35
LOW BATTERY
WARN
ING
LOW
BATTERY
SHUTDOWN
L INE PRE SENT
L INE FA ILURE
SERVICE
TEST
ALPHA
TECHNOLOGIES
ALARM
OFF
OUTPUT LOAD
OVERLOAD
100 %
75 %
50 %
25 %
MANUAL
START
4.4
Using the Standard Interface Device
The Standard Interface Device displays vital UPS operating parameters and
has the ability to self-test the UPS at the touch of a button. When used in conjunction
with the CFR's rear-panel “Form-C” contact closures, UPS status information can be
sent directly to a Local Area Network (see section 2.5).
4. OPERATION
Fig. 19
Standard Interface Device
LINE PRESENT LED
Manual Start (Hold to Test) Switch
Alarm OFF Switch
LINE FAILURE LED
OUTPUT LOAD LEDs
TEST LED
LOW BATTERY WARNING LED
LOW BATTERY SHUTDOWN LED
SERVICE LED
38
4.4
Using the Standard Interface Device
, continued
Low Battery Warning
The red “LOW BATTERY WARNING” LED precedes “LOW BATTERY
SHUTDOWN” by 2 to 5 minutes and indicates that the batteries can no longer
support the load. Immediate steps should be taken to begin an orderly system
shutdown. From LOW BATTERY WARNING, it may take several hours to fully
recharge the batteries.
Fig. 25
Low Battery Shutdown
The “LOW BATTERY SHUTDOWN” LED indicates that the UPS has shut
itself down to prevent over-discharge damage to the batteries. In critical applications,
an additional power source (such as a generator) should be used until utility line
power returns.
Fig. 26
Test
The yellow “TEST” LED indicates that the UPS is simulating a LINE FAILURE
to self-test the backup capabilities of the unit. If, during the one minute test, the
UPS fails to supply backup power, it resumes LINE PRESENT operation without
interruption to the load and lights the “SERVICE” LED.
Fig. 27
Service
The “SERVICE” LED indicates that the UPS is no longer able to provide
backup power to the load and that service is required. Consult the manual's
troubleshooting section or contact your authorized Alpha service center.
Fig. 28
4. OPERATION
