DescriptionDirectionNamePin #
Digital IO Common ReturnReturnReturn5
Digital Input and Output Specifications are described in Table 3 and Table 4 .
Table 3 is considered “dry contact”, and Table 4 is considered “wet contact”.
Table 3: Digital Input Specification
UnitMaximumMinimumSpecification
Volts602.2Input Voltage High
Volts1.2-Input Voltage Low
uA0.68mA
Note1
-Input Current
Note1: Current is flowing out of the terminal although it is an input, i.e. sourcing. The current is flowing in
the terminal for the output, i.e. sinking.
Table 4: Digital Output Specification
NotesUnitMaximumMinimumSpecification
No external voltage
applied.
Volts2.5Output Voltage High
No external voltage
applied.
Volts0.4-Output Voltage Low
Ohms3.3K – 1%3.3K – 1%Internal Pull-up
Resistance
Volts3-Internal Pull-up Voltage
External resistance
required to limit current
to 200mA.
Volts603.3External Pull-up Voltage
mA200Sink Current
Common features of the Digital I/O are:
• Withstands up to 60V applied at the terminal.
• Reverse voltage protected and causes no damage to the equipment.
• Digital input and output can coexist on different channel.
• LED Indicator: provision-able, On: Active, Off: Non-active.
• Electrical isolation: 2000 VDC.
• 4kV Surge protected (IEC 61000-4-5).
IR1101 Industrial Integrated Services Router Hardware Installation Guide
16
Product Overview
Digital I/O Connector
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