Eaton POWERWARE 9315 - Manual (Page 85)

EATON Powerware ® 9315 UPS (500–750 kVA) Installation and Operation Manual S 164201691 Rev 1 www.powerware.com 11-1
Chapter 11 Responding to System Events
When the UPS system is operating 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 on the UPS can be indicated by horns, indicators, messages, or all three.
Select Active from the Events menu on the LCD screen to display the Active System
Events screen. This screen shows any currently active alarms, notices, or commands.
11.1 System Event Horns
The system event horn beeps according to the type of event it is signifying:
S When the UPS detects an alarm that requires your attention, the horn beeps at
half-second intervals.
S When a notice occurs, the horn beeps at two-second intervals.
11.2 System Event Indicators
The status indicators on the UPS control panel work in conjunction with the horn to
let you know when the UPS system is operating in any mode other than Normal
mode. Only the Normal indicator is illuminated during normal UPS system operation.
The others illuminate to indicate alarms or events. When an alarm occurs, first check
these indicators to see what type of event has taken place. For descriptions of the
status indicators, see paragraph 8.4 on page 8-4.
11.3 System Event Messages
When a system event occurs, a message is added to the Event History Log. A
message may also appear on the UPS control panel. The Event History Log contains
all system event messages, whether or not they were displayed on the control panel.
Figure 11Table 11