Vertiv NetSure7100 Series User manual

NetSure™ 7100 Series
-48 VDC Power System
User Manual
Specification Number: 582127000
Model Number: 7100

Vertiv™ NetSure™ 7100 Series -48 VDC Power System User Manual
Vertiv™ NetSure™ 7100 Series -48 VDC Power System 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 Vertiv is strictly prohibited.
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.
Technical Support Site
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.vertiv.com/en-us/support/ for additional assistance.

Vertiv™ NetSure™ 7100 Series -48 VDC Power System User Manual
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TABLE OF CONTENTS
Admonishments Used in this Document..............................................................................................................................v
Important Safety Instructions.................................................................................................................................................vi
Static Warning ..............................................................................................................................................................................ix
1Customer Documentation Package..................................................................................................................................1
2System Description ...............................................................................................................................................................2
3Operating Procedures..........................................................................................................................................................4
3.1 Controller, Rectifiers, and Converters ........................................................................................................................................................................................................4
3.2 ESTOP Function.............................................................................................................................................................................................................................................................4
3.3 Controller Battery Charge Current Limit Feature...........................................................................................................................................................................4
3.4 Local Controls and Indicators ...........................................................................................................................................................................................................................5
3.5 Procedures when the System is Installed in an Enclosure...................................................................................................................................................13
3.5.1 Removing the Enclosure Rear Panels ...............................................................................................................................................................................13
3.5.2 Removing the Enclosure Side Panels................................................................................................................................................................................13
3.5.3 AC Input Conduit Options............................................................................................................................................................................................................13
4Maintenance...........................................................................................................................................................................15
4.1 System Maintenance Procedures................................................................................................................................................................................................................15
4.2 Adding a Rectifier Module to an Existing Spec. No. 588705000, 588705400, or 588705500 Module Mounting
Assembly.............................................................................................................................................................................................................................................................................15
4.3 Adding a Rectifier or Converter Module to an Existing Spec. No. 588705300 Module Mounting Assembly..................... 16
4.4 Installing a Field Expansion Module Mounting Assembly Spec. No. 588705000 or 588705500 in a System
Installed in a Relay Rack or an Enclosure............................................................................................................................................................................................19
4.5 Installing a Field Expansion Module Mounting Assembly Spec. No. 588705300 in a System Installed in a Relay
Rack 23
4.6 Installing a Field Expansion Module Mounting Assembly Spec. No. 588705400 in a System Installed in a
Relay Rack or an Enclosure..............................................................................................................................................................................................................................27
4.7 Reconfiguring a Dual Voltage Distribution Panel (List DE, DF, DG, DH, DJ, DK, FE, FF, FG, FH, FJ, FK)..................................32
4.8 Changing the Controller’s LVD Control Level for a Contactor........................................................................................................................................41
4.9 Adding a Supplemental Bay in the Field ..............................................................................................................................................................................................41
4.10 Installing Optional Second IB2 (Controller Interface Board) or Optional Second EIB (Controller Extended
Interface Board)..........................................................................................................................................................................................................................................................43
5Troubleshooting and Repair ...........................................................................................................................................44
5.1 Contact Information................................................................................................................................................................................................................................................44
5.2 Controller, Rectifiers, and Converters ....................................................................................................................................................................................................44
5.3 Controller Configuration.....................................................................................................................................................................................................................................44
5.4 System Troubleshooting Information ....................................................................................................................................................................................................44
5.5 Replacement Information.................................................................................................................................................................................................................................. 45
5.6 Replacement Procedures..................................................................................................................................................................................................................................46
5.6.1 Replacing a Rectifier Module (in a Spec. No. 588705000 Module Mounting Assembly) ..............................................46
5.6.2 Replacing a Rectifier or Converter Module (in a Spec. No. 588705300 Module Mounting Assembly) ............46
5.6.3 Replacing a Rectifier Module (in a Spec. No. 588705400 Module Mounting Assembly)...............................................46
5.6.4 Replacing a Rectifier Module (in a Spec. No. 588705500 Module Mounting Assembly)...............................................46
5.6.5 Replacing the Controller..............................................................................................................................................................................................................46
5.6.6 Replacing a Distribution Device............................................................................................................................................................................................46

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5.6.7 Replacing a Distribution Panel (List AA, AB, AC, AD, AE, AF, AG, AH, AJ, AK, BA, BB, BC, BD, BF, and
BH) ...................................................................................................................................................................................................................................................................56
5.6.8 Replacing a Distribution Panel (List AL, AN, DE, DF, DG, DH, DJ, DK, FE, FF, FG, FH, FJ, FK)................................... 59
5.6.9 Replacing a Distribution Panel List AA, AB, AC, AD, AE, AF, AG, AH, AJ, AK, DA, DB, DC, DD, BA, BB,
BC, BD, BE, BF, BG, or BH with a List AL, AN, DE, DF, DG, DH, DJ, or DK, FE, FF, FG, FH, FK .......................................62
5.6.10 Replacing a Distribution Panel (List AA, AB, AC, AD, AE, AF, AG, AH, AJ, AK, DA, DB, DC, DD, BA, BB,
BC, BD, BE, BF, BG, or BH with AM or AP) ....................................................................................................................................................................67
5.6.11 Replacing a Distribution Panel (List AA, AB, AC, AD, AE, AF, AG, AH, AJ, AK, DA, DB, DC, DD, BA, BB,
BC, BD, BE, BF, BG, or BH with EA).....................................................................................................................................................................................70
5.6.12 Circuit Card Replacement Procedures............................................................................................................................................................................73
5.6.13 Replacing a Battery or Load Disconnect Contactor..........................................................................................................................................90

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Admonishments Used in this Document
DANGER
! Warns of a hazard the reader will be exposed to that will likely result
in death or serious injury if not avoided. (ANSI, OSHA)
WARNING
! Warns of a potential hazard the reader may be exposed to that could
result in
death or serious injury if not avoided. This admonition is not used for situations that pose a
risk only to equipment, software, data, or service. (ANSI)
CAUTION
! Warns of a potential hazard the reader may be exposed to that could
result in minor or moderate injury if not avoided. (ANSI, OSHA) This admonition is not
used for situations that pose a risk only to equipment, data, or service, even if such use
appears to be permitted in some of the applicable standards. (OSHA)
ALERT
! Alerts the reader to an action that must be avoided in order to protect
equipment, software, data, or service. (ISO)
ALERT
! Alerts the reader to an action that must be performed in order to prevent
equipment damage, software corruption, data lo
ss, or service interruption. (ISO)
FIRE SAFETY
! Informs the reader of fire safety information, reminders, precautions,
or policies, or of the locations of fire
-fighting and fire-safety equipment. (ISO)
SAFETY
! Informs the reader of general safety information, reminders, precautions, or
policies not related to a particular source of hazard or to fire safety. (ISO, ANSI, OSHA)

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Important Safety Instructions
Safety Admonishments Definitions
Definitions of the safety admonishments used in this document are listed under “Admonishments Used in this Document” on page v.
General Safety
DANGER! YOU MUST FOLLOW APPROVED SAFETY PROCEDURES.
Performing the following procedures may expose you to hazards. These procedures should be performed by qualified
technicians familiar with the hazards associated with this type of equipment. These hazards may include shock, energy,
and/or burns. To avoid these hazards:
a) The tasks should be performed in the order indicated.
b) Remove watches, rings, and other metal objects.
c) Prior to contacting any uninsulated surface or termination, use a voltmeter to verify that no voltage or the expected
voltage is present. Check for voltage with both AC and DC voltmeters prior to making contact.
d) Wear eye protection.
e) Use certified and well maintained insulated tools. Use double insulated tools appropriately rated for the work to be
performed.
Voltages
AC Input Voltages
DANGER! This system may operate from AC input voltage capable of producing fatal electrical shock. AC input power must
be completely disconnected from the branch circuits wiring used to provide power to the system before any AC electrical
connections are made. Follow local lockout/tagout procedures to ensure upstream branch circuit breakers remain de-
energized during installation. DO NOT apply AC input power to the system until all electrical connections have been
completed and checked.
DC Output and Battery Voltages
DANGER! This system produces DC power and may have a battery source connected to it. Although the DC voltage is not
hazardously high, the rectifiers and/or battery can deliver large amounts of current. Exercise extreme caution not to
inadvertently contact or have any tool inadvertently contact an output terminal or battery terminal or exposed wire
connected to an output terminal or battery terminal. NEVER allow a metal object, such as a tool, to contact more than one
termination or battery terminal at a time, or to simultaneously contact a termination or battery terminal and a grounded
object. Even a momentary short circuit can cause sparking, explosion, and injury.
DANGER! Follow local lockout/tagout procedures to ensure DC branch circuit protection devices remain de-energized
during installation at loads, as required.

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Battery
Refer to the battery manufacturer documentation for specific battery safety instructions. The following are general guidelines.
WARNING! Correct polarity must be observed when connecting battery leads.
WARNING! Special safety precautions are required for procedures involving handling, installing, and servicing batteries.
Observe all battery safety precautions in this manual and in the battery instruction manual. These precautions should be
followed implicitly at all times.
WARNING! A battery can present a risk of electrical shock and high short circuit current. Servicing of batteries should be
performed or supervised only by properly trained and qualified personnel knowledgeable about batteries and the required
precautions.
The following precautions should be observed when working on batteries:
•Follow the recommended PPE requirements per the SDS for the battery to be used.
•Batteries are an energy source that can produce high amounts of electrical current.
•Remove watches, rings, and other metal objects.
•Eye protection should be worn to prevent injury from accidental electrical arcs.
•Use certified and well maintained insulated tools. Use double insulated tools appropriately rated for the work to be
performed. Ensure that wrenches with more than one working end have only one end exposed.
•Do not lay tools or metal parts on top of batteries.
•Verify that no current will flow when the battery is connected or disconnected by opening battery disconnects (if
available) or adjusting the system to match battery voltage.
•Risk of explosion if battery is replaced with an incorrect type or if polarity is reversed. Recommended to replace
batteries with the same manufacturer and type, or equivalent.
•Dispose of used batteries according to the instructions provided with the batteries. Do not dispose of batteries in a fire.
They may explode.
•Batteries may generate explosive gases during normal operation. Systems containing batteries should never be installed
in an airtight room or space. Only install in a ventilated environment.
•Batteries may contain sulfuric acid. If battery acid enters your eye, immediately flush your eye with running cold water
for at least 15 minutes. Get medical attention immediately. If battery acid contacts skin or clothing, wash immediately
with soap and water.
•Do not open or mutilate batteries.
•ALWAYS FOLLOW THE BATTERY MANUFACTURER’S RECOMMENDATIONS AND SAFETY INSTRUCTIONS.
ALERT! Performing maintenance and/or troubleshooting procedures may interrupt power to the loads, if battery reserve is
not sufficient.

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Personal Protective Equipment (PPE)
DANGER! ARC FLASH AND SHOCK HAZARD.
Appropriate PPE and tools required when working on this equipment. An appropriate flash protection boundary analysis
should be done to determine the “hazard/risk” category, and to select proper PPE.
Only authorized and properly trained personnel should be allowed to install, inspect, operate, or maintain the equipment.
Do not work on LIVE parts. If required to work or operate live parts, obtain appropriate Energized Work Permits as required
by the local authority, per NFPA 70E “Standard for Electrical Safety in the Workplace”.
Hazardous Voltage
DANGER! HAZARD OF ELECTRICAL SHOCK.
More than one disconnect may be required to de-energize the system before servicing.
Handling Equipment Containing Static Sensitive Components
ALERT! Installation or removal of equipment containing static sensitive components requires careful handling. Before
handling any equipment containing static sensitive components, read and follow the instructions contained on the Static
Warning Page.
Maintenance and Replacement Procedures
CAUTION! When performing any step in procedures that requires removal or installation of hardware, use caution to ensure
no hardware is dropped and left inside the unit; otherwise service interruption or equipment damage may occur.
NOTE! When performing any step in procedures that requires removal of existing hardware, retain all hardware for use in
subsequent steps, unless otherwise directed.

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Static Warning
This equipment contains static sensitive components. The warnings listed below must be observed to prevent damage to
these components. Disregarding any of these warnings may result in personal injury or damage to the equipment.
1. Strictly adhere to the procedures provided in this document.
2. Before touching any equipment containing static sensitive components, discharge all static electricity from yourself by
wearing a wrist strap grounded through a one megohm resistor. Some wrist straps have a built-in one megohm resistor;
no external resistor is necessary. Read and follow wrist strap manufacturer’s instructions outlining use of a specific wrist
strap.
3. Do not touch traces or components on equipment containing static sensitive components. Handle equipment
containing static sensitive components only by the edges that do not have connector pads.
4. After removing equipment containing static sensitive components, place the equipment only on static dissipative
surfaces such as conductive foam or ESD bag. Do not use ordinary Styrofoam or ordinary plastic.
5. Store and ship equipment containing static sensitive components only in static shielding containers.
6. If necessary to repair equipment containing static sensitive components, wear an appropriately grounded wrist strap,
work on a conductive surface, use a grounded soldering iron, and use grounded test equipment.

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Vertiv™ NetSure™ 7100 Series -48 VDC Power System User Manual
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1Customer Documentation Package
This document (UM582127000) provides User Instructions for Vertiv™ NetSure™ -48 VDC Power System Model 7100, Spec. No.
582127000.
NOTE! 582127000 List 100, 101, 102, 203, 500, 501, 502, 503, 600, 601, 900, and 901 are specific configurations of 582127000.
Separate User Instructions and Installation Instructions are provided with these power systems. For 582127000 List 100, 101,
102, 203, 500, 501, 502, and 503; do not use these instructions. Refer to IM582127000100 and UM582127000100 for
instructions. For 582127000 List 600, 601, 900, 901; do not use these instructions. Refer to IM582127000900 and
UM582127000900 for instructions.
The complete Customer Documentation Package consists of…
-48 VDC Power System Installation Manual
•Power System Installation Instructions: IM582127000
NCU Controller User Manual
•NCU Controller User Instructions: UM1M830BNA
USB Drive with All Customer Documentation
•Power System Quick Start Guide: QS582127000
•Power System Installation Instructions: IM582127000
•Power System Installation Instructions: IM582127000100 (instructions for List 100, 101, 102, 203, 500, 501, 502, and 503)
•Power System User Instructions: UM582127000
•Power System User Instructions: UM582127000100 (instructions for List 100, 101, 102, 203, 500, 501, 502, and 503)
•NCU Controller User Instructions: UM1M830BNA
•Rectifier Instructions: UM1R483500e
•Rectifier Instructions: UM1R483500e3
•Rectifier Instructions: UM1R482000e3
•-48 VDC to +24 VDC Converter Instructions: UM1C48241500
•-48 VDC to -58 VDC Converter Instructions: UM1C48582000P3
•Power System “System Application Guide”: SAG582127000
•NCU Controller 2nd Ethernet Port Add-On Kit Instructions: IM559252
•NCU Controller 2nd Ethernet Port Retrofit Kit Instructions: IM559251
•Engineering Drawings
•Also provided on the USB drive is a controller configuration drawing and the controller configuration files loaded into the
controller as shipped.

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2System Description
-48 VDC @ up to 12000 Amperes Power System
The Vertiv™ NetSure™ 7100 DC Power System is an integrated power system containing -48 VDC rectifiers, optional -48 VDC to
+24 VDC converters, optional -48 VDC to -58 VDC converters, intelligent control, metering, monitoring, and distribution.
This power system is designed to power a load while charging a positive grounded battery. This power system is capable of operating
in a batteryless installation or off battery for maintenance purposes. The power system is designed for operation with the positive
output grounded.
This system consists of the following components.
Distribution Cabinet
The system always includes a minimum of one distribution cabinet, which provides DC distribution through fuses and/or circuit
breakers. The distribution cabinet is factory mounted in a relay rack, on shipping brackets, or in an enclosure as specified when
ordered.
Four different sizes of distribution cabinets are available to accept from one (1) to four (4) distribution panels. A variety of distribution
panels are available that provide load distribution, battery distribution, and dual voltage load distribution for use with -48 VDC to
+24 VDC converters or -48 VDC to -58 VDC converters. These distribution panels are configured to accept either bullet nose type
circuit breakers and TPS/TLS fuseholders, TPH fuses, TPL-B fuses, or GJ/218 circuit breakers. A bulk output panel is also available.
The distribution cabinet may be equipped with low voltage load disconnect (LVLD), low voltage battery disconnect (LVBD), and
manual battery disconnect.
Controller
NCU (NetSure Control Unit): The controller provides power system control (including optional low voltage battery disconnect (LVBD)
and low voltage load disconnect (LVLD) control), rectifier control (including a charge control function), converter control, metering
functions, monitoring functions, and local/remote alarm functions. The controller also supports rectifier temperature compensation if
the system is equipped with a temperature probe(s). Temperature probe(s) may also be designated to monitor ambient temperature
and/or battery temperature. The controller also provides data acquisition, system alarm management, and advanced battery and
energy management. The controller contains a color LCD display and keypad for local access. The controller provides an Ethernet
port and comes with comprehensive webpages for remote access. The controller has SNMP v3 capability for remote system
management. The controller supports software upgrade via its USB port. Refer to the NCU Controller Instructions (UM1M830BNA)
for more information.

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Module Mounting Assembly (Spec. No. 588705000)
The system may contain one or more Spec. No. 588705000 module mounting assemblies, each of which houses up to six (6) 3500
watt rectifier modules or six (6) 3500 watt converter modules. Refer to System Application Guide SAG582127000 for more
information.
•Rectifier Modules (for use in Spec. No. 588705000)
The system may contain 3500 watt rectifier modules; which provide load power, battery float current, and battery recharge
current during normal operating conditions. Refer to the Rectifier Instructions (UM1R483500e) for more information.
Module Mounting Assembly (Spec. No. 588705300)
The system may contain one or more Spec. No. 588705300 module mounting assemblies, each of which houses 2000 watt rectifier
modules, optional +24 VDC, 1500 watt DC-DC converter modules, and optional 1600W average (2000W peak) DC-DC converter
modules.Refer to System Application Guide SAG582127000 for more information.
•Rectifier Modules (for use in Spec. No. 588705300)
The system contains 2000 watt rectifier modules, which provide load power, battery float current, and battery recharge
current during normal operating conditions. Refer to the Rectifier Instructions (UM1R482000e3) for more information.
•Optional -48 VDC to +24 VDC Converter Modules (for use in Spec. No. 588705300)
Where +24 VDC load power is also required, 1500 watt DC-DC converter modules are available. Refer to the Converter
Instructions (UM1C48241500) for more information.
•Optional -48 VDC to -58 VDC Converter Modules (for use in Spec. No. 588705300)
Where -58 VDC load power is also required, converter modules are available. These converters operate from the main
-48 VDC system bus to provide -58 VDC load power. Refer to the Converter Instructions (UM1C48582000P3) for more
information.
Module Mounting Assembly (Spec. No. 588705400)
The system may contain one or more Spec. No. 588705400 module mounting assemblies, each of which houses up to six (6) 3500
watt rectifier modules. Refer to System Application Guide SAG582127000 for more information.
•Rectifier Modules (for use in Spec. No. 588705400)
The system contains 3500 watt rectifier modules; which provide load power, battery float current, and battery recharge
current during normal operating conditions. Refer to the Rectifier Instructions (UM1R483500e3) for more information.
Module Mounting Assembly (Spec. No. 588705500)
The system may contain one or more Spec. No. 588705500 module mounting assemblies, each of which houses up to six (6) 4000
watt rectifier modules. Refer to System Application Guide SAG582127000 for more information.
•Rectifier Modules (for use in Spec. No. 588705500)
The system contains 4000 watt rectifier modules; which provide load power, battery float current, and battery recharge
current during normal operating conditions. Refer to the Rectifier Instructions (UM1R483500e) for more information.

Vertiv™ NetSure™ 7100 Series -48 VDC Power System User Manual
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3Operating Procedures
3.1 Controller, Rectifiers, and Converters
For operation instructions on these units, refer to the following documents.
•NCU Controller Instructions (UM1M830BNA)
•Rectifier Instructions (UM1R483500e or UM1R482000e3 or UM1R483500e3)
•-48 VDC to +24 VDC Converter Instructions (UM1C48241500)
•-48 VDC to -58 VDC Converter Instructions (UM1C48582000P3)
3.2 ESTOP Function
If an ESTOP switch is wired to the IB2-1 Controller Interface Board, customer-furnished system ground applied to terminal DI8+
activates the ESTOP function. The ESTOP function shuts down and locks out the rectifiers, shuts down and locks out the optional
-48 VDC to +24 VDC converters, or optional -48 VDC to -58 VDC converters, and opens the optional low voltage disconnect (LVD)
contactors (battery and load type). If the system has battery connected and does not contain a battery LVD or the controller power
option is set to Battery Pwr (jumper J8 on the system interface board is set to Battery Pwr), the controller will remain operational. If
the system does not contain battery or load LVD(s) and has battery connected, the loads will be sustained by the battery voltage.
For Systems NOT Containing a Battery LVD: When the ESTOP signal is removed, LVD contactors (battery and load type) will close
after the “LVD Reconnect Delay” has elapse (customer configurable via the controller) if battery voltage is present on the bus.
Rectifiers and optional -48 VDC to +24 VDC converters or optional -48 VDC to -58 VDC converters will remain off. The rectifiers will
restart when the input power is removed and restored after 30 seconds or more (until the LEDs on the modules extinguish). To
restart the -48 VDC to +24 VDC converters or -48 VDC to -58 VDC converters: remove the converter, wait 30 seconds or more (until
the LEDs on the converter extinguish), then re-insert the converter.
For Systems Containing a Battery LVD: When the ESTOP signal is removed, LVD contactors (battery and load type) will remain open.
Rectifiers and optional -48 VDC to +24 VDC converters or optional -48 VDC to -58 VDC converters will remain off. The rectifiers will
restart when the input power is removed and restored after 30 seconds or more (until the LEDs on the modules extinguish). When
the rectifiers restart, LVD contactors (battery and load type) will close and the -48 VDC to +24 VDC converters or -48 VDC to
-58 VDC converters will restart.
NOTE! If a customer-furnished method to disconnect the input power to the system is not provided, the rectifiers will stay
locked OFF until the input power is recycled. If the ESTOP signal is removed without recycling the input power, the rectifiers
will remain off and have a local alarm visible on the module. The ESTOP alarm from the controller will extinguish. The
controller will not issue an alarm for this condition.
3.3 Controller Battery Charge Current Limit Feature
Functionality: After a failure of the input source (commercial AC or DC) or when some battery cells are permanently damaged, the
current to the batteries can be quite extensive. To avoid overheating or further damages to the battery, the controller can be
programmed to limit the battery current to a preset level by limiting the charging voltage of the rectifiers/converters. Should the
battery current still exceed a higher preset value, an alarm is issued.
The controller limits the current going to the batteries based on the “Battery Current Limit” set point which is a percentage of the
battery capacity in C10. For example, 0.1C10 would mean 10% of the battery capacity.
Refer to the NCU Instructions (UM1M830BNA) to program this feature. Battery charge current is limited to the value set in the
controller, as long as battery voltage is above 47 VDC.

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3.4 Local Controls and Indicators
Refer to the controller, rectifier, and converter instructions for descriptions of the local controls and indicators located on these units.
If the system is installed in an enclosure, an enclosure mounted LED kit is available which provides a factory installed LED located at
the top of the enclosure visible from the front with the door closed. This LED illuminates red if a major or critical alarm activates.
Refer to the next section for descriptions of the local controls and indicators located on the circuit cards installed in the distribution
cabinet.
Circuit Card Locations
Refer to Figure 3.1.

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Figure 3.1 Circuit Card Locations (Main Bay)
Optional SM-DU+ and
Shunt Interface Board
4-Row Cabinet Shown,
Others Similar
(Front Door Removed in
Illustration for Clarity)
Controller
System Interface
Circuit Card
OR
Optional LVD
Driver Circuit Card
Optional LVD
Inhibit Switch
(factory installed
if option specified)
Optional LVD Driver
Lite Circuit Card
Optional Manual Battery
Disconnect Circuit Card
(Main Bay Only)
IB2 (Main Bay Only)
(Interface Board)
(located on inside side panel)
Optional EIB (Main Bay Only)
(Extended Interface Board)
(located on inside side panel)
Optional IB4 (Main Bay Only)
(Second Ethernet Port Board)
Optional Second IB2 or EIB (Main Bay Only)
(underside of cover)

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Figure 3.1 Circuit Card Locations (Supplementary Bay)
4-Row Cabinet Shown,
Others Similar
(Illustration for Clarity)
CAN Interface
Card
OR
Optional LVD
Driver Circuit Card
Optional LVD Driver
Lite Circuit Card
System Interface
Circuit Card
SM-DU

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System Interface Circuit Card
The system interface circuit card contains test points to externally monitor bay voltage and bay load. Refer to Figure 3.2.
Figure 3.2 System Interface Circuit Card
TP3 (+) and TP4 (-)
Bay Load
Shunt Monitoring
TP1 (+) and TP2 (-)
Bay Voltage
Monitoring
J7
TB2
J1
1
1
1
1
J2
J3
J4
J8
TB1
TP1 TP2 TP3 TP4
J5
J10
Bay Load Shunt Scale
List 21, 1-Row Cabinet
800A/ 25mV
32Aper mV
List 22, 2-Row Cabinet
2000A/ 25mV
80Aper mV
List 23, 3-Row Cabinet
2500A/ 25mV
100Aper mV
List 24, 4-Row Cabinet
2500A/ 25mV
100Aper mV

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Optional LVD Driver Circuit Card
The optional LVD driver circuit card installed in the main bay contains an LVD inhibit switch and indicator. Refer to Figure 3.3. LVD
driver circuit cards are required for 2-, 3-, or 4-row distribution cabinets that contain three or more LVD contactors (LVBD and/or
LVLD); or if the distribution cabinet is equipped with an LVBD contactor rated 1200A or higher.
CAUTION! If the switch is returned to the ON (normal) position when low voltage disconnect alarms are active, a low voltage
disconnection will occur.
WARNING! While the LVD inhibit switch is in the OFF (inhibit) position, a low voltage disconnection will not occur if battery
or load voltage decreases below the low voltage disconnect setpoint. For maximum battery protection, this switch should
NOT be left in the OFF (inhibit) position.
ALERT! Do not hold the LVD inhibit switch in the up position for more than 3 seconds to avoid damaging the contactor.
Figure 3.3 Optional LVD Driver Circuit Card
LVD Inhibit Switch
Momentary UP / Middle / Down
Momentary UP Position: Closes all LVD Contactors (inhibit mode).
Middle Position: OFF (Controller DOES NOT control LVD’s) (inhibit mode).
DOWN Position: ON (Controller controls LVD’s).
LVD Inhibit
Active Indicator
Illuminates when the
low voltage disconnect
circuit has been disabled
through the use of the
LVD Inhibit switch.
J6 J5 J4
J3 J2 J1
J9
J7
S1
Note: The UP position will not close the LVBD contactor
if the battery is manually disconnected using the
Manual Battery Disconnect Switch.
Switch and indicator located
on circuit card installed in
Main Bay only.
Main Bay

Vertiv™ NetSure™ 7100 Series -48 VDC Power System User Manual
10
Optional LVD Driver Lite Circuit Card
The optional LVD driver lite circuit card installed in the main bay contains an LVD inhibit switch and indicator. Refer to Figure 3.4.
LVD driver lite circuit cards are required for distribution cabinets that contain two LVLD contactors or one LVLD contactor and one
LVBD contactor. LVBD contactor must be rated at 600A or lower.
CAUTION! If the switch is returned to the ON (normal) position when low voltage disconnect alarms are active, a low voltage
disconnection will occur.
WARNING! While the LVD inhibit switch is in the OFF (inhibit) position, a low voltage disconnection will not occur if battery
or load voltage decreases below the low voltage disconnect setpoint. For maximum battery protection, this switch should
NOT be left in the OFF (inhibit) position.
ALERT! Do not hold the LVD inhibit switch in the up position for more than 3 seconds to avoid damaging the contactor.
Figure 3.4 Optional LVD Driver Lite Circuit Card
LVD Inhibit Switch
LVD Inhibit
Active Indicator
Momentary UP / Middle / Down
Momentary UP Position: Closes all LVD Contactors (inhibit mode).
Middle Position: OFF (Controller DOES NOT control LVD’s) (inhibit mode).
DOWN Position: ON (Controller controls LVD’s).
Illuminates when the
low voltage disconnect
circuit has been disabled
through the use of the
LVD Inhibit switch.
J1J3
J2
S1
Note: The UP position will not close the LVBD contactor
if the battery is manually disconnected using the
Manual Battery Disconnect Switch.
Switch and indicator located
on circuit card installed in
Main Bay only.
Main Bay