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6.2.1
Status Indicators
The four symbols on the bottom of the control panel are status indicators. These colored light emitting diode
(LED) lamps work with the alarm horn to provide the operating status of the UPS.
Table 6-1 describes the status indicators.
Table 6-1. Status Indicators
Indicator
Status
Green
Yellow
Yellow
Flashing
Red
6.2.2
System Events
When the UPS system is running in Double Conversion 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 Double Conversion mode. System events on the UPS can be indicated by horns, lights,
messages, or all three.
Select the LOGS tab from the navigation bar on main menu screen to display the active events screen. This
screen shows any currently active alarms, notices, or commands. For more information on using the events
screen, see paragraph 6.2.6.
System Event Horns – The system event horn beeps to alert an operator that an event needing attention is
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taking place. The horn cycles at a half-second rate. To silence the horn, touch any control panel button.
System Event Indicators – The status indicators on the UPS control panel work with the event horn to let
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the operator know when the UPS is operating in any mode other than double conversion. Only the normal
mode indicator is illuminated during normal UPS system operation. The other indicators 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 6.2.1.
System Event Messages – When a system event occurs, a message appears on the LCD in the UPS status
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area. This message is also written to the Events Log and may be added to the History Log. The messages
are divided into four categories: alarms, notices, status, and commands.
Eaton 93PM UPS (20–50 kW, 480V Four Wire – 50 kW Frame) Installation and Operation Manual P-164000540—Rev 4
Description
On
The UPS is in Double Conversion mode. The power module is supplying power to the critical load.
Off
The UPS is turned off.
On
The UPS is in Battery mode. Because Battery mode is a normal condition of the UPS, the normal indicator also
remains illuminated.
On
The UPS is in Bypass mode. The critical load is supported by the bypass source. The normal indicator is not
illuminated when the system is in Bypass mode.
On
The UPS has an active alarm and requires immediate attention. The LCD shows the highest priority active alarms.
All alarms are accompanied by an audible horn. To silence the horn, touch any control panel button. The Alarm
indicator may be illuminated along with other indicators.
There is a new UPS alarm condition. The indicator flashes until acknowledged by touching any control panel button
once.
UPS Operating Instructions
www.eaton.com/powerquality
6-5
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