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V-RTU2000 Series
Veesta - Remote Terminal Unit
Technical Specification Manual
6.3
HDO Card
6.3.1
VR-2735 / VR-2737 Specifications
1.
Microprocessor
2.
Memory
3.
Output Channels
4.
Contact Type
5.
Contact Rating
(Max. Carrying Current)
6.
Max. Switching Voltage
7.
Isolation - Coil to Contact :
8.
Common Mode Voltage
9.
Surge Withstand Capability :
(SWC)
10.
Power Requirement
11.
Card Dimension
12.
Environment
Operating Temperature :
Storage Temperature
Relative Humidity
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Digital Output Card (heavy duty) is an intelligent IO Card, which is
used to control the action of the field equipment, such as Trip/Close
of CB, use/lock of protection relay and manual/auto of transformer
AVR control, etc. In addition to CPU comply with its Firmware, the
drive circuit for controlling the output is also provided. It can connect
with CPU Card through LIOC RS-485 communication interface, the
DATA & /DATA Communication Signal is linked by the backplane
without additional wirings. The card model VR-2735 external
connection contains 4 Select Relay (CH1~CH4) and 1 Main
Execution Relay (ME), and model VR-2737 consist of 4 direct control
relay which are transmitted through 96-Pin DIN Connector to 10-Pin
terminal on the backplane for actual application. The Relay contact
type of HDO Card is 1c; the user can select contact "a" or contact "b".
:
AT89C2051, 12MHz
:
2K Bytes Flash ROM
128 Bytes SRAM
:
VR-2735 Model:
4 Select Relay + 1 Main Execution Relay
VR-2737 Model:
4 Direct Execution Relay
:
1 Contact O/P (1a or 1b selectable)
:
10A (2000VA, 200W)
:
400V AC or 300V DC
AC 2000V
:
250V DC (Min.)
ANSI/IEEE C37.90.1-1989
(3KV Oscillatory Test, 5KV Fast Transient Test)
:
+5V DC ±5%, 100mA
:
160mm * 100mm
-25°C to 70°C
:
-40°C to 85°C
:
10% to 95% non-condensing
Chapter 6 - Digital Output Unit
Page 47 of 90
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