Access control applications
3.10 EST3 Installation and Service Manual
• Manual unlock
• Minimum unlock
The CRC relay can be used to control a door opener. Door open
timers control the number of seconds that the relay remains
active. The ACDB has two door open timers:
• Manual open time
• Relay open time
Access control applications
The remaining topics in this chapter discuss specific access
control applications. Each topic gives you an overview of the
application, showing the components required and their
interconnection.
Each topic includes a block diagram and general description of
the application. Other factors (as called out on the drawings) are
discussed under separate headings in the topic.