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V-RTU2000 Series
Veesta - Remote Terminal Unit
Technical Specification Manual
3.3
CPU Card
3.3.1
VR-2717A Specifications
1.
Microprocessor
2.
Operating Frequency
3.
Flash Memory
4.
SRAM
5.
Real Time Clock
6.
TCXO
7.
Serial Ports
8.
LAN Port
9.
Power Requirement
10.
Card Dimension
11.
Environment
Operating Temperature
Storage Temperature
Relative Humidity
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CPU Card is the portion of V-RTU2000 Series which communicate
with the other cards through communication channels. The CPU
Card providing 3 kinds of functions on the same hardware, which is
as Master CPU Card, IO CPU Card (applied for Communication
Server) and RTU CPU Card (applied for IED). Two RS-232 channels
communicate with V.29 Modem Cards, then to Master station. One
RS-232 channel is applied to communicate with Test Set to setup
Data Base and perform maintenance. A RS-485 channel is used for
internal communication with Local I/O Cards (LIOC).
TCXO, ± 1 ppm (0°C to 50°C) is to suffice the strict requirement of
time base accuracy.
:
RDC R1120 RISC Microprocessor
:
80MHz
:
256K Bytes
:
256K Bytes, Battery Back-up
:
BQ4802LYPW, Battery Back-up
:
25MHz ±1 PPM (0°C to 50°C)
:
One RS-232 (Isolation) for Maintenance
One RS-485 for Local I/O communication
One RS-485 (Isolation) for External communication
:
One 10/100 Base-T Ethernet port
:
+5VDC ±5%, 250mA
:
160mm * 100mm
-25°C to 70°C
:
:
-40°C to 85°C
:
10% to 95% non-condensing
Chapter 3 - Main Unit
Page 33 of 90
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