Eaton 93PM UPS (400V/480V Four-Wire – 100 kW Frame) Installation and Operation Manual 164000566—Rev 04 99Table 31. Status IndicatorsIndicator Status DescriptionGreenOn The UPS is in Double Conversion mode. The power module is supplying power to thecritical load.Off The UPS is turned off.YellowOn The UPS is in Battery mode. Because Battery mode is a normal condition of the UPS, thenormal indicator also remains illuminated.YellowOn The UPS is in Bypass mode. The critical load is supported by the bypass source. The normalindicator is not illuminated when the system is in Bypass mode.RedOn The UPS has an active alarm and requires immediate attention. The LCD shows the highestpriority 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 otherindicators.Flashing There is a new UPS alarm condition. The indicator flashes until acknowledged by touchingany control panel button once.77..22..22 SSyysstteemm EEvveennttssWhen the UPS system is running in Double Conversion mode, it continually monitors itself and the incomingutility power. In Battery or Bypass modes, the UPS may issue alarms to let you know exactly what eventcaused 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. Thisscreen shows any currently active alarms, notices, or commands. For more information on using the eventsscreen, see paragraph 7.2.6 Display Menu Operation.• System Event Horns – The system event horn beeps to alert an operator that an event needing attentionis 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 letthe operator know when the UPS is operating in any mode other than double conversion. Only the normalmode indicator is illuminated during normal UPS system operation. The other indicators illuminate toindicate alarms or events. When an alarm occurs, first check these indicators to see what type of eventhas taken place. For descriptions of the status indicators, see paragraph 7.2.1 Status Indicators.• System Event Messages – When a system event occurs, a message appears on the LCD in the UPSstatus area. This message is also written to the Events Log and may be added to the History Log. Themessages are divided into four categories: alarms, notices, status, and commands.UPS Operating Instructions
