GE Grid Solutions
D20/D200 Technical Overview
GE Information
PRPI-019-3.00-10
47
2.4.6.3 D20S Specifications
Table 8 D20S Specifications
Item
Description
Processor
8-bit Freescale 68HC11 MPU
Clock
2 MHz MPU clock
Memory
•
32 KB EPROM
•
24 KB static RAM
•
512 bytes EEPROM
Inputs
64 bipolar inputs in 8 groups of 8
Point Types
•
Status/alarm with COS detection
•
SOE
•
Form A or Form C pulse accumulator (16-bit binary counter)
•
Binary coded decimal
•
Pulse duration
Current Burden
±3 to ±6 mA per input
Scan Rate
1.0 ms
Debounce
Selectable 0 to 255 ms
SOE Time Resolution
1.0 ms
Contact Wetting
±12, ±24, ±48, ±125 V
Overload Rating
500 VDC (common mode to ground)
Component Isolation Rating
1500 Vrms
Dielectric Rating
1000 VDC
D.20 Link Ports
2
Maintenance Port
9600 baud, RS-232
Power Requirements
20-60 VDC, 3 W typical
Size
19" x 5.25" x 2.5"
LED Indicators
•
Common LEDs, described in Section 2.2.1 ,
•
For each input point, a RED LED to indicate the ON/OFF state of
the point.
2.4.6.4 D20S Options
The following D20S termination board options are currently available:
Table 9 D20S Options
GE Part Number
Description
507-0101
WESDAC D20S (20-60 VDC) standard.
507-0103
WESDAC D20SHV2 (40-150 VDC) high-voltage.
517-0165
D20S 64 channel digital input termination board with compression blocks.
517-0179
D20SD 64 channel digital input termination board with DB25 connectors.