Vertiv Liebert Load Bus Sync Controller User Manual
Liebert®
Load Bus Sync™ Controller for Liebert® NX™ 225-600kVA UPS
User Manual
The information contained in this document is subject to change
without notice and may not be suitable for all applications. While
every precaution has been taken to ensure the accuracy and
completeness of this document, Vertiv assumes no responsibility
and disclaims all liability for damages resulting from use of this
information or for any errors or omissions. Refer to other local
practices or building codes as applicable for the correct methods,
tools, and materials to be used in performing procedures not
specifically described in this document.
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
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Names of companies and products are trademarks or registered
trademarks of the respective companies. Any questions regarding
usage of trademark names should be directed to the original
manufacturer.
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If you encounter any installation or operational issues with your product, check the pertinent
section of this manual to see if the issue can be resolved by following outlined procedures.
Visit https://www.VertivCo.com/en-us/support/ for additional assistance.
TABLE OF CONTENTS
IMPORTANT SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
SAVE THESE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.0 INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1 Installation Kit - 10B14515G1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.2 Mechanical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.0 TYPICAL CONFIGURATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1 Two Systems with Separate Utility Supplies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Two UPS Units With Common Bypass Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Liebert® Systems and Electrical Generating Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.4 Liebert® NX™ and Third-Party Brand UPS in the Same Installation. . . . . . . . . . . . . . . . . . . . . . 8
3.0 INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1 Installation Kit - 10B14515G1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.2 Installation Tips. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.3 Appendix C - Liebert® NX™ 225-600kVA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.3.1 Setting Parameters - Enable External Synchronization Control . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.3.2 Offset Compensation Tuning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.3.3 Procedure complete for UPS1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.4 Installation Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
FIGURES
Figure 1 Rear panel reference supply input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Figure 2 Front panel UPS sync. outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Figure 3 Two separate utility supplies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 4 Common bypass line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 5 Liebert® NX™ systems and electrical generating devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 6 Liebert® NX™ and third-party brand UPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 7 Installation example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Figure 8 Offset compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 9 Synchro Error 88,56 [°] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 10 Synchro Error 0 [°] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 11 Installation example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
TAB LES
Table 1 Installation Kit - 10B14515G1 components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Table 2 Electrical Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Table 3 Installation Kit - 10B14515G1 components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Vertiv™ |Liebert® Load Bus Sync™ Controller Installation Manual | i
Vertiv™|Liebert® Load Bus Sync™ Controller Installation Manual | ii
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
This manual contains important instructions that should be followed during installation of your
Liebert® Load Bus Sync™ Controller. The Liebert® Load Bus Sync™ installation must be performed
only by properly trained and qualified personnel.
Read this manual thoroughly, paying special attention to the sections that apply to your
installation, before working with the UPS. Retain this manual for use by installing personnel.
Before beginning to install the Liebert® Load Bus Sync™ Controller verify that:
®
• The Liebert
indicators are extinguished)
• The UPS and the Liebert
remote power supplies.
• All power supplies upstream of the UPS are switched Off. Should the UPS be switched On, carry out the
shutdown procedure as described in the unit’s user manual.
™
NX
UPS and the Liebert® Load Bus Sync™ Controller are switched Off (all front-panel
®
Load Bus Sync™ Controller and related installations are isolated from all local and
WARNING
Risk of electric shock. Can cause injury and death.
Under typical operation and with all UPS doors closed, only normal safety precautions are
necessary. The area around the UPS system should be kept free of puddles of water, excess
moisture and debris.
Special safety precautions are required for procedures involving handling, installation and
maintenance of the UPS system and the batteries. Observe all safety precautions in this
manual before handling or installing the UPS system. Observe all precautions in this
manual, before as well as during performance of all maintenance procedures. Observe all
battery safety precautions before working on or near the battery.
This equipment contains circuits that are energized with high voltage. Only test equipment
designed for troubleshooting should be used. This is particularly true for oscilloscopes.
Always check with an AC and DC voltmeter to ensure safety before making contact or
using tools. Even when the power is turned Off, dangerously high electric charges may exist
within the UPS or Liebert
All power and control wiring should be installed by a qualified electrician. All power and
control wiring must comply with the NEC and applicable local codes.
ONLY qualified service personnel should perform maintenance on the UPS system. When
performing maintenance with any part of the equipment under power, service personnel
and test equipment should be standing on rubber mats. The service personnel should wear
insulating shoes for isolation from direct contact with the floor (earth ground).
Never work alone, even if all power is removed from the equipment. A second person
should be standing by to assist and summon help in case an accident should occur.
®
Load Bus Sync™ Controller.
NOTICE
Risk of improper electromagnetic shielding. Can cause radio communication interference.
This unit complies with the limits for a Class A digital device, pursuant to Part 15 Subpart J of the FCC
rules. These limits provide reasonable protection against harmful interference in a commercial
environment. This unit generates, uses and radiates radio frequency energy and, if not installed and used
in accordance with this instruction manual, may cause harmful interference to radio communications.
This unit is not designed for use in a residential area. Operation of this unit in a residential area may cause
harmful interference that the user must correct at his own expense.
Vertiv™ |Liebert® Load Bus Sync™ Controller Installation Manual | 1
1.0 INTRODUCTION
The Liebert® Load Bus Sync™ Controller is an option designed for use in complex power source
systems consisting of different distributions and static switches supplied by Vertiv™ and other
manufacturers. It provides synchronization between the Liebert® NX™ 225-600V and third-party
UPS systems when synchronization cannot be guaranteed by the system configuration or when
temporary conditions prevent it (e.g., during battery operation).
The Liebert® Load Bus Sync™ Controller is available as an option with the Liebert® NX™ 225-600V,
either as a factory-installed option or as a kit that is installed and configured by Vertiv™-trained
and certified personnel.
Examples of configurations where the Liebert® Load Bus Sync™ Controller can be used:
• Installation consisting of two Liebert® NX™ 225-600V units
• Installation consisting of a Liebert
• Installation consisting of a Liebert
The Liebert® Load Bus Sync™ Controller option consists of an electronic unit housed in a metal
box that can be mounted near the UPS or inside the electrical distribution panel.
The Liebert® Load Bus Sync™ Controller requires a 480V input reference supply and can be used
to supply two units. When installing the unit inside a distribution panel or UPS, ensure that the
metal box is secured so that it cannot fall or touch metal parts containing hazardous voltages.
Vertiv™ recommends that the unit not be installed behind the second access panel or in front of
the Liebert® NX™ air inlet vents.
®
NX™ 225-600V and electrical generating devices
®
NX™ 225-600V and third-party UPS systems.
The device operates by identifying one of the connected units as the master and using its
frequency as a reference for the other units (slaves). While a non-Liebert® UPS can be used as
the master, only Liebert® UPS’s can be used as slave units. Depending on their configuration, the
slave units will follow the reference frequency all the time, or only when their reserve utility supply
is out of tolerance. The reference frequency will be generated only when the master utility supply
line is within acceptable limits.
The Liebert® Load Bus Sync™ Controller can drive up to two separate units. These units may be
independent of each other or connected in a parallel system. Where the installation consists of
more than two slave units, or the master/slave configuration is not the preferred option, Vertiv™
suggests using Liebert® MultiBus Synchronization Module™ (MBSM), Part No. 10B14545G1.
The Liebert® Load Bus Sync™ Controller does not affect the system’s mean time between failure
(MTBF)—it is not a single point of failure for the system). The individual units will ignore this
signal if it is outside the acceptable limits.
1.1 Installation Kit - 10B14515G1
The equipment is supplied with the following components:
Table 1 Installation Kit - 10B14515G1 components
Item
Description Part #
1 Circuit Board 10B10877G1 1
2 Metal Enclosure — 1
3 RJ-45 Short Cable 10H54910P15 1
4 Installation Manual 10H92873 1
5 Female IEC 10 A plug 10H46776P01/02 1
Quantity
Vertiv™ |Liebert® Load Bus Sync™ Controller Installation Manual | 2
The Liebert® Load Bus Sync™ Controller has the electrical characteristics detailed in Tab le 2.
Table 2 Electrical Characteristics
Minimum Nominal Maximum
Supply voltage (50/60 Hz sinusoidal), volts 180 480 250
Supply current, mA — 14 —
Output current (per channel), mA 25 — 30
Working temperature °F (°C) 14 (-10) — 104 (40)
Phase stability error — 0.18 —
Phase shift within voltage tolerance range, degrees * — 1.5 °
* Voltage within ±10% of nominal value.
1.2 Mechanical Characteristics
The Liebert® Load Bus Sync™ Controller has these dimensions:
• Length = 7.1" (181mm)
• Width = 3.7" (94mm)
• Height = 2.5" (64mm)
Figure 1 Rear panel reference supply input
Vertiv™ |Liebert® Load Bus Sync™ Controller Installation Manual | 3
Figure 2 Front panel UPS sync. outputs
Vertiv™ |Liebert® Load Bus Sync™ Controller Installation Manual | 4
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