Operator`s manual

36
LOW BATTERY
WARN ING
LOW BATTERY
SHUTDOWN
LINE PRESENT
LINE FA I LU RE
SERVICE TEST
ALPHA
TEC HN O LO G IE S
ALARM
OFF
OUTPUT LOAD
OVERLOAD
100 %
75 %
50 %
25 %
MANUAL
START
4.4 Using the Standard Interface Device, continued
4. OPERATION
Fig. 20
Test LED and Output Load LED Indicators
UPS Powering Up
Whenever the CFR is powering up, the TEST LED flashes for a few seconds.
At the same time the OUTPUT LOAD indicator LEDs flash in a chasing pattern to
indicate that there is no output. As soon as the power up sequence is completed,
the TEST LED switches OFF and the OUTPUT LOAD display LEDs show the
percentage of the load.
Output Shutdown Pending
The TEST LED will flash to indicate that a UPS output shutdown is pending
to occur. When the operator gives an output shutdown command (either via the RS-
232 serial port or by the LAN Interface port), the UPS delays the shutdown (for a
programmable period) before actually switching off the output.
Output Shutdown In Progress
The five OUTPUT LOAD LEDs will flash in a chasing pattern whenever the
CFR output is switched off by an output shutdown command (either via the RS-232
serial port or by the LAN Interface port). This will also occur when the unit is first
powering up.
OUTPUT LOAD LEDsTEST LED
37
LOW BA TTER Y
WARN I NG
LOW BA TTE RY
SHUTDOWN
LINE
PRESENT
LINE FAI LURE
SERVI CE
TEST
LOW BA TTER Y
WARN ING
LOW BA TTE RY
SHUTDOWN
LINE
PRESENT
LINE FA I LURE
SE RV ICE
TEST
LOW BA TTER Y
WARN ING
LOW BA TTE RY
SHUTDOWN
LINE
PRESENT
LINE FA I LURE
SE RV ICE
TEST
LOW BA TTER Y
WARN I NG
LOW BA TTE RY
SHUTDOWN
LINE
PRESENT
LINE FAI LURE
SERVI CE
TEST
4. OPERATION
4.4 Using the Standard Interface Device, continued
Line Synchronization
When both the “LINE POWER” and “LINE FAILURE” LEDs are ON,
the UPS is synchronizing its output frequency to the utility input prior to
resuming AC line operation. Synchronization takes approximately 15 seconds.
If the line frequency (generator frequency) is out of tolerance, the UPS can
not synchronize to it, and stays in the inverter mode.
Line Present Operation
The green “LINE PRESENT” LED indicates that the UPS is running
on AC line (utility / mains) power.
Line Failure (AC Input Out of Tolerance)
Whenever AC line voltage becomes unacceptably high or low (+10 %
/ -25%), or the line frequency exceeds
+ 3%, the "LINE PRESENT" LED
flashes and the "LINE FAILURE" LED lights indicating the UPS is running on
backup power. NOTE: High generator THD can also cause this condition.
Line Failure Operation
Whenever a utility power outage occurs, the UPS initiates LINE
FAILURE operation without interruption of output power. The amber “LINE
FAILURE” LED lights to indicate that the UPS is running on backup power.
Fig. 21
Fig. 22
Fig. 23
Fig. 24