Emerson GXT2-PP20KRT208 user manual Operating Modes, Operation

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Operation

8.0OPERATION

8.1Operating Modes

8.1.1Online Mode

NOTICE

Verify the operation of each UPS as detailed in 6.0 - Initial Startup and Electrical Checks before powering On the parallel system as detailed below.

To power On the paralleling system:

1.Connect all parallel power cables and parallel communication cables between the UPSs and parallel POD.

2.Switch all output circuit breakers on the parallel POD to the On (closed) position.

3.Switch all input circuit breakers on the parallel POD to the On (closed) position.

4.Switch the input circuit breaker of all connected UPSs to the On (closed) position.

5.Switch the output circuit breaker of all connected UPSs to the On (closed) position.

6.Press the On button of the first UPS to switch on the inverter.

7.Within one minute, press the On button for the remaining parallel UPSs. Otherwise the paralleling system cannot enter Online mode.

NOTE

During the first minute a UPS is starting up, its “UPS On” indicator flashes.

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Contents Liebert GXT2-PP20KRT208 Page Table of Contents Specifications CommunicationImportant Safety Instructions Glossary of Symbols Introduction Maintenance Bypass CompatibilityRedundancy Design System DescriptionLiebert MultiLink Shutdown EthernetSystem Description Input and Output Slots for UPS Main Input / Output Terminal BlocksMajor Components Optional Power Distribution Parallel Communication PortWHAT’S Included Items shipped with Liebert GXT2-PP20KRT208What You Need Installation Mount the Liebert GXT2-PP20KRT208 in a Rack or on a WallMount the Liebert GXT2-PP20KRT208 on a Wall Paralleling System Connections Installation Main Input and Output Terminal Block Connections Electrical requirementsAdd an Output Power Distribution Module-Optional Parallel POD Main Electrical Connection-Must Be Installed O/P O/P I/P O/PInitial Startup and Electrical Checks Configuration Paralleling for CapacityParalleling for Capacity and Redundancy Operating Modes OperationBypass Mode Fault Condition Battery TestParallel Communication Cable Disconnection Add a Single UPS to the Online Paralleling System Remove a Single UPS from the Paralleling SystemReplacing a Faulty Power Module or UPS Internal Battery Overload ConditionBattery Low Voltage-Battery Mode Communication Interface UPS Status InformationCommunication Calculating total load per UPS UPS Configuration Settings Specifications Parallel POD specificationsOptional output distribution specifications-PD-201 Page Net