Rosslare AC-225E - 4 Input and Output Connections; Input Types; Normally Open Input Connection

Input and Output Connections
20 AC-225x Series Hardware Installation Manual
4. Input and Output Connections
This chapter describes the AC-225x access control panel's input and output
connections.
4.1 Input Types
There are four input types – Normally Open, Normally Closed, Normally Open
Supervised 1 or 2 resistors, and Normally Closed Supervised 1 or 2 resistors.
Inputs IN1, IN1A, IN2 and IN2A may be configured individually as either
supervised or non-supervised inputs. Configure each input separately via the
AxTraxNG system.
Non-supervised inputs have two states:
 Normal State
 Abnormal State
Supervised inputs have three states:
 Normal State
 Abnormal State
 Trouble State
The Trouble state is caused by either tampering with the input circuit or by
faulty hardware installation. Once configured as supervised input, add a
resistor of 2.2 kΩ, of 8.2kΩ or both on the input circuit. See the figures in the
following subsections.
4.1.1 Normally Open Input Connection
Normally Open Input has 2 states:
 Switch Open – Normal State:
Loop resistance = Infinite (open circuit).
 Switch Closed – Abnormal State:
Loop resistance = 0 (short circuit)