Cisco IR1101, Hardware Installation Manual

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Description Direction Name Pin #
Digital IO Common Return Return Return 5
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
Unit Maximum Minimum Specification
Volts 60 2.2 Input Voltage High
Volts 1.2 - Input Voltage Low
uA 0.68mA
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
Notes Unit Maximum Minimum Specification
No external voltage
applied. Volts 2.5 Output Voltage High
No external voltage
applied. Volts 0.4 - Output Voltage Low
Ohms 3.3K – 1% 3.3K – 1% Internal Pull-up
Resistance
Volts 3 - Internal Pull-up Voltage
External resistance
required to limit current
to 200mA. Volts 60 3.3 External Pull-up Voltage
mA 200 Sink 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