Vertiv NetSure 5000 Series User manual

NetSure™ 5100 Series
-48 VDC Power System
User Manual
Specification Number: 582137100
Model Number: 5100

Vertiv™ NetSure™ 5100 Series -48 VDC Power System User Manual
Vertiv™ NetSure™ 5100 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™ 5100 Series -48 VDC Power System User Manual
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TABLE OF CONTENTS
Admonishments Used in this Document......................................................................................................................... iv
Important Safety Instructions ............................................................................................................................................. v
Static Warning ....................................................................................................................................................................... viii
1Customer Documentation Package.............................................................................................................................. 1
2System Description .......................................................................................................................................................... 2
3Operating Procedures ..................................................................................................................................................... 3
3.1 Rectifiers, Solar Converters, -48 VDC to +24 VDC Converters, and Controller..................................................................................................3
3.2 Solar Mode ..........................................................................................................................................................................................................................................................................3
3.3 ESTOP Function.............................................................................................................................................................................................................................................................4
3.4 Controller Battery Charge Current Limit Feature...........................................................................................................................................................................4
3.5 Local Controls and Indicators ...........................................................................................................................................................................................................................4
3.6 List 60 Hybrid Connection Cabinet.............................................................................................................................................................................................................6
4Maintenance ....................................................................................................................................................................... 8
4.1 System Maintenance Procedures..................................................................................................................................................................................................................8
4.2 Adding a Module to an Existing Module Mounting Assembly............................................................................................................................................9
4.3 Installing a Field Expansion Module Mounting Assembly.....................................................................................................................................................13
4.4 Installing Field Expansion Module Mounting Assembly Spacer Kit, P/N 560075 ..........................................................................................17
4.5 Reconfiguring a Dual Voltage Distribution Panel (List DA, DB, DC, DD, DE).....................................................................................................19
4.6 Reconfiguring the Distribution Voltage on Positions 23 to 26 of a List DF Distribution Panel installed in a List
27 Distribution Cabinet.........................................................................................................................................................................................................................................25
4.7 Installing a Front Door Kit .................................................................................................................................................................................................................................30
5Troubleshooting and Repair ........................................................................................................................................ 32
5.1 Contact Information.................................................................................................................................................................................................................................................32
5.2 Controller, Rectifiers, Solar Converters, and -48 VDC to +24 VDC Converters...............................................................................................32
5.3 Controller Configuration......................................................................................................................................................................................................................................32
5.4 System Troubleshooting Information.....................................................................................................................................................................................................32
5.5 Replacement Information..................................................................................................................................................................................................................................34
5.6 Replacement Procedures..................................................................................................................................................................................................................................34
5.6.1 Replacing a Rectifier, Solar Converter, or -48 VDC to +24 VDC Converter Module........................................................... 34
5.6.2 Replacing the NCU Controller................................................................................................................................................................................................34
5.6.3 Replacing a Distribution Device............................................................................................................................................................................................34
5.6.4 Circuit Card Replacement Procedures............................................................................................................................................................................38
5.6.5 Replacing a Distribution Panel in a List 20, 25 Distribution Cabinet....................................................................................................51
5.6.6 Replacing a Distribution Panel in a List 21, 26 Distribution Cabinet................................................................................................... 54
5.6.7 Replacing a Battery or Load Disconnect Contactor in a List 20, 25 Distribution Cabinet..............................................57
5.6.8 Replacing a Battery or Load Disconnect Contactor in a List 21, 26 Distribution Cabinet..............................................60

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iv
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 loss, 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 iv.
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.
f) For systems operating with 400 VDC power, do not work on an energized system without full arc flash and PPE
protection.
Voltages
AC Input Voltages
DANGER! This system operates 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 Input Voltages
DANGER! This system may operate from 400 VDC input voltage capable of producing fatal electrical shock. DC input power
must be completely disconnected from the branch circuits wiring used to provide power to the system before any DC
electrical connections are made. Follow local lockout/tagout procedures to ensure upstream branch circuit breakers remain
de-energized during installation. DO NOT apply DC input power to the system until all electrical connections have been
completed and checked.

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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.
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.

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•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.
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.

Vertiv™ NetSure™ 5100 Series -48 VDC Power System User Manual
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1Customer Documentation Package
This document (UM582137100) provides User Instructions for -48 VDC Power System Model NetSure 5100, Spec. No. 582137100.
The complete Customer Documentation Package consists of…
-48 VDC Power System Installation Manual
•Power System Installation Instructions: IM582137100
NCU Controller User Manual
•NCU Controller User Instructions: UM1M830BNA
USB Drive with All Customer Documentation
•Power System Installation Instructions: IM582137100
•Power System User Instructions: UM582137100
•Power System “System Application Guide”: SAG582137100
•Module Mounting Assembly Power Data Sheet: PD588705300
•NCU Controller User Instructions: UM1M830BNA
•Rectifier Instructions: UM1R482000E3
•Solar Converter Instructions: UM1S482000E3
•-48 VDC to +24 VDC Converter Instructions: UM1C48241500
•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
The Power Distribution Center…
•List 20, 25 (One Row Distribution Cabinet) is rated…
-48 VDC; 400 A at 40 °C.
-48 VDC; 300 A at 65 °C.
•List 27 (One Row Distribution Cabinet) is rated…
Charge Ratings:
-48 VDC; 600 A and +24 VDC; 63 A at 40 °C.
-48 VDC; 525 A and +24 VDC; 50 A at 65 °C.
Discharge Ratings:
-48 VDC; 771 A at 40 °C.
-48 VDC; 600 A at 65 °C.
•List 21 (Two Row Distribution Cabinet) is rated…
-48 VDC; 600 A (400 A maximum per row) at 40 °C.
-48 VDC; 400 A (300 A maximum per row) at 65 °C.
•List 26 (Two Row Distribution Cabinet) is rated…
-48 VDC; 600 A (400 A maximum per row) and +24 VDC; 400 A at 40 °C.
-48 VDC; 400 A (300 A maximum per row) and +24 VDC; 300 A at 65°C.
The NetSure 5100 DC Power System is an integrated power system containing rectifiers (-48 VDC output), optional solar converters
(-48 VDC output), optional converters (+24 VDC output), intelligent control, metering, monitoring, and distribution. This power
system is available in configurations for 19” and 23” rack mounting.
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 distribution cabinet, which provides DC distribution through fuses and/or circuit breakers. The
distribution cabinet is factory mounted in the relay rack specified when ordered. Different sizes of distribution cabinets are available
to accept from one (1) to two (2) 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. These distribution panels are
configured to accept bullet nose type circuit breakers and TPS/TLS fuseholders. The distribution cabinet may be equipped with low
voltage load disconnect (LVLD) and/or low voltage battery disconnect (LVBD) (depending on available configuration options).
Controller
NCU (NetSure Control Unit) Controller: The NCU 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), solar
converter control, -48 VDC to +24 VDC 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 TFT 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
The system contains one (1) to five (5) module mounting assemblies (depending on system configuration, see SAG582137100), which
may house rectifier modules, optional solar converter modules, optional -48 VDC to +24 VDC converter modules, and a controller
(depending on configuration, see PD588705300). Refer to PD588705300 for additional information.
Rectifier Modules
The system contains 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 Solar Converter Modules
The system may contain solar converter modules (depending on configuration, see SAG582137100), which provide load power,
battery float current, and battery recharge current during solar conditions. Refer to the Solar Converter Instructions
(UM1S482000E3) for more information.
Optional -48 VDC to +24 VDC Converter Modules
Where +24 VDC load power is also required, converter modules are available (depending on configuration, see SAG582137100).
These converters operate from the main -48 VDC system bus to provide +24 VDC load power. Refer to the Converter Instructions
(UM1C48241500) for more information.
3Operating Procedures
3.1 Rectifiers, Solar Converters, -48 VDC to +24 VDC Converters, and
Controller
For operation instructions on these units, refer to the following documents.
•Rectifier Instructions (UM1R482000E3)
•Solar Converter Instructions (UM1S482000E3)
•-48 VDC to +24 VDC Converter Instructions (UM1C48241500)
•NCU Controller Instructions (UM1M830BNA)
NOTE! The controller’s default “User Name” is "admin" and the default “Password” is “640275”.
3.2 Solar Mode
Description
You have the option to set the system for solar mode (RECT-SOLAR or SOLAR) or to disable solar mode.
RECT-SOLAR: If you have both rectifiers and solar converters in the system, set Solar Mode to “RECT-SOLAR”. Also set the “Float
Charge Voltage (Solar)” parameter to the desired float setting. The parameter “Float Charge Voltage (Rect)” setting MUST be set 0.5
V lower than the “Float Charge Voltage (Solar)” parameter setting for solar converters to operate properly.
SOLAR: If you have only solar converters in the system, set Solar Mode to “SOLAR”. Also set the “Float Charge Voltage (Solar)”
parameter to the desired float setting.
Enabling Solar Mode
Local Menu Navigation:
None.

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Web Menu Navigation:
Settings / System Tab / Solar Mode / set to “SOLAR” or “RECT-SOLAR” or “Disabled”.
NOTE! When solar converters are all installed prior to applying power and starting system, the NCU will NOT communicate
with solar converters until SOLAR MODE is enabled.
3.3 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 and solar converters, shuts down and
locks out the optional -48 VDC to +24 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 J4 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, solar converters, and -48 VDC to +24 VDC converters will remain off. The rectifiers and solar converters will restart when
the input power to these 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: 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, solar converters, and -48 VDC to +24 VDC converters will remain off. The rectifiers and solar converters will restart when
the input power to these 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 after the “LVD Reconnect Delay” has elapse (customer
configurable via the controller) and the -48 VDC to +24 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.
3.4 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 and solar 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. If the C10 capacity of a battery is 100 amp-hr,
the battery recharge current limiting setpoint is 0.1C10; therefore, the recharge current is limited to 10 A.
Refer to the NCU Controller 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.
3.5 Local Controls and Indicators
General
Refer to the Controller, Rectifier, Solar Converter, and -48 VDC to +24 VDC Converter Instructions for descriptions of the local
controls and indicators located on these units.

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Optional Critical Alarm Indicator
The system may be equipped with an optional critical alarm indicator which illuminates if the NCU controller issues a critical alarm.
Refer to Figure 1.
List KG GMT Load Distribution Fuse Panel
Refer to Figure 2for indicator locations.
PWR A and PWR B Indicators: These indicators illuminate (green) to indicate power is supplied to the A and B sides of the panel,
respectively.
NOTE! The split (A/B) input bus option provided on this panel is strapped for a single input in this power system.
FUSE ALARM Indicator: This indicator illuminates (red) to indicate a load distribution fuse is open. The open fuse also provides a
mechanical indicator visible through the fuse safety cover.
Optional Transient Voltage Surge Suppressor (TVSS) Device
An optional Transient Voltage Surge Suppressor (TVSS) device contains an indicator which illuminates when the circuit activates to
suppress voltages. See Figure 3.
Figure 1: Optional Critical Alarm Indicator
Figure 2: Indicator Locations (List KG)
Optional
Critical Alarm
Indicator
Front
(1-row cabinet shown, 2-row cabinet similar)
Front
PWR
A
PWR
B
FUSE
ALARM

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Figure 3: Optional Transient Voltage Surge Suppressor (TVSS) Device Indicator
3.6 List 60 Hybrid Connection Cabinet
The hybrid connection cabinet provides four (4) circuit breaker positions up to 600 A and one (1) circuit breaker position up to 400 A
for -48 VDC distribution to battery and alternate energy sources.
The hybrid connection cabinet includes an SM-DU for monitoring of the circuit breakers internal shunts.
Hybrid Connection Cabinet Circuit Breaker Shunt Ratings
See Table 1.
Table 1: Hybrid Connection Cabinet Circuit Breaker Shunt Ratings
Circuit Breaker Size Shunt Current Rating Shunt Voltage Rating
100 A 100 A 25 mV
125 A 125 A 25 mV
150 A 150 A 25 mV
175 A 175 A 25 mV
200 A 200 A 25 mV
225 A 225 A 25 mV
250 A 250 A 25 mV
300 A 300 A 25 mV
350 A 350 A 25 mV
400 A 400 A 25 mV
600 A 600 A 25 mV
SM-DU Parameter Settings
•Shunt # Set As (Not Used, General, Load, Battery)
a) Not Used: Indicates this shunt input is not used.
b) General: Indicates the measurement of the shunt will be displayed and will not be added to Total DC Load or Total
Battery Load.
TVSS Indicator

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c) Load: Indicates the measurement of the shunt will be displayed and added to the Total DC Load.
d) Battery: Indicates the measurement of the shunt will be displayed and added to the Total Battery Load and used with
Battery Management.
•Shunt # Current (Rating of Shunt.)
•Shunt # Voltage (Rating of Shunt.)
•Current # Break Value (Device Rating.)
•Current # High Current Limit (% of Current # Breaker Value.)
•Current # Very High Current Limit (% of Current # Breaker Value.)
SM-DU Circuit Card Indicators
The SM-DU is used in a List 60 Hybrid Connection Cabinet. The SM-DU monitors the internal shunts in the cabinet.
There are three (3) status and alarm indicators located on the SM-DU. The functions of these indicators are as shown in Table 2.
Refer to Figure 4for location.
Table 2: SM-DU Indicators
Indicator Normal State Fault State Fault Cause
Operation
(Green) On
Off SM-DU is non-operational.
Flashing
A 1/3Hz flashing indicates the SM-DU is
being identified by the Controller.
A 1Hz flashing indicates a communication
failure.
Alarm
(Yellow) Off On A minor alarm.
Alarm
(Red) Off On A critical or major alarm.

Vertiv™ NetSure™ 5100 Series -48 VDC Power System User Manual
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Figure 4: SM-DU Circuit Card in a List 60 Hybrid Connection Cabinet
4Maintenance
4.1 System Maintenance Procedures
It is recommended to perform the maintenance procedures listed in Table 3every 6-months to ensure continual system operation.
Table 3: Maintenance Procedures to be Performed at 6-Month Intervals
Procedure Referenced In
Check ventilation openings for obstructions
such as dust, papers, manuals, etc. --
Inspect and tighten all installer's
connections. IM582137100

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4.2 Adding a Module to an Existing Module Mounting Assembly
To increase system current capacity, a rectifier or solar converter module can easily be added to an existing module mounting
assembly that contains an empty rectifier module or solar converter module mounting position. Likewise, to increase subsystem
capacity, a -48 VDC to +24 VDC converter module can be added to a module mounting assembly that contains an empty -48 VDC to
+24 VDC converter module mounting position.
Rectifier, solar converter, and -48 VDC to +24 VDC converter modules can be inserted or removed with power applied (hot
swappable).
Procedure
NOTE! Each module locks into the module mounting assembly by means of a latch located on the bottom of the module.
The latch and module handle are interactive. Pushing the handle up into the module’s front panel causes the latch to extend
to the locking position; pulling the handle down out from the module’s front panel causes the latch to retract. See
Figure 5 ,
Figure 6 , or Figure 7 .
WARNING! To prevent damage to the latching mechanism, ensure the handle is in the open position when installing or
removing a module. NEVER hold the handle in the closed position when installing a module into a module mounting
assembly.
1. Unpack the modules.
2. Note the model number located on the front of each module. Model numbers starting with the letter “R” are rectifier modules.
Model numbers starting with the letter “C” are converter modules. Model numbers starting with the letter “S” are solar
converter modules.
3. Place the module into an unoccupied mounting position without sliding it in completely. Each module mounting assembly
may house rectifier modules, optional solar converter modules, optional -48 VDC to +24 VDC converter modules, and a
controller (depending on configuration).
NOTE! Refer to the module position identification label located either on the inside of the distribution cabinet door (rack
mounted systems) or inside the OSP cabinet when no door is furnished for acceptable rectifier, solar converter, and -48 VDC
to +24 VDC converter module mounting positions in the specific module mounting assembly(s) contained in your system.
See
Figure 8 .
NOTE! See PD588705300 for additional acceptable module position details.
4. Loosen the captive screw on the module’s handle. Pull the handle down out from the module’s front panel (this will also
retract the latch mechanism). See Figure 5, Figure 6, or Figure 7.
5. Push the module completely into the module mounting assembly.
6. Push the handle up into the module’s front panel. This will lock the module securely to the module mounting assembly.
Tighten the captive screw on the handle.
7. Repeat the above steps for each module being installed in the system.
8. After the modules are physically installed in the mounting module mounting assembly(s), they are ready for operation
immediately after power is supplied to them.

Vertiv™ NetSure™ 5100 Series -48 VDC Power System User Manual
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NOTE! It is recommended that the current limit point be checked whenever a rectifier or -48 VDC to +24 VDC converter is
added to or removed from the power system. Refer to “Checking the Controller’s Current Limit Point after Adding or
Removing a Rectifier or -48 VDC to +24 VDC Converter Module” on page 32.
NOTE! The rectifier, solar converter, or -48 VDC to +24 VDC converter module being replaced is assigned by the NCU the
lowest available identification number. If desired, you can change the identification number, see “Configuring the NCU
Identification of Rectifiers”, “Configuring the NCU Identification of Solar Converters”, or “Configuring the NCU Identification of
-48 VDC to +24 VDC Converters” in the separate Power System Installation Manual (IM582137100).
Figure 5: Installing Rectifier and Solar Converter Modules (List 20, 25)

Vertiv™ NetSure™ 5100 Series -48 VDC Power System User Manual
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Figure 6: Installing Rectifier, Solar Converter, and -48 VDC to +24 VDC Converter Modules (List 21, 26)

Vertiv™ NetSure™ 5100 Series -48 VDC Power System User Manual
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Figure 7: Installing Rectifier and -48 VDC to +24 VDC Converter Modules (List 27)
Figure 8: Module Position Identification Label
Rectifier or Converter Module
Model Number Label
(R48-2000e3 Rectifier)
(S48-2000e3 Solar Converter)
(C48/24-1500 Converter)
Captive Screw
Latch
Handle
Front
Up to Four (4) Additional Module Mounting Shelves
588705300
List 01, 04, 05: Rectifier, Solar Converter,
Converter Mounting Positions
List 21, 24, 25: Rectifier, Solar Converter
Mounting Positions
(See PD588705300)
One (1) Module Mounting Shelf w/ Controller
588705300 List 11, 14, 15: Controller, Rectifier,
Solar Converter Mounting Positions
(See PD588705300)
23-inch, 1-Row
Distribution Cabinet
The distribution panel is shipped configured
with all -48 VDC distribution positions.
When using converter modules, you MUST
change the last four (4) positions to +24
VDC distribution positions in the field.