Alpha Technologies FXM 650, 1100, 2000 UPS - Manual (Page 22)

017-230-B4 Rev B 20
6. Operating the Alpha FXM
6.1 Switching the Alpha FXM On and Off
Under normal operation, the Alpha FXM is always powered ON to supply uninterruptible power to the load.
Switching off the Alpha FXM will disconnect the power supply to the load. If for any reason you need to switch
off the Alpha FXM while maintaining power to your critical load, make sure that you have a plan that provides an
alternate source of power.
6.1.1 Switch Off Procedure
1. Switch off the AC input circuit breaker.
2. Switch off the battery circuit breaker.
The status LED turns off and the LCD panel goes blank. The Alpha FXM is now switched off and no backup
power is supplied to the load.
6.1.2 Switch On Procedure (LINE mode)
Before you put the Alpha FXM back into commission, make sure that the line is qualified and the batteries are
fully charged.
1. Switch on the battery circuit breaker. The LCD displays STANDBY and the fan turns on for about a minute. If
the temperature is below –15ºC, the LCD display may not function. See Chapter "8. Troubleshooting".
2. Switch on the AC input circuit breaker. The Alpha FXM qualifies the line power. The LCD displays RETRAN,
then shows LINE, BUCK or BOOST. The status LED illuminates.
3. If there is no line power, the Alpha FXM remains in the STANDBY mode until the line power is qualified. To
provide backup battery power to the load, perform a manual start by using the Inverter command: From
the Control Menu, scroll till the LCD displays Inverter, press Select and select ON. (See Figure 11 on page
23).
The Alpha FXM uses auto-frequency detection. When it is first switched on, it senses the line frequency and ad-
justs its output frequency to match that of the input. The load should be receiving power, If not, perform trouble-
shooting.
6.1.3 Switching the Alpha FXM from Line mode to Inverter mode
You can force the Alpha FXM to operate in the Inverter mode by manually switching off the input circuit breaker.
Doing so will effectively disconnect any line power to the Alpha FXM, simulating a power outage which triggers
the Alpha FXM to switch to the inverter mode of operation.
Procedure
1. Switch off the input circuit breaker. The LCD shows INVERTER, the status LED starts flashing to show that
the Alpha FXM is running on backup battery power. Confirm that the load is receiving power.
6.1.4 Switching the Alpha FXM from Inverter mode to Line mode
The Alpha FXM remains in the Inverter mode for as long as the input circuit breaker is switched off. Backup pow-
er is provided to the load until the batteries are drained to a preset level which triggers the Alpha FXM to shut-
down automatically. If it is not necessary to operate the Alpha FXM in the Inverter mode, switch the Alpha FXM
back to the Line mode as soon as possible.
Procedure
1. Switch on the input circuit breaker. The Alpha FXM qualifies the line power. The LCD displays RETRAN, then
shows LINE, BUCK or BOOST. The status LED illuminates.
If the Alpha FXM constantly switches between Inverter and Line modes because of a noisy line, broaden the
input parameter tolerances from Normal to Generator. See Sense Type in Table B on page 24.