Liebert LBS Controller for Liebert NX 225-600kVA UPS · Vertiv™ | Liebert® LBS Controller™ for Liebert NX™ 225-600kVA UPS Installation Manual | Rev. 1 | 02/2017 2 1.0 INTRODUCTION

Liebert® LBS Controller™ for Liebert NX™ 225-600kVA UPSUser Manual

Vertiv™ | Liebert®XXXXXXXXXX User Manual | Rev.0 | 01/17

Vertiv™ | Liebert® LBS Controller™ for Liebert NX™ 225-600kVA UPS Installation Manual | Rev. 1 | 02/2017 iManuali

TABLE OF CONTENTSIMPORTANT SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

SAVE THESE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

1.0 INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21.1 Installation Kit - 10B14515G1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21.2 Mechanical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

2.0 TYPICAL CONFIGURATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52.1 Two Systems with Separate Utility Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52.2 Two UPS Units With Common Bypass Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62.3 Liebert Systems and Electrical Generating Devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62.4 Liebert NX and Third Party Brand UPS in the Same Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

3.0 INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103.1 Installation Kit - 10B14515G1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103.2 Installation Tips. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103.3 Appendix C - Liebert NX 225-600kVA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

3.3.1 Setting Parameters - Enable External Synchronization Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103.3.2 Offset Compensation Tuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113.3.3 Procedure complete for UPS1; . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3.4 Installation Example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

FIGURESFigure 1 Rear panel reference supply input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3Figure 2 Front panel UPS sync. outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Figure 3 Two separate utility supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5Figure 4 Common bypass line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Figure 5 Liebert NX systems and electrical generating devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7Figure 6 Liebert NX and third-party brand UPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8Figure 7 Installation example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Figure 8 Offset compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Figure 9 Synchro Error 88,56 [°] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Figure 10 Synchro Error 0 [°] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Figure 11 Installation example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

TABLESTable 1 Installation Kit - 10B14515G1 components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2Table 2 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3Table 3 Installation Kit - 10B14515G1 components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Vertiv™ | Liebert® LBS Controller™ for Liebert NX™ 225-600kVA UPS Installation Manual | Rev. 1 | 02/2017 iiManualii

Vertiv™ | Liebert® LBS Controller™ for Liebert NX™ 225-600kVA UPS Installation Manual | Rev. 1 | 02/2017 1

IMPORTANT SAFETY INSTRUCTIONSSAVE THESE INSTRUCTIONSThis manual contains important instructions that should be followed during installation of your Liebert LBS (Load Bus Sync) Controller. The Liebert LBS 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 LBS Controller verify that:• The Liebert NX UPS and the Liebert LBS Controller are switched Off (all front-panel indicators are extinguished)• The UPS and the Liebert LBS Controller and related installations are isolated from all local and 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.

NOTICERisk 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.

WARNINGRisk 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 LBS Controller.

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.


1.0 INTRODUCTIONThe 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 LBS 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 LBS Controller can be used:• Installation consisting of two Liebert NX 225-600V units• Installation consisting of a Liebert NX 225-600V and electrical generating devices• Installation consisting of a Liebert NX 225-600V and third-party UPS systems.

The Liebert LBS 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 LBS 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.

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 LBS 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 LBS 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 - 10B14515G1The equipment is supplied with the following components:

Table 1 Installation Kit - 10B14515G1 components

Item Description Part # Quantity

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


The Liebert LBS controller has the electrical characteristics detailed in Table 1.

1.2 Mechanical CharacteristicsThe Liebert LBS Controller has these dimensions:

• Length = 7.1" (181mm)• Width = 3.7" (94mm)• Height = 2.5" (64mm)

Figure 1 Rear panel reference supply input

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.


Figure 2 Front panel UPS sync. outputs


2.0 TYPICAL CONFIGURATIONS2.1 Two Systems with Separate Utility SuppliesWhen two UPS’s are connected to separate power sources, the inverters attempt to synchronize with their respective bypass lines, but the lines may not be in phase, so synchronization cannot be guaranteed. Even if the two units are supplied from a common line, when one or both is operating on-battery there will be no common input signal, and the outputs will not be synchronized. When the Liebert LBS Controller is installed, one of the UPS outputs must be chosen as the master, all the other UPS (slave) outputs will then follow this reference: see Figure 3 for details.Figure 3 Two separate utility supplies

N.B. fuses should be installed in the phase signal line, upstream of the Liebert LBS Controller to protect against the damage caused by short circuits. Installation tips: UPS B should be configured so that it follows the external synchronization signal. This is achieved by setting the main synchronization source to external signal. Otherwise, the UPS will be in phase with its own bypass line and will follow external synchronization only when this is out of tolerance.

Power Source A Power Source B

SlaveMaster

UPS A UPS B

Source Line B

Source Line A

Static Switch

To Others Static Switch

To LoadTo Others Static Switch

Liebert LBS Controller


2.2 Two UPS Units With Common Bypass LineWhen two UPS’s are connected with a common bypass line, the bypass line synchronizes the two inverters. Synchronization can be lost because of protection upstream of the bypass line. Using the following solution, the two systems will be always synchronized, even if one of the two bypass lines is out of tolerance. These units will usually be capable of synchronous operation.

Figure 4 Common bypass line

N.B. fuses should be connected at the beginning of the signal line to avoid fires in case of short circuit in the wires.

2.3 Liebert Systems and Electrical Generating DevicesThe Liebert LBS Controller can be used to provide phase reference to the Liebert NX UPS in installations with alternative power sources, such as diesel generators, see Figure 5.

NOTEUPS A and UPS B should be configured with main synchronization source to bypass. Otherwise the UPS’s won’t be capable of synchronous transfer to bypass.

Power Source B

UPS B

Power Source A

UPS A

Source Line B

Source Line A

UPS A

L1 -Phase Signal

Neutral

L1 -Phase Signal

Common Bypass Line

Static Switch

To Load To Others Static Switch

UPS B




SlaveMaster


Figure 5 Liebert NX systems and electrical generating devices

N.B. fuses should be installed in the phase signal line, upstream of the Liebert LBS Controller, to protect against the damage caused by short circuits.

Source Line B

Source Line A

Power Source

UPS


Static Switch

To Load

Master Power Source

L1 -Phase Signal

Neutral

To Others St ti S it h

To Others St ti S it h


2.4 Liebert NX and Third Party Brand UPS in the Same InstallationThe device can also be used to synchronize a Liebert NX UPS with other manufacturer’s UPS systems. The Liebert NX units must be configured as slave devices so that they follow the phase reference signal derived from the non-Liebert master UPS. UPS #1 and UPS #2 may be configured as parallel or single units, see Figure 6.

Figure 6 Liebert NX and third-party brand UPS

Installation Tips: UPS #1 and UPS #2 should be configured to follow the external synchronization signal. This is achieved by setting the main synchronization source to external signal. If UPS #1 and UPS #2 are not set to follow the external synchronization signal, the UPS will be in phase with its own bypass line and will follow external synchronization only when the bypass line is out of tolerance.

Source Line B

Source Line A

Power Source B2

UPS 2

Power Source B1

UPS 1

To Load To Others Static Switch

Power Source A

UPS 1

UPS 2

L1 -Phase Signal

Neutral


Static Switch



Figure 7 Installation example

Third-Party UPS

(not by Vertiv)

Liebert LBS

Liebert NX UPS Parallel System

Short connection between UPS’s and Liebert LBS

Long connection between Master source and Liebert LBS

FuseFloor 1 Supply

Floor 2 Supply

Floor X Supply


3.0 INSTALLATION3.1 Installation Kit - 10B14515G1The equipment is supplied with the following components:

Connect the PE, and master phase and neutral signals to the Liebert LBS Controller reference signal input (see Figure 1) using the female IEC 10 A plug and a suitable power cable.

Connect the slave UPS to the Liebert LBS Controller UPS output (see Figure 2) using the RJ-45 short cable.

3.2 Installation Tips• Connect the Liebert LBS Controller input earth cable to a protective earth terminal.• Position the Liebert LBS Controller near to the slave units.• Use shielded RJ-45 cables.• Connect the RJ-45 cable (10H54910P15) directly to the control board; do not use terminals to extend connections.• Position the Liebert LBS Controller in a suitable location, protected from harmful conditions such as: vibration, dust,

corrosive atmospheres and high humidity.• Install a 2A slow-blow fuse on the phase signal line as close as possible to the master unit• If the Liebert LBS is mounted on top of a UPS, ensure that it does not obstruct air outlets.

NOTICE Risk of improper electrical connections. Can cause equipment damage.The Liebert LBS must be supplied from L1 and N.

3.3 Appendix C - Liebert NX 225-600kVA

3.3.1 Setting Parameters - Enable External Synchronization ControlOnce all connections are completed, switch on QS1 on the first UPS and set the following parameters:

1. In PPVis, click on “Service Tools” and select “Parameter.”2. Set “Access level” to “Superservice”: PNU 51=4.3. Set “Function Selection” to “HW-In it”: PNU 52=2.4. Set “External synchronization control” to “Enable:” PNU 700=1.5. Set “Function selection” back to “Return”: PNU 52=0.6. Set “Access level” back to “Normal operation:” PNU 51=1.7. Once back in normal operation, open QS1 and the electronics will shut down.

Table 3 Installation Kit - 10B14515G1 components

Item Description Part # Quantity

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

NOTEOnce the connections above have been completed, follow the procedure related to the UPS model in 3.3 - Appendix C - Liebert NX 225-600kVA


Follow these steps for ALL the units connected to Liebert LBS Controller.

1. In this case in PPVis click on “Service Tools” and select “Parameter” -> “Parameter set” -> “DIC1 - Service commissioning” 2. Set PNU 51 “Access level” to “Superservice(4).”3. Set PNU 52 “Function Selection” to “HW-Init(2).”4. Set PNU 700 “External synchronization control” to “Enable(1).”5. Set PNU 52 “Function selection” back to “Return(0).”6. Set PNU 51 “Access level” back to “Normal operation(1).”7. Click on “Send all set values” push button.”8. Once back in normal operation open QS1 and the electronics will shut down.

3.3.2 Offset Compensation TuningThe parameter 731.32 has been designed to compensate the phase error, introduced by the UPS control, between the frequency reference coming from the ESB and the inverter output signal. To carry out this procedure an oscilloscope between reserve input and inverter output must be used. The Liebert LBS Controller must be installed and interconnected to the UPS system. The PNU 700 must be set to 1. The PNU 731.32 calibration must be done on each UPS in the system. Perform the following steps:

1. Connect an oscilloscope to the first UPS.Connect “Channel 1" to “Bypass Input L1 and N” and “Channel 2" to “UPS Output L1 and N”, as shown in Figure 8) Main BUS A.

NOTESince the DIC FW Rev. 1.10 users may change parameters through a graphic interface:


Figure 8 Offset compensation

2. With NO LOAD connected, start the inverter.3. Open the reserve input switch QS2.4. Verify on the oscilloscope the phase error between inverter and bypass. The following figures show an example of NO

SYNC (Figure 9) and SYNC (Figure 10).

Figure 9 Synchro Error 88,56 [°]

Main Bus A

CH1 Oscilloscope

CH2

Fref

ESB

Reserve Input

UPS An


Figure 10 Synchro Error 0 [°]

When there is NO SYNC we need to determine the offset between the two wave forms, in the example Figure 9 there is a difference of 88.56°. To ensure a correct synchronization, enter a value in PNU 731.32 (the offset).

To calculate the offset value:

PNU 731.32 = phase-error [°] * 65536 / 360 PNU 731.32 = 88,56° x 65536 / 360 PNU 731.32 = 16121

After calculating the new value for PNU 731.32, proceed with following steps to change it.1. Close QS2 on the first UPS.2. Wait for the Warning W1.1 - Bypass Switch Open - to be cleared.3. Stop the inverter.4. In PPVis click on Service Tools and select Parameter.5. Set “Access level” to “Superservice”: PNU 51=4.6. Set “Function Selection” to “HW-Init”: PNU 52=2.7. Set PNU 731.32 “EXT_SYNCH_OFFSET” to “the new calculated value” (16121 in our example).8. Set “Function selection” back to “Return”: PNU 52=0.9. Set “Access level” back to “Normal operation”: PNU 51=1.10. Start the inverter and open QS2 again, check that the SYNC is now according to example in Figure 10.11. Close QS2 again.

NOTE1If by using this formula you are not able to compensate the offset, try with the following formula: PNU 731.32 = (360 - phase error [°]) * 65536 / 360


3.3.3 Procedure complete for UPS1;

NOTEThis offset compensation procedure must be followed for ALL the units connected to ESB.


3.4 Installation Example

Figure 11 Installation example

Note the position of the Liebert LBS Controller. This unit’s location should be selected so that the connections to the slave units are as short as possible. Install a 2A slow-blow fuse on the phase signal line, as close as possible to the master unit.

Third-Party UPS

(not by Vertiv)

Liebert LBS

Liebert NX UPS Parallel System

Short connection between UPS’s and Liebert LBS

Long connection between Master source and Liebert LBS

FuseFloor 1 Supply

Floor 2 Supply

Floor X Supply


NOTES



TECHNICAL SUPPORT / SERVICEWeb Site

www.vertivco.comMonitoring

[email protected]

Outside North America: +00800 1155 4499Three-Phase UPS & Power Systems

800-543-2378Outside North America: 614-841-6598

LOCATIONSUnited States

1050 Dearborn DriveP.O. Box 29186

Columbus, OH 43229

EuropeVia Leonardo Da Vinci 8

Zona Industriale Tognana35028 Piove Di Sacco (PD) Italy

+39 049 9719 111Fax: +39 049 5841 257

Asia29/F, The Orient Square Building

F. Ortigas Jr. Road, Ortigas CenterPasig City 1605

Philippines+63 2 687 6615

Fax: +63 2 730 9572

©2016 Vertiv Co. All rights reserved throughout the world

VertivCo.com | Vertiv Headquarters, 1050 Dearborn Drive, Columbus, OH, 43085, USA

Vertiv and the Vertiv logo are trademarks or registered trademarks of Vertiv Co. All other names and logos referred to are trade names, trademarks or registered trademarks of their respective owners.While every precaution has been taken to ensure accuracy and completeness herein, Vertiv Co. assumes no responsibility, and disclaims all liability, for damages resulting from use of this information or for any errors or omissions. Specifications are subject to change without notice.This document may contain confidential and/or proprietary information of Liebert Corporation, and its receipt or possession does not convey any right to reproduce, disclose its contents, or to manufacture or sell anything that it may describe. Reproduction, disclosure, or use without specific authorization from Liebert Corporation is strictly prohibited.SL-25358_REV1_02-17

Documents

Liebert LBS Controller for Liebert NX 225-600kVA UPS · Vertiv™ | Liebert® LBS Controller™ for Liebert NX™ 225-600kVA UPS Installation Manual | Rev. 1 | 02/2017 2 1.0 INTRODUCTION