SCC-DI01 Isolated Digital Input Module User Guide
4
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Specifications
These specifications are typical at 25 °C unless otherwise stated.
Input Characteristics
Number of channels................................1
Maximum input voltage..........................30 VDC or 30 VAC
Digital logic levels
Input current
5 V input ..........................................1.5 mA
24 V input ........................................7.0 mA
Isolation ..................................................42 VDC from computer ground
Propagation delay
Low to high......................................10
µ
s
1
High to low ......................................250
µ
Rise time .................................................10 ns max
Fall time ..................................................10 ns max
Power Requirement
Digital power ..........................................61 mW max
Physical Characteristics
Dimensions .............................................8.89 cm
×
2.92 cm
×
1.85 cm
(3.50 in.
×
1.15 in.
×
0.73 in.)
Mass........................................................28.6 g (1.0 oz)
Level
Min
Max
Input low voltage
(DC or Peak AC)
—
±
1 V
Input high voltage
DC
1 kHz AC
±
2 VDC
4 V
rms
±
30 VDC
30 VAC
1
The switching characteristics (turn-on time, switching time, and turn-off time) of the optical isolator used on the board limit
the data transfer rate.
