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V-RTU2000 Series
Veesta - Remote Terminal Unit
Technical Specification Manual
2.3
Hardware Structure
2.3.1
Power Supply Unit
2.3.1.1 DC 24V/DC 5V & 24V PS Card
2.3.1.2 AC 220V/DC 5V & 24V PS Card
2.3.2
Main Unit
2.3.2.1 Backplane
2.3.2.2 CPU Card / CM Card
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V-RTU2000 Series hardware structure is shown in Figure 2-3,
designed as a Plug-In Type and set up in 19" Rack/Module
enclosure. The ideal plug-in type configuration provides a very useful
structure in maintenance. The size of Cards is following the Euro-
Card standard, 100mm x 160mm for Card. In according to operation
function, RTU hardware is for four main units.
The power supply of V-RTU2000 Series contains the following cards:
Power supply card, designed in DC 24V~75V input and DC 5V
(10W), DC 24V (3W) output. Connecting with the backplane is linking
with 48-pin DIN connector, which provides 5V working power supply
for the RTU and 24V driving power supply for DO/HDO Card.
Power supply card designed in AC 85V~265V or DC 65V~375V input
and with DC 5V (10W), DC 24V (3W) output. Connecting with the
backplane is linking with 48-pin DIN connector, which provides 5V
working power supply for the DTU and 24V driving power supply for
DO/HDO Card.
The main unit of V-RTU2000 Series consists of 1 Backplane and 1
Master CPU Card; if necessary several IO CPU Cards and several
CM Cards.
As a passive element, it is buffering the path of power supply,
communications Bus and with plugging slots for all kinds of Circuit
Cards. It is consisted of one power slot, one CPU slot and several I/O
slots. It is provide pluggable type terminal blocks for external wire
connection.
Use Intel, 16-bit high speed microprocessor, with two isolated RS-
232/485 ports for host communication, one RS-485 port for local IO
communication, and one isolated RS-232 port for Test Set and one
Ethernet 10/100Mbs at front panel.
Chapter 2 - System Overview
Page 20 of 90
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