Tài liệu Fiber Loop Converter (FLC) Powering doc

Housing The ADC Quad Fiber Loop Converter QFLC and DS3 Fiber Loop Converter DS3 FLC modules can be housed in either the eight position chassis or the four position wall mount chassis.. O

Application Note 1212

®

Telecommunications

This application note addresses the various powering options for the Quad Fiber Loop Converter (QFLC) and DS3 Fiber Loop Converter (DS3 FLC)

Housing

The ADC Quad Fiber Loop Converter (QFLC) and DS3 Fiber Loop Converter (DS3 FLC) modules can be housed in either the eight position chassis or the four position wall mount chassis Each module also fits into a specially designed two position horizontal chassis All these chassis use a different powering arrangement

Module Current Specifications

Both the QFLC and the DS3 FLC require -48 Vdc power Specific current requirements depend on the application The typical current draw for a QFLC is 250 mA If the QFLC provides four lines of simplex current, the typical supply current increases to 490 mA The DS3 FLC, which does not provide simplex current, typically draws 200 mA, with a maximum current draw of 250 mA Table 1 provides a summary of current requirements for the two modules

Overview

Table 1: FLC Module Current Specifications

Module

QFLC

DS3 FLC

Application

Online, no simplex current provided Standby, no simplex current provided Online, simplex current provided Standby, simplex current provided Online

Standby

Typical Current per Module

250 mA

170 mA

490 mA

170 mA

200 mA

200 mA

Maximum Current per Module

336 mA

256 mA

600 mA

256 mA

250 mA

250 mA

Fiber Loop Converter (FLC) Powering

Application Note 1212

Powering Options

Following are suggested powering methods for the three QFLC/DS3 FLC chassis

8 Position Chassis

ADC provides the eight position chassis without a separate power supply Generally, the eight position chassis is wired directly to the central office -48 Vdc power supply If the application requires an AC/DC converter, ADC offers MZ12CAB, an AC/DC rectifier cabinet, and MZ2A50, a 2 amp AC/DC rectifier module The rectifier cabinet holds up to five rectifier modules, for a total of 10 amps of supply current Each FLC application will require a different number of AC/DC rectifier modules depending on the current draw of that application

4 Position Chassis

ADC provides the four position wall mount chassis with two different powering options

FWM-xxA04A* is the four position chassis with dual/redundant AC/DC converters

housed within the chassis This option allows the chassis to convert 110 VAC current to the required -48 Vdc Redundancy ensures continued service should one of the power supplies fail

If the application calls for battery backup with the four position wall mount chassis, ADC

recommends FWM-xxDO4B,* a four position chassis with a separate wall-mount Lorain/

Reliance Comm/Tec five amp AC/DC converter and battery backup system The five amp AC/DC rectifier and battery backup system converts 110 VAC to -48 Vdc and provides 12.7 amp-hours of backup, which guarantees 8 hours of continuous service in the event

of a power failure ADC does offer the Lorain/Reliance Comm/Tec battery backup and rectifier system separately as FLC-AC/BB2

If the application uses a four position wall mount chassis and a -48 Vdc power supply is

locally available, ADC supplies FWM-xxX04A,* a four position chassis without a separate

power source

2 Position Chassis

ADC originally designed FRM-FAW02x,** a two position horizontal rack mount chassis,

for DLC applications where a -48 Vdc power supply is typically available For two position applications requiring an AC/DC converter, ADC recommends FLC-HDW009, a

3 amp, wall-mountable AC/DC power supply FLC-HDW010 is used to install this power supply in either a 19" or 23" rack (See ADCP-61-162 for additional technical

specifications.)

Fiber Loop Converter (FLC) Powering

Overview

*When ordering, "x" is

replaced with ww for

wire-wrap IN/OUT

connections or RJ for

RJ48 jack modular IN/

OUT connections.

**When ordering, "x" is

replaced by B for a QFLC

23" chassis, C for a DS3

FLC 23" chassis or D for

a QFLC 19" chassis.

ADC does not offer a 19"

DS3 FLC chassis.

Application Note 1212 Fiber Loop Converter (FLC) Powering

Table 2 summarizes the suggested powering methods for the different chassis

Description

Empty eight position chassis Empty eight position chassis Rectifier cabinet

2 amp AC/DC rectifer module Empty four position chassis Four position chassis with dual/redundant AC/DC converters Four position chassis with Lorain/Reliance Comm/Tec rectifier and battery backup Empty two position horizontal chassis Empty two position horizontal chassis Pylon 3 amp AC/DC converter

Chassis

Eight Position

Four Position

Two Position

Required Catalog Number

FRM-xxW08A*

FRM-xxW08A*

MZ12CAB MZ2A50 FWM-xxX04A**

FWM-xxA04A**

FWM-xxD04B**

FRM-FAW02x***

FRM-FAW02x***

FLC-HDW009***

Application

-48 Vdc power locally available AC/DC converter required

-48 Vdc power locally available AC/DC converter required AC/DC converter and battery backup required

-48 Vdc power locally available AC/DC converter required

Table 2: FLC Chassis Suggested Powering Methods

*When ordering, "xx" is replaced by FA for a front access chassis or RA for a rear access chassis.

** When ordering, "xx" is replaced with WW for wire-wrap IN/OUT connections or RJ for RJ48 jack modular IN/OUT connections.

*** When ordering, "x" is replaced by B for a QFLC 23 inch chassis, C for a DS3 FLC 23 inch chassis, or D for a QFLC 19 inch chassis ADC does not offer a 19 inch DS3 FLC chassis.

Note: ADC recommends fusing all systems at 150% of the maximum current draw.

Application Note 1212 2/95 Original © 1994, 1995 ADC Telecommunications, Inc All Rights Reserved An Equal Opportunity Employer

Specifications published here are current as of the date of publication of this document Because we are continuously improving our products, ADC reserves the right to change specifications without prior notice At any time, you may verify product specifications by contacting our headquarters office in Minneapolis.

ADC Telecommunications, Inc.

4900 West 78th Street

Minneapolis, Minnesota 55435

FAX: (612) 946-3292

For U.S Sales, Call Toll Free: 1-800-366-3891

®

Telecommunications

International Sales Offices: Belgium 32-2-721-5282 • United Kingdom

44-734-441955 • Montreal, Quebec (514) 677-9166 • Vancouver, BC

(604) 270-1675 • Toronto, Ont (905) 629-3104 • Ottawa, Ont (613)

723-2171 • Singapore 65-225-8228 • Venezuela 58-2-953-1684 •

Mexico City, Mexico 525-658-4519 • Sydney, Australia 61-2-975-1499