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I/R Module
The I/R90 module supports 4 Field Contact Inputs and 6 Form A Relay Outputs. Each input requires
approximately 2 mA current per input and each input is optically isolated. The relay outputs can
switch a maximum voltage of 240VAC or 62 VDC and maximum current of 2.0A. There are jumpers
on the board for N.O. (Normally Open – Contact closes on alarm) or N.C. (Normally Closed – Contact
opens on alarm). In addition, there are jumpers for selecting an address within the Input Card Rack.
Connection is by screw type terminals (1.5mm², 16 AWG max.).
The different card types available are shown below.
Card Type
I/R 90
I/R 91
Field Contact Voltage
24 VDC (Internal)
48 VDC (External)
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