON
ON
ON
ON
ON
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Troubleshooting
