Access control applications
EST3 Installation and Service Manual 3.27
Note:
Refer to the appropriate ADA codes and the local AHJ to
determine the requirements for handicap access door
applications.
Hardware configuration
A CRC used for a handicap access door may require the
following additional hardware:
• Automatic door opener
• Additional card readers
The automatic door opener is installed directly to the access
door. The CRC controls the opening of the door with its internal
relay.
Caution: The CRC relay is for low-voltage only. Do not exceed
the relay limits stated on the installation sheet.
The additional card readers are wired to the standard card readers
in parallel.
SDU programming
In the SDU, you’ll need to define the CRC relay device type as
Access Door Control. This will activate the door opener for the
time specified by the ACDB.
ACDB operation
The relay open time needs to be defined in the ACDB. This is
the number of seconds (0 through 255) that the CRC will
activate the relay that automatically opens the door. The default
is 30 seconds.
The handicap unlock time also needs to be defined in the ACDB.
This is the number of seconds (0 through 255) that the lock will
stay unlocked. The default is 20 seconds The door will relock
when the unlock time has expired and the door has closed.
Both of these times can be set to allow a longer access time for a
handicapped person.
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