Vertiv Liebert EXL 31 Installer/User Manual
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Vertiv Liebert EXL 31 Installer/User Manual

Load bus sync controller
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Liebert®
Load Bus Sync Controller
Installer/User Guide
for Liebert® EXL S1 UPS

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Summary of Contents for Vertiv Liebert EXL 31

  • Page 1 Liebert® Load Bus Sync Controller Installer/User Guide for Liebert® EXL S1 UPS...
  • Page 2 The products covered by this instruction manual are manufactured and/or sold by Vertiv. This document is the property of Vertiv and contains confidential and proprietary information owned by Vertiv. Any copying, use or disclosure of it without the written permission of Vertiv is strictly prohibited.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS Important Safety Information 1 Liebert® Load Bus Sync Controller 1.1 Synchronization Control Configurations 1.1.1 Two Systems with Separate Utility Supplies 1.2 Two UPS Units With Common Bypass Line 1.3 Liebert® Systems with Electrical Generating Devices 1.4 Liebert® EXL S1 with a Third-Party UPS 2 Installation 2.1 Location Considerations 2.2 Connecting the Controller to the UPS System...
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  • Page 5: Important Safety Information

    IMPORTANT! This manual contains important safety instructions that must be followed during the installation and maintenance of the UPS and batteries. Read this manual thoroughly and the safety and regulatory information, available at https://www.vertiv.com/ComplianceRegulatoryInfo, before attempting to install, connect to supply, or operate this equipment.
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  • Page 7: Liebert® Load Bus Sync Controller

    The Liebert Load Bus Sync Controller is either a factory-installed option or a kit that is installed and configured by Vertiv- trained and certified personnel. The controller unit is housed in a metal enclosure that may be mounted near the UPS or inside the electrical distribution panel.

  • Page 8: Synchronization Control Configurations

    Otherwise, the UPS will be in phase with its own bypass line and follow external synchronization only when this is out of tolerance. Vertiv™ | Load Bus Sync Controller Installer/User Guide...
  • Page 9 Figure 1.2 Two Separate Utility Supplies ITEM DESCRIPTION Power Source A Power Source B Master Slave Source Line B "To others" Static Switch To load "To others" Static Switch Source Line A Static Switch Load Bus Sync Controller 1 Liebert® Load Bus Sync Controller...

  • Page 10: Two Ups Units With Common Bypass Line

    NOTE: Install N.B. fuses at the beginning of the signal line to avoid fires in case of short circuit in the wires. Configure both UPS systems with main synchronization source to bypass. Otherwise the UPSs will not be capable of synchronous transfer to bypass. Figure 1.3 Common Bypass Line Vertiv™ | Load Bus Sync Controller Installer/User Guide...
  • Page 11 ITEM DESCRIPTION Power Source A Common Bypass Line Power Source B UPS A UPS B Phase A Phase C Liebert® Load Bus Sync Controller Source Line B Source Line A Static Switch "To others" Static Switch To load "To others" Static Switch 1 Liebert®...

  • Page 12: Liebert® Systems With Electrical Generating Devices

    Power Source B, EXL S1 Power Source Source Line B "To Others" Static Switch To Load Static Switch "To Others" Static Switch Source Line A Phase A Phase C Load Bus Sync Controller Vertiv™ | Load Bus Sync Controller Installer/User Guide...

  • Page 13: Liebert® Exl S1 With A Third-Party Ups

    1.4 Liebert® EXL S1 with a Third-Party UPS The Liebert Load Bus Sync Controller synchronizes Liebert® EXL S1 UPS's with UPS systems made by another company. In this scenario, the Liebert units must be configured as slave devices to follow the phase reference signal derived from the non-Liebert master UPS.
  • Page 14 Power Source B, Liebert® EXL S1 Power Source Source Line B "To others" Static Switch To load Static Switch "To others" Static Switch Source Line A Phase A Phase C Load Bus Sync Controller Vertiv™ | Load Bus Sync Controller Installer/User Guide...

  • Page 15: Installation

    2. Using an RJ-45 cable, connect the slave UPS X20 connection (on the UPS customer connectivity panel) to UPS 1 port on the front of the Liebert Load Bus Sync Controller. 3. Once the connections are complete, contact Vertiv™ for the final setup and calibration. The setup and calibration must be performed by an authorized Vertiv™ technician.
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  • Page 17 Vertiv™ | Load Bus Sync Controller Installer/User Guide...
  • Page 18 Vertiv.com | Vertiv Headquarters, 1050 Dearborn Drive, Columbus, OH, 43085, USA © 2019 Vertiv Group Corp. All rights reserved. Vertiv™ and the Vertiv logo are trademarks or registered trademarks of Vertiv Group Corp. All other names and logos referred to are trade names, trademarks or registered trademarks of their respective owners.

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