Powerware 5075 kVA - Manual (Page 85)

77 Powerware BPIII Harsh Environment UPS 50--75 kVA Installation and Operatio n
164201261 Rev. F 111503
Responding to System Events
When the UPS system is running in Normal mode, it continually
monitors itself and the incoming utility power. In Battery or Bypass
modes, the UPS may issue alarms to let you know exactly what event caused the
change from Normal mode. System events can be indicated by horns, lights on
the UPS, or both.
Select Active from the Events menu on the LCD screen to look at the Active
System Events screen. This screen shows any currently active alarms, notices,
or commands.
System Event Horns
The system event horn beeps according to the type of event it is signifying:
• When the UPS detects an alarm that requires your attention, the horn beeps at
½-second intervals.
• When a notice occurs, the horn beeps at 2-second intervals.
• If the battery contactor is open and the Bypass mode is unavailable, the horn
beeps every 4 seconds.
System Event Lights
The status indicators on the UPS Monitor Panel work in conjunction with the event
horn to let you know when the UPS is operating in any mode other than Normal.
Only the Normal indicator is visible during normal UPS operation. The others light
to indicate alarms or events. When an alarm occurs, you should first check these
indicators to see what type of event has taken place. For descriptions of the status
indicators, see “Reading the Status Indicators” section of Chapter 9, “Using the
Monitor Panel”.