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CHAPTER 1: BEFORE YOU START
Digital inputs
D20E ETHERNET I/O MODULE INSTRUCTION MANUAL
Number of Digital
D20E-C
Inputs
D20E-S: 64 bipolar
Input Options
LVDI: 20 to 60 VDC (5 mA burden), nominal 24/48 VDC or
HVDI: 90 to 290 VDC (2 mA burden), nominal 110/125/220/250 VDC
Note: D20E-S 220/250 VDC derate to +60°C with 48 inputs ON
Insulation/Isolation
2800 VDC
>100 MΩ
Time Tag Accuracy
On NTP, digital Input Time Tag accuracy on a D20E-S or D20E-C is ±1.0 ms
after the startup period of approximately 30 minutes from power cycle or
power up, and ±15 ms during the startup period.
Time Tag Resolution
1.0 ms
SOE Buffer Size
256 events
Debounce Filter
Configurable per input:
• 1 to 1000 ms
Oscillation/Chatter
Configurable per input:
Filter
• 1 to 100 per 100 ms or 1 second period
Accumulator/Counter
Digital Input can be configured to running or freeze counter point
Input
• 100 Hz maximum
• D20E-C
16 Transition counter points
8 pairs Dual Point counters
16 Form A counter points
16 Form B counter points
8 pairs Form C counter points
• D20E-S
64 Transition counter points
32 pairs Dual Point counters
64 Form A counter points
64 Form B counter points
32 pairs Form C counter points
Local Indications
Blue LED per input
• D20E-C
16 input points
• D20E-S
64 input points
Conducted Immunity
As per:
• IEEE C37.90.1
• IEC 61000-4-4
• IEC 61000-4-5
• IEC 61000-4-6
• IEC 61000-4-16
:
16 bipolar
:
:
:
:
GE INFORMATION
27
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