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V-RTU2000 Series
Veesta - Remote Terminal Unit
Technical Specification Manual
6.2
DO Card
6.2.1
VR-2736 Specifications
1.
Microprocessor
2.
Memory
3.
Output Channels
4.
Contact Type
5.
Contact Rating
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 is an intelligent IO Card, which is used to control
the operation of field equipment, such as the use/lock of protection
relay, manual/auto of transformer AVR control, and AGC control of
generator set, etc. Providing basic CPU comply with its Firmware,
also providing the drive circuit, for control output. It connects with
CPU Card through LIOC RS-485 communication interface, the DATA
& /DATA Communication Signal is linked by the backplane without
additional wirings. The external connection contains 8 Digital Output
Points (CH1~CH8), 1 Common Point (COM+) and 1 Framing Ground
(FG) in the model of VR-2736 and 2 Common Point (COM1,COM2)
in the model of VR-2736A, which are transmitted through 96-Pin DIN
Connector to 10-Pin terminal on the backplane for actual application.
On VR-2736 DO Card, the relay contact is designed in 1a+1b for the
user to select "a" type contact or "b" type contact. On VR-2736A DO
Card, there is selectable by strap of J2, J3 to choose auto-resettable
fuse for two output contacts and/or high current 10A fuse with Main
Execution Relay.
:
AT89C2051, 12MHz
:
2K Bytes Flash ROM
128 Bytes SRAM
:
8 Channels
:
1 Contact O/P
:
5A at 250V AC
5A at 30V DC
:
380V AC
125V 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 46 of 90
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