Powerchute Network Shutdown logs certain events within its Event Log. The following is a list of possible events and what they mean:

Battery: Discharged The UPS batteries are discharged. If power fails, an immediate low battery condition will exist. Sufficient runtime cannot be guaranteed. This is normal if the UPS has recently been on battery for along time. If a Battery Recharged event does not occur within four hours, your UPS may not be charging properly; contact APC Technical Support.


Battery: Recharged The UPS's battery capacity is within an acceptable range. This will occur only if a Battery Discharged event has occurred.


Battery: Installed A battery module has been added to your Symmetra Power Array, or an external battery pack has been added to your Smart-UPS or Matrix-UPS.


Battery: Removed A battery module has been removed from your Symmetra Power Array, or an external battery pack has been removed from your Smart-UPS or Matrix-UPS.


Battery: Replaced A UPS battery has been replaced. This will occur only if the Battery Replacement Needed event has occurred, and the battery has been replaced. If this event occurs at any other time, contact APC Technical Support.


Battery: Replacement Needed A UPS battery is faulty and needs to be replaced; visit the APC web site for information on ordering a replacement battery, or contact APC Technical Support.


Bypass: Ended The UPS has returned from bypass. See Bypass: For Maintenance .


Bypass: For Maintenance The UPS has switched to bypass and will not support its load in case of power failure. This is a normal condition if maintenance is being performed on the UPS. If this occurs when the UPS was not deliberately put into Bypass, contact APC Technical Support.


Bypass Switch: Failed The bypass contactor is not operating properly. The UPS will not be able to support its load in case of a power failure. Contact APC Technical Support.


Bypass Switch: Replaced The bypass contactor is operating properly .


Communication: Established Communication between PowerChute and the UPS has been established


Communication: Lost Communication (both serial and network) between PowerChute and the UPS has been lost. Perform the same troubleshooting steps listed in System Problem Report.


Communication: Lost While On Battery A power failure occurred, forcing the UPS to go to battery and causing PowerChute to lose communication with the Management Card. Without communication, PowerChute cannot determine how much runtime the UPS has available before the UPS turns off (if the power failure continues).


Input Power: Restored Utility power has been restored; the UPS is no longer running on battery power.


Low Battery Condition: Occurred The UPS is running on battery, and the batteries are low and will soon be exhausted if power is not restored. This event will cause PowerChute to start shut down activities immediately.


Minimum Load Capability Lost: The minimum load capability threshold has been violated; contact APC Technical Support.


Minimum Load Capability Regained: The minimum load capability threshold has been restored. This event will occur only after a Minimum Load Capability Lost event has occurred. If this event occurs at any other time, contact APC Technical Support.


Minimum Redundancy: Lost The minimum redundancy threshold of your Symmetra Power Array has been violated. Check to see that all of the modules are functioning properly, and that the redundancy configuration is correct. If the condition persists, contact APC Technical Support.


Minimum Redundancy: Regained The minimum redundancy threshold has been restored. This event will occur only after a Minimum Redundancy Lost event has occurred. If this event occurs at any other time, contact APC Technical Support.


Runtime Exceeded: PowerChute is configured to require more run time than the UPS has available. Two configuration conditions can cause this event:

The command file time on the Configure Shutdown page is greater than the Low Battery Duration set for the UPS. Since a Low Battery condition will always cause a shutdown; it is critical to have enough time available when a Low Battery condition occurs to complete shutdown activities. Either decrease the command file time, or increase the Low Battery Duration (to change the Low Battery Duration, go to the Configuration page on the Management Card user interface).

The sum of the shutdown delay time configured for UPS On Battery event plus the command file time on the Configure Shutdown page, minus two minutes, exceeds the amount of run time that the UPS has available. This can be caused by having too much load on the UPS, or by the UPS batteries not being fully charged. If the UPS batteries are fully charged, either remove the load from the UPS, decrease the shutdown delay time for the UPS On Battery event, or decrease the command file execution time on the Configure Shutdown page.

Note: This condition means that the battery should be replaced, but the battery will still provide backup power. This condition does not mean that the battery has already failed.


Runtime: Normal Again The available UPS run time will support the PowerChute configuration. This event will occur only after a Run Time Exceeded event has occurred.


SmartBoost: Activated The UPS has enabled SmartBoost in response to low voltage from your utility power. If this occurs frequently, decrease the Low Transfer Voltage of your UPS using the Management Card user interface. If the condition persists, contact an electrician to analyze your utility power.


SmartTrim: Activated The UPS has enabled SmartTrim in response to high voltage from your utility power. If this occurs frequently, increase the High Transfer Voltage of your UPS using the Management Card user interface. If the condition persists, contact an electrician to analyze your utility power.


System-Level Fan: Failed The internal fan has failed. Check the fan for obstructions. If this condition is not resolved immediately, contact APC Technical Support.


System-Level Fan: Replaced The internal fan is operating normally. This event will occur only after a Fan Failure. If this event occurs at any other time, contact APC Technical Support.


System Shutdown: Canceled An event occurred for which the Shut Down System action is selected, but the condition was corrected before the shutdown delay time had elapsed. The system shutdown has been canceled. See Configure Events for details about the Shutdown System Action.


System Shutdown: Started An event has occurred for which the Shut Down System action is enabled, and the system has started to shut down. See Configure Events for details about the Shutdown System Action.


Upgrade Management Card firmware: The Management Card in your UPS is running firmware that does not support this version of PowerChute network shutdown. Please obtain the latest Management Card firmware from the APC web site.


UPS Battery: Installed An external battery pack has been added.


UPS Module: Failed A power module has failed in your Symmetra Power Array Replace the power module, and contact APC Technical Support concerning repair or replacement of the failed module.


UPS Module: Installed A power module has been added to your Symmetra Power Array.


UPS Module OK: A power module in your Symmetra Power Array is operating normally. This event will occur only after a Power Module Failed event has occurred. If this event occurs at any other time, contact APC Technical Support.


UPS Module: Removed A power module has been removed from your Symmetra Power Array.


UPS: On Battery The UPS has gone on battery due to a power failure. Restore power to the UPS. If there is not a general power failure (that is, if only the UPS appears to be experiencing the power failure), check building wiring and circuit breakers. If this condition happens occasionally for only a short time, check to see if equipment on the same electrical circuit draws occasional high power; this is typical of equipment such as laser printers and photocopiers.


UPS: Overloaded The UPS has sensed a load greater than 100 percent of its rated capacity. Remove load from the UPS until the condition is corrected. If this condition happens occasionally for only a short time, check to see if equipment powered by the UPS draws occasional high power; this is typical of equipment such as laser printers and photocopiers. If the condition persists, contact APC Technical Support.


UPS: Overload Corrected A condition which caused the UPS: Overloaded event to occur has been corrected.


UPS Temperature: Normal Again The UPS's internal temperature has returned to an acceptable level. This event will only occur after a UPS Temperature Overheated event has occurred. If this event occurs at any other time, contact APC Technical Support.


UPS Temperature: Overheated The UPS's internal temperature threshold has been exceeded. Make sure that there is at least one inch of clearance around the UPS, and that the UPS ventilation ports are not blocked. If this condition is not resolved quickly, contact APC Technical Support. This condition can also be caused by poor power quality. Decrease the sensitivity of the UPS through the Management Card user interface. If the condition persists, contact an electrician to analyze your utility power.