GE D20, Технический обзор

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D20/D200 Technical Overview
GE Grid Solutions
60
PRPI-019-3.00-10 GE Information
Table 16 D20C Specifications
Item Description
Processor 8-bit Freescale 68HC11 MPU
Clock 3 MHz MPU clock
Memory
•
24 KB EPROM
•
32 KB static RAM
•
512 bytes EEPROM
Analog Inputs
Physical Plug-in daughter board for 16 bipolar, differential inputs
Input Adapters Refer to the Index for a list of available input adapters.
Accuracy ±0.05% (voltage), ±0.1% (current)
Temperature Coefficient ±10 ppm per °C
Resolution 12-bits plus sign
Conversion Rate
•
275 ms for 16 inputs @ 60 Hz
•
328 ms for 16 inputs @ 50 Hz
Dynamic Range of Converter 125% of normalized full scale inputs
Input Impedance 44 Mohm ±5% (VDC)
Common Mode Rejection (60 Hz) 95 dB
Normal Mode Rejection (60 Hz) 60 dB
Over voltage Rating ±35 VDC (normal mode)
Analog Inputs/Outputs
Physical Plug-in daughter board for 8 unipolar or bipolar (voltage only)
outputs or 8 unipolar current outputs, and 8 bipolar inputs @ ±5
V (see Analog Inputs above)
Output Ranges
•
0 - 5, 0 - 10, ±5, ±10 V
•
0 - 1, 0 - 5, 0 - 10, 0 - 20 mA
Accuracy 0.1% (voltage), 0.15% (current)
Resolution 12-bits plus sign
Maximum Output 5 kohms @ 5 V out
Status Inputs
Physical 16 optically isolated inputs in two groups of 8. Inputs in one
group will share a common return and contact wetting.
Contact Wetting ±12, ±24, ±48 or ±125 VDC
Current Burden ±3 to ±6 mA per input
Scan Rate 1.0 ms
Debounce Selectable 1 to 255 ms
SOE Time Resolution 1.0 ms
Overload Rating 500 VDC (common mode to GND)