Cisco Systems OL-20932-02 Door Device Wiring Requirements, Typical, # of, Function, Wires

Chapter 1 Overview

Door Device Wiring Requirements

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 1-2describes 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
			Typical
		# of	Wire
Function		Wires	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		2	22	Input	Used to determine if door is open or closed. This
switch					device can cause a door forced open alarm after a
					time out. This devise is usually supervised.

Cisco Physical Access Gateway User Guide

OL-20932-02 1-9