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:
•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.
•Install a MOV (Metal Oxide Varistor) surge protection product, such as the Ditek
Figure 1-8 Sample Surge Suppressor Installation
Cisco Access
Control Module
Surge
Suppressor
Surge
Suppressor
+-
Power Source
+
Output Device
-
277557
Terminal Strip
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.
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