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Description and Resolution
The input frequency is outside
specified limits. If the unit was
online when the warning occurred
it will transfer to battery backup.
After the backup the output will
shutdown. If the unit was in
bypass the output will be turned
off. The unit will return to normal
operation if input frequency
returns to within specified limits.
The connected load exceeds
the UPS power rating.
Reduce the load attached to
the UPS. The unit will
automatically return to normal
operation.
Alarm State
Alarm will
sound for
3, 1/2-
second
beeps at
10-second
intervals.
Alarm will
sound for
1-second
at 15-
second
intervals.
LED State
Warning/Fault... Flash
60% .................. Flash
Warning/Fault... Flash
150% ................ Flash
Display State
Warnings (cont’d)
Warning
Input
Frequency
Regulation
(see note 1)
Output
Overload
= Flashing LED = LED lit continuously
Note 1: If any of these faults occur while the UPS is in online mode it will immediately transfer to backup mode. In this case the percentage LED’s
will be used to show the battery power status. To identify the fault that has occurred listen to the number of consecutive beeps. One beep
indicates an input undervoltage, two beeps means input overvoltage, three beeps is a frequency problem.
Note 2: Once the batteries are exhausted the unit will either shutdown the output, or switch to bypass according the selections set by the user (see
the section entitled “Programming Mode” part B on page 19).