Alpha Technologies CSM46 User manual

Your Power Solutions Partner
CSM46 Modular Converter System
Installation & Operation Manual
Part # 012-554-B2
Effective: 07/2020

CSM46
Modular Converter System
Part # 012-554-B2
The following documents and drawings are included in this manual to provide the necessary
information required for installation, routine operation and fault diagnosis of the unit:
•Specifications: 012-554-B1
•Outline Drawing, 10-Module: 030-831-06
•Customer Connections, 10-Module: 030-831-08
•Assembly, I/P Cable, 10-Module: 877-591-04
•Assembly, O/P Cable, 2 feet: 877-593-04
•Assembly, Alarm Cable, 2 feet: 877-594-04
•Assembly, O/P, Molex to Anderson, 6 feet: 877-621-04
•Assembly, Alarm, Molex to Unterminated, 6 feet: 877-622-04

9400010-J1 Rev A
Important Safety Instructions
SAVE THESEINSTRUCTIONS: This manual contains important safety instructions that must
be followed during the installation, servicing, and maintenance ofthe product. Keep it in a safe place. Reviewthe
drawings and illustrations contained in thismanual before proceeding. If there are any questions re g ar d ing the safe
installation or operation of this product, contact Alpha and Outback Energy GmbH or the nearest AOE representa tive.
Save this document for future referen c e.
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, useextra care and attention.
The use ofATTENTION indicates specific regulatory/code requirements that may affect the
placement of equipment and /or installation procedures.
NOTE:
A NOTE provides additional information to help complete a specific task or
procedure.
CAUTION!
CAUTION indicates safety information intended to PREVENT DAMAGE to material or
equipment. Cautions are designated with a shock hazard icon, 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.
General Safety
WARNING!
This system is designed to be installed in a restricted access location that is
inaccessible to the general public.
Mechanical Safety
•Keep hands and tools clear of fans. Fans are thermostatically controlled and switch on automatically.
•Power supplies can reach extreme temperatures under
load.
•Use caution around sheet metal components and sharp
edges.

9400010-J1 Rev A
Electrical Safety
WARNING!
Hazardous voltages are present at the input of power systems. The DC output from
rectifiers and batteries, though not dangerous in voltage, has a high short-circuit
current capacity that may cause severe burns and electrical arcing.
Before working with any live battery or power system, follow these precautions:
•Remove all metallic jewelry, such as watches, rings, metal rimmed glasses, or ne
c kla c es
•Wear safety glasses with side shields at all times during the installation.
•Use OSHA approved insulated hand tools.
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
installation or removal procedure.
•Do not work alone under hazardous conditions.
•A licensed electrician is required to install permanently wired equipment. Input voltages can range up to
•240 Vac. Ensurethat the utility power is disconnected and locked out before performing any installation or
removal
pr ocedur e.
•Ensurethat 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.
Battery Safety
•Servicing and connection of batteries must be performed by, or under the direct supervision of, personnel
knowledgeable of batteries and the required safety pr ecautions.
•Always wear eye protection, rubber gloves, and a protective vest when working near batteries. Remove all
metallic objects from your hands and
neck.
•Use OSHA approved insulated hand tools. Do not rest tools on top of
batteries.
•Batteries contain or emit chemicals known to cause cancer and birth defects or other reproductive harm.
•Battery post terminals and related accessories contain lead and lead compounds. Wash your hands after
handling
batteries.
WARNING!
Follow battery manufacturer’s safety recommendations when working around battery
systems. Do not smoke or introduce an open flame when batteries (especially vented
batteries) are charging. When charging, batteries vent hydrogen gas, which can
explode.
•Batteries are hazardous to the environment and should be disposed at a recycling facility. Consult the bat tery
manufacturer for recommended local authorized r
ecyclers.

ii
TABLE OF CONTENTS
1INTRODUCTION ............................................................................................................................................................. 1
1.1 Scope of the Manual.........................................................................................................................................1
1.2 Product Overview ............................................................................................................................................. 1
1.3 Part Numbers and List Options.........................................................................................................................2
1.4 Accessories.......................................................................................................................................................2
2CONVERTER MODULE FEATURES .................................................................................................................................. 3
2.1 Microcontroller .................................................................................................................................................. 3
2.2 Indicators ..........................................................................................................................................................3
2.3 Fail Alarm..........................................................................................................................................................3
2.4 Alarm Masking Switch ...................................................................................................................................... 4
2.5 Test Points........................................................................................................................................................4
2.6 Output Power.................................................................................................................................................... 4
2.7 Over Voltage Protection (OVP) ........................................................................................................................4
2.8 Current Limit ..................................................................................................................................................... 4
2.9 Input Low Voltage Lockout ...............................................................................................................................5
2.10 Regulation and Paralleling..............................................................................................................................5
2.11 Over Temperature Protection.........................................................................................................................5
2.12 Ventilation.......................................................................................................................................................5
2.13 Paralleling Diode............................................................................................................................................. 5
2.14 Reverse Polarity Protection............................................................................................................................ 5
3CONVERTER SHELF FEATURES ..................................................................................................................................... 6
3.1 Module Locking Bar.......................................................................................................................................... 6
3.2 Site (Chassis) Ground ...................................................................................................................................... 6
3.3 DC Input............................................................................................................................................................ 6
3.4 DC Output.........................................................................................................................................................7
3.5 Alarm Cable/Relays.......................................................................................................................................... 7
4INSPECTION.................................................................................................................................................................. 8
4.1 Packing Materials ............................................................................................................................................. 8
4.2 Check for Damage............................................................................................................................................8
5INSTALLATION .............................................................................................................................................................. 9
5.1 Safety Precautions............................................................................................................................................ 9
5.2 Tools Required ................................................................................................................................................. 9
5.3 Shelf Preparation/Mounting............................................................................................................................10
5.4 Module Insertion/Removal..............................................................................................................................10
6WIRING AND CONNECTIONS ........................................................................................................................................ 11
6.1 Safety Precautions..........................................................................................................................................11
6.2 Site (Chassis) Ground .................................................................................................................................... 11
6.3 DC Input..........................................................................................................................................................11
6.4 DC Output.......................................................................................................................................................12
6.5 Alarm (Relay) Outputs ....................................................................................................................................12
7INITIAL STARTUP ........................................................................................................................................................ 13
7.1 Normal Mode of Operation .............................................................................................................................13
7.2 Reverse Polarity Protection............................................................................................................................13
8MAINTENANCE............................................................................................................................................................ 14

iii
8.1 Output Relay Replacement.............................................................................................................................14
9WARRANTY ................................................................................................................................................................ 15
9.1 Warranty .........................................................................................................................................................15
10 ACRONYMS AND DEFINITIONS .....................................................................................................................................16

012-554-B2 Rev DPage 1 of 16
1 Introduction
1.1 Scope of the Manual
This instruction manual explains the installation and interconnection of Alpha Technologies’ CSM46 converter
system. Both the converter modules and the shelves, which the modules are plugged into, are covered in this
manual.
NOTE: To aid the user with installation, frequent reference is made to drawings located at the rear of this manual.
1.2 Product Overview
The CSM46 down converter modules employ a high frequency switched mode conversion technique to provide a
bulk regulated –50 to –55Vdc output from multiple isolated ±190Vdc inputs. This is directly compatible with
Alpha’s CSM36 48Vdc to ±190Vdc up converters (reference manual #012-552-B2) for use in network powering
applications.
Network (a.k.a. Express, Simplex, Remote, Centralized) powering is a method of distributing energy over an
existing copper network. Multiple twisted-pair copper is used to distribute 100VA limited power sources at
±190Vdc. The individual, isolated inputs are terminated at a remote end and converted back to a bulk 48Vdc
supply.
Each CSM46 module plugs into a common shelf. The shelf (Figure 1 shown below) provides external connections
for inputs, output, and alarm interfaces and can accommodate up to ten modules. Additional converter modules
can be added to the shelf, at time of ordering or at a later time, after the converter system has been installed.
See Features Section of this manual for more information. See also the Specifications Section of this manual,
which details the electrical ratings for each module.
Figure 1–Perspective view of CSM46 10-module shelf

012-554-B2 Rev DPage 2 of 16
1.3 Part Numbers and List Options
This product is available to order under the following part numbers and list options:
Description Part Number/List Option
CSM46 converter, ±190Vdc to –48V .........................................................................................................012-554-20
Basic module......................................................................................................................................................*List 0
CSM46 10-module 1 RU 12” shelf.............................................................................................................030-831-20
Basic unit............................................................................................................................................................*List 0
Input wire harness 25-pair ±190Vdc ..................................................................................................................List 80
Output wire harness (Molex) 2 feet 48Vdc.........................................................................................................List 84
Output wire harness (Molex/Anderson) 6 feet 48Vdc........................................................................................List 85
Alarm output wire harness (Molex) 2 feet..........................................................................................................List 87
Alarm output wire harness (Molex/flying leads) 6 feet.......................................................................................List 88
Alarm relay replacement, Tyco 3-1393190-1 (T7CS5D-48)......................................................................491-403-19
CSM46 blank module................................................................................................................................615-278-D5
* Default option
The above information is valid at the time of publication. Consult factory for up-to-date ordering information.
Figure 2–Front and rear perspective views of the optional CSM46 blank module
1.4 Accessories
The following accessories can be ordered with this product:
Description Part Number
19" rack flush mount kit(see Figure 6) ...................................................................................................0370049-001
O/P wire harness, 8 feet,1/4" ring lug .....................................................................................................8700270-001

012-554-B2 Rev DPage 3 of 16
2 Converter Module Features
Each module contains two isolated DC to DC converters with a control and supervisory circuit. Each module
operates independently.
The Specifications Section of this manual details the electrical ratings for each module.
The converter modules plug into the converter shelf. The modules can be installed or removed from a system
without disturbing the system provided sufficient current capacity remains. This is often referred to as “Hot Swap.”
The total output current capacity of the converter system is equal to the sum of the individual current capacities of
the converter modules.
Figure 3–CSM46 converter module front panel
2.1 Microcontroller
The microcontroller monitors both the inputs and outputs of the converters, turns the converters on and off and
generates a converter fail alarm if required.
2.2 Indicators
LED indicators are provided on the front panel of the converter module to display the operational status of the
module.
2.2.1 IN
The power IN LED indicator illuminates when the converter module is getting power from the shelf (input voltage
is in the normal range) and is not shorted or otherwise in a fail condition.
2.2.2 OUT
The power OUT LED indicator illuminates when the converter module is not in a fail condition (see below); the
output voltage is in the normal range.
2.3 Fail Alarm
The converter module is equipped with a converter fail alarm, which is extended to the alarm relay contacts.
Converter fail alarm discrimination circuitry is factory set. The alarm is latched for approximately thirty seconds to
prevent strobing1of the alarm output. The alarm will be extended if the input or output voltages of the module falls
outside factory set limits, input fuses fail, the OVP shutdown operates, the over temperature shutdown operates,
or if the internal regulation fails. An output short circuit will also trigger this alarm. If the module returns to normal
regulation the alarm will clear.
1Generating multiple alarms for the same fault condition.
Converter IN (green, 2PL)
Alarm masking switch
+/-Test points (2PL)
Converter OUT (green, 2PL)

012-554-B2 Rev DPage 4 of 16
2.4 Alarm Masking Switch
This feature prevents (masks) Minor Alarm reporting for unused feeds. The alarm LEDs are not masked. The
switch in the UP position will mask alarming. The switch in the DOWN position will enable alarming for the
converter module.
2.5 Test Points
Each converter module has front access, insulated, current limited meter probe test points for each ±190Vdc input
feed. Use a voltmeter set to >20MΩinput resistance to allow for accurate (<2% error) input voltage measurement.
2.6 Output Power
Each of the two isolated converters on each CSM46 module has a maximum output capacity of 75W (for a total
capacity of 150W per module). The power output is a function of the input voltage into each converter. Proper
network engineering and copper pair sizing is a requirement for meeting the power demand of the load.
Input Voltage
Figure 4–Power per converter
2.7 Over Voltage Protection (OVP)
The OVP feature safeguards the module and load from converter over voltage conditions. If an over voltage
condition is detected on a converter output, the OVP will shutdown the corresponding output. The OVP shutdown
level is factory set. Once an over voltage condition is sensed, the microcontroller for that output will attempt to
restart repeatedly.
2.8 Current Limit
The current limiting function provides a primary response to output overload situations. When the converter output
is in current limit, its front panel OUT LEDs are off.
Output Power per Converter in Watts
(maximum module power is double)

012-554-B2 Rev DPage 5 of 16
2.9 Input Low Voltage Lockout
The converter module is electronically protected from low voltages at the inputs by fault detection circuitry. If the
input to the converter module falls below the lower DC input limit (see Specifications), the module will shut down
and enter converter fail mode.
2.10 Regulation and Paralleling
Alpha modular converters use “output slope” or “regulation offset” to accomplish load sharing.
2.11 Over Temperature Protection
The converter module is protected in the event that it is operated in excessive ambient temperatures or if the
cooling airflow is compromised such as that caused by airflow obstruction or operation at high altitudes. Under
these conditions the converter will shut down causing the corresponding OUT LED to flash. Normal outputs will be
returned automatically if the ambient temperature is reduced.
2.12 Ventilation
Cooling of the converter module is achieved via bottom to top natural convection and/or forced air-cooling. To
maintain proper operation over the full temperature range (see Specifications), allow at least one rack space
above and below the converter shelf with airflow baffles deflecting any heated air away from the input (bottom) of
the converter shelf. The 4-module shelf has an integrated fan.
2.13 Paralleling Diode
Converter modules are equipped with a paralleling diode to ensure uninterrupted operation of the system in case
of failure of one converter module.
2.14 Reverse Polarity Protection
The converter design has incorporated reverse polarity protection from the connection to a power source on the
input. This prevents damage to the converter circuitry if a reverse connection is made.
CAUTION
To ensure some measure of safety, it is recommended to wire the shelf with correct polarity on all
inputs as measured at the front panel test points.

012-554-B2 Rev DPage 6 of 16
3 Converter Shelf Features
The current shelf system for the CSM46 is a 12” 10-module design: Alpha #030-831-20.
This shelf configuration accommodates up to ten CSM46 DC-DC converter modules. A fully equipped system
provides for up to twenty ±190Vdc inputs and can output up to 1500 Watts bulk power for 48Vdc loads.
The shelf system provides front accessibility for operation and customer connections.
The system is a natural convection cooled unit and does require external airflow for operation in temperatures
above 40°C (104°F). The Specifications Section at front of this manual details the temperature operation
constraints.
Figure 5–Side view of CSM46 10-module shelf connections (typical)
(Photo is for reference only – subject to installation requirements)
NOTE: Refer also to drawings located at the rear of this manual.
3.1 Module Locking Bar
A locking bar is provided on the shelf to secure the converter modules in place during operation. The bar rotates
up to allow for module insertion/removal. The bar rotates down, locking into the handle of each module, to secure
the modules in place.
3.2 Site (Chassis) Ground
The left side mounting bracket (looking at front of unit) contains a set of PEM studs for site ground connection.
3.3 DC Input
The shelf comes factory configured with a 50-pin Amp-Champ style connector and 25-pair wire for input of the
twenty input power pairs (which require customer-supplied overvoltage protectors at the host system).
Alarm cable
Input cable
Output cable
Locking bar
Alarm relays

012-554-B2 Rev DPage 7 of 16
3.4 DC Output
3.4.1 Shelf Connection
The 10-module shelf has a 3-position Molex style connector for the –48V and +Gnd output terminations.
3.4.2 Wire Harness Options
The 10-module shelf has two options for DC output wiring:
Shelf List Option 84: provides a wire harness two feet long with a 3-position Molex connector on the customer
connection end.
Shelf List Option 85: provides a wire harness six feet long with a 2-position Anderson style connector on the
customer connection end.
3.5 Alarm Cable/Relays
The 10-module shelf system can extend both major and minor alarm outputs via Form C relays; which are
socketed and field replaceable (See 1.3 Part Numbers and List Options for ordering information).
3.5.1 Major Alarm
NOTE: Major alarm relay is designed to “fail safe” to ensure alarm is registered when power is removed.
The Major alarm relay will be de-energized under any one of the following conditions:
•When a converter module has failed,
•When two or more outputs have failed,
•When two of the input feeds are below the normal operating voltage,
•When two of the input feeds are above the normal operating voltage.
3.5.2 Minor Alarm
The Minor alarm relay will be energized under any one of the following conditions:
•When one half of a converter module has failed,
•When one of the input feeds are above or below the normal operating voltage,
•When the internal ambient temperature exceeds the specified limit.
3.5.3 Shelf Connection
The 10-module shelf has a Molex style connector for the major and minor alarm relay terminations.
3.5.4 Wire Harness Options
The 10-module shelf has two options for factory alarm wiring:
Shelf List Option 87: provides a wire harness two feet long with a 16-position Molex connector on the customer
connection end.
Shelf List Option 88: provides a wire harness six feet long with unterminated wires (flying leads) on the customer
connection end.

012-554-B2 Rev DPage 8 of 16
4 Inspection
4.1 Packing Materials
All Alpha products are shipped in rugged, double walled boxes and suspended via solid inserts to minimize shock
that may occur during transportation. Packaging assemblies and methods are tested to International Safe Transit
Association standards.
Products are also packaged with Cortex. This plastic wrap contains a corrosive-inhibitor that protects the product
from corrosion for up to two years.
4.1.1 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 the product is packed with at least
three inches of shock-absorbing material to prevent shipping damage.
NOTE: Alpha Technologies is not responsible for damage caused by the improper packaging of returned products.
4.2 Check for Damage
Prior to 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, please inform the
carrier and contact Alpha Technologies for advice on the impact of any damage.
Verify that you have all the necessary parts per your order for proper assembly.

012-554-B2 Rev DPage 9 of 16
5 Installation
This chapter is provided for qualified personnel to install the product, which shall be mounted in a clean and dry
environment.
NOTE: To aid the user with installation, frequent reference is made to drawings located at the rear of this manual.
5.1 Safety Precautions
WARNING
Hazardous voltages are present at the input of converter/rectifier systems. The DC output, from
the converters/rectifiers and the battery system, has a high short circuit current capacity that may
cause severe burns and electrical arcing.
WARNING
The intra-building ports (Ethernet, CAN, alarm relays) of the equipment or subassembly are
suitable for connection to intra-building or unexposed wiring or cabling only. The intra-building
port(s) of the equipment or subassembly MUST NOT be metallically connected to interfaces that
connect to the OSP or its wiring. These interfaces are designed for use as intra-building interfaces
only (Type 2 or Type 4 ports) and require isolation from the exposed OSP cabling. The addition of
Primary Protectors is not sufficient protection in order to connect these interfaces metallically to
OSP wiring.
Before working with any live battery or power system/distribution center, follow these 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 OSHA approved insulated hand 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.
CAUTION
The CSM46 is suitable for installation as part of the Common Bonding Network (CBN).
The CMS46 is suitable for connection to the (Central Office, NEC)
The CMS46 must be grounded via a copper ground conductor.
Before making connections all bare grounding connection points to the CMS46 must be cleaned
and coated with an anti-oxidant solution.
Before making connections all surfaces on the CMS46 that are un-plated must be brought to a
bright finish and treated with and anti-oxidant solution.
To ensure electrical continuity, all non-conductive surfaces on the LPS36 should be removed from
all threads and all connection points.
The CMS46 utilizes a 2-hole compression lug with a #6 AWG wire that utilizes 8.8 ft-lbs torque to
secure it to the frame and CMS46.
5.2 Tools Required
Various insulated tools are essential for product installation. Use this list as a guide:
•Philips head screwdriver, #2 (tip size 3/16")
•Slot head screwdriver (1/4" x #6)
•High impedance (>20MΩ) digital voltmeter equipped with test leads
•Cutters, crimping tool and wire strippers 0.34 to 10mm2 (#22 to #8 AWG).

012-554-B2 Rev DPage 10 of 16
5.3 Shelf Preparation/Mounting
See drawings 030-821-06 and 030-903-06.
NOTE: Mount the shelf in a clean and dry environment. Allow at least 1.75” of free space above and below the unit for
unrestricted cooling airflow. A customer-supplied DC fan tray can occupy part or all of the required space below
the shelf and it is recommended to allow a minimum of 2RU (3.5”) below a DC fan tray for removal and servicing
of the fans and/or fuses.
Mounting brackets accommodate either 1" or 1-3/4" rack spacing. The shelf should be mounted to the rack using
at least two #12 – 24 x 1/2" screws in each bracket. Philips-type screws and screwdriver should be used to
eliminate the possibility of slippage and scratching of the unit’s exterior. Use washers, which are designed to cut
through the painted surface (such as internal tooth), or special screws to ensure a good chassis ground.
To attach a 19" rack mount kit, see Figure 6.
Figure 6–19" rack flush mount kit
5.4 Module Insertion/Removal
To insert a module: lift locking bar, place the module on the shelf bottom, and slide the module into the rear
connector (inside of the shelf). Apply pressure on the module handle to engage the rear connector in the shelf
receptacle.
NOTE: It is recommended that the first module be inserted into the front rightmost position using the side of the shelf as a
guide. The next module may be inserted using the previous module as a guide. Do not force a module into
position if it does not seat properly. All modules are keyed to ensure that the correct module (polarity/voltage) type
is used.
To remove a module: lift locking bar, grasp module handle and pull out, sliding the module away from the rear
connector and out of the shelf.
NOTE: Replacing a rectifier with a new one requires a manual Inventory Update at the controller before installing the
new rectifier. This command (Main Menu > Rectifiers > Inventory Update) clears the removed rectifier from the
controller’s current list of rectifiers.

012-554-B2 Rev DPage 11 of 16
6 Wiring and Connections
6.1 Safety Precautions
WARNING
For safety reasons, ensure the shelf is properly bonded to the enclosure’s ground grid.
Input voltage shall meet UL60950-21 RFT-V requirements. DO NOT CONNECT TO RFT-C
CIRCUITS.
Chassis must be permanently grounded.
-48V return (RTN) shall be earthed.
Telecom cable carrying ±190V, shall be #26 AWG minimum (rated 200V minimum).
Primary over voltage protection must be provided on all input pairs.
Insulation of the outside plant conductors should be rated >90°C (194°F).
Insulation of the wiring inside the enclosed equipment cabinets should be rated 105°C (221°F)
minimum. Cables must be dressed to avoid damage to the conductors.
The designed capacitance between +190V and –190V RFT-V conductors is 7uF and the measured
capacitance between ±190V conductors and earth is <1uF.
Current limiting protection must be provided for the contacts of the alarm relays as they are not
fused in the shelf. EXCEEDING MAXIMUM RATINGS OF 60Vdc AND 0.5A COULD RESULT IN FIRE
OR DAMAGE OF THE CONTACTS.
For installations in environments exceeding 40°C (104°F), airflow must be provided at a rate of 150
LFM across the entire cross section of the shelf.
This equipment is to be used in controlled environments.
Load connections should be made in close proximity to the power shelf.
Refer to the previous (Installation) chapter for additional safety precautions.
6.2 Site (Chassis) Ground
The left side mounting bracket (looking at front of unit) contains a set of 1/4" PEM studs on 5/8” centers for site
ground connection. Refer to drawing 030-831-08, at the rear of this manual, for site/chassis ground location.
6.3 DC Input
The shelf comes factory configured with a 50-pin Amp-Champ style connector and 25-pair wire for input of the
twenty (20) input power pairs.
NOTE: The host system must provide input primary overvoltage protection, for each of the 20 telephone wire pairs, to a
level corresponding to a 5-pin solid-state protector type Corning 303M-11A7T0 or a 5-pin multi-stage protector
type Bourns 2410-31-G-MSP. These modules are designed to short-to-ground for all electrical conditions that
exceed their surge capabilities and have a DC breakdown voltage range of 300-400 Volts and an impulse
breakdown voltage of <700 Volts.
Refer to drawing 030-831-08, at the rear of this manual, for pin out assignments and mating connector
requirements.

012-554-B2 Rev DPage 12 of 16
6.4 DC Output
6.4.1 Shelf Connection
The 10-module shelf has a 3-position Molex style connector for the –48V and +Gnd output terminations. Refer to
drawing 030-831-08, at the rear of this manual, for pin out assignments and mating connector requirements.
6.4.2 Wire Harness Options
The 10-module shelf has two (2) options for DC output wiring:
Shelf List Option 84: provides a wire harness two (2) feet long with a 3-position Molex connector on the
customer connection end. Refer to drawing 877-593-04, at the rear of this manual, for pin out assignments.
Shelf List Option 85: provides a wire harness six (6) feet long with a 2-position Anderson style connector on the
customer connection end. Refer to drawing 877-621-04, at the rear of this manual, for pin out assignments.
6.5 Alarm (Relay) Outputs
The 10-module shelf system can extend both major and minor alarm outputs via Form C relays; which are
socketed and field replaceable (See 1.3 Part Numbers and List Options for ordering information).
Each relay output can be wired for NO or NC operation during an alarm or control condition. See Figure 7.
Figure 7–Showing relay connections
6.5.1 Shelf Connection
The 10-module shelf has a 6-pin Molex style connector for the major and minor alarm relay terminations. Refer to
drawing 030-831-08, at the rear of this manual, for pin out assignments and mating connector requirements.
6.5.2 Wire Harness Options
The 10-module shelf has two (2) options for factory alarm wiring:
Shelf List Option 87: provides a wire harness two (2) feet long with a 16-position Molex connector on the
customer connection end. Refer to drawing 877-594-04, at the rear of this manual, for pin out assignments.
Shelf List Option 88: provides a wire harness six (6) feet long with unterminated wires (flying leads) on the
customer connection end. Refer to drawing 877-622-04, at the rear of this manual, for pin out assignments.