Access control applications
3.38 EST3 Installation and Service Manual
The figure shows the charging power coming from the 3-PPS/M
in the control panel. The access control system requires a 24 Vdc
power supply to power the CRC and to charge its battery. The
3-SAC connects to the CRC through the SAC bus.
When an authorized card is read at a card reader, the CRC
provides power from its internal battery to the door strike and
unlocks the door.
Power supply
Jumper settings determine the power source and usage for the
CRC. Refer to the installation sheet for correct jumper settings.
Configure the input power as DC. Configure the output power as
intermittent.
Hardware configuration
The control panel must contain the following rail modules:
• 3-SAC Security Access Control module
• 3-PPS/M Primary Power Supply module
The 3-SAC module supports the SAC bus. Power for the CRC is
taken from the 3-PPS/M and is routed with the data lines in a
cable composed of two twisted-pair wires.
SDU programming
When configuring the system for this application, you’ll need to
configure the CRC and define the appropriate lock type in the
SDU. For this application set the Lock Type to Strike.
ACDB operation
Note that a CRC configured and programmed for intermittent
lock use cannot support an open schedule (a period when the
lock is kept open). Such a schedule would quickly drain the CRC
battery and the lock would close.
You should document the CRC configuration and include this in
your project plans. Make a copy of this documentation available
to the site security staff who will use the ADCB to create and
assign schedules.
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