Alpha Technologies 100VA eLimiter+ User manual

Your Power Solutions Partner
100VA eLimiter+
Installation & Operation Manual
Part # 0120028-J0
Effective: 06/2015
member of The Group™

Cordex eLimiter+
100VA
For technical support, contact Alpha Technologies:
Canada and USA: 1-888-462-7487
International: [phone]
Copyright
Copyright © 2015 Alpha Technologies Ltd. All rights reserved. Alpha is a registered trademark of Alpha Technolo-
gies.
No part of this documentation shall be reproduced, stored in a retrieval system, translated, transcribed, or transmit-
ted in any form or by any means manual, electric, electronic, electromechanical, chemical, optical, or otherwise
without prior explicit written permission from Alpha Technologies.
This document, the software it describes, and the information and know-how they contain constitute the proprietary,
confidential and valuable trade secret information of Alpha Technologies, and may not be used for any unauthorized
purpose, or disclosed to others without the prior written permission of Alpha Technologies.
The material contained in this document is for information only and is subject to change without notice. While
reasonable efforts have been made in the preparation of this document to assure its accuracy, Alpha Technologies
assumes no liability resulting from errors or omissions in this document, or from the use of the information contained
herein. Alpha Technologies reserves the right to make changes in the product design without reservation and with-
out notification to its users.
Alpha shall not be held liable for any damage or injury involving its enclosures, power
supplies, generators, batteries, or other hardware if used or operated in any manner or
subject to any condition inconsistent with its intended purpose, or if installed or oper-
ated in an unapproved manner, or improperly maintained.
Photographs contained in this manual are for illustrative purposes only. These photo-
graphs may not match your installation.
NOTE:
Operator is cautioned to review the drawings and illustrations contained in this manual
before proceeding. If there are questions regarding the safe operation of this powering
system, contact Alpha Technologies or your nearest Alpha representative.
NOTE:
NOTE:

3
0120028-J0 Rev F
Table of Contents
1. Safety �����������������������������������������������������������������������������������������������������������������������������������6
1.1 Safety Symbols .......................................................................................................................... 6
1.2 General Warning and Cautions.................................................................................................. 6
1.3 Mechanical Safety...................................................................................................................... 6
1.4 Electrical Safety ......................................................................................................................... 7
2. Product Overview..................................................................................................................8
2.1 Introduction ................................................................................................................................ 8
2.2 Features and Benets................................................................................................................ 8
2.3 Product Part Numbers ............................................................................................................... 9
3. Product Specications ........................................................................................................10
4. Features..............................................................................................................................12
4.1 Converter Modules................................................................................................................... 12
4.2 CXCI+ Controller...................................................................................................................... 13
4.3 Shelf Connections and Indicators ............................................................................................ 14
4.4 Shelf Accessories..................................................................................................................... 15
5. Site Evaluation and Pre-Installation....................................................................................16
5.1 Installation Locators ................................................................................................................. 16
5.2 Pre-Installation Requirements.................................................................................................. 16
5.3 Packing Materials..................................................................................................................... 16
5.4 Check for Damage ................................................................................................................... 16
5.5 General Receipt of Shipment................................................................................................... 16
6. System Installation..............................................................................................................17
6.1 General Instructions................................................................................................................. 17
6.2 Safety Precautions................................................................................................................... 17
6.3 Tools Required ......................................................................................................................... 17
6.4 Setting the Shelf ID .................................................................................................................. 17
6.5 Input and Output Wiring ........................................................................................................... 20
6.6 Wiring the Alarm Relays........................................................................................................... 27
6.7 Installing the Controller and Converters .................................................................................. 29
6.8 System Startup ........................................................................................................................ 32

0120028-J0 Rev F
4
6.9 Summary of Controller Software.............................................................................................. 33
6.10 LPS Channel Grouping .......................................................................................................... 35
6.11 LPS Channel Custom Text ..................................................................................................... 36
6.12 LPS Alarms ............................................................................................................................ 37
7. Maintenance and Troubleshooting......................................................................................42
7.1 Fan Tray Replacement............................................................................................................. 42
7.2 Fan Filter Maintenance ............................................................................................................ 43
7.3 Troubleshooting Converter Status LEDs.................................................................................. 44
7.4 Troubleshooting the Fan Tray Status LED ............................................................................... 45
7.6 Replacing the Controller .......................................................................................................... 46
7.7 Replacing the Converters ........................................................................................................ 46
7.5 Service Kits .............................................................................................................................. 46
7.8 Replacing an Alarm Relay........................................................................................................ 47
8. Warranty and Service Information ......................................................................................49
9. Acronyms and Denitions ...................................................................................................50
10. Certication.......................................................................................................................51
List of Figures
Figure 1 — eLimiter+ shelf................................................................................................................ 8
Figure 2 — Cordex CXCI+ controller front panel ............................................................................ 13
Figure 3 — Shelf connections......................................................................................................... 14
Figure 4 — Shelf alarm LEDs ......................................................................................................... 14
Figure 5 — Fan and bafe tray rack, mounted ............................................................................... 15
Figure 6 — Multi-shelf system mounting......................................................................................... 18
Figure 7 — Thermal management without a fan tray...................................................................... 19
Figure 8 — Locations for protective earthing terminals for chassis ground (eLimiter+ side view).. 20
Figure 10 — DC input connections (19") ........................................................................................ 21
Figure 9 — DC input wiring connections......................................................................................... 21
Figure 11 — Formex separators between the inputs ...................................................................... 22
Figure 12 — Cut lines for cable input.............................................................................................. 23
Figure 13 — Cut lines for cable input.............................................................................................. 23
Figure 16 — CAN OUT terminator.................................................................................................. 24

5
0120028-J0 Rev F
Figure 14 — CAN and fan connections on the shelf interface panel .............................................. 24
Figure 15 — CAN Bus cabling ........................................................................................................ 24
Figure 17 — Fan tray connections.................................................................................................. 25
Figure 18 — Terminal block and connector pinouts........................................................................ 25
Figure 19 — Recommended load wiring connections .................................................................... 25
Figure 20 — Inserting the channel designation card ...................................................................... 26
Figure 21 — Converter shelf alarm relays ...................................................................................... 27
Figure 22 — Fan tray alarm relay ................................................................................................... 27
Figure 23 — Group reset switches ................................................................................................. 28
Figure 24 — Default setting, independent outputs.......................................................................... 28
Figure 25 — Group reset enabled .................................................................................................. 28
Figure 26 — Installing converters ................................................................................................... 30
Figure 27 — Securing the wires...................................................................................................... 31
Figure 28 — Installing the back cover............................................................................................. 31
Figure 29 — Live graphical view..................................................................................................... 33
Figure 30 — Live table view............................................................................................................ 33
Figure 31 — Channel information for position 6 ............................................................................. 34
Figure 32 — Grouping LPS channels ............................................................................................. 35
Figure 33 — LPS channel custom text ........................................................................................... 36
Figure 34 — LPS alarm highlighting ............................................................................................... 37
Figure 35 — Viewing LPS alarms ................................................................................................... 37
Figure 36 — Conguring LPS alarms ............................................................................................. 38
Figure 37 — Fan tray Live Status ................................................................................................... 38
Figure 38 — Conguring a custom alarm ....................................................................................... 39
Figure 39 — Equation Editor for conguring a Fan Fail alarm........................................................ 39
Figure 40 — Fan Fail alarm ............................................................................................................ 39
Figure 41 — Manage Editable Text Files ........................................................................................ 40
Figure 42 — Custom name change ................................................................................................ 40

0120028-J0 Rev F
6
1� Safety
SAVE THESE INSTRUCTIONS: This manual contains important safety instructions that must be followed during
the installation, servicing, and maintenance of the product. Keep it in a safe place. Review the drawings and il-
lustrations contained in this manual before proceeding. If there are any questions regarding the safe installation or
operation of this product, contact Alpha Technologies or the nearest Alpha representative.
1�1 Safety Symbols
To reduce the risk of injury or death, and to ensure the continued safe operation of this product, the following
symbols have been placed throughout this manual. Where these symbols appear, use extra care and attention.
NOTE:
A NOTE provides additional information to help complete a specic task or procedure.
Notes are designated with a checkmark, the word NOTE, and a rule beneath which the
information appears
CAUTION!
CAUTION indicates safety information intended to PREVENT DAMAGE to material or
equipment. Cautions are designated with a yellow warning triangle, the word CAUTION,
and a rule beneath which the information appears.
WARNING!
WARNING presents safety information to PREVENT INJURY OR DEATH to personnel.
Warnings are indicated by a shock hazard icon, the word WARNING, and a rule beneath
which the information appears.
HOT!
The use of HOT presents safety information to PREVENT BURNS to the technician or
user.
1�2 General Warning and Cautions
WARNING!
This system is designed to be installed in a restricted access location that is inacces-
sible to the general public.
1�3 Mechanical Safety
CAUTION!
Do not disassemble the product – call our qualied service centers for servicing. Incor-
rect reassembling may result in a risk of electrical shock or re.
Do not operate the product if it has received a sharp blow, it has been dropped, or oth-
erwise damaged in any way – return it to a qualied service center for repair.

7
0120028-J0 Rev F
1�4 Electrical Safety
Before working with any live battery or power system, follow these precautions:
a. Remove all metallic jewelry, such as watches, rings, metal rimmed glasses, or necklaces.
b. Wear safety glasses with side shields at all times during the installation.
c. Use OSHA approved insulated hand tools. Do not rest tools on top of batteries.
WARNING!
Lethal voltages are present within the power system. Always assume that an electrical
connection or conductor is energized. Check the circuit with a voltmeter with respect to
the grounded portion of the enclosure (both AC and DC) before performing any installa-
tion or removal procedure.
• Do not work alone under hazardous conditions.
• A licensed electrician is required to install permanently wired equipment. Hazardous voltages are pres-
ent at the input of power systems. Ensure that the utility power is disconnected and locked out before
performing any installation or removal procedure.
• Ensure that no liquids or wet clothes come into contact with internal components.
• Hazardous electrically live parts inside this unit are energized from the batteries even when the AC input
power is disconnected.
• The enclosure which contains the DC or AC power system along with customer installed radios must
remain locked at all times, except when authorized service personnel are present.
• Always assume electrical connections or conductors are live. Turn off all circuit breakers and double-
check with a voltmeter before performing installation or maintenance.
• Place a warning label on the utility panel to warn emergency personnel that a reserve battery source is
present which will power the loads in a power outage condition or if the AC disconnect breaker is turned
off.
• At high ambient temperature conditions, the internal temperature can be hot so use caution when touch-
ing the equipment.
WARNING!
The DC input to the modules (and the converter system) – though not dangerous in volt-
age – has a high short circuit current capacity that may cause severe burns and electri-
cal arcing.
The DC output is a potentially dangerous voltage. Do not touch the output connections
when under power. Ensure that power has been removed from the outputs before work-
ing on them.

0120028-J0 Rev F
8
2� Product Overview
2�1 Introduction
The 100VA eLimiter+ is a unique remote powering solution that meets the NEC requirements for remote power-
ing of electrical devices such as iDAS (indoor distributed antenna systems), remote radios, security cameras,
different sensors, access controllers and alarms. The unit can be used to distribute -48Vdc to remote equipment
without the use of conduits and complies with the NEC requirement for Class 2 power limited circuits.
Power circuits can be combined with fiber optic cables in cost effective easy-to-install composite cables.
The eLimiter+ reduces capital expenditure costs for deployment and simplifies installation of equipment that requires
remote powering such as distributed antenna systems equipment.
2�2 Features and Benefits
• High efficiency >92% for increased operating expenses savings and reduced carbon footprint
• High temperature tolerance for installation in central office or harsh outside plant cabinet environment
• Industry leading power density enabling up to 36 channels in a compact 2RU footprint
• High reliability convection-cooled design with optional fan tray
• Cordex CXCI+ system controller provides advanced remote web based monitoring and control features
The eLimiter+ system consists of one or more converter modules and a CXCI+ controller installed in a common shelf.
The 19" shelf can have up to nine modules. Each converter module contains four isolated DC-DC converters, up to
100 Watt maximum. Input connections can be made at the rear of the unit as well as the front. External connections
are available at the shelf interface panel for alarm interfaces.
Converter modules are purchased separately at time of ordering or later once the converter system has been in-
stalled. Blanks can be ordered separately for empty slots.
Figure 1 — eLimiter+ shelf
Mid mount
brackets
Front input
connections
Shelf inter-
face panel
Rear input connections
(not shown)
CXCI+
Converter slots #1-9
#9
#1

9
0120028-J0 Rev F
2�3 Product Part Numbers
Product Part number
eLimiter+ shelf 0300156-001
eLimiter+ modules 0120028-001
CXCI+ controller 7400232-001
Fan tray 0300055-002
Air bafe 0300055-003
Fan tray replacement 0300055-004
Blanks, (2 blank modules per package) 0380070-001

0120028-J0 Rev F
10
3� Product Specifications
Electrical
Input voltage: -40 to -60Vdc
Recommended breaker:
19" shelf: 70A per feed
Recommended cable size: Minimum #6 AWG (16mm) copper rated for 110˚C
Output voltage: -57Vdc
Power: 98W nominal per output, ± 2W tolerance (4 outputs per module)
Efficiency: >92%
Regulation: <2% no load to full load
<1% line
Output Noise:
Wide band: <50mVRMS (10kHz to 10MHz)
<100mV pk-pk (10kHz to 100MHz)
Acoustic: <60dBa @ 1m (3ft), 55˚C
Connections:
Input: HOT: 2x sets, 1/4" studs on 5/8" centers
RTN: 2x sets, 1/4" studs on 5/8" centers
Output: 9x8 pos. screw door TB (12-26 AWG)
Mechanical
Quad Output Power Module
Dimensions (HxWxD): 86mm x 35mm x 283mm (3.4in x 1.4in x 11.1in)
Weight: 0.61kg (1.4lbs)
19" Shelf - 9 Modules
Dimensions (HxWxD): 89 x 435 x 432mm (3.5in x 17.1in x 17in), with cover
89 x 435 x 329mm (3.5in x 17.1in x 12.95in) without cover/customer connections
Weight: 5.45kg (12lbs)
Environmental
Operating Temperature:
Forced air cooling:
Convection cooling:
- 40 to 65˚C (-40 to 149˚F) with minimum cabinet air ow @200LFM
- 40 to 45˚C (-40 to 122˚F) single shelf operation only or separated by 3RU includes
air bafe
Temperature storage: - 40 to 85˚C (-40 to 185˚F)
Humidity: 0 to 95% RH non-condensing
Altitude: -500 to 2800m (-1640 to 9186ft)
Heat Dissipation: <118 BTU per hour/module
NEBS/Telcordia: Class 3 -Protected Equipment in Severe Outside Environment

11
0120028-J0 Rev F
Performance/ Features
Communication Ports:
CAN: Smart peripherals
Ethernet: 10/100 Base-T for TCIP/SNMP features
Alarm Relays:
Shelf: 1x Form C Major
1x Form C Minor
Fan Tray: 1x Form C fan tray alarm
Alarm indicating LEDs:
Module: One tri color LED per converter—see Table A page 12
Shelf: System OK (green)
Minor alarm (yellow)
Major alarm (red)
Fan tray: Major alarm (red)
MTBF: > 400,000 @30°C (86°F) ambient; test model Telcordia SR-332, Issue 2 (2006)
Agency Compliance
Safety: CSA/UL No 60950-1
EMC: ETSI 300 386
Emissions: CFR47 (FCC) Part 15, Class A
Immunity:
EN 61000-4-2
EN 61000-4-3
EN 61000-4-4
EN 61000-4-5
EN 61000-4-6
NEBS/Telcordia: GR-1089-CORE
GR-63-CORE
NEC:
- Output circuits compliant to NEC article 725 (CEC article 16-200) requirements for
Class 2 power limited circuits
- Output circuits compliant to the NEC Article 830.15 Power Limitation requirements
for Network Powered Broadband communications systems Class 2 output
Isolation: 2250VDC electrical isolation between output and earth/chassis
(compliant with IEEE 802.3 at standard to meet PoE+ isolation requirement)

0120028-J0 Rev F
12
4� Features
4�1 Converter Modules
A module contains four isolated DC to DC converters with a common control and supervisory circuit. An internal
microcontroller monitors both the inputs and outputs of the converters, turns the converters on and off, and
generates a converter fail alarm if required. Each module output operates independently.
4�1�1 Status Indicators
The converter module has four LED indicators – per converter. Refer to section 7.3 for more details. The LEDs are
color-coded to indicate converter status as follows:
4 status LEDs–one per converter
Table A — Converter Status LEDs
LED State Converter Status
Green Normal
Blinking Green Remote shutdown enabled on
individual channel/converter
Blinking Green
(All 4 LEDs)
Remote shutdown enabled on whole
module
Shelf is not compatible with the module
Module not seated properly
Yellow (All 4 LEDs) Recoverable:
• Ambient temperature high
Blinking Yellow (All 4
LEDs)
Input qualify not OK
Blinking Yellow Recoverable:
• OCP/Overload
Non-recoverable:
• Converter Input Fuse fail
Red Locked-State:
• OVP
Non-recoverable:
• Converter Output Fuse fail
Blinking Red Non-recoverable:
• Secondary sensory fail
OFF (All 4 LEDs) Recoverable:
• No power
Non-recoverable:
• Main Input Fuse cut-off
Chasing Green Pattern
(All 4 LEDs)
Non-recoverable:
• Group reset function not working
Chasing Red/Green
Pattern (All 4 LEDs)
Locate feature enabled
4�1�2 Converter Alarms
Two (converter fail) outputs are present at the card edge connector. Alarms are activated after a one second delay
for the following conditions:
• Internal regulation fails
• Output voltage <45V
• Over voltage protection (OVP) operation
• Secondary current sensor fail
• Input fuse or output fuse fail

13
0120028-J0 Rev F
4�2 CXCI+ Controller
The CXCI+ controller is mounted in the converter system shelf and brings advanced monitoring technology to the
Cordex series of converters. This compact system controller is equipped with the complete range of software fea-
tures, including the following:
• Ethernet port for local and remote communications
• User definable alarms
• Daily logging of power system events and system statistics
4� 2 �1 LEDs
Each Controller has three LEDs to display the alarm status of the power system, Controller progress, file transfers
and status during startup.
Alarm Conditions
The Controller illuminates the LED that corresponds to the system alarm status. During alarm conditions, only one
LED is illuminated at a time. The following shows the corresponding alarm status.
Green:OK, no alarms
Yellow:Minor alarm
Red:Major alarm
Progress and Status Indication
The LEDs are also used in the following situations:
• Base unit validation – all three LEDs are on at the same time.
• File transfer – when recovering from invalid firmware application – the red LED is illuminated.
4�2�2 Reset
For reset options, refer to Section "6.12.2 Controller Reset" on page 41.
Ethernet port
Soft reset: push once
Reset IP address: hold for 3 seconds
LCD screen (displays
Voltage or Current)
Display pushbutton toggle
switch for Voltage or Current
Hard reset: push once
System status LEDs
Figure 2 — Cordex CXCI+ controller front panel
Locking screw
• Output short circuit ≤1V
• Input voltage out of range
• Heatsink / ambient temperature out of range (Over Temperature Protection)
NOTE:
Use controller software version V2.20 or higher to take advantage of the full remote
functions and diagnostic features specic to the eLimiter+.

0120028-J0 Rev F
14
Figure 3 — Shelf connections
4�3 Shelf Connections and Indicators
Connections to alarms as well as load connections are conveniently located on the side of each shelf.
Fan power connector
Major alarm relay
Minor alarm relay
CAN connectors
Shelf ID rotary switch
4�3�1 Alarm Relays (Form C Contacts)
The converter shelf has an interface panel with terminal blocks for Major and Minor alarm outputs (Form C contacts),
which are controlled by the CXCI+. The Major alarm relay is designed as a “fail safe” to ensure the alarm is registered
when power is removed.
Major Alarm
The Major alarm relay de-energizes under any one of the following conditions:
• Two or more outputs have failed within a shelf
• One -48V input below 40V
• One -48V input is greater than -60V
Minor Alarm
The Minor alarm relay is energized under any one of the following conditions:
• Single output failed within a shelf
• Internal ambient temperature out of range
Alarm LEDs
There are two LEDs—one red and one yellow, on the front of the interface panel, that indicate shelf alarm status, see
the following figure.
Red Major alarm
Yellow Minor alarm
Off OK, no alarms
Figure 4 — Shelf alarm LEDs

15
0120028-J0 Rev F
Fan status
LED
4�4 Shelf Accessories
4�4�1 Fan Tray and Baffle Tray
The optional fan tray and baffle tray are each 1RU high (Figure 5). They are typically mounted together directly below
the shelf assembly. See Figure 6 on page 18.
Figure 5 — Fan and baffle tray rack, mounted
The fan tray has 6 fans with a total minimum flow of 200 CFM. The fans are powered from the shelf directly above it.
If any fan fails, a status LED on the front panel turns red (Figure 5). The fan tray also has a Form C fan fail alarm relay
that can be connected to a local alarm-sending unit. (See Figure 22 on page 27.)
The following configuration is required to operate more than one and up to three shelves in the temperature range
specified in Section 3 on page 10, Product Specifications.
• A fan tray and baffle mounted directly below the shelves
• A rack space (1RU) for an air deflecting baffle mounted directly above the three shelves
4�4�2 Mounting 19" Equipment in a 23" Rack
To mount a 19" shelf in a 23" rack, install the included universal mounting brackets #5901456-002.
To mount a 19" fan or baffle tray in a 23" rack, order 2x 1RU universal mounting brackets #5901456-001.
4�4�3 Blanks
Blanks are available for unused slots. Order blanking plate kit (contains 2 blanks) #0380070-001.
4�4�4 Alarm Cable Kit
Terminal blocks for major and minor alarms use Molex connector 39-01-4031, this connector mates with Alpha
alarm minifit JR. receptacle 5566-03A3-210. Kit #8700649-001 is available from Alpha with 1 connector.
Air bafe

0120028-J0 Rev F
16
5� Site Evaluation and Pre-Installation
5�1 Installation Locators
Equipment is suitable for installation in one or more of the following locations:
• Network Telecommunication Facilities
• Locations where the NEC applies
• OSP
5�2 Pre-Installation Requirements
5� 2 �1 Primary Protection
The eLimiter+ has built-in second level surge protection in compliance with the GR-1089 requirement. Primary pro-
tection must be in place at the customer site.
5�3 Packing Materials
All Alpha products are shipped in rugged boxes and suspended via solid inserts to minimize shock that may oc-
cur during transportation. Packaging assemblies and methods are tested to International Safe Transit Association
standards.
5�3�1 Returns for Service
Save the original shipping container. If the product needs to be returned for service, it should be packaged in its
original shipping container. If the original container is unavailable, make sure that the product is packed with at least
three inches of shock-absorbing material to prevent shipping damage.
Alpha Technologies is not responsible for damage caused by improper packaging of returned products.
5�4 Check for Damage
Before unpacking the product, note any damage to the shipping container. Unpack the product and inspect the
exterior for damage. If any damage is observed, contact the carrier immediately.
Continue the inspection for any internal damage. In the unlikely event of internal damage, inform the carrier and con-
tact Alpha Technologies for advice on the impact of any damage.
5�5 General Receipt of Shipment
The inventory included with your shipment depends on the options you have ordered. The options are clearly
marked on the shipping container labels and bill of materials.
Call Alpha Technologies if you have any questions before you proceed: 1 888 462-7487.

17
0120028-J0 Rev F
6� System Installation
This chapter is provided for qualified personnel to install the system and provides cabling details and notes on cable
sizing for DC applications.
6�1 General Instructions
Connections to the converter system must comply with all the local codes and ordinances.
6�2 Safety Precautions
WARNING!
The DC input to the modules (and the converter system) – though not dangerous in volt-
age – has a high short circuit current capacity that may cause severe burns and electri-
cal arcing.
Before working with any live power system, take the following precautions:
• Remove all metallic jewelry; e.g., watches, rings, metal rimmed glasses, necklaces.
• Wear safety glasses with side shields (and prescription lenses if necessary) at all times during installation.
• Use insulated metallic tools.
The installer should follow all applicable local rules and regulations for electrical and battery installations; e.g., CSA,
UL, CEC, NEC, OSHA, and local fire codes.
6�3 Tools Required
Various insulated tools are essential for product installation. Use the following as a guide:
• Phillips head screwdriver, #2 (tip size 3/16")
• Slot head screwdriver (blade size 1/8")
• Digital voltmeter equipped with test leads
• Cutters, crimpers, and wire strippers 0.25 to 10mm2(#24 to #6 AWG)
6�4 Setting the Shelf ID
6�4�1 Rack Mounting
NOTE:
Use thread forming screws with paint piercing washers to connect the shelves and fan
assembly to the frame.
Use universal mounting brackets to mount the eLimiter+ shelf in a 19" or 23" rack. For bracket part numbers see
section "4.4.2 Mounting 19" Equipment in a 23" Rack" on page 15.
When the eLimiter+ shelf is installed in open-style rack, the use of base extenders is required to comply with
GR-63 Section 3.4 requirement. Base extenders are commercially available to protect equipment that protrudes
beyond the standard rack base.
For Alpha-supplied racks, the recommended base extension part is #5901537-001 which can be ordered sepa-
rately.
Set the rotary dial to a unique shelf
ID before mounting. Do not use 0.

0120028-J0 Rev F
18
Bafe tray
Bafe tray
Fan tray
Converter
shelves
Figure 6 — Multi-shelf system mounting
NOTE:
When the eLimiter+ system is operating normally at maximum rated load, the shelf
level rate of heat dissipation exceeds the allowable limit of 27.9 W/sq.ft. per Section
4.1.6 of GR-63-CORE (Issue 6).
Alpha recommends leaving a minimum of 5.0 (7.2) inches vacant vertical rack space
for each 23" (19") shelf installation to meet the required shelf-level rate of heat dissipa-
tion. To comply with this limit, additional empty vertical frame space must be added as
shown in Table B below. In addition, special equipment room cooling may be required.
Table B — Vertical Frame Spacing Requirements (NEBS GR-63-Core)
Installation Type Additional Empty Vertical Frame
Space needed for Compliance
(in feet)
Maximum Number of EUT Chassis
ableto be installed in 7 ft frame and
maintain compliance
19-inch frame 2.41 1
23-inch frame 1.83 2
6�4�2 Thermal Management with Fan Tray
If operating more than 1 continuous shelf a fan tray is required. One fan tray can be used for up to three shelves.
Three contiguous shelves require a fan tray and two baffles to meet the specified cooling requirements. Install the
fan tray directly below the three converter shelves and a baffle tray below the fan tray. In addition, install a baffle tray
above the converter shelves. Up to nine converter shelves can be installed in a rack, provided each three contiguous
shelves has fan cooling.