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RDR2S-A and I8O4 Hardware Installation Cable Requirements

24-10239-596 Rev. D

4-State Inputs Wiring: N/C Switch

4-State Inputs Wiring: N/O Switch

General Input Configuration

An input must be configured before it can be used.

2-State Inputs

2-state inputs wired as shown on page 21 must be uncalibrated. An

“Uncalibrate” command must be executed for each 2-state input.

4-State Inputs

4-state inputs wired as shown on page 22 must be calibrated. There are

two methods available to calibrate a 4-state input: “Calibrate” and

“Calibrate with Resistor.”

•Calibrate

Once the input resistors are wired as shown on page 21 and the input

is placed in the secure state, a “Calibrate” command may be executed.

This method should be used when the input resistance tolerance is

greater than 1% or unknown, when the cable requirements on page 17

are not guaranteed, when the resistor value is less than 500 ohms, or

when all the inputs on an RDR2S-A are not wired with the same

resistor values.

Note: The 4-state wiring

requires two resistors of the

same value. The resistors

can be 150-2000 Ohms, 1%,

1/4W. The recommended

resistor is 1200 Ohms.

e.g. DOOR

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