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25User Guide Silcon DP300E Series 480V 400-500kVA
7OA0004 US rev. 02
Alarms
6.0 Alarms - What To Do
6.1 General
Alarms are indicated by the red LED (above the upper left corner of the keyboard)
and by a 30 secs. acoustic signal. An alarm is registered in an alarm stack as long as
it is present, and logged in the same succession as they arise.
6.2 The alarm stack
The alarm stack can be displayed by:
Action Description
1. Press
Access to the alarm stack
2. Press
or Scroll up or down through the alarm stack messages.
Last message is “No (further) alarm”.
3. Press
Exits the alarm stack. If not operated the system
will exit the alarm stack automatically after 30 seconds.
6.3 Alarm messages
The alarm messages are used together with the events logger as part of a diagnostic
system for the UPS service specialist.
Before calling for assistance you may take one or more of the following actions.
1. “Battery defective” means no back-up capacity any longer. Call for assistance.
“Battery weak” means reduced back-up capacity. Reset the battery monitor
alarm signal according to section 4.2.1 and start a battery monitor test according
to section 8.5. Record the obtained back-up time and reset the new alarm from
the battery monitor. Let the UPS recharge the battery for at least 16 hours, and
with the same load as before start a second battery monitor test. If this results
in improved back-up time, continue with further capacity tests until none or
insignificant improvements take place. Above might “wake-up” the battery –
else call for assistance.
2. “Battery operation”: Check the local utility power supply. One or more fuses may
be blown or somebody could by accident have switched off the supply.
3. “Fan fault”: Check if the cooling air intake on your UPS has been blocked.
4. “Overload”: Check display for load on the UPS - the max. output capacity may be
exceeded.
5. If there is no output voltage from the UPS - the utility supply is present and an
attempt to restart gives no result – bypass the UPS as described in section 2.6 or
2.7 if external service bypass switch is present.
IF THE UPS IS SOUNDING AN ALARM. To silence the audible alarm,
press the silence alarm key shown at the right. If you do not silence the
alarm, it will automatically silence itself after 30 seconds. Silencing the
audible alarm does not correct the problem that caused the alarm.
NOTE:
A battery monitor test can not
be performed unless the battery
is fully charged.