Liebert Series 610 user manual Load Transfer Controls

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Control Panel Description

Tie Circuit Breaker

These two lights indicate the OPEN (Red light) or CLOSED (Green light) state of the Tie circuit breaker.

Load 1 - Normal

This light indicates that Load 1 is being supplied by UPS System 1. Load 1 supplied by UPS system 1 represents the normal operating mode.

Load 1 - On System 2

This light indicates that Load 1 is being supplied by UPS System 2 through the Tie circuit breaker.

Load 1 - Systems Tied

This light indicates that Load 1 is being supplied by both UPS Systems which share the combined loads.

Load 1 - Off

This light indicates that Load 1 is isolated from both UPS Systems.

Load 2 - Normal

This light indicates that Load 2 is being supplied by UPS System 2. Load 2 supplied by UPS system 2 represents the normal operating mode

Load 2 - On System 1

This light indicates that Load 2 is being supplied by UPS System 1 through the Tie circuit breaker.

Load 2 - Systems Tied

This light indicates that Load 2 is being supplied by both UPS Systems which share the combined loads.

Load 2 - Off

This light indicates that Load 2 is isolated from both UPS Systems.

Control Status - Synchronizing

This light indicates that the UPS Systems are currently synchronizing to the selected bypass line.

Control Status - Transferring

This light indicates that the controls are transferring a load from one system to the other system.

3.2Load Transfer Controls

This section of the control panel gives indications and allows control of load transfers between the UPS Systems.

OK to Transfer Load 1 to System 1

This light indicates that it is safe to transfer Load 1 from UPS System 2 to UPS System 1. The trans- fer occurs when the PUSH TO TRANSFER AFTER OK button is pressed, but only if this light is on.

OK to Transfer Load 1 to System 2

This light indicates that it is safe to transfer Load 1 from UPS System 1 to UPS System 2. The trans- fer occurs when the PUSH TO TRANSFER AFTER OK button is pressed, but only if this light is on.

OK to Transfer Load 2 to System 1

This light indicates that it is safe to transfer Load 2 from UPS System 2 to UPS System 1. The trans- fer occurs when the PUSH TO TRANSFER AFTER OK button is pressed, but only if this light is on.

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Contents Continuous POWER-TIE Configuration Page Table of Contents Initial System Start-Up 4.2 Basic Operation Operating InstructionsSystem Flexibility FunctionInter-System Isolation and Reliability Basic Dual-Bus Power-Tie one-line diagram Power-Tie systems fault isolation issues Power-Tie systems control interface diagram Operational Description Control System FeaturesIntersystem Synchronizing Momentary Tie OperationMomentary Tie Transfer Controls Continuous Tie Intersystem Sync and Power SharingTie System Components Continuous Tie/Transfer/Parallel ControlModes of Operation Power-Tie system one-line diagram Checking for Phase, Voltage, and Capacity Continuous Power-TieSelecting a Line Sync Source Synchronizing the UPS SystemsControl panel layout Load Transfers Between UPS Systems Separating Tied SystemsCombined Loads on One System to Continuous Tie Operation Combined Loads on One System from Continuous Tie OperationDesign Criteria Line Sync Signal Power-Tie system fault isolation issues Power-Tie systems fault tolerance Transfer Operation Improper User OperationTie Operation What Happens If a Failure Occurs During a Power Transfer Tie Circuit Breaker or Logic FaultsRecommendations Tie Circuit Breaker Selection Hardware FailuresMimic Panel Load Transfer Controls Transfer Function Available Transfer Control DisabledTransfer Function Available OK to Transfer Load 1 to System Transfer Function Available OK to Transfer Load 2 to SystemControl Inhibits Continuous Tie ControlManual Controls Maintenance Procedures Isolating Each UPS System Normal Transfer Operation ConfigurationsInitial System Start-Up Basic OperationTransfer of Load Between Two Systems Maintenance Procedures Tie Control Logic Components Maintenance Procedures Maintaining Power-Tie ComponentsAbnormal Operations Trouble RecoveryImproper Transfer Circuit Breaker FailureContinuous Tie-Systems Normal Operating ConfigurationTying the UPS Systems Continuous Parallel Operations Abnormal Operations Isolation for Maintenance Power-Tie system one-line diagram Operation Scenarios/Transfer Procedures Combined Loads Operation See 4.2.4 Isolating a UPS System for MaintenanceSee 4.2.5 Transfer of Load Between Two Systems Parallel Operations See 4.2.11 Tying the UPS Systems ContinuousUPS System See 4.2.3 Maintenance Procedures Isolating EachOne system in bypass to Continuous Tie operation Option Operating Instructions Page Company Behind the Products Technical Support/ServiceLocations
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