Liebert Series 610 user manual Continuous Tie Control, Control Inhibits

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Control Panel Description

3.3Continuous Tie Control

This section of the control panel provides indicators and controls for the control of tied systems functions.

OK to Tie Systems

This light indicates that it is safe to tie UPS Systems 1 and 2 together. The systems are tied after the PUSH TO TIE SYSTEMS AFTER OK button is pressed, but only if this light is on.

OK to Open Tie

This light indicates that it is safe to separate UPS Systems 1 and 2. The Tie circuit breaker opens after the PUSH TO OPEN TIE AFTER OK button is pressed, but only if this light is on.

Tie Control Disabled

This light indicates that the tie controls are disabled because the systems are transferring a load.

Primary Bypass Select

This switch is used to select which systems bypass to synchronize with when a tie sequence is initi- ated. It is also the bypass source the Loads will be transferred to should a fault occur while the sys- tems are in parallel operation.

Synchronize Systems

This button is used to begin and end a tied systems operation. When the SYNCHRONIZE SYSTEMS BUTTON is first pressed, the button will light on indicating, that tied systems operation is desired.

The systems synchronize to the bypass source selected by the PRIMARY BYPASS SELECT switch. Once the systems are synchronized and all other conditions to safely tie the systems have been met the OK TO TIE SYSTEMS light turns on.

Press the PUSH TO TIE SYSTEMS AFTER OK button to close the appropriate circuit breaker to put the systems in parallel. To separate tied systems press this button again. The light turns off indicat- ing the tied condition is no longer desired.

If it is safe to separate the systems the OK TO OPEN TIE light turns on. Press the PUSH TO OPEN TIE AFTER OK button to open the Tie breaker. Both UPS systems will resume independent opera- tion.

Push to Tie Systems After OK

Once the OK TO TIE SYSTEMS turns on, pressing this button closes the appropriate circuit breaker to tie the systems.

Push to Open Tie After OK

Once an OK TO OPEN TIE turns on, pressing this button opens the Tie circuit breaker to separate the systems.

3.4Control Inhibits

This section of the control panel provides alarm indicators which prevent transfers and parallel oper- ation of the UPS systems.

Phase Lockout

This light indicates the systems are not synchronized. It is a waveform-based redundant check of syn- chronization. The primary sync indicator is based on UPS module sync bus coincidence.

This light normally turns on while the systems are synchronizing prior to a Tie or Transfer operation. If the light does not turn off, contact Liebert Global Services for assistance.

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Contents Continuous POWER-TIE Configuration Page Table of Contents Initial System Start-Up 4.2 Basic Operation Operating InstructionsFunction System FlexibilityInter-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 FeaturesMomentary Tie Operation Intersystem SynchronizingMomentary 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 Synchronizing the UPS Systems Continuous Power-TieChecking for Phase, Voltage, and Capacity Selecting a Line Sync SourceControl panel layout Load Transfers Between UPS Systems Separating Tied SystemsCombined Loads on One System from Continuous Tie Operation Combined Loads on One System to Continuous Tie OperationDesign Criteria Line Sync Signal Power-Tie system fault isolation issues Power-Tie systems fault tolerance Improper User Operation Transfer OperationTie Operation Hardware Failures Tie Circuit Breaker or Logic FaultsWhat Happens If a Failure Occurs During a Power Transfer Recommendations Tie Circuit Breaker SelectionMimic Panel Load Transfer Controls Transfer Function Available OK to Transfer Load 2 to System Transfer Control DisabledTransfer Function Available Transfer Function Available OK to Transfer Load 1 to SystemControl Inhibits Continuous Tie ControlManual Controls Basic Operation Normal Transfer Operation ConfigurationsMaintenance Procedures Isolating Each UPS System Initial System Start-UpTransfer of Load Between Two Systems Maintenance Procedures Tie Control Logic Components Maintenance Procedures Maintaining Power-Tie ComponentsCircuit Breaker Failure Trouble RecoveryAbnormal Operations Improper TransferNormal Operating Configuration Continuous Tie-SystemsTying the UPS Systems Continuous Parallel Operations Abnormal Operations Isolation for Maintenance Power-Tie system one-line diagram Operation Scenarios/Transfer Procedures See 4.2.4 Isolating a UPS System for Maintenance Combined Loads OperationSee 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 Technical Support/Service Company Behind the ProductsLocations
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