7.2.1
Operating Modes
The Alpha FXM operating mode, (see Table A) automatically changes as a result of changes in the line. Refer to
Chapter 10, Specifications, for Boost/Buck/Line transfer thresholds. The LCD panel automatically updates to
reflect the change.
Table A
— UPS Operating Modes
LCD display
Description
SHUTDOWN
The Alpha FXM inverter is switched off. Line power is disconnected from the load.
LINE
The Alpha FXM is switched on. Line power is provided to the load.
BOOST1
When the input voltage is lower than the nominal voltage, the Alpha FXM raises
line voltage without using the batteries. Automatic voltage regulation (AVR) is
enabled.
BUCK1
The Alpha FXM lowers line voltage without using the batteries. AVR is enabled.
INVERTER
The Alpha FXM is providing backup battery power to the load. See INVERTER in
Table B on page 45.
RETRAN
The Alpha FXM is transferring from INVERTER mode to Line mode.
TRAN
The Alpha FXM is transferring from the state it is now in into Inverter mode.
STANDBY
The Alpha FXM is switched on and waiting for the line power to be qualified or the
user to clear some faults.
CAUTION: Do not touch the AC output terminals; they may still be energized.
BYPASS
This mode is manually set from the Control Menu. See Figure 28, “Control Menu,
INV BYPASS”. This locks the unit into line mode and turns off the battery charger
so the unit can work with a manual break-before-make bypass switch. AVR will be
disabled.
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Summary of Contents for FXM 350 Series
Page 1: ...Alpha FXM Series 350 USER MANUAL...
Page 21: ...Page 20 to 106...
