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THE
TMN2003RTU TELESUPERVISION REMOTE UNIT IS
MULTI-PROTOCOL, BESIDES BEING THE MOST COMPACT
IN THE MARKET
The
TMN Remote Unit has been designed with the
premises of flexible data transporting, through
IP networks or private data links, emulating the
principal protocols of the market, mainly those
of the legacy systems, creating an option of a
soft migration to a forefront technology,
without the discontinuity of the present
operation. The reduced dimensions of the
equipment allows its easy installation in
containers or stations where there is not enough
physical space. In addition, this equipment can
amplify networks or replace former remote units
either by using the same pre-existing protocols
and transmission means or creating new networks
based on TMN and TCP/IP protocols. The latter
situation allows that all new functionalities
may be explored.
BRIEF TECHNICAL
CHARACTERISTICS
8/16/32/64 digital inputs (electronic ground or
non-potential contact)
4/8/16 digital outputs of the non-potential
contact kind
Analog input for AC energy phases
Analog input for DC Voltage (48V)
Analog input for DC Current (0-2000A)
Analog input for Temperature (-10 to +60°C)
User interface on local display (digital inputs
& outputs, analog inputs)
Physical access control to stations (via
functional identification card - badge)
Field test instrument by using a second remote
unit
Power requirements: 24 to 48 VDC
THE
ANALOG INPUT TRANSDUCERS USE RS-485 PROTOCOL IN
SUB-NETWORK
The
analog input transducers (Vac, Vdc and Idc) are
intelligent and galvanic isolated. They form a
RS-485 bus topology sub-network managed by the
principal CPU of the remote unit. This
sub-network supports up to 32 I/O devices that
can be 1200 meters distant from the principal
CPU, avoiding the inconvenient AC energy cabling
through the transmission office. All the
transducers used in a station are packed in a
wall housing and preferably must be installed in the
energy office without the necessity of racks or
any other kind of structure.
TEMPERATURE
TRANSDUCERS
The
temperature transducers are as intelligent as
the other I/O devices connected to RS-485
sub-net, which transmit all data gathered from
the temperature digital sensors. The temperature
transducer is powered by the same two RS-485
data wires.
ACCESS CONTROL VIA
IDENTIFICATION CARD INTEGRATED TO REMOTE UNIT
The
identification card reader controls the opening
of the office doors, identifying the time and
date of access of the employees or third
parties, providing control and security. This
device stores up to 9000 card identification
numbers and only allows access on a date and at
the time authorized, which are individually
programmed for each user. The system also works
in an autonomous way in case of temporary
unavailability of communication link with the
center. The communication link between card
reader and center can be provided either by an
IP network or by a private voice channel
according to the availability of links of the
customer. | 
