RFL 9506 Bedienungs- und Wartungsanleitung

POWER-LINE CARRIER SYSTEMS

TYPE RFL 9506

GENERAL DESCRIPTION

Rev. 8’ October 2001

TABLE OF CONTENTS

Page

INTRODUCTION 1

1CONSTITUTION OF THE SYSTEM 2

1.1 TYPES OF TERMINALS 2

1.2 OPTIONAL SERVICES 3

2PARTICULARITIES OF THE SYSTEM 4

2.1 MODULATIONS AND DEMODULATIONS 4

2.2 USE OF THE BASE BAND 10

2.3 USE OF THE PILOT CHANNEL 10

3PROGRAMMING, CONFIGURATION AND SUPERVISION OF THE SYSTEM 13

3.1 CONFIGURATION AND PROGRAMMING MENU 15

3.2 SUPERVISION MENU 16

3.3 COMMISSIONING HELP MENU 18

4CONSTITUTION OF THE TERMINAL 19

4.1 MODULES FOR THE BASIC EQUIPMENT 19

4.2 MODULES FOR OTHER VERSIONS 22

4.3 OPTIONAL MODULES AND SUBMODULES 23

4.4 BUILT-IN EQUIPMENT 25

5TECHNICAL CHARACTERISTICS 26

5.1 GENERAL CHARACTERISTICS 26

5.2 HIGH-FREQUENCY CHARACTERISTICS 28

5.3 AUDIO-FREQUENCY CHARACTERISTICS 29

5.4 OPERATING CONDITIONS 32

5.5 MECHANICAL CHARACTERISTICS 33

5.6 CHARACTERISTICS OF THE PROGRAMMING TERMINAL 34

6CONSTRUCTIVE CHARACTERISTICS 35

INTRODUCTION

The RFL 9506 Power-Line Carrier (PLC) system allows one or two standard 4kHz

channels to be transmitted over high-voltage lines. The effectively transmitted frequency

band of these channels is situated between 300 Hz and 3850 Hz.

RFL 9506 terminals constitute an extremely versatile system, in which the most important

parameters such as transmission frequencies, input and output levels, modulation

percentages and so on can be fully programmed from a compatible PC or from a dedicated

console.

The equipment features a supervision system that gives access to any of the terminals of a

link comprising RFL 9506 equipment, from a PC connected to any of these terminals via

an RS-232C interface, in order to collect information regarding the noise level, the received

pilot level, the chronological list of alarms and so on.

Supervision as well as programming from a distance can be carried out by means of the

internal 50 Bd channel used to transmit the call and carry out the Automatic Gain Control

(AGC) of the receiver.

The technology used in the design of the RFL 9506 is based on microprocessors, on digital

signal processing, and on high-performance filtering by means of active components and

switched-capacity devices. Thanks to the use of the most advanced devices in the process

of signal synthesis, the definition of the transmission and reception frequencies can be

carried out in 1 Hz steps.

The modular construction of the equipment permits its configuration and its characteristics

to be easily adapted to the particular requirements of communication networks.

RFL 9506 terminals comply with the International Recommendation IEC 495, regarding

PLC equipment.

1CONSTITUTION OF THE SYSTEM

The RFL 9506 system comprises terminals that offer a wide range of possibilities for PLC

transmission. The terminals can be equipped with a series of options that allow the

equipment to be adapted for the transmission of information required by electricity

companies, as well as for communicating over a power network.

1.1 TYPES OF TERMINALS

The RFL 9506 system features terminals of one or two standard 4 kHz channels and can

have an output power of 5W, 20 W, 40 W or 80 W (PEP), measured at the

coaxial-connector output. This power can be increased, depending on the channel

frequency, up to a value between 150% and 280% for a period of no more than 500 ms in

order to transmit a teleprotection command (overboosting).

Each channel can be used for speech-plus transmission or exclusively for data

transmission. The effectively transmitted frequency band of the channel, which is to say

the available band, extends between 300 Hz and 3850 Hz.

Four models of RFL 9506 terminals are available, each with a different output power.

These models are: RFL 9506-05, RFL 9506-20, RFL 9506-40 and RFL 9506-80 the output

power of which is 5 W, 20 W, 40 W and 80 W respectively.

The simplest version of each model consists of a single-channel terminal in which the

available band is used for data transmission (D-type channel). In the case of the 40 W

model, for example, the simplest version is the RFL 9506-40D terminal.

Version D constitutes the basic equipment for each model and can be transformed into any

of the other versions of the same model by the simple addition of the corresponding

modules in each case.

The speech-plus terminal (version T) is obtained by including a speech module in the basic

equipment. If on the other hand the two modules necessary for a second channel are

added, the twin-channel terminal is obtained, which permits two data channels to be

established (version DD). The terminals with a speech-plus channel and a data channel

(version TD) and with two speech-plus channels (version TT) are respectively obtained by

adding one or two speech modules to the DD version.

The different models and their corresponding versions are indicated in Table 1.

SINGLE CHANNEL TWIN CHANNEL

DTDD TD TT

5W RFL 9506-05D RFL 9506-05T RFL 9506-05DD RFL 9506-05TD RFL 9506-05TT

20 W RFL 9506-20D RFL 9506-20T RFL 9506-20DD RFL 9506-20TD RFL 9506-20TT

40 W RFL 9506-40D RFL 9506-40T RFL 9506-40DD RFL 9506-40TD RFL 9506-40TT

80 W RFL 9506-80D RFL 9506-80T RFL 9506-80DD RFL 9506-80TD RFL 9506-80TT

DData transmission channel

TSpeech-plus transmission channel

Table 1Designation of the different RFL 9506 terminals

1.2 OPTIONAL SERVICES

RFL 9506 terminals have two types of optional modules; one type permits the facilities of

the terminal to be extended while the other type allows other equipment to be incorporated

in the same terminal.

The number of options that can be included in each terminal depends on the quantity and

type of channels that it has. The number of options can be chosen from among six in a

D-type single-channel terminal and two in a TT-type twin-channel terminal.

The different options for the speech module are the following:

−4-wire or 2-wire exchange-side telephone termination.

−2-wire subscriber-side telephone termination.

−Party-line termination.

The optional modules that allow the facilities of the terminal to be extended are the

following:

−Fixed-band VFT-transit filter.

−Programmable amplitude and/or phase equalizer.

−Data input/output module.

The following is the optional equipment that can be incorporated in RFL 9506 terminals:

−Teleprotection terminal. Based on digital signal-processing, this terminal comprises

a teleprotection system. Its application is possible in teleprotection systems in which

use is made of blocking as well as direct or permissive tripping.

2PARTICULARITIES OF THE SYSTEM

2.1 MODULATIONS AND DEMODULATIONS

On the transmit side, the RFL 9506 terminal carries out the transposition of each 4kHz

channel to a band of frequencies that extends from 40 kHz to 508 kHz. This transposition

is achieved by means of a triple frequency conversion. The base band can be situated at

any point within the carrier-frequency range with a resolution of 1Hz, which not only

permits the equipment to be adapted to any channelling of frequencies but also solves

special interference problems by means of the adequate displacement of the band.

The type of modulation used is single side-band with suppressed carrier. This makes

possible the best use of transmit power given that it is all used for user information.

Figure 1shows the transmission modulation plan for a twin-channel system. In the

single-channel system the modulation process is the same as that of channel 1 and is

represented in Figure 2. The following information describes the frequency-conversion

process carried out in transmission for a twin-channel system, to which is analogous the

process for a single-channel system.

The two first modulations are made at fixed frequencies and the third at a frequency

generated digitally in 1 Hz steps. The first is achieved at a frequency of 12 kHz for channel

1 and at 16 kHz for channel 2. A 12 kHz to 16 kHz band-pass filter in channel 1 and

another of 16 kHz to 20 kHz in channel 2 select the higher band. The pilot signal, centred

at 12150 Hz for channel 1 and at 16150 Hz for channel 2, is added to each channel. The

signals are subsequently mixed to obtain the first modulation intermediate frequency (IF)

band that extends from 12 kHz to 20 kHz. The second modulation is accomplished at

768 kHz or 800 kHz, according to whether the band to be transmitted is inverted or erect,

and in both cases, after filtering, a band of 780 kHz to 788 kHz is obtained. Finally the third

modulation, which transposes the band to the desired frequency of between 40 kHz and

508 kHz, is carried out at a programmable frequency, f

0, of between 828 kHz and

1288 kHz. This frequency is generated by the direct digital-synthesis (DDS) technique by

means of a numerically-controlled oscillator (NCO). The band of undesirable frequencies is

eliminated by a low-pass filter with a 508 kHz cutoff frequency.

Figure 1Transmission modulation plan for a twin-channel system

Figure 2Transmission modulation plan for a single-channel system

The inverse transposition is carried out in reception and the channels occupy a basic

bandwidth of 4kHz or 8kHz according to whether the system is single or twin channel.

Figure 3shows the reception modulation plan for a twin-channel system. The following

information describes the frequency-conversion process carried out in reception for a

twin-channel system.

The first demodulation is carried out at a frequency generated digitally by the same

process as that indicated in transmission and the second and third demodulations are

achieved at fixed frequencies.

The high-frequency signal that enters the equipment is demodulated by means of a

selected frequency of between 700 kHz and 1160 kHz to obtain, after 652 kHz to 660 kHz

band-pass filtering, the first-demodulation frequency band. The second demodulation is

carried out at a frequency of 672 kHz or 640 kHz according to whether the high-frequency

band is inverted or not. Immediately after, the second-demodulation frequency band is

obtained, with a 16 kHz to 20 kHz band-pass filter for channel 1 and a 12 kHz to 16 kHz

band-pass filter for channel 2. The third demodulation is carried out at a different fixed

frequency in each channel, this being at 20 kHz for channel 1 and at 16 kHz for channel 2,

and, after filtering in the 4 kHz band, the signal is recovered in the base band.

The pilot tone for each channel is obtained from the band of second-demodulation

frequencies, where it is centred at 19850 Hz for channel 1 and at 15850 Hz for channel 2.

After crossing the AGC circuit, this band is demodulated by means of a 24 kHz carrier

frequency for channel 1 and a 20 kHz carrier frequency for channel 2. In both cases, and

by means of a narrow-band filter centred at 4150 Hz, the pilot signal is extracted for later

use.

In the single-channel system there are two different modulation plans in reception,

Figure 4a) and b), depending on the relative positions of the transmission band and the

reception band.

In the case of Figure 4a) the demodulation process is the same as that of channel 1 of a

twin-channel system.

In the case of Figure 4b) the second demodulation is carried out at a frequency of

676 kHz or 636 kHz, instead of 672 kHz or 640 kHz, according to whether the

high-frequency band is inverted or not. From this point on the process is analogous to

that represented in Figure 4a).

The purpose of these two modulation plans in reception for a single-channel system is to

leave the transmission band out of the pass band of the intermediate-frequency filter.

Figure 3Reception modulation plan for a twin-channel system

Inhaltsverzeichnis

Andere RFL Touch-Terminal Handbücher

RFL

RFL 9785 Bedienungsanleitung

Beliebte Touch-Terminal Handbücher anderer Marken

Wincor Nixdorf

Wincor Nixdorf iPOS plus Advanced Bedienungsanleitung

Ingenico

Ingenico AXIUM EX4000 Bedienungsanleitung

Heisei Electronics

Heisei Electronics Q-POS 815 Bedienungsanleitung

Amano

Amano MTX-15 Bedienungsanleitung

FLOWBIRD

FLOWBIRD CWT Compact Touch Bedienungsanleitung

Demco

Demco SP7 Bedienungsanleitung

Lathem

Lathem PC600 Series Bedienungsanleitung

Partner

Partner MF-2352 Bedienungsanleitung

NCR

NCR RealPOS 7460-2 Handbuch

Simrad

Simrad MS50 Montageanleitung

Unitech

Unitech MR350 MKII Kurzanleitung

Jungheinrich

Jungheinrich WMT 210 Bedienungsanleitung

Motorola

Motorola MTP850 Bedienungsanleitung

YASKAWA

YASKAWA 62H-MDC0 Bedienungsanleitung

MVG industries

MVG industries NeptuLink Bedienungsanleitung

Price Industries Limited

Price Industries Limited FDC Gebrauchsanweisung

Honeywell

Honeywell TemaKey Bedienungsanleitung

EBN

EBN BPC65-B-A16G Bedienungsanleitung