Cisco Systems OL-20932-02 Manual De Usuario
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Cisco Physical Access Gateway User Guide
OL-20932-02
Chapter 1 Overview
Power Options and Requirements
Installing Surge Suppressors on Output Device Connections
Install a surge suppressor between all output devices and the Gateway, Reader, or Output modules to
protect the devices from power surges. Use one of the following methods:
protect the devices from power surges. Use one of the following methods:
•
If the base on a lock device receives power from an external power source, install an isolation relay
between the output device and the Gateway, Reader, or Output module.
between the output device and the Gateway, Reader, or Output module.
•
Install a MOV (Metal Oxide Varistor) surge protection product, such as the Ditek DTK-ESS Electric
Switch Suppressor kit from Diversified Technology Group. An example installation is shown in
Switch Suppressor kit from Diversified Technology Group. An example installation is shown in
. You can also use a diode 4N4001 for surge suppression.
Figure 1-8
Sample Surge Suppressor Installation
Connect Reader Devices with Module Power Off
Disconnect power from the Gateway or Reader module before connecting reader devices to the modules.
Connecting a reader device when the modules are powered can cause the Gateway or Reader module to
malfunction.
Connecting a reader device when the modules are powered can cause the Gateway or Reader module to
malfunction.
Cisco Access
Control Module
Surge
Suppressor
Surge
Suppressor
Power Source
Output Device
Terminal Strip
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