APC 990 manual How to view active alarms, How to view the event log

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Troubleshooting: Alarm Types

How to view active alarms

Press the red triangular alarm symbol to view active alarms.

Only active alarms will appear in this list. Previous alarms are stored in the Event Log, which contains a detailed record of the system’s last 1024 events. Press the Event Log button to go to the Event Log.

Note: The Active Alarms screen includes a recommended action for resolving each problem.

How to view the event log

The event log can be accessed either by pressing the Event Log button on the Active Alarms screen (see “How to view active alarms” on page 26) or by following this procedure:

Press the Operation button in the bottom left corner to access the Operation screen.

Press the View Event Log button to access the Event Log screen.

The Event Log screen contains a detailed record of the system’s latest 1024 events. This includes operation mode changes, system alarms, etc.

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Symmetra MW with External Bypass Static Switch Operation Manual - 990-1377D-001

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Contents Operation Page Content Configuration Overview Navigation TreeDisplay Symbols and Buttons Navigation symbolsScreen symbols Buttons BreakersHow to Access Summary Screens from UPSAccess Bypass Summary screens How to Access the APC Symmetra MW Remote Display How to start a web-based remote sessionOperation Modes Battery operationOperation Normal operationStatic bypass operation Manual bypass operationOperation Procedures How to access screens protected by the user-passwordHow to start up the system from manual bypass operation  Press the Operation button on the UPS Summary screen How to transfer from normal to static bypass operation How to transfer from static bypass to normal operation  Press Initiate TransferConfiguration How to Configure the SystemHow to change the password How to configure the Touch-Screen settings screenHow to configure the Modbus Settings screen How to configure the Regional Settings screen How to configure the Network Configuration screensConfiguration How to Configure the System Configuration How to Configure the System How to configure the Display Settings How to configure the Battery Test Settings screen How to access Predictive Maintenance screens MaintenancePredictive Maintenance Screens Inverter DC Capacitors screenInverter AC Capacitors screen Top Fans screenMain Static Switch Fans screen Inverter Fans screenHow to Change the Air Filters Alarm button TroubleshootingAlarm Types Alarm levelsHow to view active alarms How to view the event logTroubleshooting Alarm Types APC Worldwide Customer Support 990-1377D-00106/2008

990 specifications

The APC 990 is a high-performance uninterruptible power supply (UPS) designed to provide reliable power protection for critical equipment in various settings, including data centers, network closets, and industrial environments. Recognized for its exceptional efficiency and robust features, the APC 990 caters to the needs of its users by ensuring continuous power availability.

One of the standout characteristics of the APC 990 is its modular design, which facilitates easy scalability and maintenance. This UPS system allows users to adapt to growing power needs by adding or replacing modules without significant downtime. The modular approach also enhances redundancy, ensuring that even if one module fails, the system continues to function efficiently.

The APC 990 boasts an impressive power factor, often rated at 0.9 or higher, which indicates its ability to deliver more usable power while minimizing energy loss. This feature not only improves the efficiency of the UPS but also reduces the overall energy consumption, contributing to a more environmentally friendly operation. The system’s high efficiency translates into lower operational costs for businesses that rely on it for power backup.

Equipped with advanced technologies, the APC 990 features Intelligent Battery Management (IBM) to optimize battery performance and lifespan. This technology intelligently adjusts charging parameters based on the specific characteristics of the connected batteries, thereby prolonging their operational life and enhancing reliability.

Furthermore, the APC 990 includes a user-friendly interface that provides real-time monitoring and alerts through a graphical LCD display. This interface allows users to access crucial information such as power status, load levels, and battery health at a glance. The system can also be integrated with network management solutions for remote monitoring, ensuring that users are always informed about the status of their power supply.

The robust physical design of the APC 990 ensures durability and performance even under demanding conditions. Its compact form factor enables efficient use of space, while its advanced cooling technology prevents overheating, thus maintaining optimal performance.

In summary, the APC 990 stands out in the market for its combination of modular design, high efficiency, advanced battery management, and user-friendly interface. These features make it an ideal choice for businesses seeking reliable and scalable power protection solutions for their critical infrastructure.