Norstar Doorphone Installation Guide
16
Installation
Step 4: Program Doorphone (cont’d)
Door Opening Control
Two options are available for convenient door opening control, both requiring
optional equipment:
• External Relay Module (ERM)
• Door Opening Controller (DOC)
Note: The ERM and DOC provide convenient control of locked mechanisms but are
not intended for sole premise security. In high security environments, backup
systems should be used for added protection. Power failure, device failure, wiring
faults and unauthorized equipment access can all contribute to a failed locked or
unlocked situation. Refer to the installation documents for the relevant equipment
option.
The ERM connects to the KSU’s external page port contacts to provide high current
switching capability. Choose the DOC if external paging is to be used on the system.
Note: When an ERM is installed, invoking an external page (
ƒ
fl
¤
) from
any station will activate the release mechanism.
The DOC screw terminals are connected to the Doorphone using one pair of wire.
The DOC receives data from the Doorphone and must be dip-switched for proper
operation.
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