IndustrialIT for Utility Communications
Communicate IT Power Line Carrier ETL500
Features
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Software programmable Power Line Carrier
(PLC) unit for the transmission of speech,
data and protection signals
Latest signal processor technology permits
tailor-made solutions for each specific
application, with optimal operating behaviour, even under the most adverse line
conditions
Optional fitting with digital multiplexer
AMX500 for operation with data rates up
to 64 kbps
Adaptive adjustment of the data rate according to the prevailing line characteristics
Integrated, software programmable protection signalling equipment NSD550 for
maximum performance
Integrated NSK5 data modem for lowspeed data channels for SCADA applications
Three transmission power classes (5 watt, 40 watt,
80 watt) available, utilizable according to line
conditions
Programmable over the carrier frequency range
24 to 500 kHz
Operation with 1 or 2 transmission channels
Direct Digital frequency Synthesis (DDS) provides
maximum stability of the frequency conversion
Standard interfaces for speech transmission and
telecontrol applications
Modular compact design for minimum hardware
expenditure and maximum reliability
Windows based Man-Machine Interface MMI500
Embedded Operations Channel (EOC) for
remote monitoring and remote configuration of
the equipment
Remote access via Internet and dial-up modem
Meets or exceeds IEC 60495 and IEC 60834-1
requirements
Complies with safety and electromagnetic
capability (EMC) requirements of the European
Community (EC)
Applications
The fully digital ETL500 Power Line Carrier set is a
multipurpose equipment designed for the transmission of speech, data and protection signals over
power lines or cables. The equipment can be used
on power lines of any voltage level or length.
Moreover, with the considerably enhanced transmission capacity provided by the digital add-on facility
AMX500, several new applications can be identified.
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The frequency congestion problem is considerably
relieved, as several times more information can be
packed into the same carrier frequency band,
therefore fewer RF carrier channels are needed.
With 64 kbps transmission rate, a cost-efficient
interconnection between digital wideband networks can be established.
High-capacity PLC link is also best suited to serve
as a back-up path for vital information conveyed
through fibre-optic or microwave links.
ETL 500 Power Line Carrier equipment is suitable for a wide range of applications
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LT
C
C
ETL500
ETL500
M
M
DC
M
PR
PC
MS
PAX
FAX
PR
C
DC
FAX
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M
Solution to frequency congestion
Because of the limitation of the available
PLC frequency spectrum, the extension
of existing networks often becomes very
difficult. An ETL500 equipped with the
AMX500 may replace 2 to 4 existing analogue PLC links and therefore provides a
solution to bottlenecks in the existing
PLC network. For a given number of
services, the number of PLC channels
needed can be reduced significantly and
therefore frequency allocation becomes
easier. The example beside illustrates how
the frequency allocation scheme can be
PC
= Coupling Device
= Dispatcher's Console
= Facsimile equipment
= Line trap
= Modem
RTU
MS
PAX
PR
PC
RTU
FAX
= Master Station
= Privat Automatic Exchange
= Protection Relay
= Personal Computer
= Remote Terminal Unit
Station
A
Tx
B
Rx
Analog PLC
C
Digital PLC
D
replaced
E
Transmission lines
4 kHz steps
Digital PLC relieves the problem of frequency congestion
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made less dense if analogue carrier sets are replaced
by their digital counterparts. This provides frequency
space for the new carrier channels to be allocated.
Back-up of wideband communication links
With the standard serial data interface according to
ITU-T X.21 provided by the AMX500, the system is
prepared for being connected to a PDH (Plesiochronous Digital Hierarchy) multiplexer. This opens up a
variety of options for accessing to a digital wideband
network.
At the outskirts of a power system communications
network there is usually low-density traffic which
does not justify the investment for a high-capacity
fibre installation. With digital PLC equipment, a lowcost tributary link to the wideband backbone system
may be installed as an alternative.
Customer benefits
Robust design
The ETL500 concept is based on ABB’s long experience in the field of power line carrier equipment.
The electrical and the mechanical design make use of
the most advanced technologies. Design principles
proven in the area of power system communication
enable the ETL500 equipment to withstand harsh
environmental conditions.
Whilst using latest processor technology, the number
of modules could be greatly reduced. The shrinking
of the hardware to a bare minimum ensures maximum reliability. Furthermore, the reduced number
of different spare parts results in considerable cost
savings.
The ETL505 with 5 watt power output
consists of one 19” subrack, 6 units high,
comprising the complete set of functional
modules. Application of this type of
equipment is adequate for medium voltage
power lines of short to moderate distance.
For the ETL540 / ETL580 versions, one respectively two more subracks of 3 units
high, comprising the power modules, have
to be added. The 40 watt or 80 watt power
output is needed for applications on longer high-voltage power lines.
The front picture displays the tier block
complement of the ETL540 together with
AMX500.
Wideband system PDH/SDH
2 Mbps to 622 Mbps
X.21
X.21
PLC Narrowband Back-up
≤ 64 kbps
X.21
X.21
AMX 500
AMX 500
NSD 550
NSD 550
Back-up systems for backbone channels
Enhanced transmission capacity
Digital PLC is also a favourable alternative when
there is a need to establish stand-by routes for critical services in high-capacity networks, i.e. fibre-optic
links and microwave links.
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The use of a new type, adaptive, digital transmission procedure permits maximum utilization of
the transmission capacity of a PLC channel. The
high-efficiency transmission is achieved by the
functional unit AMX500, comprising signal converter, multiplexer and additional modules for the
speech compression.
Investment protection
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Any PLC equipment can be retrofitted with
the AMX500 to increase capacity. This enables
existing communication infrastructure to be used
more efficiently without the need for high reinvestment. For example, one AMX500 is often
sufficient for the additional transfer of a few
speech and data services; the requirement for
costly wideband equipment is dispensed with.
The concept allows for a seamless transition from
an ETL500 equipment working in standard
mode to a PLC set operated in high-capacity
mode by adding the AMX500 unit housed in its
own subrack.
Retrofitting and upgrading an ETL500 equipment
into one working in high-capacity mode is possible any time on site.
Frequency allocation in an existing network will
remain unaffected, i.e. there is no need to change
line traps and coupling filters.
Operational flexibility, modes of operation
Unique features, such as single-step digital frequency
conversion, automatic channel equalization, configurable AF options, event recorder, built-in test
facilities, to name just a few, add to the operational
flexibility.
The Direct Digital Synthesis method, which is used
to generate the RF signal, results in excellent quality
and stability of the AF to RF and RF to AF conversions. The carrier frequency parameters detailed
below are easily configured by means of the userfriendly MMI500.
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Carrier frequency: Can be set in steps of 500 Hz
in the frequency range from 24 to 500 kHz
Number of channels: 1 or 2
Channel-bandwidth: 4 or 8 kHz
Position of the individual sidebands: Can be
configured individually to be in the upright or
inverted position
The ETL500 design is unique as it combines
robustness and transparency of analogue equipment
with the advantage of increased transmission capacity provided by digital transmission equipment.
This feature makes the equipment compatible with
existing analogue PLC systems and results in outstanding flexibility with regard to the applications.
The system may be used in various modes of operation depending on the requirements, type of services, line conditions, etc. Three examples illustrate
possible ways of using a given frequency band and
demonstrate the versatility of the ETL500 system.
Example 1:
When using ETL500 single channel equipment the
capacity can considerably be enhanced by adding
the AMX500 unit. A possible configuration is
illustrated below. This arrangement permits a data
channel with a transmission rate of 4800 bps to
be superimposed above the speech channel, within
which the tones for protection signalling are allocated.
Data
AMX
Speech
Pilot
4 kHz
ETL540 + AMX500 / 4 kHz
Single channel equipment with superimposed fast data channel
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1 speech channel band limited
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Teleprotection function with NSD550
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1 data channel synchronous 4800 bps
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Speech
Data NSK Pilot
4 kHz
Data AMX
Pilot
Data AMX
4 kHz
Pilot
8 kHz
ETL540 + AMX500 / 8 kHz
ETL540 + AMX500 / 8 kHz
Double channel equipment configured for hybrid mode of operation
Single channel equipment configured for high-speed operation occupying
8 kHz bandwidth
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Channel 1:
1 speech channel band limited
Aggregate data rate ≤ 64 kbps carrying e. g.:
3 low-speed FSK channels 200 baud for SCADA application
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2 speech channels
Teleprotection function with NSD550
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1 data channels synchronous 19.2 kbps
Channel 2:
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3 data channels asynchronous 2.4 kbps
High-speed mode of operation, aggregate data rate ≤ 28.8 kbps carrying:
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Teleprotection function (with NSD550)
1 speech channel
1 data channel synchronous 14.4 kbps
2 data channels asynchronous 2.4 kbps
Example 2:
The illustration above depicts an ETL500 double
channel equipment, occupying 8 kHz bandwidth.
With this configuration one channel may be exploited for operational speech combined with teleprotection and low-speed data for SCADA application, whilst the other channel may convey highspeed data and several compressed speech channels.
Example 3:
The illustration above on the right side shows an
ETL500 single channel equipment requiring 8 kHz
band, but configured to work in high-speed mode
using the entire bandwidth. With this configuration
a transmission rate up to 64 kHz may be obtained
under favourable line conditions. A possible subdivision of the available capacity among different
services may be as follows:
2 speech channels
1 data channels 19.2 kbps synchronous
3 data channels 2.4 kbps asynchronous.
Optimum performance of the teleprotection service
is ensured by the NSD550 which operates entirely
independent of the AMX500 unit.
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Easy commissioning, testing, supervision,
and maintenance
All operating states are monitored, recorded, and
evaluated by the CPU module P4LQ, which also
takes care of the frequency up-and-down conversion.
The ETL500 comes with the software MMI500,
which is a Windows® based program running on
any standard PC.
When a serial port of the PC is connected to the
SUB-D connector on the frontplate of the module
P4LQ, the MMI500 implements a man-machineinterface (MMI) for the ETL500, supporting commissioning, testing, troubleshooting, supervision,
and maintenance.
In addition to the alarms displayed by the MMI500,
LEDs on the front panel light up when an alarm is
activated. Appropriate actions on the module are
started and there are three switchover relay contacts
available for issuing an alarm. Eight more relay
contacts can be provided with the optional alarm
relay module R1BC. Two alarm criteria which can be
associated with these contacts may be specified and
entered by means of the MMI500. Non-critical alarm
situations are signalled as ‘‘deferred” alarms.
For network extensions, Tx and Rx filters can be
simply re-tuned on site with the aid of two tuning
adapters and a level meter.
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Man-machine interface MMI500
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The architecture of the digital PLC equipment
ETL500
The schematic block diagram below shows an overview of the simple and extremely practical system
architecture. The construction of a full PLC multipurpose equipment requires only a few functional
units which communicate via the internal bus.
The basic unit comprises solely the interface for the
Block diagramm ETL500 + AMX 500
NSK5
P4LQ
NSD 550
processing
O4LE
Supervision
Alarms
System Bus
The MMI500, a 32-bit Windows program running
on any standard PC, offers:
■ “Off line” configuration of an ETL500 terminal
with the facility for saving the settings in a file for
later use, e.g. download it when an ETL500
equipment has to be configured accordingly.
■ Configuration and supervision of both the local
and the remote terminal of an ETL500 link from
either side of the link.
■ Dialog windows to configure all the settings of
the ETL500 equipment, e.g. carrier frequency
characteristics, alarm parameters, AF interface
functions, NSD550 parameters, equipment identification, etc.
■ View windows displaying detailed status and
alarm information of the ETL500 in
text or graphic form, which can be
copied into documents, printed out
or saved to a file.
Data
■ Measuring facilities which can access a
anisochronous
number of AF test points internal to
E&M
the ETL500 and display the signals
Signalling
in graphic form in the frequency
Speech
domain format.
+ inband signalling
■ Automatic channel equalization of
Teleoperation
amplitude and group-delay response
(Modem, FSK)
of the complete AF band in both
transmission directions from one side
Speech, E & M
of the link. Graphic display of the
Signalling, Inband
signalling, FAX
equalized and of the non-equalized
Data, synch.,
asynch. ≤ 64 kbps,
frequency response is provided. The
RS-422, X.21
information can be printed out or
saved.
Teleprotection
■ Automatic polling and logging of
alarms to a file in the PC.
Assistance for tuning and testing of the local
ETL500 terminal. All signals needed for tuning
and testing the RF filters and AF options are
generated.
Help utility with explanations for all actions
supported by the MMI.
Event recorder for 1000 teleprotection events and
1000 alarm events with a time resolution of 1 ms
if synchronized to a GPS clock.
When the ETL500 equipment is integrated in a
network management system, each equipment can
be accessed via a unique device number.
AF / RF
Conversion
AMX500
Line
Interface
G4AI
RF
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speech and telecontrol signals O4LE, the separate
command interface for the protection signal transmission G4AI and the central processor unit P4LQ
which deals with the various signal processing and
monitoring functions. Where required, the modem
NSK5 is available for transferring low-speed data
for SCADA applications. Also required is the line
interface via which the signal exchange takes place
from and to the coupling unit.
The degree of utilization of the channel capacity can
be considerably increased by using the digital multiplexer / signal converter AMX500.
An essential feature is the fact that mission critical
services can be conducted via modules operated
separately from the AMX500 unit. The rigorous
demands of these critical services with respect to
transmission time and interference can be satisfied
excellently by this separation.
The configuration and monitoring of the system
takes place by PC via the diagnostic interface.
Central processor unit P4LQ
The following central functions are executed on the
functional unit P4LQ:
■ Digital SSB (Single Side Band) modulation in the
DDS procedure
■ Central monitoring of the hardware and software
functions
■ Generation and evaluation of the pilot signal for a
wide range of functions
■ Frequency synchronization
■ Signal quality monitoring
■ Automatic frequency response measurement and
channel equalizing
■ Serial interface for PC connection for the equipment configuration and monitoring
RF line interface
The line interface comprises all the functional units
necessary for the transmission and receive side signal
coupling to the high-voltage line. These are the
power amplifier, RF hybrid, transmit and receive filters.
ETL500 equipment is available in 3 power classes:
■ ETL505 with 5 watt output power
Application of this type of equipment is adequate
for medium voltage power lines of short to
moderate distance.
■ ETL540 / ETL580 with 40 watt and 80 watt
output power
40 watt or 80 watt output power is needed for
applications on long high-voltage power lines.
AF interface O4LE
The universal interface module O4LE provides an
audio frequency interface for the following applications:
Telephony
■ Point-to-point hot line
■ Remote subscriber
■ 4-wire PABX interface with E&M
■ 2/4-wire PABX interface with E&M and hybrid
control
■ Service telephone
Teleoperation
■ Transmission of audio frequency data signals
from modems
■ Programmable transit filter
Connection of external teleprotection equipment,
such as NSD70C
■ External teleprotection equipment
■ Signal boosting control
The unit is fully programmable via PC / MMI500.
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Integrated teleprotection equipment NSD550
stamping. The display of events is possible in text
and graphic views on the MMI500.
General
The NSD550 teleprotection equipment is used for
the transmission of protection commands in highvoltage networks.
Applications
The equipment is used exclusively together with
type ETL500 PLC equipment. It is always assigned
to the first channel in case of a dual-channel PLC.
The NSD550 signals are processed completely digitally on the RF-converter module P4LQ of the basic
ETL 500 equipment.
Depending on the application requirements,
NSD550 can transmit up to four commands with
two different modes of operation, i.e. either 2 permissive + 2 direct trip, or 3 permissive + 1 direct
trip commands. Four commands permit, for example, the protection of dual-circuit lines and direct
tripping for reactor or breaker failure protection.
NSD550 meets all requirements for blocking,
permissive and direct tripping.
The NSD550 comprises at least one relay interface module type G4AI for command transmission.
As contact multipliers or to exploit all possible
NSD550 functions, 1 or 2 additional interface
modules can be plugged in the channel subrack.
NSD550 requires no extra bandwidth because it
uses the pilot of the PLC as a guard signal and the
speech band as command channel.
Optimized algorithms for PLC channels
Integrated data modem NSK5
Using digital signal processing technologies, the
NSD550 meets the stringent requirements for command transmission over PLC links even under the
most adverse channel conditions. Algorithms optimized for PLC channels ensure dependable and
secure operation and short transmission delays.
General
The integrated data modem NSK5 is used mainly
for the transfer of low-speed data with SCADA
systems. The module is plugged in to the channel
subrack like any other AF-interface card.
Configuration, supervision and adapting to the
specific requirements is effected by means of the
MMI500 user interface.
All functions are incorporated on a single card. This
permits especially low-cost solutions when building
up telecontrol networks. Several modems can be
plugged in where necessary.
Event recorder and trip counter
Principal features
Integrated trip counters for each command and an
event recorder which stores more than 2000 command start/stop and alarm events support troubleshooting and investigations in case of faults or
abnormal conditions in the high-voltage network.
The events are stored with time stamp in a nonvolatile memory. The event recorder can be synchronized to an external GPS receiver for accurate time
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Remote Supervision & Configuration
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Full programmability; baud rate, transmit and
receive frequencies, also Tx/Rx levels are simple
to set via switches and jumpers.
All channels and baud rates corresponding to
ITU-T R.35, R.37. R.38A and R.38B are supported.
Operation is also possible with the following
channels: maximum three 600 baud channels,
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one 1200 baud channel for frequencies above
2000 Hz (speech) or in combination with other
low-speed data channels; one 1200 baud channel
corresponding to ITU-T V.23 or one 2400 baud
channel.
Distortion of the characteristic is minimized by a
help module for synchronization, a data regenerator and equalizer.
A serial data interface corresponding to ITU-T
V.24, V.28, and V.10 is available with front access
for test purposes.
The modem is electrically isolated from the
ETL500 modules.
A local loop test is possible. It can be initialized
either via the test switch on the front panel or the
corresponding interface line.
The bit error rate can be tested over the total line
length.
Principal features
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Multiplexer/converter unit AMX500
In an endeavour to enhance the transmission
capacity of the available PLC frequency spectrum,
a great deal of effort has been spent investigating
more efficient signalling methods for power line
carrier application.
PLC equipment ETL500 with the
optional add-on unit AMX500
using techniques such as low
bit-rate speech coding combined
with time domain multiplexing
and digital modulation can provide several times the transmission capacity per link under
good line conditions, compared
to traditional PLC circuits.
Transmission speed is automatically adjusted to
the prevailing channel conditions in order to
ensure maximum system availability, e.g. if data
transmission at a set speed suffers from insufficient quality because of poor line conditions,
fall-back to an appropriate lower transmission rate
will restore the quality of service to the level
required.
Robust, bandwidth-efficient digital modulation
Adaptive adjustment to the channel characteristics
Adjustable bandwidth
The bandwidth of the transmission system can
be individually set between 1000 and 7300 Hz
for each application. 8 different bandwidths are
available.
Flexible data rate programming
The data rate of the AMX500 is programmable
over the range 1200 bps to 64 kbps. The fine
adjustment facility of the transmission rate permits optimal capacity utilization of the presently
available bandwidth. The illustration below shows
an example of bit rate utilization possibilities
with 4 kHz gross bandwidth of the transmission
channel.
Possible programming of the user bit rate with a 4 kHz bandwidth
Programming examples for a data rate of 19.2 kbps
1.
Speech 7.2 kbps
2.
Speech 7.2 kbps
Speech 4.8 kbps
Sync Data 19.2 kbps
3.
Async Data 4.8 kbps
4.
Async Data
2.4 kbps
Sync Data 9.6 kbps
Anisync Data 1.2 kbps
Sync Data 4.8 kbps
Speech 4.8 kbps
Speech 4.8 kbps
Async Data 1.2 kbps
0
9.6
19.2
The data rate depends on the available bandwidth and the channel characteristics
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Up to 28.8 kbps in 4 kHz bandwidth and up to 64 kbps in 8 kHz bandwidth (each direction)
Planning information
The following diagram is for supporting the
planning of PLC links with digital transmission,
i.e. when using the AMX500. Represented is the
relation between bit rate and necessary signal-tonoise ratio (SNR) for a given maximum bit error
rate and bandwidth. The bit rates shown are for the
net bandwidths 1.4 / 1.7 / 2.1 / 3.3 and 7.0 kHz and
for a bit error rate (BER) of 10 -6.
The curves are based on a large number of field and
simulation tests.
Example: A noise ratio of 37 dB is necessary with
a 3.3 kHz bandwidth for a transmission rate of
28.8 kHz.
Bit rate / SNR characteristic (noise measured in 4 kHz bandwith)
Bit rate (kbps)
70.0
Bandwidth:
BW 7.0 kHz
60.0
BW 3.3 kHz
*
50.0
BW 2.1 kHz
BW 1.7 kHz
BW 1.4 kHz
40.0
30.0
20.0
*
10.0
*
0.0
10
15
20
25
30
35
40
SNR (dB)
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TECHNICAL DATA
PLC part
All modules of the ETL500 comply with or exceed the requirements
according to IEC Publication 60495, second edition, Sept. 1993, with
reference to single sideband PLC equipment. ETL500 complies with
European EMC Directive 89/336/EEC and the Low-Voltage Directive
73/23/EEC.
System data
System data
Operating mode
Carrier frequency range
Total range
Single sideband mode with
suppressed carrier
24 to 500 kHz
40 to 500 kHz programmable
AF bandwidth
300 to 4000 Hz / 300 to 8000 Hz
Output rated impedance
75 or 125 ohm unbalanced, optional
150 ohm balanced
Service PC interface
RS-232 / 9600 bps
Alarm outputs
potential-free changeover contacts
for
– system alarm / cabinet alarm
– hardware alarm
– link alarm
Electromagnetic compatibility and insulation tests
Complies with the
EMC requirements for:
Emission
Immunity
EN 50081-2 (EN 55022 class A)
EN 50082-2
Electrical safety
Complies with the
safety requirements
according to
IEC 60950 / EN 60950
Transmitter data
Type
Number of channels
Nominal bandwidth
Max. line attenuation
ETL505
1
4 kHz
51 dB
ETL540
1
4 kHz
60 dB
ETL540
2
8 kHz
54 dB
Due to line noise,
the line attenuation
should not exceed
the following values
25 to 30 dB 35 to 40 dB 30 to 35 dB
ff Type
Number of channels
Nominal bandwidth
Max. line attenuation
ETL580
1
4 KHz
63 dB
ETL580
2
8 KHz
57 dB
38 to 43 dB 33 to 38 dB
Ambient conditions
Normal operation
Climatic conditions
Temperature range
Relative humidity
complies with
IEC 60721-3-3, class 3K5
–5 to +45 0C
≤ 95%
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Pilot channel:
Available frequencies
Nominal frequency
ETL505
ETL540
ETL580
5W
40 W
80 W
(+37 dBm) (+46 dBm) (+49 dBm)
2160 ... 3840 Hz adjustable with MMI
in 60 Hz steps
3840 Hz
Receiver data
Due to line noise,
the line attenuation
should not exceed
the following values
Reliable operation
Mechanical conditions
Transmitter data
Type
HF output power
Peak Envelope Power (PEP)
RF sensitivity referred to the
test tone level at the RF input:
Automatic level regulation:
–30 dBm
AF output level constant within 1 dB
at +14/ –26 dB fluctuations of the RF
receive level
Alarm outputs
up to +55 0C
complies with
IEC 60721-3-3,
class 3M1
P4LQ alarm outputs
R1BC alarm outputs
With hardware,
link and cabinet alarm
Normally closed (NC) or
normally open (NO) contacts
8 relays, jumper programmable
for cabinet alarm or software
configurable alarms 1 or 2 with
MMI500
Normally closed (NC) or normally
open (NO) contacts
Telephone interfaces
Optional transit filter
Number of filters
Can be connected to
O4LE AF interface
2/4-wire PAX interface
Transmission path:
2-wire nominal input level
Input level range
4-wire nominal input level
Input level range
Speech limit frequencies
Programmable in 200 Hz steps:
0 dBm, 600 ohm balanced
–17 dBm to +4 dBm
–3.5 dBm, 600 ohm balanced
–20 dBm to +4 dBm
2.0 kHz - 3.4 kHz
Connection of external
teleprotection signalling
equipment
Input /output
Input
Number of external
teleprotection I/O
Receive path:
2-wire nominal output level
Output level range
–7 dBm, 600 ohm balanced
–17 dBm to +1 dBm
Supply
4-wire nominal output level
Output level range
–3.5 dBm, 600 ohm balanced
–20 dBm to +8 dBm
Type
Number of channels
AC supply
Remote subscriber
PAX side interface
Nominal input level
Input level range
Nominal output level
Output level range
–7 dBm, 600 ohm balanced
–17 dBm to +1 dBm
0 dBm, 600 ohm balanced
–17 dBm to +4 dBm
Subscriber side interface
Nominal input level
Input level range
Nominal output level
Output level range
0 dBm, 600 ohm balanced
–17 dBm to +4 dBm
–7 dBm, 600 ohm balanced
–17 dBm to +1 dBm
Telecontrol interfaces
O4LE AF interface
Telecontrol inputs
Max. 4 inputs
Nominal input level
Input level range
decoupled, individually adjustable,
600 ohm, balanced
0 dBm
–20 dBm to +4 dBm
Telecontrol outputs
Max. 4 outputs 600 ohm
balanced
decoupled, level individually
adjustable
Nominal output level
Output level range
0 dBm, 600 ohm balanced
–20 dBm to +8 dBm
2 (4 without speech)
telecontrol input 1 ... 4
telecontrol output 1 ... 4
data as for telecontrol I/O
with level boosting
1 per channel
ETL505
1
115/230 V
50/60 Hz
ETL540
1
115/230 V
50/60 Hz
ETL540
2
115/230 V
50/60 Hz
Power consumption AC
Normal operation
160 VA
180 VA
190 VA
Battery supply
48 VDC
48 VDC
48 VDC
Power consumption DC
Normal operation
110 W
125 W
135 W
ETL580
1
115/230 V
50/60 Hz
ETL580
2
115/230 V
50/60 Hz
Power consumption AC
Normal operation
235 VA
245 VA
Battery supply
48 VDC
48 VDC
Power consumption DC
Normal operation
165 W
175 W
ff Type
Number of channels
AC supply
Mechanical data
Dimensions and weight
Subrack
P7LC channel subrack
19” according to standard IEC 60297
and DIN 41494
3 units high
(1 unit = 44.45 mm)
6 units high
Type
Modules
Height
Width
Depth
Weight
ETL505
5
397 mm
482 mm
350 mm
16 kg
P7LA power subrack
ETL540
9
533 mm
482 mm
350 mm
26 kg
ETL580
12
711 mm
482 mm
350 mm
38 kg
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TECHNICAL DATA
AMX500
AMX500 complies with European EMC Directive 89/336/EEC and the
Low-Voltage Directive 73/23/EEC.
System data
Operating mode
Bandwith
Four-wire
Signal converter
Point-to-point
Four-wire frequency duplex
1.0 kHz/1.4 kHz/1.7 kHz/2.1 kHz
3.1 kHz/3.3 kHz/7.0 kHz/7.3 kHz
Max. line attenuation
Depends on transmission
rate and bandwidth
Alarm criteria
Alarm outputs
Collective alarm
Max. contact load
Maximum data rate,
synchronous
Bandwidth
1.0 kHz
1.4 kHz
1.7 kHz
2.1 kHz
3.1 kHz
3.3 kHz
7.0 kHz
7.3 kHz
Loss of modem synchronization,
block error rate > 10-3 activates
alarm
1 changeover contact
30 W/150 VDC /1A
60 VAC /125 VAC /1A
Ambient conditions
Operation
Temperature and humidity
Mechanical
IEC 60721-3-3 Class 3K5
IEC 60721-3-3 Class 3M1
Storage
Temperature
Mechanical
IEC 60721-3-1 Class 1K5
IEC 60721-3-1 Class 1M1
Transport
Temperature
Mechanical
IEC 60721-3-2 Class 2K5
IEC 60721-3-2 Class 2M1
Electromagnetic
compatibility
Complies with the EMC
requirements for:
Emission
Immunity
EN 50081-2 (EN 55022 class A)
EN 50082-2
Electrical Safety
Complies with the safety
requirements according to
IEC 60950
EN 60950
The data rates achievable in practice
are dependent on the actual channel
characteristics (line interference characteristic, noise ratio, distortions).
Automatic data rate
adjustment
Fall-back, fall-forward
mechanism
Data formats
RS-232
Permits maximum utilization of
available channel capacity with
changes in transmission characteristics.
synchronous mode, clock from
DCE or DTE
asynchronous mode, all standard
formats
anisonchronous mode, transparent
transfer of low-speed data
RS-422/V.11, X.21
synchronous mode, clock from
DCE
Serial data interface
RS-422/V.11, X.21, RS-232
Line interface, four-wire
Max. transmission level,
average power
I/O impedance
Suppression of outer band
signals
Receive sensitivity,
average power
Line interface, two-wire
Max. transmission level,
average power
I/O impedance
Suppression of outer band
signals
Receive sensitivity,
average power
14
≤ 8.8 kbps
≤ 12.8 kbps
≤ 15.2 kbps
≤ 19.2 kbps
≤ 28.8 kbps
≤ 28.8 kbps
≤ 64 kbps
≤ 64 kbps
0 dBm
600 ohm, balanced
40 dB
–30 dBm
0 dBm
600 ohm, balanced
40 dB
–30 dBm
Multiplexer
Number of data channels
4 per module
Data rate
Individually adjustable
for each channel
Each channel can be used
for data or for speech/FAX
transmission
aggregate data rate ≤ 64 kbps
1200 to 64 000 bps
Data formats
RS-232
synchronous mode, clock from
DCE or DTE
asynchronous mode, all standard
formats
anisonchronous mode, transparent
transmission of low-speed data
RS-422/V.11, X.21
synchronous mode, clock
from DCE
Serial data interface
galvanically isolated
RS-422/V.11, X.21, RS-232
RS-232
25-pole plug connector with cable
to “Krone”
RS-422/V.11, X.21
15-pole plug connector with cable
to “Krone”
600 ohm, balanced
–30 to +2 dBm
–3.5 dBm
Receive level
Standard
–30 to +2 dBm
–3.5 dBm
Speech interface 2-wire
Transmission level
Standard
600 ohm, balanced
–30 to +2 dBm
0dBm
Receive level
Standard
–30 to +2 dBm
–7.0 dBm
Service interface for
PC connection
Sub-D plug connector 9-pole
PC Software
For configuration, parameter setting,
alarm and status interrogation
Supply
Speech-/FAX module
Vocoder
Speech interface 4-wire
Transmit level
Standard
Battery supply
Insulation voltage
Input voltage range
Power consumption
galvanically isolated
2 kV rms, 1 min.
36 ... 72 V
≤ 60 W
Mechanical data
Compression algorithms LPC,
P-CELP, Multipulse
FAX recognition
Recognition and detection algorithm
Bit rate for speech
transmission
2400, 4800, 7200, 8000, 9600,
14 400, 16 000 bps
Bit rate for FAX
transmission
2400, 4800, 7200, 9600 bps
Subrack
Width:
Height:
Depth:
Weight:
19”
482.5 mm
132.5 mm
291 mm
subrack fully equipped: 6 kg
Operating modes
■ Four-wire PABX-PABX mode with E&M status signalling and DTMF
signalling for dialling transmission
■ Remote subscriber
Two-wire connection of a remote subscriber from a local PABX
■ Point-to-point connection (Hot-line mode)
■ Service telephone
Service telephone mode with direct call from station to station. The
other modes have priority
■
FAX transmission
Modifications or deviations which are due to technical progress are reserved.
15
www.abb.com/utilitycommunications
1KHA - 000 586 - SEN
1000 12.02 Printed in Switzerland
ABB Switzerland Ltd
Utility Automation Systems
Brown Boveri Strasse 6
CH-5400 Baden/Switzerland
Phone +41 - 58 - 589 37 35
or
+41 - 844 845 845 (Call Center)
Fax
+41 - 58 - 585 16 82
e. Mail utility.communication@ch.abb.com