Rosslare AC-425, Руководство по установке оборудования и инструкция пользователя

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AC-425 Hardware Installation and User Guide 21
4. Input and Output Connections
This chapter describes the AC-425 access control panel's input and output connections.
4.1 Input Types
There are four input types:
 N.C.
 N.O.
 Single EOL resistor
 Double EOL resistor
Inputs IN1, IN2, IN3, and IN4 may be configured individually as either supervised or non-
supervised inputs. Tse the AxSraxNG™ system to configure each input separately.
Non-supervised inputs have two states:
 Normal
 Abnormal
Supervised inputs have three states:
 Normal

Abnormal
 Trouble
The Trouble state is caused by either tampering with the input circuit or by faulty hardware
installation. Once an input is configured as a supervised input, add a resistor of 2.2 k
Ω , of
8.2 k Ω , or both on the input circuit. See the following diagrams.
4.1.1 Normally Open Input Connection
A Normally Open Input has 2 states:
 Switch Open – Normal State:
Loop resistance = Infinite (open circuit)
 Switch Closed – Abnormal State:
Loop resistance = 0 (short circuit)