Emerson GXT2-PP20KRT208 user manual Battery Low Voltage-Battery Mode

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Operation

8.9Battery Low Voltage—Battery Mode

See the following conditions when the battery low voltage is detected in the paralleling system.

•If one UPS battery is running low, it will transfer to Output Off Mode. The other UPSs continue to supply power to the load.

•If all UPS batteries are running low, the devices will transfer to Output Off Mode and shut down simultaneously. When utility power returns, the paralleling system will restart automatically.

•If one UPS battery is running low and the rest are overloaded in Battery Mode, each UPS in the system shuts down simultaneously without the overload fault. When utility power returns, the paralleling system will restart automatically and return to Line Mode.

•If the last UPS encounters the overload condition, it will transfer to Bypass Mode or shutdown depending on the bypass condition.

•When the bypass is good, each UPS in the paralleling system will transfer to Bypass Mode.

•When the bypass is abnormal, every UPS in the paralleling system will shut down.

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Contents Liebert GXT2-PP20KRT208 Page Table of Contents Communication SpecificationsImportant Safety Instructions Glossary of Symbols Introduction Compatibility Maintenance BypassRedundancy Design System DescriptionEthernet Liebert MultiLink ShutdownSystem Description Major Components Input and Output Slots for UPSMain Input / Output Terminal Blocks Parallel Communication Port Optional Power DistributionItems shipped with Liebert GXT2-PP20KRT208 WHAT’S IncludedWhat You Need Mount the Liebert GXT2-PP20KRT208 in a Rack or on a Wall InstallationMount the Liebert GXT2-PP20KRT208 on a Wall Paralleling System Connections Installation Electrical requirements Main Input and Output Terminal Block ConnectionsAdd an Output Power Distribution Module-Optional O/P O/P I/P O/P Parallel POD Main Electrical Connection-Must Be InstalledInitial Startup and Electrical Checks Paralleling for Capacity and Redundancy ConfigurationParalleling for Capacity Operation Operating ModesBypass Mode Parallel Communication Cable Disconnection Fault ConditionBattery Test Remove a Single UPS from the Paralleling System Add a Single UPS to the Online Paralleling SystemOverload Condition Replacing a Faulty Power Module or UPS Internal BatteryBattery Low Voltage-Battery Mode Communication Communication InterfaceUPS Status Information Calculating total load per UPS UPS Configuration Settings Parallel POD specifications SpecificationsOptional output distribution specifications-PD-201 Page Net