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M0309_N_Series_ABS_700-3kVA_User_Manual V2.8 2012-06-12
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2.4.
Special Features
Efficiency Optimizer function
The Efficiency Optimizer function adds cost effectiveness, minimizes power loss and
reduces power consumption. Alternating between bypass and on-line modes is
achieved automatically and in accordance with the conditions of the utility AC power.
On-line mode may be used during times of intermittent power, and bypass mode
when the utility is within selectable parameters in order to obtain greatest efficiency.
Irregularities can be detected in less than a second, and on-line mode reactivated
immediately. Switching back to on-line mode occurs when input voltage is outside
±10% of nominal (± 15% selectable), when input frequency is outside of ±3Hz or
when no input utility is present.
Although high efficiency is standard, the default operation is in on-line mode. The
bypass can be activated in the LCD panel, though on-line can be run permanently if
preferred.
Free Run Mode
The UPS operates in free run mode when input frequency is outside of the selected
Input Frequency Setting (Chapter 6.5). Free run mode is when output frequency does
not match input frequency. When starting the UPS, the frequency regulation detected
is 50 or 60 Hz ±0.25Hz. Please refer to chapter 6.5 if you want bypass available while
running in free run mode.
Diagnostic tests
When you start the UPS, a diagnostic test is automatically executed that checks
electronics, battery, and reports any problems on the LCD display.
An advanced battery management system always monitors the conditions of the
batteries sending any forewarnings if replacement is needed. Otherwise every 30 days
of normal operation, a battery discharge test is performed and, if a problem arises it
will be reported on the LCD display.
Other than during the initial 24 hours, after startup, or while the UPS is in charging
mode, diagnostic tests (please see chapter 6.5) can be performed manually from the
front panel at any time.
