- APC User Guide UPS APC Silcon 10-40kW

Alarms and Events
990-4034
User Guide APC Silcon 10-40kW 208V/480V UPS 23
5.0 Alarms and Events
Alarms are indicated by the red lamp (above the left hand corner of the keyboard) and a 30
seconds acoustic signal. An alarm is registered in the alarm stack as long as it is present, and
if more in the same order as they arise.
Certain alarms, such as battery alarms, need resetting. See section 4.0 Parameter Settings.
All alarms are also registered in an event logger and remains there in a stack with room for
250 events. The events are stored in the same order as they arose - showing the latest first.
Besides the alarms the following operational modes are also stored in the event logger.
Mode Comments
MPU is reset UPS has been completely switched off
Stand-by UPS has been in stand-by mode by parallel system
Normal operation UPS has been in normal operation
Battery operation UPS has been in battery operation
Bypass operation UPS has been in bypass operation
System off UPS has been off
5.1 Displaying the Alarm Stack
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.