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V-RTU2000 Series
Veesta - Remote Terminal Unit
Technical Specification Manual
5.2.1
VR-2722A Specifications
1.
Microprocessor
2.
Memory
3.
Input Channel
4.
Current Limit
5.
Input Type
6.
Min. Turn On Voltage
7.
Max. Turn Off Voltage
8.
De-bounce Time
9.
Max. Input Voltage
10.
Max. Input Frequency
11.
Common Mode Voltage
12.
Isolation
Internal to Digital Input
13.
Surge Withstand Capability :
(SWC)
14.
Power Requirement
15.
Card Dimension
16.
Environment
Operating Temperature :
Storage Temperature
Relative Humidity
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Chapter 5 - Digital Input Unit
:
AT89C2051, 12MHz
:
2K Bytes Flash ROM
128 Bytes SRAM
:
8 Channels
:
36K ohm / 2W for 129V DC
(Limiting Resistor for each Channel)
:
Bipolar
:
65V DC for 129V DC
:
50V DC for 129V DC
1ms ∼ 250ms (Software Definable)
:
:
200V DC for 129V DC
:
100 Hz
(Low & High Time > De-bounce Time)
:
250V DC (Min.)
:
3000Vrms
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
:
Page 43 of 90
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