UPStation GXT 3x1
Chapter 4 - Operating modes
(06/02)
Page 15
4.1.7
Powering down the UPS with mains available
1
Shutdown all connected load equipment.
2
Press the OUTPUT OFF/BYPASS button once until a "beep" is heard. The UPS ON LED will extinguish and
the BYPASS LED will light if the BYPASS voltage is within an acceptable range. The load is now powered
through the BYPASS and there is no UPS protection. The UPS will remain in BYPASS MODE OPERATION
until the user continues with the next step to turn the UPS off.
3
Press the OUTPUTOFF/BYPASS button for at least 1 second, twice, within a 4 second time-jnterval. The
BYPASS LED will extinguish and all power to the load will stop. The UPS is in OUTPUT OFF MODE
OPERATION and the AC LINE LED will be on.
4
To isolate the UPS, turn off the INPUT, OUTPUT, and BATTERY breakers on the rear of the UPS. For
complete isolation, turn off the mains to the UPS.
4.1.8
Alternate quick powering down the UPS
The UPS will skip past BYPASS MODE OPERATION directly to OUTPUT OFF MODE OPERATION even
with mains available.
1
Shutdown all connected load equipment.
2
Press the OUTPUT OFF/BYPASS button for at least 1 second, twice, within a 4 second time internal. The UPS
ON LED will extinguish and the BYPASS LED will light for a short period then extinguish and all power to the
load will stop. The UPS is in OUTPUT OFF MODE OPERATION and the AC LINE LED will be on.
3
To isolate the UPS. turn off the INPUT, OUTPUT, and BATTERY breakers on the rear of the UPS. For
complete isolation turn off the mains to the UPS.
NOTE:
Pressing the OUTPUT OFF/BYPASS button will always remove the load from UPS power protection.
Pressing the OUTPUT OFF/ BYPASS button for at least 1 second, twice, within a 4 second time interval will
always remove power from the load.
4.1.9
Manual operation without mains
The UPS operating time is limited by available battery power without mains. The UPS may be manually turned
off after the loads have been turned off to prevent the batteries from being completely drained. It may also be
desirable to power up the loads for a short time without mains power to support a critical operation.
With mains unavailable, the UPS has two possible modes:
•
BATTERY MODE OPERATION -UPS ON and BATTERY LEDs will be on and the inverter will provide
power to the load using battery power.
•
OUTPUT OFF MODE OPERATION -All LED.s will be off and the load will not have power .
4.1.10
Powering up the UPS without mains
1
Ensure the load equipment is turned off, and all loads are proper1y connected to the UPS output.
2
Verify that the BATTERY, INPUT, AND OUTPUT circuit breakers remain closed.
3
Press the UPS ON/ALARM/BATTERY TEST button for at least one second until you hear the audible alarm
emit a "double beep" to signal acceptance of the command. After a short delay, the BATTERY LED should
light. The UPS will then initiate a self-test and approximately 10 seconds after these tests are completed, the UPS
ON and BATTERY LEDs will light indicating that the batteries now power the load.
4
Connected loads may now be started. If the mains is not restored before the batteries are fully discharged, the
UPS will automatically turn off all power to the load.
NOTE:
Closely monitor remaining stored energy using the battery capacity LEDs or communication option. If
an orderly shutdown of the load is required, it must be completed before the batteries are fully discharged.
4.1.11
Powering down the UPS without mains
1
Shutdown all connected load equipment.
2
Press the OUTPUT OFF/BYPASS button once until a "beep" is heard. The UPS will switch from BATTERY
MODE OPERATION to OUTPUT OFF MODE OPERATION. All LEDs will turn off and all power to the load
will stop.
3
To isolate the UPS, turn off the INPUT, OUTPUT, and BATTERY breakers on the rear of the UPS. For
complete isolation, turn off the AC supply to the UPS.
CAUTION:
When the UPS is in OUTPUT OFF MODE OPERATION without MAINS, control panel LEDs and
cooling fans will be off. The UPS is not disabled and output power could be restored at any time. Do not attempt to
service the load or UPS without isolating the UPS.
