1800 Series User Manual
1
W
arnings (cont.)
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 of
f.
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 when the load is reduced within the allowable time limit. If the load is not reduced, the output will be shut down. (Details see
Appendix B.)
= Flashing LED = LED lit continuously
Note 1: If any of these warnings 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 cause of the warning listen to the number of
consecutive beeps. One beep indicates an input undervoltage, two beeps means input overvoltage, three beeps is a frequency problem.
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
W
arning/Fault Flash
60%
Flash
W
arning/Fault Flash
150%
Flash
Display State
W
arning
Input Frequency Regulation (see Note 1)
Output Overload
Summary of Contents for 1800 SERIES
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