Specification
Digital Isolated Inputs
Number of inputs:
48
Type:
Non-polarized,
optically
isolated
from each other and from the computer
(CMOS compatible)
Voltage Range
48A:
Logic Low: 0 to 1.5VDC or AC Rms (40 to 10kHz)
Logic High: 3 to 31VDC or AC Rms (40 to 10kHz)
48B:
Logic Low: 0 to 5VDC or AC Rms (40 to 10kHz)
Logic High: 11 to 60VDC or AC Rms (40 to 10kHz)
Isolation:
Optically
Isolated
channel-to-ground or channel-to channel * see note
Input Resistance
48A:
1.8K ohms in series with optocoupler
48B:
15K ohms in series with optocoupler
Non-Filter Response Times:
Rise Time = 10 uS / Fall Time = 30 uS
Filter Time Constant:
4.7ms
Power Required:
+5VDC @ 300mA typical
Environmental
Operating Temperature:
0
E
C to 70
E
C (optional industrial temperature range -40
E
C to +85
E
C)
Storage Temperature:
-55
E
C to +150
E
C
Humidity:
0% to 95% RH, without condensation
Board Dimension:
PC/104 format, 3.550” by 3.775”
**Note on Isolation:
Opto-Isolators and connectors are rated for at least 500V, but isolation voltage
breakdowns will vary and is affected by factors like cabling, spacing of pins, spacing between traces on
the PCB, humidity, dust and other environmental factors. This is a safety issue so a careful approach is
required. For CE certification, isolation was specified at 60V DC or AC rms. The design intention was to
eliminate the influence of common mode. Use proper wiring techniques to minimize voltage between
channels and to ground. Tolerance of higher isolation voltage can be obtained on request by applying a
conformal coating to the board.
Manual 104-IDI-48 SERIES
6
