User Manual

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Operation
Transferring from Bypass to Normal Mode
To transfer from Bypass to Normal mode:
1 Press the button for longer than one second to go to the main menu selection and scroll down to
the Control menu using the
button.
2 Press the button to enter the Control menu.
3 Select Go to Normal.
The text on the screen changes to Normal Command Sent. The Normal mode icon
flashes,
indicating Normal mode.
Setting the Power Strategy
The UPS has the following power strategy settings:
S Normal. The UPS operates in Normal mode (powering the load from utility power).
S High Efficiency. The UPS operates in High Efficiency mode (powering the load from the bypass
source but ready to transfer to Normal mode as needed). The UPS is highly sensitive to line
fluctuations and transfers out of High Efficiency mode at ±5% of nominal voltage or ±1% of
nominal frequency. If the UPS transfers to Normal mode, the UPS automatically transfers back to
High Efficiency mode after five minutes of stable power. Transfers to High Efficiency mode are
limited to three times in one hour.
S Converter. The UPS operates as a frequency converter, powering the load from acceptable utility
power while providing a stable output frequency. Bypass operation and bypass-related alarms are
disabled.
Table 8 describes the UPS behavior in Converter mode in detail. To set the output frequency, see
“Settings” on page 48.
To set the power strategy, complete the following steps:
1 Make sure that the UPS is in Standby mode.
2 From the main menu, press the button to scroll to the Settings menu, and press the OK button.
3 Press the button to scroll to Power Strategy, and press the OK button.
4 Press the button to select the power strategy that you want to set and press the OK button.
5 Press the OK button for one second to confirm.
NOTE:
The UPS tests the bypass source for five consecutive minutes of stable power before it transfers to High
Efficiency mode.