xiJ - Technical Manual Version 0.06
24
3.8.3.
Optically isolated Digital Input
3.8.3.1.
Optically isolated Digital Input
–
General info
Item
Parameter / note
Maximal input voltage
24V DC
Common pole
Yes, IO GND
Effect of incorrect input terminal connection
Reverse voltage polarity protected
Effects when withdrawing/inserting input
module under power
No damage, no lost data
Maximum recommended cable length
10m
Input level for logical 0
Voltage < 1.2V / Current 0mA to 0.3mA
Input level for logical 1
Voltage > 3.3V / Current > 1mA
Input debounce filter
No / Current > 1mA
Input delay
–
rising edge
0.1µs (V
INPUT
=10V, T
AMBIENT
=25°C)
Input delay
–
falling edge
5µs (V
INPUT
=10V, T
AMBIENT
=25°C)
Number of inputs
1
External trigger mapping
Yes
Input functions
Trigger, get current level (rising or falling edge are supported)
table 3-12, Optically isolated digital input, general info
Note: Applies to the current revision (Rev6). Values and maximal voltage for Rev4 and Rev5 differ.
3.8.3.2.
Digital Input
–
signal levels
V-in-min [V]
V-in-max [V]
State
I-max [mA]
-24.0
1.2
Off (0)
0.0
–
0.3 mA (0mA nominal)
1.2
3.3
Transient
-
3.3
24.0
On (1)
1
–
6 mA (5mA nominal)
table 3-13, digital info, signal levels
Note:
•
Input level Vin represents amplitude of the input signal.
•
Voltage levels referenced to common ground GND
