user manual

1-9

Cisco Physical Access Gateway User Guide

OL-20932-02

Chapter 1 Overview

Door Device Wiring Requirements

The wires used for an access control door depend on the devices installed at the door. Before installing

the wiring for an access control system, do the following:

• Determine the number and type of door devices used at each door (as shown in Figure 1-6).

• Determine the number and type of wires used for each device, based on the descriptions in Table 1-2.

• Determine the length of the wires based on the distance between the device and the access control

Gateway, or optional module (such as a Reader, Output or Input module).

Figure 1-6 Air Return Using Ceiling Space or Using Ductwork

Table 1-2 describes the wires used for typical input and output door devices. Refer to the device

documentation for more information and to verify the following requirements.

Table 1-2 Wires Used for Typical Door Devices

Function

# of

Wires

Typical

Wire

Gauge Type Use

Request to Exit 2 22 Input Used to exit the door. This may be replaced by an

egress crash bar if the exit is not alarmed.

Door position

switch

2 22 Input Used to determine if door is open or closed. This

device can cause a door forced open alarm after a

time out. This devise is usually supervised.